Well, after over a year in the making, the next level in Subaru stroker motors is now available. Tested to over 800hp these motors will give you the reliability you have been looking for.

We start off with a phase II 2.5 case and have special ductile iron sleeves intalled. The sleeves are flanged at the top to provide lateral strength(no need to fully close the deck) as well as a bigger sealing surface for the head gasket. Then we optimise the oiling system before finally having the cases aligned and decked. Also available is a custom 13mm headstud set. The thread pitch is altered to give maximum strength and stud size is up from 11mm. Heads will have to be modified for the bigger studs.(The pick below is of a 2.2 case that we had sleeved)

Then we add the internals. We use custom made-to-our-spec pistons and rods and a modified stock crankshaft. The pistons and rods are designed to work with the current DOHC WRX heads. They are turned into matched-sets and balanced. The crankshaft is spun balanced to 10,000rpms and then polished. All motors come with coated bearings and a full subaru gasket set.

Each short motor can come fully assembled or in kit form. Please be aware that if bought in kit form, modifications to the case must be completed by a machinist who is familiar with the subaru engine design.

Kit price is $3500
It includes all the internals, the sleeves, the headstuds, and a factory gasket set. It's everything you will need parts wise to build your own stroker engine. You will be responsible for finding a machinist to install the sleeves.

Complete short motor is $5750
This is a fully built short block assembly and comes complete ready to bolt your heads onto. You can either send me your heads for the small modification needed for the bigger studs(included in shortblock price), or have someone do it near you.

Also available is an upgraded valvetrain. It includes new lifters, shim, dual springs, TI retainers and a shim set. THIS IS THE CURE FOR OVER-REV PROBLEMS. There are two different kits available.
8500 RPM KIT is $1250 and uses single springs instead of dual springs. There is no modification to the head to run this set.
9500+Kit is $1450 This kit requires a small modification to the head for the dual springs.
If the heads are sent to me, I can also provide a very good valve job and any porting service. I would send them to the same head machinist who did our race heads and is one of the top head guys in the country. Price on this varies due to certain needs.

Below are some pics of an engine I just did for a person we all know in the forums. I used a 2.2 solid deck case for his engine. I can provide this also, but there is a cost increase due to having to buy the cases from the dealer. These 2.2 cases,although stronger than the wrx case, are not any stronger for our application. The sleeves we use make the stock 2.5 case much stronger.

Any questions, please give ma a call or email me. I would be more than happy to spend some time with you and answer any of your questions about my motors.

Ron Williams
Axis Power Racing
314-865-4409
r.williams@axispowerracing.net





http://allaboutspeed.net/Ron/DSCN1902.jpg http://allaboutspeed.net/Ron/DSCN1911.jpg http://allaboutspeed.net/Ron/DSCN1922.jpg http://allaboutspeed.net/Ron/Picture20006.jpg http://http://allaboutspeed.net/Ron/Picture20007.jpg http://allaboutspeed.net/Ron/Picture20013.jpg

Whoa!! bump for the stokers!

The real question is what is the final displacement? Stoke, Bore?

Either way it looks like an interesting setup for high-hp apps.
-Brad

When I pm'd you I thought the 5750 was just for the kit..3500 for that kit is a steal!!! I may be getting a second job now:D The guys that will be doing the install and all the tuning will hopefully be giving you a call for one of these this summer. Great setup and a great price!

About how much will the "small modification" for the bigger studs cost?

I was specifically thinking the valvetrain components as it is also DOHC, but what about the sleeved block? Want to experiment with the extra engine I have?

Todd

DAYYYYYYYYYYYYYYAM

chicks- final displacement is 2.4ltr. shorter rods and smaller bore than stock help with high rpms and overall balance.

hobzz-modification to heads is included in the short motor price. if you want just the studs,$225 for the studs and $120 to work the heads.

wawazat- i am not sure if the valvetrain will work with the svx motor. it will work with the new h6 engine. we are already building 2 of these for twin turbo and probably around 1200hp. and yes we are also sleeving that case since it is pretty much a wrx case with 2 more cylinders.

If I shipped you the block and heads, would you be willing to check them out for a possible fit for your components?

Thanks,
Todd

Sure.

Axis Power Racing
3125 Park ave
St Louis, Mo 63104
314-865-4409

Originally posted by Axis Power Racing
chicks- final displacement is 2.4ltr. shorter rods and smaller bore than stock help with high rpms and overall balance.

I thought it was 2.5?

No, I start with 2.5 cases and after sleeving them, reduce the bore a little. This is so the cylinder bore walls can be as strong as possible. There is sufficient room to bore to 2.5spec if needed, but I don't do it right off.

Ron

Would be nice to see numbers on a engine dyno. Not just a guesstimate of what you think it is pushing..thanks Gerry

Axis this is a very nice offering!! Bravo! So just for grins in your estimation If I bought a kit how much ~ do you think It will cost for a machinest to fully assemble the kit? Also is this too complicated for the average machinest? Also Is the valve kit needed or just nice to have in the event of an overrev will these engines be destroyed without them?

Originally posted by Gerry
Would be nice to see numbers on a engine dyno. Not just a guesstimate of what you think it is pushing..thanks Gerry

Huh These parts look to be squarely aimed at reliability. We all know what stroked EJ produce hella HP Hes just offering the added reliability. The tuning and turbo are up to you. You can run 227 hp and Im even betting more than 800 HP though not all the time

I have put an engine on the dyno and it did make over 800hp. This was on an engine dyno mind you. I know it would be a great thing to post a dyno chart and all, but we aren't finished with the engine yet and I don't want to put it up untill it's making all it can. Besides, I don't believe in guesstimates. When I say it will handle 800, it will handle 800.

My machinist does my cases 10 at a time. I get a decent price because it's almost like an assembly line. He sleeves the cases, aligns and deckes the case halves, and balances the cranks. I do all the rest inlcuding final assembly. I would think it would cost at least $1000 for the case machining through someone else and then figure about $1000 or so to assemble the engine. The assembly takes time as there are many clearances to check. I have never had to alter anything I have had machined prior to assembly, but if you use a different machinist, who knows.
Upgraded valvetrain is just for added rpm reliability. Your stroker motor will run just fine with the stock valvetrain. We saw over 125hp difference after turning our motor from 7200 to 8700.

Ron

I have a 02 motor from a car with 7k miles that I cant sell Nobody wants! if I send to you for the machining how much is it? I can assemble myself! so I am looking at $3500 + ??
Thanks Kevin:) :)

Machining the case would cost you $1000. That would include insured return shipping.

Ron

Ron,
So how much is it for a complete modify by you 2.4L long block? I am asking this for a friend of mine, who is also one of the vendors here. :)

Complete long block would be somewhere between $10-12000. That would include new heads fully ported, Jun cams or adjustable cam sprockets, upgraded valvetrain, all new valves, and of course the shortmotor.

If the correct mix of components were used on one of these engines, 750hp would not be a problem.

Ron

Ron,
I see, when you say the right components, I am assuming all the biggest parts you can find, such as intercooler, injectors, pump, turbo, etc.. In your case, could you shine us a little light on what kind of right components to go with? T67 turbo from JUN/Greddy turbo kit? 1000cc injectors? I am just a bit confused how a 2.4L H4 motor can produce 750hp-800hp, even if it's at the crank. :confused: You have any pics of your project car which made 800hp? Dyno sheets?

We used a T70 turbo from Innovative along with four 550cc injectors and four 72lb msd injectors which never ran over 60% duty cycle. Our throttle body is an 85mm mustang variant and we used a basic walbro pump to move the gas from the tank to a swirl pot. Then there is a Bosch 15mm pump pushing fuel to the motor. Other than that, we didn't use anything much different than what most other people are using to make big power from subaru engines. There are of course the necessary upgrades(fuel rails, exhaust, stand alone ecu) to make THAT kind of power, but my engines are happy running at lower hp levels too. I just wanted to see what can be tolerated by one.

To put things into perspective, I recently was shown a head that is used in a turbo import application that made 1100hp from 2.2ltrs. It makes 750 reliably, but when cranked up to produce over 1000 the head splits. Anyway, the heads I used on the stroker motor I ran were measured to have 10-15%more flow in all areas over the other maker's head. This was all measured after porting and final spec. Making power from small displacement 4 cylinders is not a big problem, it's making it live that is the main hurdle.

Pictures of the finalised car and engine will be shown, but not before I debut it and run the car to it's full potential. If you look back into the older threads of the proven power bragging rights forums, you will find pictures of some of the components we used. Look for threads started by boogerwrx. The owner of the car is not keen on anyone seeing the progress and wants the car to remain somewhat elusive. This may seem strange, but I fully agree with the owner. Why give away all our little secrets when it's our money we are spending on development and prototyping of parts. He wants the fastest wrx and he shall have it.

As for my engines, I am not forcing anyone to buy anything and I am not overly pushy about selling one. All I want to do is offer a motor I KNOW is strong and is superior to anything else out there. We did spend the money in developing the right combo of parts and we have to recoup that somehow and selling properly built engines is our way. There are only a handful of true subaru high hp engine builders out there and I will put one of my engines up against any of there's any time. There is a reason why the manufacturers we used to develop our parts are going to be releasing a version very similar to what we had made. The stuff works and is the best it can be.

Ron

Originally posted by Axis Power Racing
Well, after over a year in the making, the next level in Subaru stroker motors is now available. Tested to over 800hp these motors will give you the reliability you have been looking for.



Dude, where are you getting these numbers from?

You keep throwing this 700-800hp # around like its simple.

I dont even know of more than 1 maybe 2 subarus eEVER to break into these nubers and those cars are more secret than Area 51.

How bought some background into this.

Give us some info, some proof.

Your site doesn't even talk about subaru's.

Lots of people look at this as a good alternative but especially when we are talking 5 grand+ for a engine that wont have a warranty we get very questionable as to who we buy from.

Any info would be great.


<---needs a stroker within 60 days.

Sorry about the webpage. I just moved back to St Louis from Los Angeles and my partner here is a big Miata and BMW guy. The guy doing the webpage is entirely too busy right now and we are doing the best we can. There will be some pics on the page of the drag car and of the 4 and 6 cyl engines.

As for 700-800hp being simple to make. I never said that. I said the engine would survive that level of power. Hugh steps have to be taken to make that kind of power, but 500hp is starting to be the norm and it won't take long until even bigger numbers are almost everyday. It occured to me that nobody that does stroker subaru motors had really talked about what kind of power their engines made or what they could withstand. So what we did was inspect one kit from basically every subaru stroker engine supplier and found areas to improve on them. Did we copy them, no. We took their initial design and modified it to produce what we have now which is a strong reliable engine base.

Proof is forthcoming. I have scheduled a second dyno session in early Feb and I fully expect to make more power than that what I did the last time. We didn't spend over $100,000 last year to to be inferior. Alex should have his motor up and going by late Jan and Shiv is doing the tuning so it should be a stunner. I am also sending an engine to Shiv for the SCC project 2.5rs. That's where the real test will lay. Those magazine guys are always so much harder on cars than the owners.

Ron

Ron,
Thanks for the tuning-light of your project. Help me to understand something here, you are using 8 injectors for the 4 cyl engine? Wouldn't that flood the engine? You say you are using the Walbro 255 l/h + a Bosch 15mm pump, which calculates to how many l/h? What about timing? Sorry for all the questions, I am building up my WRX also, don't want to be the fastest, because you can never be the fastest, but I just want to learn a little bit more. Thank you for your time. Also, the user boogerwrx, could you please kindly point me to his post? I can't find it. Thanks!!

look here http://forums.nasioc.com/forums/showthread.php?s=&threadid=261006

and here http://forums.nasioc.com/forums/showthread.php?s=&threadid=257776

these are some parts we had made earlier in the process.

The fuel pumps are a walbro 255lpr pump and a 15mm bosch inline pump. It's hard to put a capacity measure on the bosch pump because we are using different fuel pressures, but it is also known as the "800hp" pump. The swirl pot makes the biggest difference. Since it stays full all of the time, it can't starve for fuel and let the engine run lean.

I do use 8 injectors for the 4cyl and will use 12 for the 6cyl. Two injectors per cylinder provide a more accurate fuel flow than one big injector. And they run at a lesser duty cycle so have less of a potential to fail. Besides, making a car idle decently with a big throttle body and hugh injectors is not possible.

Timing is just set by dyno tuning. We started with stock and worked our way to where we are now. We knew stock was conservative in some places and crazy in others, so we made adjustments to there and just starting running the engine and data logging. The rest just falls into place.

Ron

bump

Bill

SICK.

Kevin

Jeez, with the power your making now, why not just go bananas and convert to Methanol or Alcohol. Get that puppy over 1000HP!

-verno

Sounds like a great project. I also own an SVX. I installed a turbo and I'm in the process of installing a Tec II engine management system w/550 cc/min injectors. I would be very interested in having the engine built eventually. Need to lower the compression from 10.1:1 to 8.5:1. I would like to do forged aluminum pistons and titanium rods and pins. Also retainers and beefed up valves. I would be very interested in a quote to take on this project. Please contact me.

First I find out about the US STi, then I see pix of the Jun Hyper Lemon GDB, and THEN I stumble onto this thread.

Long live the big EJ engines! Subaru will rule the world!

it already does....;)

-scu

If this turns out to be the real deal, and I see some serious results, you might possibly have a customer around August, as this looks perfect for my project 'Grocery Getter'. ;)

If this is the real deal, I think i may have just found my auto-x motor :) I'll be in touch.

97legacy- I can bump the compression a bit for you if you are looking for something that is all bottom end. I can set them up from 8.3-8.5:1.

cdidgerlando-i will email you.

ron

Bump for a SWEEEEEEET setup.

I seem to be getting quite a bit of questions about longblock motors. Yes, I can do longblocks also. They are priced @ $12,500. That is with brand new cylinder heads that are fully ported, with Jun cams, and the 9500rpm head kit. It also includes port matching of your intake when you send it in. At this time I can't provide the intake manifolds as there just isn't enough out there yet to be able to get them cheap.

Ron

Axis- Will you guy be offering a disasembled version of your shortblock?

scu

Originally posted by Scubaru
Axis- Will you guy be offering a disasembled version of your shortblock?

scu if you read the first thing, that is a disassembled version that is $3500

DOH!! My bad.:o

-scu

Very nice work!:D That is a proper high HP 2.5 set up...;) If the EG33 doesn't swap smoothly, this is an excellent 2nd option. Truely appreciate the R&D & machining that achieved the finished product.

How many HP can it crank out N/A?;)

Originally posted by Axis Power Racing
Well, after over a year in the making, the next level in Subaru stroker motors is now available. Tested to over 800hp these motors will give you the reliability you have been looking for.

Then we add the internals. We use custom made-to-our-spec pistons and rods and a modified stock crankshaft. The pistons and rods are designed to work with the current DOHC WRX heads.
Kit price is $3500
It includes all the internals, the sleeves, the headstuds, and a factory gasket set. It's everything you will need parts wise to build your own stroker engine. You will be responsible for finding a machinist to install the sleeves.

Complete short motor is $5750
This is a fully built short block assembly and comes complete ready to bolt your heads onto. You can either send me your heads for the small modification needed for the bigger studs(included in shortblock price), or have someone do it near you.




Since this is a "reliable, custom-spec stroker" of your design, do you have any idea what the long-term effect of the shorter rod will have on the cylinder walls? Were you able to spec the piston skirts / pin height to account for the additional stress? Thanks.

Double post *sigh*

I am REALLY interested in your 2.5l built short block, it sounds like a really good build up, but I have a couple of questions:

I have fuel rails and STi injectors and a fuel pump - do I need any other parts to make your engine work in my WRX?
(sorry, I've never replaced the engine before :) )

Can I get an estimate of shipping to CA (94531)?

What is the compression ratio of this engine?

Forged pistons (I think you said "custom" and I don't know what that means)? Rods? Do I need to be concerned about new rings?

Thanks!

Sordid- along with what you already have, you will need some kind of management like a utec or a stand alone ecu to run the engine. It will run on the stock ecu, but not very well.
Shipping is included in the price.
Compression ratio is usually 8.3:1. I can do a little higher but not more than 8.5:1
Engine comes with forged pistons, forged chromoly rods, and total seal rings.

n2x-i have never heard of an instance where a shorter rod caused more trouble in an engine except where the stroke was increased dramatically. I use a shorter rod so the longer stroke crank of the 2.5 can be used. If I used the stock length 2.5 rod, the pin height in the piston would be up into the second ring land where it would cause sealing problems.

Ron

your wonders never cease. keep it up ron

peace,
dan

IIRC the CR of the Cobb built 2.5 hybrid was 8.5:1. The new USDM STi is 8.2:1. 8.3:1 seems right in the ballpark.

looks awesome ron....

-mike

If I switched from my ej20 to the 2.5 block, carry the wrx head over, will my other parts transfer over? (hks header, dp, upipipe, exhaust)

The external design of the case is identical to the wrx, so yes everything will bolt right up. The only modification you will have to do is to enlarge the holes for the headstuds a little. It's a minor process.

Ron

so i guess leaving california has been good for you. good luck with all your crazy cars man and i may be calling you up in the next few months for a motorswap; i decided to end with the deal with the other place doing the work. Leo's working for easy street again, but i even their stage 4 wouldn't come close to what you do... and they charge $25k:lol: :lol:

peace,
dan

Keepin it current!

Reality check...Easy Street dosn't build their own engines...Don't believe the hype....

There markup is disgusting (easy Streets) - Happily Awaiting My Axis Stroker fulll shortblock assembly to be arriving in 2.5 weeks :)

Great Customer Service so far!


Rob

Is the 9500 RPM valvetrain kit price per head or for both?

do you do NA builds as well, not just for turbo applications?

what kind of power do you see out of them?

bump

Originally posted by trojan9x
do you do NA builds as well, not just for turbo applications?

what kind of power do you see out of them?

Yeah, what he said. Also, can you work w/DOHC??

Originally posted by RobPA
There markup is disgusting (easy Streets) - Happily Awaiting My Axis Stroker fulll shortblock assembly to be arriving in 2.5 weeks :)
Rob

I'm looking forward to installing it for you, Rob! Short be a fun project. :devil:

-Jim

Originally posted by RobPA
There markup is disgusting (easy Streets) - Happily Awaiting My Axis Stroker fulll shortblock assembly to be arriving in 2.5 weeks :)

Great Customer Service so far!


Rob

i saw ur motor.... its awesome.... those things can handle anything... :D

-mike

gonna have to keep my eye on this one

how much if i can core you a 30,000mile 2.5 long block with: intake,powersteering pump, fuel rails,injectors


I dont need this motor back..but will send it to you as part of the payment....


I am interested in a built shortblock that i will use my WRX heads on.


please email me @ clayton@freebmw.net

Sorry if I don't get to everyone in a timely manner. I have been extremely busy. I will do the best I can to answer everyone this weekend.

Thanks for being so patient.
Ron

My motor will be here on monday, i am so excited!!!!

All this seems really interesting, but there are just so many points I am ignoarnt on. I would like to learn all that I can about engines and what are the terms you guys throw around. Could someone please email me some links to learn what you guys are talking about? I'd like to be as knowledgable as possible so that maybe, someday, I can get one of these too.

email is at capt_crunch at mac.com (replace at with @, damn spam)

thanks!

Ben

I apologize for being an idiot, but here are my questions:

1. How much for a complete 2.4L motor with 8.3 or 8.5 compression? Do you do this (shipping to CA)?

2. How much work to get the motor into my car? Can any mechanic do it, or does it take someone special?

3. Do you do install motors in your shop (I can see me taking a vacation to MO, I hate MO though :) )

4. What kind of engine management do you recommend?

5. What is the meaning of life?

Thanks!

The price for a complete motor varies. For the full-on power package, it's $12,500. But for that you get ported and flowed brand new heads, Jun cams, upgraded valvetrain(9500rpm), basically a complete ready to bolt up longblock. If you send me your heads, I can have them cleaned up(surface trued) and install them with whatever else you send and try to make it as little trouble as possible. It is possible for me to send you an engine that all you have to do is bolt it up and hook up the electrics, but I would need everything from you.

Shipping is always included in my motor prices.

I do install engines, but the wait is staggering right now. I have several other things lined up that I have to get to first.

Engine management is all up to you. A unichip will not work. I am trying to get a local person to let me install a motor and see if the utec will run it decently enough. If that happens, I will be posting a utec base map that should get one of my engines up and running without too much hassle. Otherwise, you will need some kind of stand alone system. The tec3 is good, as is the SDS (simple digital systems), or Haltech or something along those lines. I am not certain about a ecutek reflash, as the fueling must be adjusted across the entire fuel map, not just under full load.

Ron

Originally posted by Axis Power Racing
The price for a complete motor varies. For the full-on power package, it's $12,500.

What I am looking for is the 2.4 with sleeves running 8.3 or so compression. I know I can ship you my block, my question is can I just buy the whole thing from you?

Originally posted by Axis Power Racing

Engine management is all up to you. A unichip will not work. I am trying to get a local person to let me install a motor and see if the utec will run it decently enough.
Ron [/B]

How about a LINK? it would be good if you had a base map too.

Thanks

Yes, you can just buy the whole thing from me. I don't require any cores, so I never ask for your motor anyway.

Until I see that Link has sorted out all the little bugs, I am not interested in trying to get a base map for it. They have an awesome product, works great in the miata. But until the subaru version is a little bit better, I just don't want to touch it.

Ron

Ron the Utec will work with the 2,4 shortblock right??? bolted to stock heads? with 800 cc in jectors



Rob

The utec will work, but you will have to mess with it more. The fuel is going to be the hard part. You will have to make adjustments pretty much everywhere to get the most from it.

TTT

damn. how much is it for the whole motor, but im fine with the 8700 redline(or whatever it is) i would send you my whole engine if you need it? thanks

I now have UTEC maps for this motor, please email me at darkbaron3@aol.com if anyone is interested. I will have to charge a few bucks for the race map though :devil:

What cams are you going with and how much are JUN cams?

robpa doesnot have the car anymore. i dobut yeah i want to do the 9500 rpm kit.

jared

any reason why he doesn't have the car anymore, can U go more into it?? Was something wrong w/ the engine?

some pics of a recent motor:

http://axispowerracing.net/MJUpimpride/strokermotor.jpg

http://axispowerracing.net/MJUpimpride/strokermotor1.jpg

http://axispowerracing.net/MJUpimpride/strokermotor2.jpg

Very Impressive, ive seen a few posts on Your stuff Ron, very impressive indeed!
For future reference, What Trans mods do you endorse or reccomend for 800 hp letalone 500?
Signed: Curoius. :D

YGM Ron.