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Old 10-16-2008, 03:27 AM   #26
Kosmic
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What's the crank thrust clearance anyway?
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Old 10-16-2008, 09:19 AM   #27
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'92 FSM for the EJ22T says 0.0012 to 0.0045 with a wear limit of 0.0098.
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Old 10-16-2008, 12:52 PM   #28
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Quote:
Originally Posted by All_talk View Post
'92 FSM for the EJ22T says 0.0012 to 0.0045 with a wear limit of 0.0098.
Thank you sir.
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Old 10-16-2008, 04:33 PM   #29
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The thrust clearance in on my ej22 stroker is 0.005 with a usdm STi crank FYI.
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Old 10-16-2008, 04:42 PM   #30
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Default So who makes the thinest head gasket?

So if we use the shorter STI rods and the wiesco pistons, and which is the thinest head gasket?
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Old 10-16-2008, 07:21 PM   #31
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If you choose to use the shorter 130.5mm rods (STi or other) with the Wiseco EJ22T stroker piston be advised that is may cause the upper oil ring to drop just below the wrist pin hole. This in itself is not an issue, but the upper oil ring is not tabbed to prevent rotation and the gap could migrate into the hole and cause issues. If you are going to run this combination I would get a tabbed top ring and make the small modification required to the piston to use it.

As to the head gasket, the STi is the thinnest MLS, but its bore is larger than the EJ22 cylinder and it will create a thin pocket around the quench area that is not ideal. The thinnest OEM gasket with the proper bore in the phase II EJ22E but that gasket is not a MLS and may not hold boost as well. I am not aware of an aftermarket HG that is thin with the 98mm bore.

You'll have to decide if these small detail will be an issue for you, I tend to pick at the smallest of things.



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Last edited by All_talk; 10-16-2008 at 07:29 PM.
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Old 10-16-2008, 07:53 PM   #32
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Quote:
Originally Posted by All_talk View Post
As to the head gasket, the STi is the thinnest MLS, but its bore is larger than the EJ22 cylinder and it will create a thin pocket around the quench area that is not ideal.


Gary

On one of my 2.2 motors, I used a 2.5 head gasket cause thats what i had around. It worked and I did not SEEM TO suffer any issues due to the space. I toasted a piston though on that build (when don't I? ) , but who knows why....
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Old 10-16-2008, 08:46 PM   #33
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Hey Caboob-

I am building this engine right now and I live Seattle. PM me if you wanna come take a look and chat about my experience with this build. I can help you CC your heads too if you would like. I would like to CC my stuff as well and nail down an exact compression ratio. With the numbers from the factory I calculate it to be around 8.1:1 which is right where I want it. There are a few things I would have done differently if I could do this all over again but due to time and money I am gonna run with what I have. Live and learn!

I am still kinda worried about my thrust bearing. I know it will work the question is for how long? Anybody had their EJ22T block machined for thrust in position #5? How much does it cost?
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Old 10-16-2008, 09:53 PM   #34
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Quote:
Originally Posted by gold rush View Post
The thrust clearance in on my ej22 stroker is 0.005 with a usdm STi crank FYI.
Thanks for the info Lyndon.
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Old 10-24-2008, 11:48 PM   #35
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so I've kind of changed a few things idea wise to suit my needs a bit more on the shortblock.

So the EJ22T will get punched out .020 like I said in the beginning but I'll also have the block and phase II crank machined to the #3 and #5 thrust bearings. Then use a stock EJ257 crank and rods, and ACL bearings. The reason why I'm going to have the block and the crank machined for the dual thrust bearings is because I do drive this car everyday and I'd like it to last through some beating without going "OMG WTF!?!?!"

After my whole EA82 turbo build and how THAT went a few years ago, I'm doing this right, from the get go. I'm not cutting any corners and half assing it so I can fix it later. Been there, done that, got the t-shirt for it.
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Old 10-25-2008, 10:44 AM   #36
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Here is what I used in my setup:

EJ22t block bored .020" over
Phase I EJ25 Crank (Polished and Balanced)
Phase I EJ25 Pauter Rods (http://www.pauter.com/subaru.htm
Wiseco K602M975 Pistons

In my mind unless you have some sort of custom engineered rods like what HomemadeWRX is going to be using you should just flat out spend the money for Pauter Rods. I have heard of these rods surviving 3 out of 4 cracked pistons due to det and only needing the bearings replaced. These rods are the strongest Subaru Rods commonly available right now. They do not bend.

With my setup I had a few thousandths pistons protrusion. I had to be really careful with the head gaskets so I did my research and found out exactly what Wiseco specifies to run. I don't have the model in front of me but it really is critical to call Wiseco and Cometic to see what they specify to use with this setup. Even so after you get the timing belt on and turn the motor over with a wrench peer down into the intake port of one of the cylinders and make sure you don't get any interference.

As far as the heads go I used a TWE shim under bucket kit that I bought second hand. Since some of the shim pucks didn't keep lash within spec I had to jump through hoops to find blanks that my machine shop could mill to spec. If I had it to do all over again I would have ordered shimless buckets!!

As far as valve springs I ordered Supertech SPR-TS1015/SUB2-KIT. They are dual spring and should be capable.

I have a set of the TWE Stage III EJ25 Phase I DOHC race cams. They don't have really aggressive duration but have tons of lift. Should be pretty good for the usable RPM range.

Good luck.

Brad
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Old 10-25-2008, 11:11 AM   #37
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Quote:
Originally Posted by Caboobaroo View Post
After my whole EA82 turbo build and how THAT went a few years ago, I'm doing this right, from the get go. I'm not cutting any corners and half assing it so I can fix it later. Been there, done that, got the t-shirt for it.
yeah, but I've got the diploma.

which reminds me... got some new tools. Dremel 400 XPR and workstation/drill press.

I almost paid the extra bucks for the planer attachment.

edit: are you still coming down here at the beginning of nov?

Last edited by JonofScio; 10-25-2008 at 01:42 PM.
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Old 10-27-2008, 03:03 AM   #38
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Why not just bore that thing out to 99.5 and make it a 2.5?
The ej22 block has very thick cast in sleeves that make it possible. Use a phase1 crank with good rods, and j&e pistons, arp studs and call it a day. btdt
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Old 02-05-2009, 12:45 PM   #39
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Ok i build 3 years a go my 2.35 engine.

But i lost al data on the engine

ej22T STI 2.5 crank wiseco oem stroker pistons 98MM

But can someone tel me what rods this are

The are pauter ,but whe dont know if the are the 130.5 mm ore the 131.5 mm

You can see on the picture it says subaru wrx



Thanks
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Old 02-05-2009, 03:22 PM   #40
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you can measure them. I know on my custom orders, the length is on the other side (in inches of course) of the rod caps

what part number wiseco piston did you use? through that compression height, you can figure rod length too.
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Old 02-05-2009, 04:41 PM   #41
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I have used the k602m98.

But here is the wole story

My car seems a bit low on power

2.35 Engine with sti 5 heads gt30r turbo on pump fuel 1.8 bar it did 388 Whp

If whe put more boost on it (2bar )and meth injection the power goes to 422 Whp

But a good friend of my has a 2.5 engine gt30 r and meth in the tank and he has 440 Whp

But whe think the compresio ratio is to low on
my engine


I have used a new ej22T shortblok sti 2.5 crank 130.5 MM Pauter rods and the oem stroker pistons from wiseco.

The headgasket is is 55 thou thick

I dont seem to remember how much the pistons are below deck ?

But if the are more than 0.6 Mm below deck the compresio is below 8:1

The problem is i can not measure them because the engine is running

But i had a old picture of the rods
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Old 02-06-2009, 04:34 AM   #42
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Oooooo shiney...

I'm still going to do this but it'll be awhile thanks to our awesome economy! I'm going to just take the engine to a Subaru engine shop and have them build the shortblock for me and then I'm going to take my heads to Delta cam and have them go through them and add in some nice cams

Why? Because I'm lazy and don't have much time

Oh and I also found out that my heads are from a Legacy 20G if that makes a difference. I heard they have a different cc then the semi closed G motors?
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Old 02-06-2009, 09:42 AM   #43
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if you plan on having someone build/machine your motor for you, its best to get their recommendations ahead of time...
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Old 02-06-2009, 11:06 AM   #44
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I contacted wiseco before I did my build and their specs for the off the shelf strokers are based on phase1 DOHC heads & phase2 2.5 head gasket to yeild the 8.5:1 c/r

with the stories I've heard about crankwalk from machining out the thrust bearings I dont even see why bother, this is a constant problem you seem to have to adress relatively frequently so I say either A) go with the rediculously expencive yet super strong pauters or B) just use the phase1 setup like I have and find out for yourself what their limit is

the crankwalk however wouldnt be that much of a concen unless you plan to daily drive it as I do, a weekender track car or something I'd say wouldnt be too much concern

I've had a few thosand miles put on my car some pretty hard ones at that @ 14.5lbs from a 8cm big16g no problems with rods or crankwalk I jus hope I can say the same once I beef (ppg) up the tranny enough to put in a 35r
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Old 08-22-2011, 11:56 AM   #45
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Hello all bringing back an old thread as I'm helping a buddy put together a motor.
I just wanted to confirm that the crankwalk only happens after machining the block for the rear thrust?

We are using the 22t block, phase one 2.5 crank and rods, and the above mentioned wiseco K602M975 pistons with 02 WRX heads. Hoping the phase II head gasket will do the job.

Also, wanted to confirm yea or nay that the phase one 2.5 crank bearings will fit as well in the 22t block?

Thanks for any input....
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Old 08-22-2011, 12:15 PM   #46
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Quote:
Originally Posted by TyranosaurusWRX View Post
Hello all bringing back an old thread as I'm helping a buddy put together a motor.
I just wanted to confirm that the crankwalk only happens after machining the block for the rear thrust?

We are using the 22t block, phase one 2.5 crank and rods, and the above mentioned wiseco K602M975 pistons with 02 WRX heads. Hoping the phase II head gasket will do the job.

Also, wanted to confirm yea or nay that the phase one 2.5 crank bearings will fit as well in the 22t block?

Thanks for any input....
Crank walk happens if you're running a really heavy duty pressure plate. The phase1 thrust bearing surface is LESS than a phase2. So to speak a phase2 thrust bearing will be less prone to crank walk. Running a twinplate will also help reduce crank walk.

Those Wiseco piston will come out the block. I know I ran STOCK EJ22T pistons with the EJ22E HG and they cam really close to hitting the heads, however I pulled it off. Now I run custom CP pistons with a WRX compression height.

The EJ22T is a phase1 block. Buy phase1 bearings and it'll fit. Rod bearings you just buy for EJ25D or say 48mm journals.
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Old 08-22-2011, 12:33 PM   #47
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Yeah I was really surprised that you don't see it mentioned much that there is actually two different ways to do the stroker depending on phase. In the past I built a stroker but it was all phase II so everything came together pretty easy, and with the custom pistons they came flush to the deck. We have the phase I crank so we are taking that route.
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Old 02-10-2012, 01:38 AM   #48
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Quote:
Originally Posted by FuJi K View Post
Crank walk happens if you're running a really heavy duty pressure plate. The phase1 thrust bearing surface is LESS than a phase2. So to speak a phase2 thrust bearing will be less prone to crank walk. Running a twinplate will also help reduce crank walk.

Those Wiseco piston will come out the block. I know I ran STOCK EJ22T pistons with the EJ22E HG and they cam really close to hitting the heads, however I pulled it off. Now I run custom CP pistons with a WRX compression height.

The EJ22T is a phase1 block. Buy phase1 bearings and it'll fit. Rod bearings you just buy for EJ25D or say 48mm journals.

The Wiseco's definitely come out of the block. I don't think as far as the ej22t pistons did, looks like about half that (approx .5mm). Was the 22E head gasket you used the oem composite or the newer mls? Any idea of the thickness it was (I'm seeing .030" on a quick search)? Using the .040 Cometic should give us a small margin I'd think...

Last edited by TyranosaurusWRX; 02-10-2012 at 01:50 AM.
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Old 02-10-2012, 01:48 AM   #49
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Quote:
Originally Posted by TyranosaurusWRX

The Wiseco's definitely come out of the block. I don't think as far as the ej22t pistons did, looks like about half that (approx .5mm). Was the 22E head gasket you used the oem composite or the newer mls? Any idea of the thickness it was? Using the .040 Cometic should give us a small margin I'd think...
they are the 3layer MLS with same thickness as the wrx/ STi
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Old 12-21-2020, 03:44 AM   #50
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Quote:
Originally Posted by All_talk View Post
Pics of the heads would be a start but measuring the chambers would be best. It not hard to do, you'll need a plastic plate a syringe graduated in ccís and a thin oil like ATF. You can also by ready made cc kits.

If you are going to be near Ellensburg you could stop by my place with a head and we could sort it out.

Gary
Hey Iíve been looking through the forums and it seems like you are very knowledgeable about the build I am thinking of doing and youíre local which is even more dope! Iím thinking of doing a 22t but bored and sleeved to a 2.5 and run 255 heads as I already have a set. But my whole dilemma is what internals to run. I was just thinking about keeping the 22t crank to make it more simple but any feedback would greatly help. Also if you know any good machine shops around the area that would be comfortable in this. Thank you!
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