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Old 03-24-2011, 08:16 PM   #1851
Phatron
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stock sleeves so im gonna keep it around 30 psi
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Old 03-24-2011, 08:49 PM   #1852
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Quote:
Originally Posted by Phatron View Post
i still keep hopping between the GTX30 and GTX35 for my drag car build....EFR's are just off the table because of the wait.

I really dont wanna rev the car out to 8k....so i think the GTX35 is going to be "too laggy" at a 7500rpm redline to make sufficient use of its powerband.....so the gtx30 looks like a better choice.

also....i like v-band turbine housings vice t3 for ease of install and removal.....and the EFR doesnt have a v-band option...despite what aboothman might think, there are more things that people look at when picking a turbo besides whats hilighted in the EFR brochure....and wait time and ease of installation are 2 of my main decision factors.
A car wit a GT30 or GTX30 sized turbo isn't a drag car its just a fast car you take to the drags. If you're building a drag car do it right and go big GTX42 or bust beeyatch

Are you doing the tial V-band housing?
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Old 03-25-2011, 10:14 AM   #1853
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^^^I'm with you. Go big or call it a street car that goes to the strip

Quote:
Originally Posted by Phatron View Post
i still keep hopping between the GTX30 and GTX35 for my drag car build....EFR's are just off the table because of the wait.

I really dont wanna rev the car out to 8k....so i think the GTX35 is going to be "too laggy" at a 7500rpm redline to make sufficient use of its powerband.....so the gtx30 looks like a better choice.

also....i like v-band turbine housings vice t3 for ease of install and removal.....and the EFR doesnt have a v-band option...despite what aboothman might think, there are more things that people look at when picking a turbo besides whats hilighted in the EFR brochure....and wait time and ease of installation are 2 of my main decision factors.
Are you just bracket racing or something? 30 or 35R and 'drag car' don't exactly go together in my head. If you're keeping 7k as the redline, then I can see a 35R if you're running 07 sti gears or a drag 5-spd box.

Too laggy comment doesn't make sense for a drag car....two step and flat foot shifting.

Reading this, I'm thinking the term drag car is rather misleading. I will say that since this doesn't sound like much a racecar build (seeing all the gingerly and street'esque powerband orientation) and so how often to you plan to be removing the turbo?

with the lower RPM, lay out your gear ratios and see where you'll fall back to RPM wise. Choose the turbo that best optimizes that area of band. Keep in mind a flat foot shift will help bring up the tq value over what a dyno run shows.

IIRC, are you chopping the front off the car for a tube front end or something? That gives lots of lovely options for placement of a large front mount turbo and water to air intercooler, like I have waiting for my TIG welder and time (the big item). I'm think Borg S480, as the 9180 is taking forever to see results and is $$$

Last edited by Homemade WRX; 03-25-2011 at 10:22 AM.
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Old 03-25-2011, 12:37 PM   #1854
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As some who actually has a Tial v-band turbine housing, I can tell you that removal and installation is only marginally faster than a 4 bolt T3/T4 GT housing. It also has its own issues. But if is NOT enough of a difference to base a turbo choice on....although it is a nice feature if you pick a GT turbo.
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Old 03-25-2011, 01:50 PM   #1855
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Quote:
Originally Posted by Homemade WRX View Post
Reading this, I'm thinking the term drag car is rather misleading.
how is it misleading?

in the subaru world the people going 9.5-10.0 are/were running gt35, gt40, gt42.....and theres even a gt30 @ 10.0 @ 137mph

So i dont see how a 75 lbm gtx35 isnt considered a "drag" turbo, but a old school gt35 is? a gt40 or gt42 at 80-85lbm are? or an old school gt30?

Its a lightweight car that should makeover 500whp....it doesnt have the brakes to be considered a street car......it doesnt have the suspension mods to be a road race car or a time attack car....its not an autox car....its not a rally car....

if i shouldnt call it a drag car, what should i call it?

we should probably move the convo over to my thread.....

http://forums.nasioc.com/forums/show...2151066&page=2
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Old 03-25-2011, 03:02 PM   #1856
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Quote:
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we should probably move the convo over to my thread.....

http://forums.nasioc.com/forums/show...2151066&page=2
What a great idea!
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Old 03-25-2011, 05:09 PM   #1857
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Quote:
Originally Posted by Phatron View Post
how is it misleading?

in the subaru world the people going 9.5-10.0 are/were running gt35, gt40, gt42.....and theres even a gt30 @ 10.0 @ 137mph

So i dont see how a 75 lbm gtx35 isnt considered a "drag" turbo, but a old school gt35 is? a gt40 or gt42 at 80-85lbm are? or an old school gt30?

Its a lightweight car that should makeover 500whp....it doesnt have the brakes to be considered a street car......it doesnt have the suspension mods to be a road race car or a time attack car....its not an autox car....its not a rally car....

if i shouldnt call it a drag car, what should i call it?

we should probably move the convo over to my thread.....

http://forums.nasioc.com/forums/show...2151066&page=2
Don't get me wrong, I'm just holding you to a higher standard of goals. Don't be offended
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Old 03-27-2011, 12:39 PM   #1858
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So has their been ANY twin scroll data out for any of the EFR's? The only data I've seen so far is ss variation
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Old 03-27-2011, 01:57 PM   #1859
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So has their been ANY twin scroll data out for any of the EFR's? The only data I've seen so far is ss variation
None so far; BW is having manufacturing issues with the TS hotside castings. Once they get everything sorted out you will see them.
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Old 03-28-2011, 12:16 PM   #1860
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Hello everyone, I am in the process of building a kit but I am staying single scroll and I am not going with an EFR turbo. I plan on using the S300sx 83-75 SS .88 A/R on a stock 2.5. This means I will be running low boost until I can build the engine next year. I really do not want to by a turbo to fit my lower boost needs and then upgrade when the engine is built.

So my question is will I have a fun car for the next 9 months only pushing the turbo above to a minimal upper 300-400hp. I guess I am not really sure what to ask...lol?

Parts list:
-Stock internal
-ported manifolds and GS crosspipe
-Ultimate racing T4 external WG up-pipe
-950cc injectors considering I go with E85 I will get larger, (pumps are spread out in my city.)
-Sufficient fuel pump for my needs
-Front Mount

Will I have a laggy boring car to drive with my budget build or will it still be fun?

Sorry for my post, I hope to get some kind of positive response

-Justin
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Old 03-28-2011, 12:45 PM   #1861
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its a 68 lbm turbo.....so it can be laggy....it really depends on the totality of your setup....boost control, avcs tuning, octane, header....

a ported stock manifold should spool it quicker than with an EL header, but you will lose a little topend with the smaller primaries.

it also depends on what type of dyno we're talking about.....you should hit 425-450whp on 93 octane on a dynojet, dynapack or dyno dynamics at 1.2 CF.

Where as on 91 oct on a mustang dyno you will be in the 350-375whp range.
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Old 03-28-2011, 02:00 PM   #1862
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Quote:
Originally Posted by Phatron View Post
its a 68 lbm turbo.....so it can be laggy....it really depends on the totality of your setup....boost control, avcs tuning, octane, header....

a ported stock manifold should spool it quicker than with an EL header, but you will lose a little topend with the smaller primaries.

it also depends on what type of dyno we're talking about.....you should hit 425-450whp on 93 octane on a dynojet, dynapack or dyno dynamics at 1.2 CF.

Where as on 91 oct on a mustang dyno you will be in the 350-375whp range.
I guess I am not so much worried about numbers just safe power and as sufficient as possible with the current setup. I will worry about numbers when my engine can handle it. I guess I am just hoping to get smooth power out of a low boost large turbo setup which is funny to say, but I just need it to hold me over until I build the engine. It is my daily after all.

I keep seeing all these built engine GT30 cars pushing corrected HP in the upper 300's and I guess I am getting nervous as well as anxious to know what I can do on a stock block safely?!

-Justin
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Old 03-28-2011, 02:16 PM   #1863
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Quote:
Originally Posted by armyssoldierboy View Post
So has their been ANY twin scroll data out for any of the EFR's? The only data I've seen so far is ss variation
with the twinscroll turbine housing supply being what it is - there is only one group that received functional twinscroll housings for the EFR: Sierra Sierra Enterprises, thats why we've been busy testing with the singlescrolls, they are all we have to work with until late-april

Quote:
Originally Posted by MartinSTi05 View Post
None so far; BW is having manufacturing issues with the TS hotside castings. Once they get everything sorted out you will see them.
BW has all the housings, and they are in the process of being machined. The entire process takes 7-8 weeks from start to finish and we are still looking good for april delivery

Quote:
Originally Posted by spiltheflagon View Post
Hello everyone, I am in the process of building a kit but I am staying single scroll and I am not going with an EFR turbo. I plan on using the S300sx 83-75 SS .88 A/R on a stock 2.5.
The 83-75 is a great turbo, and we've had a number of customers run it in singlescroll configuration with good results. Basically it behaves like a GT3582R singlescroll, so try and find some plots of that turbo on stock motor to get an idea of what you are going to see, and people's impressions. While the EJ engines have very strong rods/cranks the pistons are the weakpoint obviously, so running E85 will allow you to safely run more boost and make more power than pump gas
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Old 03-28-2011, 02:16 PM   #1864
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Justin, your block will be fine provided there is a quality tuner helping you out.

I'm running my 83-75 daily with ~20 Psi on 90 and Meth. I too have a stock bottom end for now (old setup threw a rod).

Lag seems minimal in twinscroll configuration, boost climbs to 20 within one second of punching it at 4000rpm in all gears besides first
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Old 03-28-2011, 03:03 PM   #1865
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Originally Posted by AKSubieDubie View Post
Justin, your block will be fine provided there is a quality tuner helping you out.

I'm running my 83-75 daily with ~20 Psi on 90 and Meth. I too have a stock bottom end for now (old setup threw a rod).

Lag seems minimal in twinscroll configuration, boost climbs to 20 within one second of punching it at 4000rpm in all gears besides first
Thanks guys for all your help, I am glad I posted here because I think I just got a seller with exactly what I want!

Quote:
Originally Posted by Full-Race Geoff View Post
The 83-75 is a great turbo, and we've had a number of customers run it in singlescroll configuration with good results. Basically it behaves like a GT3582R singlescroll, so try and find some plots of that turbo on stock motor to get an idea of what you are going to see, and people's impressions. While the EJ engines have very strong rods/cranks the pistons are the weakpoint obviously, so running E85 will allow you to safely run more boost and make more power than pump gas
Thanks for the info, I am starring at plots right now!

-Justin
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Old 03-28-2011, 11:28 PM   #1866
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I ran the 83-75 in TS. So it is apples to oranges. But I know that it will support well over 550hp ATW. It is also much more affordable than the 35r.
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Old 03-28-2011, 11:32 PM   #1867
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What did you ever do with that kit ?
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Old 03-29-2011, 08:13 AM   #1868
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What did you ever do with that kit ?
Sold the turbo, have the piping. My plan is to resurrect it with an efr 83-74 and or 9180.
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Old 03-29-2011, 11:09 AM   #1869
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Geoff, how would you compare the 9180 and the S480 in a head to head test. I'm about to just bite the bullet and pick up the S480 as I know what it's capable of and waiting on results of the more costly 9180 is getting rather long in the tooth.

Thanks.
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Old 03-29-2011, 12:38 PM   #1870
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Originally Posted by MartinSTi05 View Post
Sold the turbo, have the piping. My plan is to resurrect it with an efr 83-74 and or 9180.
sold to me! my car should be on the road in the next couple weeks.
here is the ts manifold a local built for me:
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Old 03-29-2011, 02:26 PM   #1871
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Quote:
Originally Posted by MartinSTi05 View Post
Sold the turbo, have the piping. My plan is to resurrect it with an efr 83-74 and or 9180.


Quote:
Originally Posted by MartinSTi05 View Post
I ran the 83-75 in TS. So it is apples to oranges. But I know that it will support well over 550hp ATW. It is also much more affordable than the 35r.
agree 100%, its a great turbo thats very reliable/affordable and gets the job done. To this day your setup is still the most solid performing dynoplot ive ever seen for this turbo (for any 4 cyl engine)

Quote:
Originally Posted by Homemade WRX View Post
Geoff, how would you compare the 9180 and the S480 in a head to head test. I'm about to just bite the bullet and pick up the S480 as I know what it's capable of and waiting on results of the more costly 9180 is getting rather long in the tooth
IMHO the 9180 is going to destroy the S480 in every way imaginable on a 4 cyl EJ engine. That being said, if you absolutely are set on going with an 80mm inducer turbo - Id suggest waiting for the new 2011 S400SX turbos to come out late may... brand new 87mm turbine wheel aero and a forged billet compressor wheel with update aero
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Old 03-29-2011, 03:41 PM   #1872
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Quote:
Originally Posted by Full-Race Geoff View Post
IMHO the 9180 is going to destroy the S480 in every way imaginable on a 4 cyl EJ engine. That being said, if you absolutely are set on going with an 80mm inducer turbo - Id suggest waiting for the new 2011 S400SX turbos to come out late may... brand new 87mm turbine wheel aero and a forged billet compressor wheel with update aero
Can you give me some data on the S400sx that coming out? Price? Will it be/is it on MB? can't check now as I can't load shockwave on the dyno cell computer

It's for a standing mile setup that would hit the strip then too if the $12k dogbox that'll hold it were made affordable. That'll just have to wait though.

Last edited by Homemade WRX; 03-29-2011 at 03:47 PM.
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Old 03-29-2011, 07:22 PM   #1873
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Quote:
Originally Posted by 4drcivicmaster View Post
sold to me! my car should be on the road in the next couple weeks.
here is the ts manifold a local built for me:
Is that the Chimera performance/fobiawrx twinscroll setup? Looks killer...
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Old 03-29-2011, 08:24 PM   #1874
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That it is
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Old 03-29-2011, 10:07 PM   #1875
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Originally Posted by 4drcivicmaster View Post
sold to me! my car should be on the road in the next couple weeks.
here is the ts manifold a local built for me:
Good luck with your build. I am anxious to see numbers!
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