Dynoed T3/T4 upgraded RB20 today...

[driftjunke]

Since we don't see many numbers from 20's we just finished a T3/T4 upgrade on a RB20, .63 AR exhaust, 50 trim compresser, with a HKS standard wastegate, on a modified turbo manifold, opened up the center section all the way, and mounted the wastegate on the back half of the manifold. Wastegate set for 1 bar, stock fuel injectors, SAFC2, and a Supra 7MGTE FMIC. At 14psi it hit 296hp and 258tq during a 4th gear pull until it shut down at 120 at 6500 rpms, kept pulling hard though, the line would have kept going and probably hit 320 if there wasn't a speed cut and we had bigger injectors. AF's were between 11-11.5 actually had to lean the SAFC2 down to -11% around 5000 and 5800. Car pulls like a monster. pulled hard on a STI right after the dyno runs, and walked all over a 04 GT with boltons.

I'll get some pics of the setup and the dyno chart this week, digital walked off and I have to get the funcam developed.

E

Here's the car, http://www.e-emotorsports.com/jeremyrb240.php Hatch with R32 front.

[DriftingisLame]

Wow, I'm like 100% more exited now for my motor to run!

Can you post a list of all of your mods?

Man we got the same seats, and BOV...

[Yellow4g63]

Since we don't see many numbers from 20's we just finished a T3/T4 upgrade on a RB20, .63 AR exhaust, 50 trim compresser, with a HKS standard wastegate, on a modified turbo manifold, opened up the center section all the way, and mounted the wastegate on the back half of the manifold. Wastegate set for 1 bar, stock fuel injectors, SAFC2, and a Supra 7MGTE FMIC. At 14psi it hit 296hp and 258tq during a 4th gear pull until it shut down at 120 at 6500 rpms, kept pulling hard though, the line would have kept going and probably hit 320 if there wasn't a speed cut and we had bigger injectors. AF's were between 11-11.5 actually had to lean the SAFC2 down to -11% around 5000 and 5800. Car pulls like a monster. pulled hard on a STI right after the dyno runs, and walked all over a 04 GT with boltons.

I'll get some pics of the setup and the dyno chart this week, digital walked off and I have to get the funcam developed.

E

Here's the car, http://www.e-emotorsports.com/jeremyrb240.php Hatch with R32 front.

Damn I bet that stock maf must be close to maxing out. Good #'s, Why do you guys use a 4th gear pull if your doing 120 on the dyno? The Shop I use to work at we had the speed limiter set at 125 I think on the dyno jet. Anyways good #'s wish I could get mine done as fast

[goofynick6]

Yikes..that's awesome. I'm dyno'ing today...t3/t04e 57 trim (wish it was a 50 trim!) 18psi, z32 maf, 550cc's...we'll see what happens!

What type of dyno was it?

Nick

[y3llows14]

Where you dyno at man? I really need to get mine dyno when I get back. Im also picking up another rb20 pretty soon too. Just a shameless plug for E-E, they are very cool guys to deal business with and has great prices for Origin and Version Select kit

[tight240]

I want to see how you modified the stock exhaust manifold, I have an upgrade and im not trying to spend $600 plus for an exhaust mani if i can just modify mine. Plus it will pro-long the motor going into the car

[goofynick6]

Take it back, not dynoing today. My damn alignment was so bad, and I hadn't put any miles on it since suspension changes, I got halfway to the dyno (2 hours away) and had to turn back because cords were showing on my tires

Nick

[driftjunke]

We dyno our cars over at Mainstream Performance down the road from our shop, Charles lets us do our own tuning there.

Here's a run down of the car,

Everything is stock, still stock injectors, stock mafT3/T4 .63ar 50 trimHKS standard wastegateE&E Modified stock turbo manifold3 inch turbo back straight pipesWalbro 255small 7MGTE Supra FMIC20 base timingSAFC2NISMO Sweat bands on resevoirsSkyline radiator

Power hits and pulls all the way to redline starting at about 3200. We did the 4th gear pull to get the max power. It was a dynotjet dyno.

Appreciate the plug also, send me some pics when you get it finsihed. You still have that Power FC you want tuned? We had to send the last one back to Japan for a re-tune.

Nick, we also need some sets of your copper exhaust manifold gaskets, I'll email you about them.

Eric

[Wulfgang]

That's good news. So the old assumption of 250ish max rwhp for stock injectors/MAF is too conservative, especially if you were still at 11.5:1.

300 rwhp is a good goal. So I should be able to make that with a slightly smaller turbo (for faster spool) and/or maybe a bit less boost to be able to hit 300 rwhp right around 7000 rpm without going lean, right? Can anyone suggest a turbo?

[driftjunke]

We were thinking of running the .48 ar exhaust housing, but that will be another day. We'll keep everyone updated, we're shooting for 400 next week same turbo, fmic twice the size, alcohol injection, 440's, and z32 maf.

Eric

[Yellow4g63]

which injection kit? I found this one on line and thinking about running it cause of the piss water gas we have here in cali. http://www.coolingmist.com/

[SeVa-S13]

I demand a dyno sheet or atleast general details of when boost comes on and whatnot. kthx <3

[driftjunke]

We use the SMC alcohol injection kit, runing pure alcohol. There kits are boost progressive, and very nice. Thursday we're doing another car same turbo setup, the 440's, big 24x12x3 fmic, SAFC2, and the alky kit. I think we might try and go for close to 400 at the wheels with this one. We have 6 rb20 powered 240 customers here racing to see who can pull the most out of their RB20.

I'll post dyno charts soon.

Eric

[Andrew85cm]

Where did you get that progressive alcohol injection kits. Sounds pretty sweet. Those are some good numbers though with stock mafs and stuff. I already got some 7mgte 440cc injectors gotta get a maf and a turbo in and im set. Good to see some guys taking the RB20 seriously. I get so much crap when ever people ask what motor I have. It's not a rb25 or rb26. **** I would have got a SR before that. I just keep quiet. Today I had some ***holes at the inspection station saying I should have dropped a 350 motor in there for the money I spent. I was like get off my nuts and get out of my car. She did pass again for the second year in a row with not speedo working.~ANDREW~

[seyath]

Sorry for the thread jacking, but that R32 front end looks simply amazing. How was the fitment and avg cost of the whole project?

[driftjunke]

The kits are SMC kits, huge with all of the GN, EVo, and WRX guys. It's nice, cause you can set it to where you want it to kick ing at, and it will increase with the boost. One of our EVO's we did it on actually hit a record with it, 389hp 420tq at 28 psi on a stock turbo with only cams, Buschur FMIC, eletronic cut out with the SMC kit, all on pump gas. Before it was only 327 at 24 psi on racing fuel. Big difference. I like the RB20's, mainly because of pricing, but there are too many SR's here, kind of like Hondas, I have a lot of kids ask me about my SR swap when I pull into parking lots with 3-4 inch straight pipe exhaust. I just ask them, have you ever heard a SR sound like a circuit car? But we're gonna push the RB20's and see what can be pulled out of them.

As for the 32 front, we made custom brackets for everything to hold it in. Sits tighter than most stock front ends and doesn't need hood pins. He wound up spending right under a grand for everything including front end. Fitment is great all the way around except for right at the doors, they still bulge out, but we're doing a 50mm widebody on it so we're keeping it that way. We did a R33 front end yesterday and it fits up even better, I will get some pics.

Eric

[rbsileighty]

We were thinking of running the .48 ar exhaust housing, but that will be another day. We'll keep everyone updated, we're shooting for 400 next week same turbo, fmic twice the size, alcohol injection, 440's, and z32 maf.

Eric

I'm running a similar t3/t4 w/ .48 and it's insta-spool... pushing a massive .4-.5 bar right now since it is running an actuator from the Honda DRAG kit the turbo came from. It works since it's on it's starting to leak a little oil... so no dyno numbers. I picked this one up cheap to run the car b/c I gave my stock turbo to a buddy who blew his stock one while I was doing my build.

Someone can correct me if I'm wrong, but I'd say the .48 is a bit small... if you are hitting good power at 3200... sounds good to me with those power levels... and at 1 bar and the 50 housing you are already getting outside of the good eff ranges of that housing with those power levels (300 rwhp).

Wulfgang... I'd say pick up a used GT2530 for those power levels... I think some AU guys use that turbo for those numbers. Go with internal gate for the response... in my opinion.

[Wykid 240]

Great numbers man! He, what front-end is that?

-Jeramy

[Yellow4g63]

I'm running a similar t3/t4 w/ .48 and it's insta-spool... pushing a massive .4-.5 bar right now since it is running an actuator from the Honda DRAG kit the turbo came from. It works since it's on it's starting to leak a little oil... so no dyno numbers. I picked this one up cheap to run the car b/c I gave my stock turbo to a buddy who blew his stock one while I was doing my build.

Someone can correct me if I'm wrong, but I'd say the .48 is a bit small... if you are hitting good power at 3200... sounds good to me with those power levels... and at 1 bar and the 50 housing you are already getting outside of the good eff ranges of that housing with those power levels (300 rwhp).

Wulfgang... I'd say pick up a used GT2530 for those power levels... I think some AU guys use that turbo for those numbers. Go with internal gate for the response... in my opinion.

Not sure how the .48 would work on a RB. On a SR it would be too small to make 400hp with. Who knows it could work but it would spool up fast tho.

[driftjunke]

R32 front end.

Eric

[Carl H]

now the real trick is to see if the money i spent on the gt30r was worth it :p.

[driftjunke]

Should be.

Eric

[Aznboi64]

WOW! Great work Driftjunkie. There was this great deal for a RB25 locally for $1200. But since that person didn't contact me back I'm getting an RB20 instead. I'm impresses at the #'s and spool at such a low rpm. Also please post up the R33 conversion. I was going for the R32 GTR but with a R33 it might sway my decision.
Modified by Aznboi64 at 7:22 AM 7/6/2005

[Carl H]

WOW! Great work Driftjunkie. There was this great deal for a RB25 locally for $1200. But since that person didn't contact me back I'm getting an RB. I'm impresses at the #'s and spool rpm. Also please post up the R33 conversion. I was going for the R32 GTR but with a R33 it might sway my decision.

and wow, none of the stuff you said was relevant to the car.the engine is an rb20, which is out of the r32 and the front end is also a r32.

[Aznboi64]

I know all that info from his first posting. But he noted he also has a R33 conversion. Thats a pic that I want to see.

[a_ahmed]

im curious on that r33 conversion... i wnated to see it no one posted in this thread since

[jrb92se]

not bad!!

[DriftingisLame]

hella old thread

[gbaz77]

rb20s ftw! this just shows that with the extra money spent on an rb25 via new driveshaft, extra for the engine set itself, and any custom downpiping to miss the steering rack, you can get more than what a stock rb25 will give with just a new turbo and injectors (and in this case just the turbo, however bigger injectors should be included for safety of the engine). i cant wait to do the same . thanks for sharing.