IDAHOTUNERS: Big Bore Sr22 Twinscroll Gt30 Build

For the RWD SR20DET cars! Sponsored by Wiring Specialties.
User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

Well got her running and took her for a drive. Pumpped the bad fuel out. Put 5 gallons 92 in. Then it sat for about a month while I went to school. Came back ordered a z32 Isis maf. Got 5 gallons from our tank of 87 and she fired up. So when I drove it into town I took it easy. It had 93+87 mix so like 89 in the tank but 92 in the line. I was just going about 25% throttle never wot. 10 psi came on clean and strong for about 8 mins and damn the wastegate sounds harass when it opens up. Only twelve inch dump pipe. But when the 92 was burnt out of the lines and the 87+92 mix kicked in as soon as it hit boost I felt it retard timing as soon as hit hit any boost. Then when I topped it off with 100 I could tell it wasn't retarding. But it would miss right at 4 psi and just keep missing at anything above that. But at partial throttle still it pulled smooth off boost and up to 4 psi.

It actually hit 4 psi in 4 th gear at 3000 rpms and third gear it hit 4 psi at 3500 Rpms.

So I think some new coils. And cooler spark plugs. And a little timing adjustment should get it fixed.

Also its over heating while driving in and out of my 2 mile drive way under 15 MPH. But as soon as I get on the high way. It runs the normal temp. I might get a cooler thermostat. And the electric fans were working but now seem to be flaky. I know they are wired up right.

But normal to have some things to sort out which is normal.

But over all seems fine. Some good off boost power. But I am back to work. Four. Ten hour days 400 miles from home. So only get to mess with it on the weekends.


User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

Well got her running and took her for a drive. Pumpped the bad fuel out. Put 5 gallons 92 in. Then it sat for about a month while I went to school. Came back ordered a z32 Isis maf. Got 5 gallons from our tank of 87 and she fired up. So when I drove it into town I took it easy. It had 93+87 mix so like 89 in the tank but 92 in the line. I was just going about 25% throttle never wot. 10 psi came on clean and strong for about 8 mins and damn the wastegate sounds harass when it opens up. Only twelve inch dump pipe. But when the 92 was burnt out of the lines and the 87+92 mix kicked in as soon as it hit boost I felt it retard timing as soon as hit hit any boost. Then when I topped it off with 100 I could tell it wasn't retarding. But it would miss right at 4 psi and just keep missing at anything above that. But at partial throttle still it pulled smooth off boost and up to 4 psi.

It actually hit 4 psi in 4 th gear at 3000 rpms and third gear it hit 4 psi at 3500 Rpms.

So I think some new coils. And cooler spark plugs. And a little timing adjustment should get it fixed.

Also its over heating while driving in and out of my 2 mile drive way under 15 MPH. But as soon as I get on the high way. It runs the normal temp. I might get a cooler thermostat. And the electric fans were working but now seem to be flaky. I know they are wired up right.

But normal to have some things to sort out which is normal.

But over all seems fine. Some good off boost power. But I am back to work. Four. Ten hour days 400 miles from home. So only get to mess with it on the weekends.

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

Thanks. Its feels awesome even off Boost just reving to 3500 next u know your breaking 100. If I can get these issues resolved. I got a Dyno date the 29th. Found 100 octane for 5.30 a gallon though

User avatar
badbob2121
Posts: 1989
Joined: Sat Jan 16, 2010 9:23 am
Car: 92 S13 Hatch ELLIS JUAN, 12 Mustang GT RTR
Location: St. Louis

Post

Good to hear its moving

Looking forward to some dyno results!

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

Got some split fires coils coming and ngk 9s and I am going to swap the case and ignitor out. And also do a boo timing when in boost. Then its in the tunest leak test. If nothing is corrected as far as break up in ignition

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

well got it running pretty solid now, still having starting issues. only wants to fire off starting fluid or a roll start. i have put two different starters in and you can tell they are not the strongest. so maybe need to rebuild one. but it pulls like a big non turbo engine on 7 pounds, i need to get on a dyno to set it up for more boost cause there is really no way i could do it on the street. with out going 130+
.

User avatar
maverick06xx
Posts: 66
Joined: Thu Jan 24, 2008 7:43 am

Post

IDAHO i got a question off topic, i right now currently have a built bottom and topend. My topend has 1mm oversize valve both intake/exhaust, bc valve train, and stage 3 272 cams with ported and polished 3 angel valve job. Right now i'm looking for a turbo that can make 500whp with some mid to topend power. As we all dont want to run high boost for dd i want something thats quick on low boost and even faster on high boost. The turbo i currently have but havent used yet is a AGP delta 48 with a a/r 63. I'm looking for something journal bearing also, what do u suggest?

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

if you want it on pump gas, and money isnt a huge issue i would look at a twin scrol gt35 .72, or a single scroll .63 gt35, or a BW 256 or the new 6262 i believe that isa bw also

User avatar
maverick06xx
Posts: 66
Joined: Thu Jan 24, 2008 7:43 am

Post

money is deff an issue but not to the point i want a ebay turbo. There is a site called usedturbo dot net and under rebuilt turbos think its 600-800hp i am looking at either the Precision-6076S-T4-610HP or the Precision 6162S T4 0.58 a/r 640HP but i know i want something journal bearing. The turbo i have now but thinking of selling is an AGP delta 48 with an a/r 63 maxes out at 480whp. I would really like something journal bearing since rebuilding them isnt really expensive!

User avatar
maverick06xx
Posts: 66
Joined: Thu Jan 24, 2008 7:43 am

Post

i would like pump gas and something as close to 500whp i'll even be happy with 450whp but i want something that can give me a power band from 4500-7500 since i'm runing the stage 3 bc cams and bc valve springs and retainers!

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

my gt3076 makes boost at 3500 and will make 450 on pump. your going have little to no power band with the turbos your looking at. expect boost at 5000, unless you run a .63 hot side atleast

User avatar
maverick06xx
Posts: 66
Joined: Thu Jan 24, 2008 7:43 am

Post

Idaho on that site do u recommend anything?

User avatar
maverick06xx
Posts: 66
Joined: Thu Jan 24, 2008 7:43 am

Post

Also a guy i talk to from the site recommend 2 turbos

*Precision 5252 specs is
590hp Journal Bearing T3/T4
Compressor Wheel Diameter: 59mm
inducer 59mm
360° Thrust Bearing
"T3 4Bolt" - .48, .63, .82
other is
*Precision 6031 Turbo
590hp Journal Bearing T3/T4

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

sorry folks i have been busy traveling, but i have an update, i purchased a wiring specialties harness, it wasn't bad fuel it wasn't a bad starter, it was me being a hard and wiring resistors in the wrong wires, but with the new harness installed, and the two chassi power plugs wired and replugged along with the dash plug wired in now, the car fires right up.

User avatar
2_Liter_Turbo
Posts: 2980
Joined: Sat Jan 24, 2004 10:41 am
Car: _________________
'96 S14 Coupe: SR20VET
'90 R32 TH1 GTR: RB26DETT
'92 S13 Fastback: SR20DET
'11 V36 Sedan: VQ25HR
'06 GMT800 2500HD: LBZ Duramax
Location: DFW, Texas
Contact:

Post

Awesome dude!

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

http://youtu.be/NEnc8gNVLVE video of me f*** around in the driveway today thanks to there being to much snow to get to the highway , but i got it registered today, just waiting on snow to LEAVE

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

starting having issues with it missing in boost, installed a different cas and made a huge difference not a single hiccup and pulls to red line like a monster, time to crank it up

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

http://youtu.be/BPoHokvLULc 3rd gear pull to pass a car

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

put 300 miles on the car saturday, drove around our lake twice, it was a good drive , the first time i was running avgas, smelled like rotten eggs behind me haha from the sulfur and lead. but not a single problem, other then it wasted to kick out on me in the cover and one missed shift, now just to tune the avcr some more so boost comes on harder.

User avatar
2_Liter_Turbo
Posts: 2980
Joined: Sat Jan 24, 2004 10:41 am
Car: _________________
'96 S14 Coupe: SR20VET
'90 R32 TH1 GTR: RB26DETT
'92 S13 Fastback: SR20DET
'11 V36 Sedan: VQ25HR
'06 GMT800 2500HD: LBZ Duramax
Location: DFW, Texas
Contact:

Post

When you coming down to my neck of the woods?! We need to go for a drive man!

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

july i should be that direction to do some deep sea fishing

User avatar
2_Liter_Turbo
Posts: 2980
Joined: Sat Jan 24, 2004 10:41 am
Car: _________________
'96 S14 Coupe: SR20VET
'90 R32 TH1 GTR: RB26DETT
'92 S13 Fastback: SR20DET
'11 V36 Sedan: VQ25HR
'06 GMT800 2500HD: LBZ Duramax
Location: DFW, Texas
Contact:

Post

Well definitely hit me up man

User avatar
idahotuner
Posts: 10583
Joined: Thu Jun 28, 2007 7:11 am
Car: 2012 ram 2500 6.7 cummins, 93 Sileighty and 93 civic hatch, polaris ranger 2011
Contact:

Post

Image
490hp and 454 ft lb at 25psi


Return to “SR20DET Forum (rear-drive)”