Turbo sizing help?
11-02-2011, 08:05 AM
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Turbo sizing help? Hey guys need some help with turbo sizing. I was looking into building up my jeep 4.0..figured a stock rebuild witha cheap turbo setup would be more fun/powerful!
Specs is a 4.0L redline at 5000rpm, not really sure on what I want for power, but 6-10psi max..
Would like max boost around 2800-5000rpm. Only worry would be too much PTB since I'll be using a piggyback to tune it..PTB would cause it to lean out in closed loop and detenate so trying to aviod or get as little ptb as possible!
I race the jeep often..well get on it often and take her to redline..ain't much racing going on lol. Anyway its a 5 speed so its fun to drive!
So far I've seen 2 different versions used..both .60 compressors..1 being a .63 & the other a .48 exhaust side.
Question is would it be smarter to go smaller on the compressor side? Theres a couple .50 compressor, .57 or .63 exhaust.
Really curious here..I can't rear compressor maps that well, so maybe I can get some help? Any Holsets out there that are a good size..maybe a HX40?
Really need some help on this one guys.
Jeep with see 6-8lbs..possibly up to 10lbs if it will take it. Tuning with a piggyback..703 neon injectors..22.2lbs pretty much & meth injection, full 3" exhaust! Ported head, stock cam...
Specs is a 4.0L redline at 5000rpm, not really sure on what I want for power, but 6-10psi max..
Would like max boost around 2800-5000rpm. Only worry would be too much PTB since I'll be using a piggyback to tune it..PTB would cause it to lean out in closed loop and detenate so trying to aviod or get as little ptb as possible!
I race the jeep often..well get on it often and take her to redline..ain't much racing going on lol. Anyway its a 5 speed so its fun to drive!
So far I've seen 2 different versions used..both .60 compressors..1 being a .63 & the other a .48 exhaust side.
Question is would it be smarter to go smaller on the compressor side? Theres a couple .50 compressor, .57 or .63 exhaust.
Really curious here..I can't rear compressor maps that well, so maybe I can get some help? Any Holsets out there that are a good size..maybe a HX40?
Really need some help on this one guys.
Jeep with see 6-8lbs..possibly up to 10lbs if it will take it. Tuning with a piggyback..703 neon injectors..22.2lbs pretty much & meth injection, full 3" exhaust! Ported head, stock cam...
Last edited by Kamaran; 11-02-2011 at 08:17 AM.
11-02-2011, 08:42 AM
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i wanted to do this to my 4.0 before i swaped it out for a sbc. I would say the .63 its a bigger motor then a honda but doent rev but till 4,500. maybe this one if your on the cheap.
http://www.ebay.com/itm/On-3-Perform..._Parts&vxp=mtr
http://www.ebay.com/itm/On-3-Perform..._Parts&vxp=mtr
11-02-2011, 08:46 AM
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Thats even bigger than what I was originally looking at lol...probably to big.
I was looking at a 60 trim you could say....60 compressor side, .63 exhaust.
Any ideas on using a 50 trim maybe?
I was looking at a 60 trim you could say....60 compressor side, .63 exhaust.
Any ideas on using a 50 trim maybe?
11-02-2011, 11:03 AM
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too small? Dang you guys go big here lol!
Gt40 on a 4.0L inline six? Only running 5k and only pushing 6-8psi! Dang..I gotta look online more.. those turbos just seem huge for this motor!
Gt40 on a 4.0L inline six? Only running 5k and only pushing 6-8psi! Dang..I gotta look online more.. those turbos just seem huge for this motor!
11-02-2011, 11:37 AM
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i have a 60mm garret journal bearing turbo sitting on my dining room floor. It was from the original STS kit (60mm setup) it would be good for 450HP ~60LB/min of air. I can get the rest of the specs if you are interested. I'm not using it as I have a 76mm turbonetics now
60 would be about perfect for that size motor, us LS1 5.7L guys need at least a 67mm to do anything worth a damn.
60 would be about perfect for that size motor, us LS1 5.7L guys need at least a 67mm to do anything worth a damn.
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11-02-2011, 05:56 PM
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i have a 60mm garret journal bearing turbo sitting on my dining room floor. It was from the original STS kit (60mm setup) it would be good for 450HP ~60LB/min of air. I can get the rest of the specs if you are interested. I'm not using it as I have a 76mm turbonetics now
60 would be about perfect for that size motor, us LS1 5.7L guys need at least a 67mm to do anything worth a damn.
60 would be about perfect for that size motor, us LS1 5.7L guys need at least a 67mm to do anything worth a damn.
Specs & sizing? Price? I come from boosted single 2jz's so I know enough..but the small rpm band had me tripping..didn't want PTB but wanted fast spool..and at least 2500rpm of full boost, redlines at 5000rpm lol so its a tough feet..gonna should for full boost by 3000 I guess to make it easier.
11-02-2011, 06:08 PM
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heres what I've come up with...2 guys 2 different turbos. Either one aren't much help llol...
.50 compressor, .63A/r & the other runs a .60 compressor with .48A/r
Trying to decide between the 2..again I'd only be running 8lbs..possibly 10lbs max, so room to grow isn't a concern what so ever!
.50 compressor, .63A/r & the other runs a .60 compressor with .48A/r
Trying to decide between the 2..again I'd only be running 8lbs..possibly 10lbs max, so room to grow isn't a concern what so ever!
