35/40 Limitations
02-24-2004, 10:40 AM
#1
Senior Member
Thread Starter
Join Date: Jun 2002
Location: La Plata, Maryland
Posts: 9,725
Could I get some feed back from some gt35/40 owners.
I hear that the top end on these dies off pretty fast.
What are your driving impressions of this turbo.
Please dont bother posting graphs, or chart comparisons, It would go right over my head and I still wouldnt know what to expect from one.
I'm bored with my set up and want something faster. I dont need big horsepower. Somewhere just over 400 would be all I really want. I'm not huge on the track so I just don't have a need for BIG HP.But all the local stuff that Iam competing with has gobs of low end and I need something that will get me to 120 mph before everyone else.
I ran into a Supercharged 5.notsoslow, and I got pulled on due to a torn coupler, but I dont want to let that stuff happen again, even if a torn coupler was to blame this time.
Thanks for any input.
I hear that the top end on these dies off pretty fast.
What are your driving impressions of this turbo.
Please dont bother posting graphs, or chart comparisons, It would go right over my head and I still wouldnt know what to expect from one.
I'm bored with my set up and want something faster. I dont need big horsepower. Somewhere just over 400 would be all I really want. I'm not huge on the track so I just don't have a need for BIG HP.But all the local stuff that Iam competing with has gobs of low end and I need something that will get me to 120 mph before everyone else.
I ran into a Supercharged 5.notsoslow, and I got pulled on due to a torn coupler, but I dont want to let that stuff happen again, even if a torn coupler was to blame this time.
Thanks for any input.
02-24-2004, 10:58 AM
#2
Senior Member
Thread Starter
Join Date: Jun 2002
Location: La Plata, Maryland
Posts: 9,725
Felt like a dumbass, I just saw the other topic on the sam matter. Anyway my question still stands since that thread got off the gt35/40 topic.
Where are this turbos limitations?
What horsepower should be expeted for say 17psi on pump gas?
Is the 35/40 the answer to my prayers?
Where are this turbos limitations?
What horsepower should be expeted for say 17psi on pump gas?
Is the 35/40 the answer to my prayers?
02-24-2004, 11:48 AM
#4
Senior Member
Join Date: Jan 2003
Location: London, Ontario
Posts: 2,871
Dave,
Play around with Wargasm's dyno page some. There's only 3 35/40 dynos on there.
Here's one showing:
- Dick Lamberts stock turbos (probably perfectly maintained and tuned) don't know if it's ported or not.
- Ihor's 35/40 @ 15 psi and 20 psi. Heavily street-ported engine, we've all seen video of it running, I think.
- Toy's 35/40 @ 16 psi. don't know if it's ported.
- RP T78 car. don't know if it's ported either.
Up to about 3800 RPM the stock twins are putting out more power. Stock and 35/40 clearly spank this T78.
However, with a bigger turbo I've seen power to match the 35/40 with almost no porting, (ie. sounds exactly like stock).
Serious porting can make a BIG turbo spool quickly, but you also need a well designed manifold to help.
GT35R VS stock twins VS T78
Hey, and keep in mind you're racing a 2.6L motor DESIGNED for high RPM against 5L and up motors designed for low RPM. You can't make the motor do what it's not designed to do no matter what you strap to it, unless you want to use nitrous.
Play around with Wargasm's dyno page some. There's only 3 35/40 dynos on there.
Here's one showing:
- Dick Lamberts stock turbos (probably perfectly maintained and tuned) don't know if it's ported or not.
- Ihor's 35/40 @ 15 psi and 20 psi. Heavily street-ported engine, we've all seen video of it running, I think.
- Toy's 35/40 @ 16 psi. don't know if it's ported.
- RP T78 car. don't know if it's ported either.
Up to about 3800 RPM the stock twins are putting out more power. Stock and 35/40 clearly spank this T78.
However, with a bigger turbo I've seen power to match the 35/40 with almost no porting, (ie. sounds exactly like stock).
Serious porting can make a BIG turbo spool quickly, but you also need a well designed manifold to help.
GT35R VS stock twins VS T78
Hey, and keep in mind you're racing a 2.6L motor DESIGNED for high RPM against 5L and up motors designed for low RPM. You can't make the motor do what it's not designed to do no matter what you strap to it, unless you want to use nitrous.
02-24-2004, 01:29 PM
#5
Senior Member
Thread Starter
Join Date: Jun 2002
Location: La Plata, Maryland
Posts: 9,725
Originally Posted by TYSON' date='Feb 24 2004, 09:48 AM
Dave,
Play around with Wargasm's dyno page some. There's only 3 35/40 dynos on there.
Here's one showing:
- Dick Lamberts stock turbos (probably perfectly maintained and tuned) don't know if it's ported or not.
- Ihor's 35/40 @ 15 psi and 20 psi. Heavily street-ported engine, we've all seen video of it running, I think.
- Toy's 35/40 @ 16 psi. don't know if it's ported.
- RP T78 car. don't know if it's ported either.
Up to about 3800 RPM the stock twins are putting out more power. Stock and 35/40 clearly spank this T78.
However, with a bigger turbo I've seen power to match the 35/40 with almost no porting, (ie. sounds exactly like stock).
Serious porting can make a BIG turbo spool quickly, but you also need a well designed manifold to help.
GT35R VS stock twins VS T78
Hey, and keep in mind you're racing a 2.6L motor DESIGNED for high RPM against 5L and up motors designed for low RPM. You can't make the motor do what it's not designed to do no matter what you strap to it, unless you want to use nitrous.
Play around with Wargasm's dyno page some. There's only 3 35/40 dynos on there.
Here's one showing:
- Dick Lamberts stock turbos (probably perfectly maintained and tuned) don't know if it's ported or not.
- Ihor's 35/40 @ 15 psi and 20 psi. Heavily street-ported engine, we've all seen video of it running, I think.
- Toy's 35/40 @ 16 psi. don't know if it's ported.
- RP T78 car. don't know if it's ported either.
Up to about 3800 RPM the stock twins are putting out more power. Stock and 35/40 clearly spank this T78.
However, with a bigger turbo I've seen power to match the 35/40 with almost no porting, (ie. sounds exactly like stock).
Serious porting can make a BIG turbo spool quickly, but you also need a well designed manifold to help.
GT35R VS stock twins VS T78
Hey, and keep in mind you're racing a 2.6L motor DESIGNED for high RPM against 5L and up motors designed for low RPM. You can't make the motor do what it's not designed to do no matter what you strap to it, unless you want to use nitrous.
I imagine he could get me where I want to be as long as this turbo is willing.
Thanks for the link to Brians page.
I still would like to know where does the 35/40 fall off and where is it's effincey range?
Thanks for chimming in.
02-24-2004, 01:36 PM
#7
Senior Member
Thread Starter
Join Date: Jun 2002
Location: La Plata, Maryland
Posts: 9,725
Wow, in that dyno comparison the 35/40 looks like the ****!
The t-78 really has a sketchy power band, laggy then spoolin but still not nice and smooth.
The 35/40 seems to be really smooth.
I like.
Red line is a t-78
Purple line is twins
Blue is a 35r on 16 psi
Green lines are both 35R, Light green is at 20 psi , and dark green is at 15 psi.
The t-78 really has a sketchy power band, laggy then spoolin but still not nice and smooth.
The 35/40 seems to be really smooth.
I like.
Red line is a t-78
Purple line is twins
Blue is a 35r on 16 psi
Green lines are both 35R, Light green is at 20 psi , and dark green is at 15 psi.
02-24-2004, 01:37 PM
#8
Senior Member
Thread Starter
Join Date: Jun 2002
Location: La Plata, Maryland
Posts: 9,725
Originally Posted by TYSON' date='Feb 24 2004, 11:35 AM
If you've already ported, then go bigger than the 35R.
GT40R or buy my GT42!
GT40R or buy my GT42!
Yes I am ported. Its an Aggro street port!
Would these others spool in the same time frame?
Sorry but honestly I am turbo stupid so please bear with me.
02-24-2004, 01:47 PM
#9
Senior Member
Join Date: Jan 2003
Location: London, Ontario
Posts: 2,871
35R is the 35/40. Whoever these guys started buying them from for RX-7's called it the 35/40 for some reason. Garrett calls it the 35R.
My 42 spools well. On stock ports on my car I could hit 3 psi in neutral by going WOT to redline. From 2000 RPM in 5th the wastegates (7lb spring) opened @ 2700 RPM. Please try that with your car if you're driving it now and let me know how it compares, I haven't seen the stock turbos tested to compare.
Maybe Badog could comment on the GT40R, I don't know if it's running yet?
My 42 spools well. On stock ports on my car I could hit 3 psi in neutral by going WOT to redline. From 2000 RPM in 5th the wastegates (7lb spring) opened @ 2700 RPM. Please try that with your car if you're driving it now and let me know how it compares, I haven't seen the stock turbos tested to compare.
Maybe Badog could comment on the GT40R, I don't know if it's running yet?