Best Streetable Turbo?
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Joined: Jun 2002
Posts: 9,725
From: La Plata, Maryland
Originally Posted by 94touring' date='Aug 1 2003, 08:03 PM
Aren't these gt35/40 guys hitting 15psi by 3500 rpms? Just like jspecracer said, expect about a 500rpm difference.
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Joined: Jan 2003
Posts: 2,871
From: London, Ontario
Originally Posted by jspecracer7' date='Jul 28 2003, 11:58 PM
Well, the t-04R is a streetable turbo as well. Cheaper to repair if things go wrong. Good top end power(since Dave exhaust ported his car). And proly easier to find too.
I like the quick spool up of the GT35/40, but that might have something to do with the small exhaust flange(T3) and it being ball bearing.
I like the quick spool up of the GT35/40, but that might have something to do with the small exhaust flange(T3) and it being ball bearing.
The smaller housing and ball bearing do help the spool, but the GT series impellers are also redesigned aerodynamically for better performance.
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Joined: May 2002
Posts: 4,928
From: Okinawa, Japan
Originally Posted by TYSON' date='Aug 2 2003, 01:08 PM
[quote name='jspecracer7' date='Jul 28 2003, 11:58 PM'] Well, the t-04R is a streetable turbo as well. Cheaper to repair if things go wrong. Good top end power(since Dave exhaust ported his car). And proly easier to find too.
I like the quick spool up of the GT35/40, but that might have something to do with the small exhaust flange(T3) and it being ball bearing.
I like the quick spool up of the GT35/40, but that might have something to do with the small exhaust flange(T3) and it being ball bearing.
The smaller housing and ball bearing do help the spool, but the GT series impellers are also redesigned aerodynamically for better performance. [/quote]
I meant cheaper as in rebuilding is yourself. rebuild kit cost $100~ to rebuild a Garrett standard shaft turbo. But I was under the assumption that rebuilds of a ball bearing turbo were virtually non-existent since they cost as much as a new turbo. Am I correct?
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Joined: Dec 2001
Posts: 993
From: Panama City Beach, Florida
Ok, i've never been in a car with a T04R, but i would expect it to be around the same as my T-78. My T-78 has a GT79 wheel so it reaches full boost about 800-1000rpm earlier.. so i see boost at about 3800rpm.
My friend has a GT35/40, it generates boost around 3000rpm and reaches full boost at about 3600rpm. Its more gradual.. The T78 on the other hand is like someone kicks the back of the car.. very violent, but predictable if you know your car and the sounds/tach what not..
If you are planning on doing a lot of street driving, autocross, track events.. but not concentrating on drag.. get the GT35/40 Its a good all around turbo, but won't make the highend power that the t04r or t78 will. They start to fall off up top.. They will still make good power.. probably up to the 500-550hp range if i'm not mistaken.
As for rebuild cost i don't know...
Here is a picture of my friend's GT35/40 setup.. its when he was doing his intercooler...
My friend has a GT35/40, it generates boost around 3000rpm and reaches full boost at about 3600rpm. Its more gradual.. The T78 on the other hand is like someone kicks the back of the car.. very violent, but predictable if you know your car and the sounds/tach what not..
If you are planning on doing a lot of street driving, autocross, track events.. but not concentrating on drag.. get the GT35/40 Its a good all around turbo, but won't make the highend power that the t04r or t78 will. They start to fall off up top.. They will still make good power.. probably up to the 500-550hp range if i'm not mistaken.
As for rebuild cost i don't know...
Here is a picture of my friend's GT35/40 setup.. its when he was doing his intercooler...
