TTIX 370 power limits
06-06-2013, 11:00 AM
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TTIX 370 power limits
Guys I have done some searching and haven't really found an answer. I know this is a general question with plenty of variables but just I am just looking for a few opinions. I want to know at what power level are you having trouble with head gasket leaks. I know the tune has a major role in this but Steve Williams will be retuning the car so I know the tune will not be an issue. I have a 6.0 iron block with a stock crank, callies rods, wiseco pistons 9:1, clevite bearings, all arp hardware, 317 heads with stock vavles but hand ported by a reputable local race shop, full valve train kit with rocker arms, alky control dual nozzle running 100% M1 methanol on 93 octane. Any experiences would be appreciated. This is a street driven weekend racer. I was thinking 800whp on a dynojet with good tune and good fuel would be reasonable for longevity.
06-06-2013, 01:45 PM
#3
Melting Slicks
You didn't mention your fuel system and injector size, but I think with everything else listed you more than likely have that issue covered also. Are you running the 57mm turbos or the 62's?
On a 9:1 to engine with 370ci, meth and 93 octane, you shouldn't have much of a problem reaching 800 rw on a dynojet with the TTiX kit. Also, head gasket issues at that level shouldn't be a problem.
Make sure your tuner is conservative with the timing and air fuel ratio. Don't go chasing horsepower with additional timing. Use the boost controller to add horsepower. I would much rather see someone add 1 psi of manifold pressure instead of 1 degree of timing once everything is optimized.
On a 9:1 to engine with 370ci, meth and 93 octane, you shouldn't have much of a problem reaching 800 rw on a dynojet with the TTiX kit. Also, head gasket issues at that level shouldn't be a problem.
Make sure your tuner is conservative with the timing and air fuel ratio. Don't go chasing horsepower with additional timing. Use the boost controller to add horsepower. I would much rather see someone add 1 psi of manifold pressure instead of 1 degree of timing once everything is optimized.
06-06-2013, 02:25 PM
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You didn't mention your fuel system and injector size, but I think with everything else listed you more than likely have that issue covered also. Are you running the 57mm turbos or the 62's?
On a 9:1 to engine with 370ci, meth and 93 octane, you shouldn't have much of a problem reaching 800 rw on a dynojet with the TTiX kit. Also, head gasket issues at that level shouldn't be a problem.
Make sure your tuner is conservative with the timing and air fuel ratio. Don't go chasing horsepower with additional timing. Use the boost controller to add horsepower. I would much rather see someone add 1 psi of manifold pressure instead of 1 degree of timing once everything is optimized.
On a 9:1 to engine with 370ci, meth and 93 octane, you shouldn't have much of a problem reaching 800 rw on a dynojet with the TTiX kit. Also, head gasket issues at that level shouldn't be a problem.
Make sure your tuner is conservative with the timing and air fuel ratio. Don't go chasing horsepower with additional timing. Use the boost controller to add horsepower. I would much rather see someone add 1 psi of manifold pressure instead of 1 degree of timing once everything is optimized.
When I took the car to get tuned I didn't realize the boost controller I had was broken. On the first pull it ran 20 psi and made 910 on the dyno jet. The next pull a coupler in the torque tube ate itself so tuning stopped. Since then I rebuilt the torque tube and replaced the couplers and drive shaft. I have also replaced the boost controller. I know making big numbers on the dyno means nothing at the track. A single gear pull is not like a 1/4 mile run and can push water if not tuned properly. I guess my real question should be with everything I have and having a reputable tuner how much power can I "safely" run.
The turbos are 57 I guess. They have a stage V turbine housing and I think when I measured the compressor wheel it was 59 mm but I could be wrong. Whatever the case they are not 62s.
06-06-2013, 02:27 PM
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06-06-2013, 02:52 PM
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Melting Slicks
I think everything including the head gaskets will be fine for 800rwhp. I can't see a 255 with no BAP making that power though. With a BAP it would be at it's limits. 15psi should double the NA power of your low comp 370ci. Say 400rwhp. I'd aim for that and not give it any timing that the dyno doesn't jump for. Say you are at 13*, 15psi, and you make 800. If at 15* it only make 820 it's not worth it on pump gas. If it shoots up to 840, then you keep it there or leave some safety on the table.
I bet you could make the 800 without meth if you really wanted and had some big exhaust on there.
I bet you could make the 800 without meth if you really wanted and had some big exhaust on there.
06-06-2013, 03:05 PM
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I think everything including the head gaskets will be fine for 800rwhp. I can't see a 255 with no BAP making that power though. With a BAP it would be at it's limits. 15psi should double the NA power of your low comp 370ci. Say 400rwhp. I'd aim for that and not give it any timing that the dyno doesn't jump for. Say you are at 13*, 15psi, and you make 800. If at 15* it only make 820 it's not worth it on pump gas. If it shoots up to 840, then you keep it there or leave some safety on the table.
I bet you could make the 800 without meth if you really wanted and had some big exhaust on there.
I bet you could make the 800 without meth if you really wanted and had some big exhaust on there.
Last edited by long; 06-06-2013 at 03:06 PM. Reason: spelling
06-08-2013, 11:36 AM
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Turbo Geist congrats on running 9's. As for the fuel system my car is a late '03 Z06 so it has the C6 style fuel system. I am running the factory pump along with a walbro 255 on a hobbs switch with -8 supply to fast rails with a boost referenced regulator -6 return with 83 lb siemens injectors. By the way I am running a vacuum pump set to pull 7 inHg under full boost.
When I took the car to get tuned I didn't realize the boost controller I had was broken. On the first pull it ran 20 psi and made 910 on the dyno jet. The next pull a coupler in the torque tube ate itself so tuning stopped. Since then I rebuilt the torque tube and replaced the couplers and drive shaft. I have also replaced the boost controller. I know making big numbers on the dyno means nothing at the track. A single gear pull is not like a 1/4 mile run and can push water if not tuned properly. I guess my real question should be with everything I have and having a reputable tuner how much power can I "safely" run.
The turbos are 57 I guess. They have a stage V turbine housing and I think when I measured the compressor wheel it was 59 mm but I could be wrong. Whatever the case they are not 62s.
When I took the car to get tuned I didn't realize the boost controller I had was broken. On the first pull it ran 20 psi and made 910 on the dyno jet. The next pull a coupler in the torque tube ate itself so tuning stopped. Since then I rebuilt the torque tube and replaced the couplers and drive shaft. I have also replaced the boost controller. I know making big numbers on the dyno means nothing at the track. A single gear pull is not like a 1/4 mile run and can push water if not tuned properly. I guess my real question should be with everything I have and having a reputable tuner how much power can I "safely" run.
The turbos are 57 I guess. They have a stage V turbine housing and I think when I measured the compressor wheel it was 59 mm but I could be wrong. Whatever the case they are not 62s.
you shouldn't have a problem making 800+ rwhp with smallest turbos.
