Turbo Upgrade
07-23-2011, 04:04 AM
#1
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Turbo Upgrade
Hi Guys,
I am currently running a Turbonetics 60-1 and thinking of upgrading to a Garrett GT 35.
Was wondering if this will yield better hp and what is the max psi I can push this turbo to without breaking the engine.
I have a built up bottom end. (forged piston and rods)
I am currently running a Turbonetics 60-1 and thinking of upgrading to a Garrett GT 35.
Was wondering if this will yield better hp and what is the max psi I can push this turbo to without breaking the engine.
I have a built up bottom end. (forged piston and rods)
07-23-2011, 05:21 AM
#2
Hi Guys,
I am currently running a Turbonetics 60-1 and thinking of upgrading to a Garrett GT 35.
Was wondering if this will yield better hp and what is the max psi I can push this turbo to without breaking the engine.
I have a built up bottom end. (forged piston and rods)
I am currently running a Turbonetics 60-1 and thinking of upgrading to a Garrett GT 35.
Was wondering if this will yield better hp and what is the max psi I can push this turbo to without breaking the engine.
I have a built up bottom end. (forged piston and rods)
I am sure that most will agree that the kit you have is a bad start, however,
if you really want to utilize the built block, get a true T4 turbo. I prefer the Precision line of turbos, as they have proven themselves reliable. You should also look at getting a larger down pipe (3") and a larger FMIC.
07-23-2011, 06:04 AM
#4
Turbonetics is a decent stock block kit. When I go to build my engine I am going to sell it and buy a better kit. I have had to have the 60-1 rebuilt because the seals were going bad, my wastegate pipe broke into two pieces, and the mounting tabs broke off the up pipe leaving two holes for exhaust to escape before spooling the turbo. All of those issues are very common problems with the turbonetics kits.
07-23-2011, 07:35 AM
#5
No, you can not "boost way more than that" because the turbine is too small, and will not flow enought to make a decent amoun of power (500whp) depending on dyno. I think TN uses a T3 .77 a/r turbine. What goes in (compressor side), must come out thorugh the turbine.
Last edited by Boosted Performance; 07-23-2011 at 07:36 AM.
07-23-2011, 12:58 PM
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I am sure that most will agree that the kit you have is a bad start, however,
if you really want to utilize the built block, get a true T4 turbo. I prefer the Precision line of turbos, as they have proven themselves reliable. You should also look at getting a larger down pipe (3") and a larger FMIC.
if you really want to utilize the built block, get a true T4 turbo. I prefer the Precision line of turbos, as they have proven themselves reliable. You should also look at getting a larger down pipe (3") and a larger FMIC.
Not sure how the manifolds look, but seems like those would be good enough with a T4 flange, and a bigger DP wouldn't they?
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07-23-2011, 01:49 PM
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Sorry for the newb questions, just got the car with the TN kit on it... it was the right deal at the right time, even though its not the best kit out there.
07-23-2011, 04:44 PM
#9
No, you can not "boost way more than that" because the turbine is too small, and will not flow enought to make a decent amoun of power (500whp) depending on dyno. I think TN uses a T3 .77 a/r turbine. What goes in (compressor side), must come out thorugh the turbine.
The top decent stock block kits right now are the power lab and the momentum hands down... Both using great parts, momentums kit was on display at Zdayz as well, and it is apparrent that there is no comparison between that and the turbonetics. It's all about flowing volume in and out, and the turbonetics is good to about 400ish.
07-26-2011, 10:48 AM
#12
The piping and design of the kit is restrictive.
You can put a larger turbo on as many have done and then go make 475 whp on a built motor.
Or you can be like Tuarran, upgrade the snail, redo most of the piping and still have a weaksauce fawking car.
You can put a larger turbo on as many have done and then go make 475 whp on a built motor.
Or you can be like Tuarran, upgrade the snail, redo most of the piping and still have a weaksauce fawking car.
07-26-2011, 10:56 AM
#13
^ha thats way before the join date of almost everyone in this thread
which pipes were too small on the TN?
PL, etc use like a 2.25" crossover, smaller than 3" intake, like 2.5" or smaller up-pipe. T3 flange.
All that is seems pretty small as well compared to other single turbo I6/V6 cars (GN, supra, etc)
which pipes were too small on the TN?
PL, etc use like a 2.25" crossover, smaller than 3" intake, like 2.5" or smaller up-pipe. T3 flange.
All that is seems pretty small as well compared to other single turbo I6/V6 cars (GN, supra, etc)
Last edited by str8dum1; 07-26-2011 at 10:59 AM.
07-26-2011, 12:55 PM
#14
I pmed Taurran a bunch when I was going F/I. He always talked about the the up pipe and downpipe being the main restrictions. I lucked out and bought a kit that already had those two things modified. Thats the ONLY way I would look into a TN kit with a bigger turbo. Even with those modifications mid 500hp is the max I would go. To the OP, how much power do you want. If you are just looking at upper 400s to 500hp and get the up pipe and downpipe modified for cheap then go for it. If not then I would advise against upgrading and go with a different kit.
07-26-2011, 04:12 PM
#15
TN didnt use a 3" downpipe? realistically, we need a 4" downpipe. There is no reason why our single turbo kits should be smaller piping and turbo wise than a smaller displacement supra.
Supra kits are T4/T6 flanges with 4-5" downpipes. That's why the boosted performance kit should really be #1 on ppl's single turbo lists. That or STS with an equally as large turbo.
Powerlab and momentum style kits will always have restrictions power wise due to location of the turbo. You just cant shove big enough piping in there without a custom low profile manifold.
Supra kits are T4/T6 flanges with 4-5" downpipes. That's why the boosted performance kit should really be #1 on ppl's single turbo lists. That or STS with an equally as large turbo.
Powerlab and momentum style kits will always have restrictions power wise due to location of the turbo. You just cant shove big enough piping in there without a custom low profile manifold.
Last edited by str8dum1; 07-26-2011 at 04:14 PM.
07-26-2011, 04:16 PM
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I pmed Taurran a bunch when I was going F/I. He always talked about the the up pipe and downpipe being the main restrictions. I lucked out and bought a kit that already had those two things modified. Thats the ONLY way I would look into a TN kit with a bigger turbo. Even with those modifications mid 500hp is the max I would go. To the OP, how much power do you want. If you are just looking at upper 400s to 500hp and get the up pipe and downpipe modified for cheap then go for it. If not then I would advise against upgrading and go with a different kit.
Plans so far are:
- Precision 6265.
- Tial 44mm external WG with open dump.
- Larger than 3" dia downpipe.
- Reweld any weak/cracked welds.
- 3.5" intake if I can make it fit.
- Heat wrap the charge piping.
- Turbo blanket on the turbo.
I have yet to be under the car (its my buddy's) to see the up pipe, maybe it will be painfully obvious when I get under it. We would like to push about 600whp on the race tune (< 450 street whp).