Best Turbo Set Up for Pump Gas and Alky?
Aug 7, 2005, 04:34 PM
#1
Best Turbo Set Up for Pump Gas and Alky?
I would like to upgrade my stock turbo for a turbo that would provide the best overall performance on the street/strip (mid to low 11s or faster). i will be using pump gas (91oct) and methanol all of the time. i want a set up that would be the best combination of racing from a standstill to racing from 40mph or so rolls. here are my choices so far:
1) Buschur 20g
2) gt35r
3) 2.3L gt35r
is the gt35r worth it for just pump and alky, say 26 or so psi? whats the most boost i could run on a 35r with or without the 2.3 on pump and alky?
one last thing, i live at an area that is almost 7000ft above sea level. ive heard both negative and positive things about the 35r at this level, not sure what the truth is. would the stock turbo spool slower here than at sea level? mine starts at 3100rpm and peaks at 3800rpm in 3rd gear, how does this compare to sea level?
I would appreciate any helpful information.
1) Buschur 20g
2) gt35r
3) 2.3L gt35r
is the gt35r worth it for just pump and alky, say 26 or so psi? whats the most boost i could run on a 35r with or without the 2.3 on pump and alky?
one last thing, i live at an area that is almost 7000ft above sea level. ive heard both negative and positive things about the 35r at this level, not sure what the truth is. would the stock turbo spool slower here than at sea level? mine starts at 3100rpm and peaks at 3800rpm in 3rd gear, how does this compare to sea level?
I would appreciate any helpful information.
Last edited by TwStDeVo; Aug 7, 2005 at 04:37 PM.
Aug 7, 2005, 06:44 PM
#4
If "all" you are looking for is mid to low 11's, i would not go with a 35r. Many peeps have done 11's with the tme turbo, and i believe given more time the w/r turbo will show good results as well, and if you wanted even more top end you would prob. want a gt30 turbo....my favorites are the 3076 or the fp3065.
Trending Topics
Aug 8, 2005, 06:47 AM
#9
Originally Posted by TwStDeVo
...one last thing, i live at an area that is almost 7000ft above sea level. ive heard both negative and positive things about the 35r at this level, not sure what the truth is. would the stock turbo spool slower here than at sea level?
Why?
The engine is less volumetrically efficient at that altitude, which means that it is moving less air per revolution. The characteristics of the turbo are static, so the effect is the same as reducing engine displacement while the turbo remains unchanged, which should be expected to delay spool time.
Aug 8, 2005, 02:07 PM
#14
Evolved Member
Join Date: May 2004
Location: Colorado
Posts: 705
Likes: 0
Received 0 Likes
on
0 Posts
I've dyno'd my car with a 2.3L stroker and HKS3240 turbo in Denver (5800 ft absl) and Philly. The turbo spools about 15% to 20% quicker in Philly vs. Denver. Keep this in mind if you plan on running at altitude. Also, low 11's at your altitude is going to be very difficult to achieve. I ran a best of about 11.4 @124 in Denver on C16. Another thing to consider is the fact that a turbo will not make as much boost up here as it does at sea level. I was only able to get 29 psi out of my 3240 in Denver but was able to hit 34 psi at sea level.
At your altitude I'd recommend the GT30. If you're going to occasionaly run C16 I might consider the GT35. A 2.3L stroker at altitude is a huge help but adds considerable cost to your project. Good luck with your decision.
I'll see if I still have my old dyno charts (altitude vs. sea level) and I'll post them for you
At your altitude I'd recommend the GT30. If you're going to occasionaly run C16 I might consider the GT35. A 2.3L stroker at altitude is a huge help but adds considerable cost to your project. Good luck with your decision.
I'll see if I still have my old dyno charts (altitude vs. sea level) and I'll post them for you
Aug 8, 2005, 05:21 PM
#15
Originally Posted by 3240
I've dyno'd my car with a 2.3L stroker and HKS3240 turbo in Denver (5800 ft absl) and Philly. The turbo spools about 15% to 20% quicker in Philly vs. Denver. Keep this in mind if you plan on running at altitude. Also, low 11's at your altitude is going to be very difficult to achieve. I ran a best of about 11.4 @124 in Denver on C16. Another thing to consider is the fact that a turbo will not make as much boost up here as it does at sea level. I was only able to get 29 psi out of my 3240 in Denver but was able to hit 34 psi at sea level.
At your altitude I'd recommend the GT30. If you're going to occasionaly run C16 I might consider the GT35. A 2.3L stroker at altitude is a huge help but adds considerable cost to your project. Good luck with your decision.
I'll see if I still have my old dyno charts (altitude vs. sea level) and I'll post them for you
At your altitude I'd recommend the GT30. If you're going to occasionaly run C16 I might consider the GT35. A 2.3L stroker at altitude is a huge help but adds considerable cost to your project. Good luck with your decision.
I'll see if I still have my old dyno charts (altitude vs. sea level) and I'll post them for you
i figure the next best choice over the 35r, like many tuners are saying, is the stock turbo or something similar, which is why i am interested in seing how that buschur 20g turns out. your set up seems very nice, what do you think it would have made (power wise) if you tuned it on 91oct and methanol? is a 2.3 better than a built 2.0 at this altitude? btw, cant wait to see how the new set up turns out!