Winning from a roll.......20g vs GT35R
Originally Posted by RREvo
For the GT35R car is that a limit with alky only 25psi ?
Keith
The limits are not 25 psi on alky but with a stock shortblock and a car you truly want to drive without having problems I'd say it's the safe limit in my recomendation.
The video from MD we did here at the shop before the dyno building was done. I WISH I had gotten a discount for doing it!! I already bought and paid for the dyno and then they asked if I'd do it. It's good publicity for us. Probably a 100,000 people have seen that already between SEMA and PRI. I am trying to get a copy to run at the shop.
There are good things coming to Vegas as far as EVO, WRX tuning goes. Going to be a new shop/dyno in town very soon. Monthly tuning get togethers for you guys. Look for it!
David Buschur
www.buschurracing.com
The video from MD we did here at the shop before the dyno building was done. I WISH I had gotten a discount for doing it!! I already bought and paid for the dyno and then they asked if I'd do it. It's good publicity for us. Probably a 100,000 people have seen that already between SEMA and PRI. I am trying to get a copy to run at the shop.
There are good things coming to Vegas as far as EVO, WRX tuning goes. Going to be a new shop/dyno in town very soon. Monthly tuning get togethers for you guys. Look for it!
David Buschur
www.buschurracing.com
Originally Posted by davidbuschur
The limits are not 25 psi on alky but with a stock shortblock and a car you truly want to drive without having problems I'd say it's the safe limit in my recomendation.
The video from MD we did here at the shop before the dyno building was done. I WISH I had gotten a discount for doing it!! I already bought and paid for the dyno and then they asked if I'd do it. It's good publicity for us. Probably a 100,000 people have seen that already between SEMA and PRI. I am trying to get a copy to run at the shop.
There are good things coming to Vegas as far as EVO, WRX tuning goes. Going to be a new shop/dyno in town very soon. Monthly tuning get togethers for you guys. Look for it!
David Buschur
www.buschurracing.com
The video from MD we did here at the shop before the dyno building was done. I WISH I had gotten a discount for doing it!! I already bought and paid for the dyno and then they asked if I'd do it. It's good publicity for us. Probably a 100,000 people have seen that already between SEMA and PRI. I am trying to get a copy to run at the shop.
There are good things coming to Vegas as far as EVO, WRX tuning goes. Going to be a new shop/dyno in town very soon. Monthly tuning get togethers for you guys. Look for it!
David Buschur
www.buschurracing.com
Hi David I am installing a GT35R on my car with all supporting modes and I was looking at your piston / rod upgrade and have a couple of questions
1. Do I need too upgrade the spring and retainers to rev past 8000RPM ?
2. What Clutch would you recommend for street use with such power I am not a 6000RPM Clutch dropping guy the car will be used for street normal use with occasionally 2nd gear pull ( on a closed course ) .
QUOTED:
"I am installing a GT35R on my car with all supporting modes and I was looking at your piston / rod upgrade and have a couple of questions
1. Do I need too upgrade the spring and retainers to rev past 8000RPM ?
**Yes.
2. What Clutch would you recommend for street use with such power I am not a 6000RPM Clutch dropping guy the car will be used for street normal use with occasionally 2nd gear pull ( on a closed course ) ."
The Dual Disc Exedy HD will work well.
David Buschur
www.buschurracing.com
"I am installing a GT35R on my car with all supporting modes and I was looking at your piston / rod upgrade and have a couple of questions
1. Do I need too upgrade the spring and retainers to rev past 8000RPM ?
**Yes.
2. What Clutch would you recommend for street use with such power I am not a 6000RPM Clutch dropping guy the car will be used for street normal use with occasionally 2nd gear pull ( on a closed course ) ."
The Dual Disc Exedy HD will work well.
David Buschur
www.buschurracing.com
Iam not trying to be funny or anything but what clutch would you recommend for people with back problems. I cant do distance driving with heavy clutches for it will give me lower back pain. 
I recently registered and would like to hear it from the pros.
I recently registered and would like to hear it from the pros.
Evolving Member
Joined: Aug 2003
Posts: 349
Likes: 0
Originally Posted by davidbuschur
My mind was running wild this weekend about the 20G, stock turbo, GT35r's etc.
I was thinking about a car that came in and made some good power, around 450 whp. I left about the same time the customer did in his car, with my car making around 330 whp. We rolled out of town and both hit the gas at the same time, I left him. We didn't run more than maybe 3rd gear and into 4th for an instant. I figured he didn't try. Few days later I hear from him and he says, "Dude, that car of yours is insane, what kind of power did it make?!" I told him and he just didn't understand it. Granted had the race been longer it would have been another story.
Anyway, I start thinking that I saw something in the dyno that would measure "time" on a dyno pull. Then I got to thinking about how many times I have been asked what turbo would win from a roll on the street.
This morning I came in and started doing some comparisons. What I found was extremely interesting.
I cannot lay the runs over top of each other by time, I wish I could as I'd love to show this. You guys will have to settle for the raw numbers.
My RS with the 20g-9 on made 331 whp and it ran from 3,000 rpm to 7,000 rpm on the dyno, on pump gas in 3.77 seconds.
A customers car with Stage 4, sheetmetal intake manifold, pump gas+alky, steady 25 psi of boost to redline and a GT35R made 365.2 whp and ran from 3,000 rpm to 7,000 rpm in 5.91 seconds.
Wow, that is a pretty substantial difference. 2.14 seconds faster from 3,000 rpm to 7,000 rpm in 3rd gear. No need to tell you which car would have won this race from a roll, atleast in 3rd gear. That explains the other race. The lag is a killer from down low.
Granted if you put both these cars into a lower gear so the GT35R would be at a higher starting RPM it could change everything. I just found this interesting.
.
Enjoy.
David Buschur
www.buschurracing.com
I was thinking about a car that came in and made some good power, around 450 whp. I left about the same time the customer did in his car, with my car making around 330 whp. We rolled out of town and both hit the gas at the same time, I left him. We didn't run more than maybe 3rd gear and into 4th for an instant. I figured he didn't try. Few days later I hear from him and he says, "Dude, that car of yours is insane, what kind of power did it make?!" I told him and he just didn't understand it. Granted had the race been longer it would have been another story.
Anyway, I start thinking that I saw something in the dyno that would measure "time" on a dyno pull. Then I got to thinking about how many times I have been asked what turbo would win from a roll on the street.
This morning I came in and started doing some comparisons. What I found was extremely interesting.
I cannot lay the runs over top of each other by time, I wish I could as I'd love to show this. You guys will have to settle for the raw numbers.
My RS with the 20g-9 on made 331 whp and it ran from 3,000 rpm to 7,000 rpm on the dyno, on pump gas in 3.77 seconds.
A customers car with Stage 4, sheetmetal intake manifold, pump gas+alky, steady 25 psi of boost to redline and a GT35R made 365.2 whp and ran from 3,000 rpm to 7,000 rpm in 5.91 seconds.
Wow, that is a pretty substantial difference. 2.14 seconds faster from 3,000 rpm to 7,000 rpm in 3rd gear. No need to tell you which car would have won this race from a roll, atleast in 3rd gear. That explains the other race. The lag is a killer from down low.
Granted if you put both these cars into a lower gear so the GT35R would be at a higher starting RPM it could change everything. I just found this interesting.
.
Enjoy.
David Buschur
www.buschurracing.com
Originally Posted by davidbuschur
O.K. Here we go. More information, as requested. Now that I did what you guys want, do what I want, call and order something
BR Stage 4, Stock head, stock shortblock, HKS 272 cams, 94 octane + alky, AEM EMS, stock 9.8 EVO turbo, manifold and 02 housing.
3,000 rpm (32 mph) to 7,000 rpm (75 mph) in 4.54 seconds.
Keiths' GT35R equipped pump gas/alky car from above, ran from 5500 rpm to 7,000 rpm, does it in 1.45 seconds
My RS from above, ran from 5500 rpm to 7,000 rpm, does it in 1.65 seconds. SO the GT35R does win the race once it is spooled up and in its sweet spot. That's no surprise as I said. For me it's the waiting for the sweet spot just driving around that I don't like
David Buschur
www.buschurracing.com
BR Stage 4, Stock head, stock shortblock, HKS 272 cams, 94 octane + alky, AEM EMS, stock 9.8 EVO turbo, manifold and 02 housing.
3,000 rpm (32 mph) to 7,000 rpm (75 mph) in 4.54 seconds.
Keiths' GT35R equipped pump gas/alky car from above, ran from 5500 rpm to 7,000 rpm, does it in 1.45 seconds
My RS from above, ran from 5500 rpm to 7,000 rpm, does it in 1.65 seconds. SO the GT35R does win the race once it is spooled up and in its sweet spot. That's no surprise as I said. For me it's the waiting for the sweet spot just driving around that I don't like
David Buschur
www.buschurracing.com
Beats me
Keith
Last edited by Fourdoor; Dec 8, 2005 at 01:17 PM.
Originally Posted by Jasil
brake boost...not boost brake...Hold the brake and pressing the gas at the same time to create boost and then letting off the brake when roll racing.
Originally Posted by IE Evo
If the driver with the 35r knows how to boost brake it will destroy a 20g or stockish turbo from a roll. I had to learn this technique racing the likes of LS1s and pullied Cobras from a roll. Never had a problem staying with them early and pullin at the top of 3rd and killing them in 4th. The cars in question had 400whp+ and more tq than any stock turboished Evo.
