I know my SC options but I am very intrigued by the rear turbo systems I have been reading about. I like turbo more than SC but the rear systems look like it would have lag issues, but the manufactuers say they don't. Both a SC or RTC system look to be around the same price range. Thoughts? Concerns? Snide Remarks?
I know my SC options but I am very intrigued by the rear turbo systems I have been reading about. I like turbo more than SC but the rear systems look like it would have lag issues, but the manufactuers say they don't. Both a SC or RTC system look to be around the same price range. Thoughts? Concerns? Snide Remarks?
I saw one installed on a Firebird. It had tuning issues, not lag issues, that's why it was at Woodbridge Dyno. This sytem was designed for pickup trucks and adapted to Fbodies. You need the space a solid axle car has to fit it up out of the way. A benefit of the system is the long pipe to the intake acts as an intercooler, so none of that stuff needs to be added underhood. It makes for a really stealth installation. The company that made it is in Montana.
I don't know if they have adapted them to our Corvettes.
I saw one installed on a Firebird. It had tuning issues, not lag issues, that's why it was at Woodbridge Dyno. This sytem was designed for pickup trucks and adapted to Fbodies. You need the space a solid axle car has to fit it up out of the way. A benefit of the system is the long pipe to the intake acts as an intercooler, so none of that stuff needs to be added underhood. It makes for a really stealth installation. The company that made it is in Montana.
I don't know if they have adapted them to our Corvettes.
I went to the STS website and saw a c5 twinturbo kit, i was going to call them and see if they are working on a c4 kit...
I went to the STS website and saw a c5 twinturbo kit, i was going to call them and see if they are working on a c4 kit...
Too bad it's not available for the C4. That would be really cool to open the clamshell and let everyone scratch their azz wondering what's up. Then blow them away leaving.
Location: Charlotte NC, behind someone going 10 under the speed limit
Quote:
Originally Posted by C4CBF
86 L98
I know my SC options but I am very intrigued by the rear turbo systems I have been reading about. I like turbo more than SC but the rear systems look like it would have lag issues, but the manufactuers say they don't. Both a SC or RTC system look to be around the same price range. Thoughts? Concerns? Snide Remarks?
Chevy High performance had a writeup on a Z28 system, and they were very vague about the added performance. they stated they had tuning issues then they got it right back to where it was? WTF? I couldn't tell if they were continuing it till next month or what. Since the heat differential(air volume and velocity drops the farther away from the engine it gets as it cools) helps drive a turbo system I'd want it close to the engine If I were to blow a couple grand on it, get some real gains. Sleeper cars have their place, but it's already a Vette so.....
Last edited by DarkBlue88; 02-25-2006 at 11:21 PM.
Chevy High performance had a writeup on a Z28 system, and they were very vague about the added performance. they stated they had tuning issues then they got it right back to where it was? WTF? I couldn't tell if they were continuing it till next month or what. Since the heat differential(air volume and velocity drops the farther away from the engine it gets as it cools) helps drive a turbo system I'd want it close to the engine If I were to blow a couple grand on it, get some real gains. Sleeper cars have their place, but it's already a Vette so.....
Yeah I have that issue and I agree it was very vague, not a huge fan of that mag since I had a subscription and they stopped sending me issues that I paid for!
C4CBF, First of I want to say thats a cool avatar! I love that movie!
And now for the car talk. SC vs RTC is a big choice. First things I'd consider is CAN you do the RTC. There is no kit so you would have to do the pipe building, welding, fabricating yourself. If you have the skills and the extra cash I would say go for it, oh and if you don't need the spare tire.
However, if you are just looking for something to bolt on and have it all work like it should, then I would go with a supercharger.
When I started my turbo project I knew I was in for a big task, but three years, a few engines, and many many dollars the kit is almost complete and up and running. Blazing a trail is not always fun. If I had to do it over again, I think I would have probably done the supercharger and had the car all finished up a long time ago.
well. I had both, D1SC on a 383LT1 and now I got a big turbo rear mount. Which one do I like better? Honestly?? I like turbo. It is difficult to plumb all the pipings. BUT when it all done and have good tune. It is fun to drive and I love the hard turbo hit.
Example my D1SC setup with 2.9 pulley it is boosting 9psi @ 3100rpm and 14.2psi @ 4600rpm the car pull very strong and rush of power.
Now with the turbo and because I got such a large turbo I got some lag and rear mount. BUT when the turbo hit at 3500rpm and 4500rpm it can boosting 18psi or more depending on how much boost I want to run. Turbo make full boost sooner and harder as to supercharger more like linear to rpm and as climb. Just my 02 cent.
Anyone who says they lag, hasn't ridden in one. Anyone who says they are slow, hasn't been lined up with one. Those kit's make awesome power on the LS1 F-bodies. My 92 vette ran 11.70's at 121 or so and got waxxed by a stock 99 SS with an STS kit on it. With 8 PSI and methanol he was making ~510 RWHP.
The biggest thing is to get the right turbo. The rear mount turbos are not standard, off the shelf turbos. The exhaust side is at the very least, a smaller AR than 'normal' turbos and I wouldn't be surprised if the wheel were different as well. Maybe consider buying just the turbo from STS, and then fabbing the rest of the kit.
If you wanna just bolt and go, the SC is definitely the way to go.
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1991 Coupe - 6 Speed - Black on black - 11.37 @ 122.88 -
Corvette Store
SC vs. Rear Mounted Turbo?
