what do you think?--turbo.
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Racer
Joined: Jan 2005
Posts: 476
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From: Tucson, AZ. L98-85 AUTO COUPE: 120k MILES: daily driver. SOUND OFF IF YOU'VE BEEN THERE. Ex-Jumpin' Junky-82nd Airborne-2/505 PIR: 1st ID-1/16th Inf: Recon Marine Retread. GOD BLESS GRUNTS.
what do you think?--turbo.
well, what do you think of this deal? will it fit on an 85 auto?
http://cgi.ebay.com/ebaymotors/Twin-...31783528QQrdZ1
will it do much good on a stock set-up, and will it last?
thanks for any responses. i've been looking for an option that will give better power on my 85 350 non-roller setup while i save more money to build a roller 383 a little at a time.
thanks, froggy.
http://cgi.ebay.com/ebaymotors/Twin-...31783528QQrdZ1
will it do much good on a stock set-up, and will it last?
thanks for any responses. i've been looking for an option that will give better power on my 85 350 non-roller setup while i save more money to build a roller 383 a little at a time.
thanks, froggy.
Last edited by parafrog; Jan 24, 2006 at 04:22 AM.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
Wouldn't jump at that one
With enough time and money, I'm sure that setup could be adapted to your vette. A LOT of time and money. Next time you're under your hood, try to imagine where not one, but two turbos and related exhaust plumbing would fit. Now imagine where the intercooler and related intake plumbing would fit. Even on a twin turbo system designed for your vette, the plumbing would be a nightmare.
Turbo systems are usually extremely reliable. That part is rarely the problem. The problems come from the engine. Unless the engine is designed to run with added compressed air, it will have a tough time surviving without some good controls on the turbo system. Even a motor built with a compressor in mind can be turned to scrap metal in a matter of minutes if things aren't just right.
I'd sure look elsewhere for a performance upgrade. I'm sure there are supercharger set ups made for your engine (and engine compartment). Even if they gave you the set up you are looking at, you'd spend an enormous amount of time and money making it fit. Even if you could make it fit, I'd question whether you could make it live.
Turbo systems are usually extremely reliable. That part is rarely the problem. The problems come from the engine. Unless the engine is designed to run with added compressed air, it will have a tough time surviving without some good controls on the turbo system. Even a motor built with a compressor in mind can be turned to scrap metal in a matter of minutes if things aren't just right.
I'd sure look elsewhere for a performance upgrade. I'm sure there are supercharger set ups made for your engine (and engine compartment). Even if they gave you the set up you are looking at, you'd spend an enormous amount of time and money making it fit. Even if you could make it fit, I'd question whether you could make it live.
Thread Starter
Racer
Joined: Jan 2005
Posts: 476
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From: Tucson, AZ. L98-85 AUTO COUPE: 120k MILES: daily driver. SOUND OFF IF YOU'VE BEEN THERE. Ex-Jumpin' Junky-82nd Airborne-2/505 PIR: 1st ID-1/16th Inf: Recon Marine Retread. GOD BLESS GRUNTS.
Originally Posted by old motorhead
With enough time and money, I'm sure that setup could be adapted to your vette. A LOT of time and money. Next time you're under your hood, try to imagine where not one, but two turbos and related exhaust plumbing would fit. Now imagine where the intercooler and related intake plumbing would fit. Even on a twin turbo system designed for your vette, the plumbing would be a nightmare.
Turbo systems are usually extremely reliable. That part is rarely the problem. The problems come from the engine. Unless the engine is designed to run with added compressed air, it will have a tough time surviving without some good controls on the turbo system. Even a motor built with a compressor in mind can be turned to scrap metal in a matter of minutes if things aren't just right.
I'd sure look elsewhere for a performance upgrade. I'm sure there are supercharger set ups made for your engine (and engine compartment). Even if they gave you the set up you are looking at, you'd spend an enormous amount of time and money making it fit. Even if you could make it fit, I'd question whether you could make it live.
Turbo systems are usually extremely reliable. That part is rarely the problem. The problems come from the engine. Unless the engine is designed to run with added compressed air, it will have a tough time surviving without some good controls on the turbo system. Even a motor built with a compressor in mind can be turned to scrap metal in a matter of minutes if things aren't just right.
I'd sure look elsewhere for a performance upgrade. I'm sure there are supercharger set ups made for your engine (and engine compartment). Even if they gave you the set up you are looking at, you'd spend an enormous amount of time and money making it fit. Even if you could make it fit, I'd question whether you could make it live.
thanks for the advice. i'm sorry if i didn't read your answer correctly, but are you saying that a supercharger is a viable option?
thanks, frog.
Racer
Joined: Oct 2005
Posts: 264
Likes: 1
From: La Grande Oregon
I sure don't have the answer to this, but check out the other sections of this web site, there are a lot people here who have/are playing with turbos. One of the things i would be worried about is the heat genarated from the turbos on your smc body pannels. As for superchargers ther are a lot of kits out there for that application, and a lot of people here playing with those as well. Must be a killer 383 if you consider $2,400 a stop gap mesure to where your going!
Old motorhead is right, you can slap anything together and make it work for a while, but if you want it to live for 50,000 miles or so, (with forced induction) you must consider pistons, rings, valves, valve springs, guides, rods, crankshaft, etc,etc. Best of luck,...joe ...
Old motorhead is right, you can slap anything together and make it work for a while, but if you want it to live for 50,000 miles or so, (with forced induction) you must consider pistons, rings, valves, valve springs, guides, rods, crankshaft, etc,etc. Best of luck,...joe ...
Melting Slicks
Joined: Feb 2005
Posts: 2,135
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From: Sebastian Florida
St. Jude Donor '06
Originally Posted by old motorhead
With enough time and money, I'm sure that setup could be adapted to your vette. A LOT of time and money. Next time you're under your hood, try to imagine where not one, but two turbos and related exhaust plumbing would fit. Now imagine where the intercooler and related intake plumbing would fit. Even on a twin turbo system designed for your vette, the plumbing would be a nightmare.
Turbo systems are usually extremely reliable. That part is rarely the problem. The problems come from the engine. Unless the engine is designed to run with added compressed air, it will have a tough time surviving without some good controls on the turbo system. Even a motor built with a compressor in mind can be turned to scrap metal in a matter of minutes if things aren't just right.
I'd sure look elsewhere for a performance upgrade. I'm sure there are supercharger set ups made for your engine (and engine compartment). Even if they gave you the set up you are looking at, you'd spend an enormous amount of time and money making it fit. Even if you could make it fit, I'd question whether you could make it live.
Turbo systems are usually extremely reliable. That part is rarely the problem. The problems come from the engine. Unless the engine is designed to run with added compressed air, it will have a tough time surviving without some good controls on the turbo system. Even a motor built with a compressor in mind can be turned to scrap metal in a matter of minutes if things aren't just right.
I'd sure look elsewhere for a performance upgrade. I'm sure there are supercharger set ups made for your engine (and engine compartment). Even if they gave you the set up you are looking at, you'd spend an enormous amount of time and money making it fit. Even if you could make it fit, I'd question whether you could make it live.
You are slightly mistaken, a supercharger will put MORE pressure on a engine than 4 turbos combined. I forget the ratio, but for every 5-6 hp gain you get from a supercharger; you take away 1.5-2hp from your engines hp. But you are right, you pretty much have to rebuild your heads or replace them to go to a TT setup , as well as beef up your bottom end to get the engine to last. To much compression will shorten your engines lifespan considerably.
Navigator
Joined: Nov 2005
Posts: 9
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From: East Troy Wisconsin
Now when I first was looking to up the power on my newly aquired Vette I looked into all aspects of power adders and for the amount of the kits, ( sometimes 6K plus ) I have decided to go with a 383 stroker kit with @ 10:1 compression and with a little luck it should make 400-500 hp and about equal torque #'s. Seems to me if I can do this for about 5 grand ( the cost of a good supercharger kit) and get it to run reliably that this is the way I'm going! just my .02
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
Randy 93?
Can't agree with your statement about superchargers putting more pressure on an engine than 4 turbos. How much boost, whether it be from a turbocharger or a supercharger, is what determines the level of "pressure" added to an engine. A system that limits boost to about 8 pounds, whether it be from a turbo or supercharger, is easily manageable if the engine is healthy and of moderate compression ratio. Much more than that and you need a specially prepped engine if you want it to live long and prosper. A pound of boost is pretty much a pound of boost no matter where it comes from. Turbos apply the boost a little more slowly and smoothly. Superchargers get the pressure up quicker. Turbos are marginally more effecient because of the drag caused by the mechanical drive of the supercharger. The turbo is along for the ride and isn't pumping much 'till you step on it. The s'charger is always pumping relative to rpm. If you want a responsive motor, the supercharger is the way to go.
Advanced
Joined: Feb 2005
Posts: 77
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From: zanesville ohio
i disagree, turbos are the way to go with the way they are made now there, is virtually no lag, and unlike the super charger they don't spin off the crank, all you need is a good set of pistons 'forged' which in the 85 corvette is stock, and a decent cr that's not high, read in any engine, car magazine they also agree turbo is the way to go there just a little more complicated to set-up. 
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Racer
Joined: Dec 2004
Posts: 427
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From: Albuquerque New Mexico
Some of you should take a peek into the f/i section more often. Turbos are quite a daunting task on our cars, though not impossible. The s/c setups are very limited and I humbly suggest (despite being a fan of ATI) going for a vortech setup if you go s/c. If you're going turbo, well good luck and I hope you're a skilled welder.
Thread Starter
Racer
Joined: Jan 2005
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From: Tucson, AZ. L98-85 AUTO COUPE: 120k MILES: daily driver. SOUND OFF IF YOU'VE BEEN THERE. Ex-Jumpin' Junky-82nd Airborne-2/505 PIR: 1st ID-1/16th Inf: Recon Marine Retread. GOD BLESS GRUNTS.
Originally Posted by mike43725
i disagree, turbos are the way to go with the way they are made now there, is virtually no lag, and unlike the super charger they don't spin off the crank, all you need is a good set of pistons 'forged' which in the 85 corvette is stock, and a decent cr that's not high, read in any engine, car magazine they also agree turbo is the way to go there just a little more complicated to set-up.
i was toying with the idea cause looking at that kit and the company's selling history, i could possibly get it for around $1800.
basically, i don't want to buy the correct performance upgrades for my 350 which wont be optimum for transfer when i start building a 383 or a 400 (there's a place in town-MM&S, which was selling 400 blocks for around a buck-fifty a couple of years ago. when i feel right i'm gonna go down and check their roller 350 and 400 blocks). also, looking at peoples numbers, it seems to me that if you're going to build a dd, emissions engine with good power for the buck, then a roller block is the best way to go. i can't afford to buy things twice, and a cheap, re-usable forced air option used conservatively seemed like a way to get some good power out of my 350 while building a better motor.
but you guys are right. i'm no welder, and installing forced air in a corvette must be a major undertaking--not a stop gap measure.
thanks for the input, froggy.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
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From: Southeast TX
Reality bites
Gloves off. I'm sure some have tried and maybe even succeeded. But I'm going to submit that you'd have to be totally nuts to turbo charge a street vette. A turbocharger is, for all intents and purposes, a "fire" under your hood. All of the exhaust plumbing from your exhaust manifolds or headers going to your turbo(s) and away from your turbo(s) constitutes more fire. Not sure of temps, but I'd guess that turbo temps would be over 500 degrees just tooling around and would surpass 1000 degrees under load. How are you going to isolate these fires in an already crowded engine compartment? Maybe in a race car, but not in a street car. I like turbos. I own over 20 turbocharged diesel engines in various pieces of machinery. Wouldn't want to be without turbos on any of them. They just don't belong in a vette engine compartment.
Advanced
Joined: Feb 2005
Posts: 77
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From: zanesville ohio
i agree turbos are very hard to get set up right and it is tight under the corvette hood. im just saying they cause less stress on an engine than the sc. anyway i like naturally aspirated engines, just easier and less expensive, if you really want some power build a 434 sb! 
Melting Slicks
Joined: Mar 1999
Posts: 2,535
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From: Rochester NY
Well, I got a built all forged internals 383LT1 Procharged D1SC custom cogged set up. Pulley were set up to 18+psi. At 4600rpm it is boosting 14,2psi on the dyno and the belt broken off. For around 600rwhp than it is ok and easy to get with the LTX cars. Above 600rwhp is harder to do, mainly the belt will breaking up or slipping on high boost with rib belt. I now switch to turbo because I want way alot more hp and never ever have to worry about another broken belt or slipping. During street tuning I have run as high as 18psi. I don't like the stock ecm and the 50s injector. I am getting DFI GEN 7 and 96s injector for the up coming Spring. I want to see how how hp the darn thing on 25psi, the turbo that move 130bls/min
Last edited by Bruce; Jan 25, 2006 at 08:12 AM.
Racer
Joined: Oct 2005
Posts: 264
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From: La Grande Oregon
Ok, like i said i don't have the answers,.....however heres a couple of things to think about,....your 350 may have forged pistons but how many miles does it have? Adding boost to any used engine isn't a good idea, you are adding pressure to the upper ring lands ( on the pistons )that have already been subjected to alot of pressure over the years...not to mention the added pressure to the piston skirts,....this piston was made for an engine not running forced induction, ...this is just one of the things you will run into.
Running an engine thats going to run a lot of boost means taking the time to use the right componets, or why waste the money? Ok, now just so you know what can be done,..... I used to run a funny car with a buddy, who ran a wheelstander corvette, he ran a blown 454 with 12.5 to 1 pistons,.....the trick?.....he ran alcohol ....and very low boost. .....O well enough rambling for now, see ya ....joe...
Running an engine thats going to run a lot of boost means taking the time to use the right componets, or why waste the money? Ok, now just so you know what can be done,..... I used to run a funny car with a buddy, who ran a wheelstander corvette, he ran a blown 454 with 12.5 to 1 pistons,.....the trick?.....he ran alcohol ....and very low boost. .....O well enough rambling for now, see ya ....joe...