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speedy266
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Posted: Wed Jun 25, 2003 10:31 pm |
TOC Member |
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Joined: Wed Jun 25, 2003 10:23 pm Posts: 350 Images: 18 Location: Ontario, Canada
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Hey i was at a car show near me, and i saw 2 1987 Buick Grand Nationals amazing cars, 3.8 litre Turbo charged, rear wheel drive. Amazing blows my away, i really wanna try to get that turbo for my 3.8 in the 85 ciera, one of the owners said all i need is the manifold, throttle body, fuel lines and i could hook it up. But i dunno since mines front wheel drive, the headers sit up front might be kinda hard to hook up a turbo, any ideas? suggestions? is it possible?
_________________ 1985 Oldsmobile Cutlass Ciera
3.8L (231) V6 MPFI
AC Delco Rapidfire Spark Plugs
Accel Brute Thunder HEI Super Coil
Accel Ignition Module
MSD Rotor
Hypertech 180F Thermostat
Mister Transmission Fluid Cooler
Cool Collar Oil Filter Cooler
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strokercutlass
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Posted: Wed Jun 25, 2003 11:20 pm |
TOC Mechanic |
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Joined: Mon Jun 09, 2003 12:17 am Posts: 378 Images: 13 Location: Wis
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speedy, your engine and the one in the grand national..are completely different...the FWD and RWD engines are designed differently, and parts wont interchange with each other....
_________________ Shawn's Auto Repair and Performance, SW Wis.
www.shawnsautorepair.procarcarezone.com
69 Olds Cutlass S
70 Olds Vista Cruiser Wagon
72 Olds Cutlass S, 12:1 470 stroker, JM40 solid lifter cam, TH400, 3500 10" PTC stall, 4.11 posi
74 442 455/TH350
79 Cutlass 455/TH375 sleeper
'97 GMC Sierra Ext Cab 9" lift w/ 37's
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DKnight
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Posted: Thu Nov 13, 2003 3:09 pm |
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Joined: Mon Nov 10, 2003 12:10 am Posts: 63 Location: Huntington, WV
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There has to be some way to rig up a turbo for our cars. As long as we kept the boost at about 6 lbs or less, and had our trannies in good shape, we'd be fine. Of course, the piston rings and overall engine condition would have to be good.
I'm thinking 250hp and 300lb/ft of torque would send some ricers running in fear. Shoot, on 6 pounds of boost, my car would be running sub 7 second 0-60. Remember, turbos don't sap power from the engine to run like superchargers. All the boost you get is cream. Therefore, if you're making 180hp, and you get 50% more power (a common increase), you'd be at 270 hp. More likely would be 230 or so hp, but hey, I'd take it!
The 3.8 is notoriously efficient for forced induction use. Also, this wouldn't hurt our gas mileage as a supercharger would.
DK
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Psyco Diver 69
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Posted: Thu Nov 13, 2003 9:17 pm |
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Joined: Sun Sep 21, 2003 1:20 am Posts: 207 Images: 8 Location: South NJ
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GN motors share the same block, bore, and stroke, thats about it. You car is fuel injected right? If it is then you good, first you need a turbo, go to a junkyard and find a turbo in good condition. Second your going to need new exhaust manifolds made, but I do believe you can work with what you have but your going to have to connect the turbo at where both sides of the exhaust manifolds meet. The after that you have to fab up ducting to get the turbo connected to your intake. I would only run 5 or 6psi max, maybe 8 or 9 psi if you get a intercooler. You will also have to run good gas, good spark plugs with lots of gap and good wires. I don't think you'll see 250 hp you will get a good power boost from it
After you blow up your motor for the first time (High milage motor, to much boost, to hot of a day, low octance, ect.) I would get a GN crank and have it redrill for a FWD tranny, get forged rods, and a low compression (8:1, 8.5:1 max) forged pistons, bigger injectors and have someone totally reprogram your computer.
For more help, talk to the guys at www.turbobuick.com they know everything about boosting buick V6s
_________________ Jake 19/m
1972 Olds 442 - 350/th350/3.73 posi - Project "C6 Killa"
1985 Olds Cutlass Supreme - 231/th200c/2.41 peg leg - winter beater
1972 Olds Cutlass- Parts car
www.cardomain.com/id/psycodiver69
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DKnight
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Posted: Thu Nov 13, 2003 9:53 pm |
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Joined: Mon Nov 10, 2003 12:10 am Posts: 63 Location: Huntington, WV
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Well, to be honest, if I were to get serious about turbocharging a vehicle, I'd make sure the motor was in great shape. I'd probably overhaul the thing. Compression is only 9:1 in the Series I, as I understand it. The guys at firebirdv6.com run 7lbs of boost all day on their Series II 9.6:1 motors. I always run premium gas anyway, so that wouldn't be a problem. I probably wouldn't go over 5 or 6 pounds. One thing that would make a huge difference, though, would be a custom cam or higher rocker ratios. Running them with forced induction and free flow exhaust, you'd have a torque monster. Then, you'd just have to worry about keeping the thing under control. With the high gearing of most Delta 88s, that extra torque would mean a lot.
DK
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86Delta
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Posted: Thu Nov 13, 2003 10:16 pm |
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Joined: Thu Nov 06, 2003 10:47 pm Posts: 281 Images: 22 Location: NJ, USA
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here's my idea for turbo'ing.
get an L67 engine and trans, because the 3.8 or 3800 engine may survive with low boost, but the 4T60 transmission does not hold up well to increased power or abuse. the L67 is already set up with lower compression pistons and stronger internal parts, so that simplifies things a bit. take off the supercharger and sell it, get a naturally aspirated series 2 intake and bolt that on. then figure out what has to be done as far as exhaust manifolds, waste gate, and intake ducting. since the L67 computer is already programmed to work with boost, it should either work as is or need minimal modifications with a power programmer. the 4T65e trans is much stronger and there are aftermarket shift kits and also posi traction differentials available for them.
just my $.02
_________________ http://members.cardomain.com/86delta
"When they kick at your front door, how you gonna come, with your hands on your head, or on the trigger of your gun?" The Clash
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