First off I have to apologize because I am posting from my phone and this site allows exactly one photo per post. So here is the engine bay of my turbo 308. Mason Bleasdell owed me a few favors for fixing his MR2, so credit for the pretty pictures goes to him. Aaron Image Unavailable, Please Login
288 GTO front bumper, turn signals, foglights and air dam. I bought material to fabricate a grille, but I kind of like the rawness of the fans. Image Unavailable, Please Login
I've owned this car for almost ten years. The current condition is really a dream come true. Image Unavailable, Please Login
It runs on E85. It's very convenient for me as there is a pump about a block from my shop. E85 is mostly ethanol and has a very high octane and excellent cooling properties. Because of this we actually raised compression on the engine and added a turbo on top of that. The results are amazing. 572whp (about 700 flywheel horsepower based on the drivetrain losses we have seen with other F cars). Image Unavailable, Please Login
308 stock crankshaft Carillo rods Norwood custom JE pistons 348 heads Cams worked by Bob 308 QV block Custom clutch - part center force, part Bob Norwood, part Notwood Italia 328 oil pump, can gears, exhaust manifolds and intake runners 308 QV intake plenum 70mm throttle body 630cc injectors Fuel rails by ATS/Bob Runners modded for efi by ATS Runners ported to match 348 heads Cam/crank sensors from Bob Link G4+ ecu tuned by ATS Toyota Tundra coils Turbo kit fabricated by ATS Precision 6265 billet compressor wheel turbo with .82 ar T4 exhaust Trunk mounted water to air intercooler core and reservoir.
We also did a bunch of restoration/resto-mod work. There is a custom aluminum radiator Custom ac condenser Dual SPAL fans Replaced all ac lines with R134 barrier hose New Sanden compressor New ac interior fan AC vent temps are cold. I haven't had a really hot day to try it, but on 80 degree days the vent temps get down into the high 30's.
Holy Crap. A 308 with what might be a bit too much power! That is going to be a real handful to drive anywhere close to it's potential. Did you do any suspension or brake upgrades to match the power? What a fun project !!! Would love to see and hear it running.
We also installed the Girodisc brake kit. It's better, but you still have to be careful about when you use the boost. The suspension is all new poly bushings, QA-1 coilovers, new ball joints, new steering rack and tie rods. Image Unavailable, Please Login
I want your front spolier/air dam!! I'd put a grill in it, but I love the GTO quad lights. I've contemplated buying a deep fiberglass repro and modifying it. And the power, I'd be up for a fistfull of that also! Noice!
WOW ! This looks mean and fast. Are the wheels 17" Autostrada Modena ? They look great on the car. I have a set that's going on the 400GT some time in the future. A
Simply fabulous! Before any of the purists jump in (AKA the 'originality freaks'... and BTW there is absolutely nothing wrong with being one!), it must be said that you really have to drive one of these conversions before passing judgment. If you are used to a stock 308 QV, these are surreal! That being said, as the man reminds: "...you still have to be careful about when you use the boost..." I recall many years ago one of the reviews of the original Porsche 930 being simply, "Lethal in the wrong hands". 14 pounds of boost in this application certainly could yield the same observation. All the very best and happy (and safe!) driving with this rocket! John (another Norwood turbo-QV owner)
All my original parts including my carbureted 2v engine are shelved/stored. Almost everything was a "bolt on" affair with no drilling or cutting. But I can't imagine wanting to go back to original/stock. Image Unavailable, Please Login
Friggen awesome, love boosted engines! Anything over 450Hp is pure stupid fun and plasters a grin that sticks for long while! Link G4, really the only way to go unless one has serious coin for Mclaren I really like the ease and speed of using Link. Honestly you're probably around 630-ish at the crank. I know sounds low, but there is a couple reasons why, bearing and viscous gear drag are roughly ~1% most all gearboxes in a 1:1 ratio are 98%~98.5% efficient. The 308 though is 1:1.12 in 4th so it's off that mark by about 2%. I'd roughly figure a loss of ~10%. The transaxle in the 308 does not utilize a 90* turn via a hypoid-geared diff, that's where conventional drivetrains lose ~10%. Another thing to keep in mind is the losses are frictional and thus would be converted as heat, converting the loss to heat in terms of power required to heat the gear oil and transaxle will give one a rough idea if the numbers are realistic. Oil heats up at twice the rate of water for example. 126Hp or a 22% thermal conversion would boil the oil in very short order! Oh and interesting to note, there is a right off the bat a 10% reduction in RPM from the clutch to the input shaft, the drop gears are not 1:1.
Awesome job and way to stick with it! I'd scare myself with that much power ... I want to be scared . cheers
Insane build and right on for doing what YOU want!!!! I love the front end too. I would think it would be very easy to damage that nice radiator though. Rather than making a traditional 288 grille you can do something more raw like some vintage mesh grille that is a little recessed and only covers most of the radiator. I'd paint the mesh black too - that would be mean!!! Do a search on "bumperless" in the 308 section and you can get some ideas from some threads. can't wait to see this thing go in a video!
