im wonting to turbo charge my iron duke but i know how crappy the motar is so im wondering what all im gonna need to upgrade to make this possible and reliable,what do you all suggest?

------------------
MY COUPE!!!!!

[This message has been edited by 2m4dude (edited 04-26-2010).]

Swap in a better motor, that's the only way. You'll just be wasting time and money otherwise. The duke is good for mileage and day to day driving, not any sort of racing.

Dude seriously.... Get a better engine... OOHHH, BTW.. look at my sig... Ill send you a few pics later to your cell...

------------------
SMTHGT.....
Aka. "SmoothGT"
1987 GT 4.9L~V8~4T60E

ya i know the motars are junk for racing i dont plan on racing it really just wont to make one of the best, STRONGEST dukes out there, What would be the easiest motar to drop in and keep my 5 spd?

Remembering that the cylinder walls on a Duke are very thin to begin with, I wouldn't want to increase combustion pressure. Unless you're talking about a very low pressure boost system, I'd strike this whole idea from mind ASAP.

Maybe if you found a SD4 block that had its internals removed, but, aside from that remote possibility...

quote 2m4dude:... really just wont to make one of the best, STRONGEST dukes out there, What would be the easiest motar to drop in and keep my 5 spd?

u r asking 2 ?s. The last one has been asked 30+ x's b4 w/o the 5 spd . The answer 2 both can be found using search, located above.

UHH, you do know how to use the "Search" function??

30+mpg, have you tried to search for "motar"? That is why, sometimes, it's simply not worth the effort to point out the search function to some dudes

yes i can use the serch function im not slow but i just dont like it personally for some questions id prefer comments from ppl who do the kinda work day 2 day so i guess my best way to go is get a quad 4 and start from there

In my humble opinion lose the Duke. Swap in a 3x00 motor run a 7730 and you can keep the Isuzu I have a 3100 88 coupe I drove daily until I was rear ended

Start collecting SD4 parts, like block, crank, head, intake, exhaust, just to start with. You can pick out all the other goodies as you go. If you turbo you should be able to whip up on stock V8s pretty easily.

------------------

85 GT 3.4
14.9 @ 90 1.9 60' Old TH125/3.06
Unknown New 4T60/3.42

If you are dead set on the Duke, get ahold of a guy by the name of Neil Kline. He's the only guy that I know that ever suceeded in building a performance Duke that held together.
I can't recall his forum name right now but if you search the posts about the four, I'm sure that you will be able to locate him.
Its been a while since I saw his Fiero but it was cammed and used SBC pistons and maybe different rods. Neil also had a collection of SD4 parts but did not use them on his build.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, 3.4" Pulley, N* TB, LS1 MAF, Flotech Exhaust Autolite 104's Custom CAI 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

If you really want to make a stronger duke, start with a 91-92 VIN R duke (as used in Chevy Lumina, etc.). They're rated at 110 HP out of the box. Then do some port matching, etc. Maybe you can get up to 130 HP out of it.

quote Originally posted by TopNotch: If you really want to make a stronger duke, start with a 91-92 VIN R duke (as used in Chevy Lumina, etc.). They're rated at 110 HP out of the box. Then do some port matching, etc. Maybe you can get up to 130 HP out of it.

But with special engine mounts I think?

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, 3.4" Pulley, N* TB, LS1 MAF, Flotech Exhaust Autolite 104's Custom CAI 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

Yep the duke is not really worth doing anything besides driving.

[This message has been edited by Curlrup (edited 04-26-2010).]

quote Originally posted by Dennis LaGrua: If you are dead set on the Duke, get ahold of a guy by the name of Neil Kline. He's the only guy that I know that ever suceeded in building a performance Duke that held together. I can't recall his forum name right now but if you search the posts about the four, I'm sure that you will be able to locate him. Its been a while since I saw his Fiero but it was cammed and used SBC pistons and maybe different rods. Neil also had a collection of SD4 parts but did not use them on his build.

ya i'd like to get ahold of this guy i'd really love to have a performance duke,I did a serch and couldnt find anything on it,I plan on getting a fastback in the future for racing and everything id just like to keep my 2m4 with the duke but a mean little duke lol

I dont see it happning dude. The only dukes that i have ever seen that are trueley race engines are the SD4's and they will cost you more than a fiero's worth for the block. They way i see it is if your car is running fine right now than just drive it. Your talking about turboing a motor that was never built for preformance in the 1st place and ios older than you are. and you dont turbo charge a sports car to drive it slow dude. I would just leave it alone and enjoy what you have.

quote Originally posted by 2m4dude: ya i'd like to get ahold of this guy i'd really love to have a performance duke,I did a serch and couldnt find anything on it,I plan on getting a fastback in the future for racing and everything id just like to keep my 2m4 with the duke but a mean little duke lol

Neils forum name is The_Stickman2 He doesn't post all that often but his email is listed in his profile. Just don't et your hopes up to high. If you are looking to make similar 2.8L power you might get close but that engine is hard pressed to make gobs of power and stay together and for bolting in the SD4, its not that cost effective.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, 3.4" Pulley, N* TB, LS1 MAF, Flotech Exhaust Autolite 104's Custom CAI 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

Last year at the dells show wasn't there a supercharged duke? Or something weird like that? I remember the car, but I never saw the engine bay.

There was a turbo kit put out by IRM a long while back that brought the duke up to 6 cyl. power (about 130 hp), but it was really, really expensive. The brochure I saw I believe listed the stage 1 kit at about 3 grand. I'm sure one could reproduce it for a lot less. It was only running about 5 psi.

The weak part of a duke is the lower end. If you have an 88, it has a better balanced crank (possibly 87 as well?) which will help in the long run with a higher performance duke. What kills a duke is high revs. It's not designed to rev high. If you can keep the revs down, and still get more power, then you will be alright.

I've seen several posts on here where people burn through their pistons while trying to make a high performance duke, so keep your fuel mixture in mind when modding. Don't let it get too lean.

so whats my best bet here i wanna swap the motar,so whats the easiest set up i can do here?

Easiest would be converting it to a turbo 3.4pr. There is minimal modification to the block, you need to re drill the starter hole on the other side. The 3.4 fits into the stock 2.8 locations and can use the fiero heads and intake, or a truleo intake for better flow with the turbo or NA.

do a search on "swap" If you use "motar" you won't get anything. You need to specify "motor"

a better search would be "engine swap".

the easiest swap is likely the 4.9 caddy engine, but, like was posted above, a newer Duke from a Lumina is the easiest swap for you if you don't want to get into the higher gas usage club. Hope this helps

Arn

a 4.9 would be freakin awsome but i thought there was some huge modification that need to be done mostly what im worried about is the wiring and mounting up,im not wonting to do a bunch of fabricating to get it in there what does the price range run around for doing somthing like this