Has anyone done it? How much boost can it handle?

 

Not done by any of the regulars here.
Allready been quite a few posts asking about quads and Turbos.

Your problem is going to be aranging for a presure oil feed to the turbo.

It would be easier if your talking about a 4 stroke quad but then you didnt bother to mention any specifics.

 

I'm doing a turbo Banshee right now. not all quads are the same.

 

by quad 4 i think he means the older grand am and cavalier motor......

 

I love when people are specific when they ask questions.

 

I should have been more specific . I want to turbo a quad 4 engine from an older gm and put in a fiero . How much boost can the stock internals take I would like to run around 10-12 on the street , it is not a big deal if I have to beef it up a little.Thanks

 

well, you may want to change a few things before you try turboing one of those motors. they had about a 20% head gasket failure rate in NA form, i can't see them lasting too well under boost.
i know ACE engineering turbo'ed one that put down 325hp. the thing that blows on mid engined cars is the lack of decent intercooling. i have an 86SE fiero and a 91 turbo MR2 and neither really has any good options for intercooling save something like an air to water or water injection.

www.fiero.nl is your friend.
http://www.fiero.nl/forum/Forum2/HTML/040182.html (400HP turbo quad4 buildup).

i'm assuming you already know everything that's involved with swapping that engine into your fiero?

 

I have the gist of what needs to happen with the engine swap ,if you have any websites I am sure they would be helpful

 

look at the sunfire on the main page i think it has what youre looking for

 

I have a sunfire with one of the quad 4's in it and those motors are WEAK!!! They won't take much boost for very long. Personally I wouldn't go any higher than 7psi without beefing up the bottom end. Almost a guarantee you'll throw a number 3 rod bearing!! But if you want more info for them goto www.j-body.org, just watch out for all the winers. Oh yeah you might as well just do a huge search there cause asking questions usually just gets a flame contest started. There is some good info if you can weed through the bullshit...