Don't flame me, i'm not a FI guy, and H-T doesn't make searching for this topic easy.

Can anyone point me in the direction of some information on mounting a turbo behind the motor, say, between a conventional header and the cat? I know I've seen a thread or two about it, but I can't find them now. Thanks.

 

why would you want to do that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by toolowsol &raquo;</TD></TR><TR><TD CLASS="quote">why would you want to do that</TD></TR></TABLE>

 

lol wtf? why not just mount the turbo where everyone else does. its cheaper and easier.

 

I had never planned on going FI, so I bought a huge-*** radiator and header. I was just curious if I could slap on a turbo without replacing those. Clearance is tight in CRXes.

I figure there are good reasons not to, but I was hoping to find a discussion of those reasons so I could decide for myself.

 

you can't use that header in a turbo setup...

 

wow, i wasn't thinking that far behind the motor, but thanks mrspeaker.


Modified by steronz at 7:05 PM 8/24/2004

 

turbo with a header

 

you could use part of the header and have a flange welded on and use an internally gated turbo. one of my friends runs the stock header with a saab turbo like that on their civic. a regular manifold is obviously ideal.

 

bump, still looking for more links.

 

You would need to spend a lot of money modifying your exhaust and header to get it to fit, and then your charge pipes would be a lot longer then they have to be and it would be slow to build boost and everything else, basically it is a really stupid idea, Just sell the header and put the money towards a turbo manifold

 

Mounting it would be easy, the hard part would be getting the oil return right. You'd probably have to sump it. And as for charge piping, you could run water-air and a heat exchanger in the wheelwell or something.

 

Oil return wouldn't be that hard, as long as it's near the underside of the intake manifold, the oil return could come in to the upper rear part of the oil pan....

 

You will not get enough ground clearance behind the motor for a street car. On top of that, prepare to spend a grip creating a sump system for the oil drain, as well as a high temp fluid pump to get the oil back into the pan. It would, without a doubt, be significantly cheaper to sell the header and radiator, buy a conventional turbo header and radiator, and do a conventional turbo setup.

 

alright, i have done 2 turbos behind the cat...becasue anything behind the cat is street and smog legal...

anyways on a toyota pickup we put the turbo right behind the transmission, and celica is was up close to the fuel tank(not the smartest place but all we could find)

ok the low down

when runing a turbo that far back there is no point for an intercooler becasue the turbo stays tremdiously cooler hence a cooler intake charge
2nd on oiling the beast, you need to find yourself some good electronic oil pumps one to feed and one to return run a -4an feed and on the return i used -4an also, and when wiring make sure to have it so when the ignition is set to the on position its running the pumps, if you dont you will cook the turbo instantally, but before you start just let the pumps prime up for 2-3secs

we ran a gt35 on the toyota and stock fuel at 7psi and she rails, the celica pushed 14psi on a gt28rs and we went to 440 injectors and got a nice 11.2:1 air fuel ratio on it

if you have any questions feel free to ask me via aim: boostmastermkiii

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r &raquo;</TD></TR><TR><TD CLASS="quote">Oil return wouldn't be that hard, as long as it's near the underside of the intake manifold, the oil return could come in to the upper rear part of the oil pan....</TD></TR></TABLE>

You would run the exhaust around, under the engine, back up the rear of the engine, into the turbo, then back down again? I wouldn't want that much heat near my brake lines but maybe that's just me And how would you change your oil filter?

 

there are bolt on turbo kits that i have seen for Fbodys and trucks of differant sorts, that mount the turbo in the rear of the vehicle where the muffler would be. i believe these are all self contained turbos to help ease installation and head ache