mid-mount turbo

[BlueZ31]

Ive been browsing this forum for some time, and its answered most of my questions without having to post or join, but now that im in id like to say thanks for letting me be a part of HybridZ!

 

Anways, ive got a NA '87 and its pretty built right now (MSD 6a, pacesetter ceramic coated headers,BeCool e-fan,turbo-radiator,stage 1 cams,jwt springs and a gutted intake), but if im gonna really see any more power itll require boost, and ive been opposed to turbos for the main reason of it meaning id have to ditch my headers (which i REALLY like) and i know that the squires remount mount turbo system has been debunked on this forum before BUT what if i was to mount a stock '85 turbo downstream? or would a smaller '87 up turbo be more beneficial? The only other form of boost i considered was a centri' style supercharger due to the ease of install/intercooling ability and itd let me keep my plenum, but their so damn expensive used ones still go for 700usd and up!

 

Local laws dont require emissions testing and im good for a whole nother year on inspection, so i figured i could mount it in place of the cat' converter, where it would be relatively safe from road debris, however ive got a few problems in this setup im hoping you all can solve:

 

1. how would i route the oil lines, and would it be able to return/recieve oil on its own or would i need some sort of pump?

 

2. What would be the best way to mount the air filter to avoid sucking up dust and water while still recieving a good amount of air? im assuming mounting it under the car would provide sufficent airflow, right? or maybe install it in some sorta side-scoop?

 

3. I know most of the whole NA to turbo requirements (a buddy of mine has a '88 he did a na-turbo using a na block and heads so he'll come in handy for the electricals and debugging) but he's running an after-market blow off valve AND fmic, should i do the same or would it run okay without any sorta bypass or bleed-off, and would aluminum intake tubing provide sufficent intake charge cooling?

 

Love to hear suggestions and criticism (constructive preferably..lol) im not entirely new to boost or the vg30e but id love to pick everyones brains on this:icon45:

[Mikey]

1 yes, you would need to run a oil pump for the turbo by itself, but i have seen some guys go without it.

 

2mount the turbo in the back section by where the muffler would go. will give you room and somewhat clean air. run a hefty filter and a heavy dirt catch cloth

 

3 blow off valves are good, keeps the wear down on the turbo but not neccesary.

on the na motor to turbo i cant help ya. i dont know enough about z's..

 

SDSturbo would be a great place to look for ideas on turbo mounting.

[BlueZ31]

well, now ive got it all added up (sorta) i can use my friends t3 volvo turbo with the internal wastegate set at 8psi (same as a stock vg30et, right) use a t-fitting at the oil pressure sender to send oil to the turbo (or isnt there a fitting somewhere on the LH side of the block for the original turbo i could use?) then route the oil back to one of the rocker covers VIA a high-temp electric oil pump (checking summit for one as i post this) and ive got a heat-shielded air filter ready with a dust sock from summit as well, the hardest part i think would be routing the intake air up to the cabin and avoiding the headers and any other hot or moving parts. Mounting the turbo in the catalytic converters space would provide ample heat shielding to the car while lowering the distance the intake and exhaust would have to travel to/from the turbo, along with lessening the strain on the oiling system too..or so im hoping..lol..STS has it directly at the back of the car in their systems, and it uses so much intake tubing and exhaust hardware it looks like a M.C Escher printing..ha! definently not for me, but i do like the idea of retaining my shiny, shiny headers and adding a bit of boost too!

 

BUT im assuming i cant just throw in a turbo ECU, injectors and 02 sensor and everything work, right? isnt there other wiring to be done (like a knock sensor, possibly different fuel pump?) or would it work? I just really need advice on wiring the correct electronics, any expert NA-turbo advice would be GREATLY appreciated!