Alright everyone, I am having some problems i have a 1994 Sc300 (not mine) and i am installing a na-t and i just wanted to confirm somethings before i strarted things. Well Basically just wondering if anyone has a diagram for the vac hose's that go from the Wastegate to the turbo and BOV how is it supposed to be set up?

the second thing is the feed line for the turbo i am not quite familiar with these engines. i am more familar with the 2jz-gte and supposivly the feedline is supposed to be picked up from the oil filter? does any one have any pix of this?
thanks
Jason

 

I don't have a diagram to my access currently but the WG just needs a boost reference, you can choose if you want it at the turbo or the manifold, or anywhere in between. There are different ideas as to differences in performance but either will get you on the road.

The BOV needs to see vacuum at closed throttle so it must be a manifold source.

I don't know how the oil pick up line works for the NA-T as I havn't studied it to much. When I did my last NA-T car (not a Lexus) we ran the line off a Tee we installed off the oil sending unit. Basically b/c it was closest to the turbo. Look around and I'm sure you can find some pics on NA-T cars.

Good luck

 

Most people drill and tap the Union Bolt or buy the pre-tapped one from the Lexus IS300.
The union bolt is the big (22mm?) bolt next to the oil filter.
It holds the whole assembly in place.
Take it out, drill it, and tap it for an NPT fitting.

 

T off the oem oil pressure sensor. Or do oil filter relocation.

 

WEll thanks so far for everyones help i got some pix finally! heres how everything is so far

 

 

 

 

as you see in the pix i made a custom horizontal beam so i could mount the intercooler. its good stuff!

still have to tackle the wideband later and oil lines!

 

it looks like the teardown and major install was done in just a few hours.

props to your skills.

looking good

 

Oh yeah i have a turbonetics Wastegate and i have two!! hoses comming out of it one on top one on the side. which one is for which?
thanks
jason

 

that car looks familiar, tell Ken to give me a shout!

 

on the wastegate, side port connects to a boost source from the turbo compressor housing.

the top port connects to the boost controller.(output)

here is a pic: http://www.mkiv.com/techarticles/bli...d/sbcid004.jpg

good reference thread:
http://www.supraforums.com/forum/sho...e&pagenumber=1

 

thanks Gazi it is kens car just fixing up some stuff for him thanks

TOday progression wasnt as high pretty cold. and missing losts of bolts had to get botls 5 times in the day! lol

 

What's your address?
Looks like I can pick up some usefull spare parts.