where to route isc plumback hose

[suprra_girl]

so i'm ffi now and using a 1uz throttle body. On the bottom of the tb is a port and stock the isc routes back to the intake after the afm. I was thinking, well what difference does it make being before the turbo and after the turbo? Could i just route it to the tb? It would be a lot cleaner.

cliffnotes:
Do i have to route the isc back pre turbo or can i put it straight into the tb?

Thanks

 

[lintlars]

I ran mine back to the throttle body of the 1UZ TB

 

[adampecush]

run the ISC pre turbo so you are not pressurizing it under boost...thats all I can think of.

 

[suprra_girl]

running it back to the 1uz tb would be a lot cleaner and i guess i could put a valve in to stop boost naffing up the sensor somehow?

 

[thedave925]

The coolant pipe that runs behind the 7m head, close to the fire wall, its supposed to rubber hose up to the TB, then ICS, then back down to the head inlet through the intake manifold.

I got a longer rubber hose and connected the coolant hardline to the intake manifold coolant inlet

Check this out:

http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=CO&P=2

 

[suprra_girl]

ummm... yea not talking about coolant as i'm sure that would be rather inconvenient having coolant through my turbo where there's not supposed to be coolant

 

[adampecush]

It is a pain in the ass that there are all those hoses that have to be routed over the engine, isn't it. My suggestion (which I will be doing myself) is to have a look at the routing of the ISC on a 2jz-gte engine - their isc valve is in approximately the same location, so I would assume the piping would be similar.

 

[lintlars]

Ive been running mine like I stated for two years, and it has a one way valve thats stock on the 7m ISC (its the small washer with rubber that goes between the ISC and the flange) to avoid pressurizing the unit its clean and Ive had no problems

 

[staticpat]

Yeah that sounds like a much cleaner solution. It's not like you'll need the ISC when under boost anyway. There shouldn't be any harm in routing it post-turbo with a check valve.

 

[suprra_girl]

thanks for all the replies

from the sounds of it, it already has a check valve stock... the one inside... sounds good, even less work LOL

thanks ya'll