MooreBoost

if your still using the metal hard lines under the intake, the big line goes to maf pipe.

the idle control valve goes to the intercooler pipe going into the intake manifold

jlturpin

I agree. That is a mess and from initial look at the photo on my phone you are pressurizing you crankcase with boost. Go to Lindsey racing website and look for their boost line routing diagrams. That should clear it up.

thingo

Sorry I am not a mechanic(and it was a while ago), but the general order was more like-

Smoking at track
Catch can - no solution
Changed rings,bearings, more smoking, dipstick popping out, oil in turbo intake
Put restrictor in - no more smoke

My initial smoking was most likely blow by(it was an old engine).Turbo was fine.

hope that helps.

blown 944

wait a minute. I just did a quick read through the first post. Did you say that the line from teh boost tube to the catch can popped off? If so that is your problem right there!! The AOS goes to teh pipe before the turbo..

Maybe I misread

MooreBoost

im confused.. lol

lart951

You are correct tha aos line comes out of the j-boot and in cars with maf from the maf pipe not the hard pipes since they are pressurize


check # 7 that's your aos hose

txhokie4life

Me too -- and I'm staring at it.

I need to pull the intake and trace the routing.

Mike

MooreBoost

you really dont need to pull the intake. take a look at larts pic. #5 and #3 is what your looking for and not #7

lart951

Yes, indeed #5 & #3, not 7

txhokie4life

Well I have the LR MAF setup with the Venturi delete. I've done some swapping and plugging
of the #3 and #5 -- with no successful change in behavior.

Trust me I don't want to pull the intake, but
I'm an engineer -- at some point I just have to go back to basics and
I need to know what I'm dealing with.

Mike

dizzyj

mike, drive it by this weekend and well take a look. can compare to mine if need be.

I believe you have had your aos line run to a catch can, but still have over pressurized the crank case to the point you have popped your dip stick, and poped the aos line off the catch can (dont know how that happens unless the catch can is restricted.

the only way I can think if to create that kind of pressure is either major blowby, or somehow your boost system is bleeding into your block.

txhokie4life

Pulled the intake -- a nice oily mess underneath.

Most things look right -- however there is a connection that is not on the LR diagram for my 86 stock with venturi delete.

So what I see is that the connection to the brake booster to the middle vacuum connection to the intake has a Y to it that also connects to the hard pipe that then has the hose that connects to the intercooler return to the Throttle Body.
This is the same line that connects to the ICV whose other side connects to the front vacuum port of the intake.
There is no Y in the LR diagrams.

There is also a line that comes out the side of the AOS that heads down along the side of the block. I haven't traced this hose yet.

Looks like there is no restrictor on the line to the turbo - and this is a LR BB turbo, so I believe it should have one.

Wonder how much more work it is to pull the turbo at this point and have the seals checked?

The picture of the pipe connections is blurry -- I'll try and snag a better one tomorrow.

M

thingo

Is there much oil in the intake pipes?

Paulyy

This is something i drew up a while ago. Something i forgot to add was the little nipple from the intake pipe (before the turbo) goes to the crank case (AOS)

txhokie4life

My connections short the idle stabilizer input to the 2nd intake port.


I tried hilight the path on this picture,

Is this correct?

Mike