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Old 10-29-2013, 01:58 PM   #101
Homemade WRX
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Yeah, the mods for this section aren't of this section...so they're pretty oblivious to anything except for strictly policing.

Now I'll just sit here and wait for some points :P
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Old 10-29-2013, 03:36 PM   #102
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hahahaha ^^. well said. and hopefully no points
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Old 11-16-2013, 01:33 AM   #103
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Quote:
Originally Posted by Crystal_Imprezav View Post
Best combo is to run the Crawford AOS; then run the top line of the AOS to a Peterson CC -12 line side; then run the Peterson -8 line to a Vibrant exhaust CC vent fitting.
i decided to give this setup a go and bought the peterson cc ... ive got it now but i don;t see how connecting it this way will help. the peterson cc wont do much at all as the blowby will go in one port and out the other. it doesn;t actually pass through the filter medium.

the only way to use the peterson cc is to use it the way it was intended and that is to connect both ports to the engine and let the blowby go down the can and up through the centre where it escapes through the filter at the top. im assuming the centre of the cc has some filter medium in it.


anyway i decided to do some testing of my own and was hoping someone can give me some feedback. i bought one of these

http://aeromotiveinc.com/products-pa...ump-regulator/

i have it on the top hose of the crawford aos going into the intake. it's set on max vacuum. i have the crawford aos hooked up properly including the return etc. i didn;t install the peterson cc yet.

i have a vacuum guage connected to that aeromotive unit via a silicon hose that goes into the cabin. i was assuming i would get heaps of vacuum but running at 25psi boost i barely get any vacuum at all . like the needle on the guage just bounces around at 0 pressure.

have i connected something wrong it or have i misunderstood what the aeromotive unit does.

when i have the crawford aos hooked up i get heaps of oil in the intake. im assuming theres too much vacuum produced by the intake so i bought this aeromotive unit to try and regulate the vacuum
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Old 11-16-2013, 07:15 AM   #104
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That piece is made for an actual vacuum pump which I would assume would provide more vacuum than the intake would. But since you are there already, what turbo and size intake do you have? Have you checked the amount of vacuum with the regulator fully opened?

I would like to know how much vacuum the turbo is actually pulling. PTE has said that even though my AOS is connected to the intake it may still not provide the vacuum I need.
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Old 11-16-2013, 09:37 PM   #105
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i have the full race gt35 turbo kit. with a 5" intake and a blox velocity stack air filter.

the manual for the regulator says for max vacuum you wind the adjuster all the way in so thats what i have it at. im assuming winding it out would give me less vacuum?
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Old 11-16-2013, 09:46 PM   #106
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Ok so you have a big turbo. I'm not sure how that piece is supposed to work.
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Old 11-16-2013, 10:49 PM   #107
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That's just a valve for the pump. The pump runs 100% and you adjust the valve for the amount of vacuum you want.

I don't think its doing anything if you don't have it hooked up to a pump.

Please correct me if Im wrong.
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Old 11-17-2013, 10:47 PM   #108
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i was hoping this would solve my problem. i can;t have it hooked up and can;t have it vta? what to do ?? hahah
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Old 11-20-2013, 02:45 AM   #109
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Quote:
Originally Posted by Blue_Diamond View Post
i was hoping this would solve my problem. i can;t have it hooked up and can;t have it vta? what to do ?? hahah

https://www.mann-hummel.com/fileadmi...nt_en_2013.pdf
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Old 12-10-2013, 01:37 PM   #110
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So I had my car on the dyno with my Crawford AOS open to atmosphere. No hose attached at the top. I've tried with hoses attached and the car was smoking a lot so I wanted to try without it. At idle and cruise the car ran fine, no smoke. Into high RPM and boost smoke out of exhaust and out of AOS. Typically if rings are going wouldn't I see constant smoke no matter what RPM i was at? I think this may be causing my high crank case pressures which leads to my turbo not being able to drain properly.

The pressure my car is currently tuned to is 24 PSI on a 6466 with Cosworth pistons.

I still think my turbo is just leaking either ways, Precision is keeping to their guns and saying it is my crank case pressure.

I also changed my plugs and they were clean.
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Old 12-10-2013, 01:48 PM   #111
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If crankcase pressure were enough to stop oil from flowing through the passages (drain) and galleries, you'd have huge problems. Likely a non functioning engine. By the sounds of it, you may have excessive blow-by. Time for a compression and leak-down test. OR, you're oil pump (or oil restrictor) is too big and you're pushing oil past the turbo seals.
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Old 12-10-2013, 01:57 PM   #112
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Quote:
Originally Posted by KillerBMotorsport View Post
If crankcase pressure were enough to stop oil from flowing through the passages (drain) and galleries, you'd have huge problems. Likely a non functioning engine. By the sounds of it, you may have excessive blow-by. Time for a compression and leak-down test. OR, you're oil pump (or oil restrictor) is too big and you're pushing oil past the turbo seals.
I have the 12mm pump. Once oil heats up idle cruise my pressure is 80 psi. I was wondering if I should get a restrictor but the turbo already has internal restrictors.

I'm looking to do a leak down and comp this week hopefully. I did one a few months ago and it was perfect and I was still losing oil. But might as well check again.
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Old 12-10-2013, 04:09 PM   #113
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you have 80psi at idle. That is WAAAYYY too much. What is it cold?
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Old 12-10-2013, 04:17 PM   #114
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also you need to pull your downpipe and look in it if it is wet with oil regardless of what PTE says oil is leaking into the turbine side past the center section seals.
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Old 12-10-2013, 04:41 PM   #115
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^ likely because of too much oil pressure. Seen this many times before
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Old 12-10-2013, 04:47 PM   #116
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Yikes sorry. 80 psi on cruise by 200*. Idle is about 26 psi. My bad.

Last edited by jockeygolfs; 12-10-2013 at 05:07 PM.
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Old 12-10-2013, 04:50 PM   #117
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I have pics I'll post. Down pipe is blacker than black. Headers are clean. There is a black flared area of wet oil around the turbine housing.
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Old 12-10-2013, 05:08 PM   #118
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Im not sure how your motor is built but it sounds like you may have too much oil pump. What the pressure at redline?
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Old 12-10-2013, 05:20 PM   #119
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OK so oil is coming out of the turbo. Is this a new setup? Rotated? Pics? Is the drain straight and not kinked? Is the correct oil restrictor in place at the turbo? Cold oil pressure at idle and hot oil pressure at 6K RPMs?

Between all the Suby dorks on here, we should be able to sort this out.
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Old 12-10-2013, 05:23 PM   #120
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It stayed at about 80+
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Old 12-10-2013, 05:25 PM   #121
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Quote:
Originally Posted by KillerBMotorsport View Post
OK so oil is coming out of the turbo. Is this a new setup? Rotated? Pics? Is the drain straight and not kinked? Is the correct oil restrictor in place at the turbo? Cold oil pressure at idle and hot oil pressure at 6K RPMs?

Between all the Suby dorks on here, we should be able to sort this out.
Thanks man. I appreciate all the help. When I get to my computer I will post as much as I can to paint a complete picture.
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Old 12-10-2013, 05:43 PM   #122
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Quote:
Originally Posted by jockeygolfs View Post
It stayed at about 80+
I see as much if not more pressure at 6K than this. My oil pressure is in the 90's at redline. 2700-3400 at idle lower end when hot higher at warm temps.

I'm getting some blow by past the Crawford after a bunch of high boost driving. I see it in the IC, it's not bad. I replaced and re-routed my drain hose so that helped and may have been part of the problem. I also noticed that my turbo drain line hose needs to be replaced which I'll do but this does not have anything to do with the oil in my intake. After we do compression and leak downs and if all is ok, I'm thinking of installing a Perrin AOS upstream of my Crawford, then modding the Crawford and use it as the second stage of the AOS having coolant running through both. BTW, my XTI is running strong on e85 and 29psi. It entertained the Motovicity guys last week when we were all at Angels shop!

Last edited by manitou; 12-10-2013 at 08:39 PM.
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Old 12-10-2013, 06:27 PM   #123
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Delete....I didn't see next page.
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Old 12-10-2013, 08:01 PM   #124
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ETS Rotated Turbo System w/ 6466 PTE BB Turbo, 12mm OEM oil pump, Cosworth 99.5 pistons, 27k miles. I do not ave the little filter on my AOS anymore:



Turbo Oil Drain:


Drain at block, pretty straight shot without kinks etc:


Headers at the flange where all runners come together right before the uppipe. Note how clean it is and how you can see bare metal:


Headers:


Head:


Turbo compressor housing w/ oil:


Spark Plugs Pulled two weeks ago. They have about 8k miles on them:



I do not have an oil restrictor prior to the turbo. Apparently the turbo already has a restrictor. According to Precision's instructions, a BB turbo does not need a restrictor.

Cold start up oil pressure is 100 psi. Once it reaches 200* it drops to 80 psi while cruising, 26 psi at idle. I'm currently using T5 Rotella. I have gone back and forth with T6 Rotella.

Symptoms: Burns oil, especially when running hard in boost. On dyno the AOS will puff smoke after it begins to hit high RPMs/boost. No smoke coming out of the AOS during slow cruise or idle on dyno. No smoke out of the oil filler cap at idle.

The following are the ways I have changed my setup to see if the oil burning would stop:

1) Plumb crank case to aos, aos to intake, heads directly to intake. This was to see if having both the heads and crank case to the aos was limiting the vacuum of the crank case and therefore causing turbo leakage. Noticable amount of oil in head line. Noticable amount of oil on the compresor housing. After seeing advice on this thread I removed the head to intake direct connection.

2) Standard Crawford AOS connection. Heads and crank to aos, aos to intake. Noticed oil pooling on turbo compressor housing. Still loosing oil.

3) Crank case and heads to aos, aos to atmosphere. No connections to intake. Still loosing oil.

All scenarios the amount of oil lost is relative since it varies depending on how I drive. Note the how clean my headers and spark plugs are. I do not have a picture of my down pipe but believe me, it is black.

Nerds..............SOLVE!!!!!! lol
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Old 12-10-2013, 08:15 PM   #125
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Quote:
Originally Posted by Crystal_Imprezav View Post
I used a moroso check valve breifly but when it is hooked up to a Pertson, you don't need a check valve bc any BP that may happen will vent through the Peterson filter.

If you use a check valve and your exhaust builds BP and the valve closes, you could have serious issues since your CC will essentially be capped (if using a one can system).
Any pictures of this setup?
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