navymitch12

iTrader: (1)

https://ls1tech.com/forums/new-products-showcase/754802-crankcase-e-vac-pump-harness.html

discuss

what does everyone think about this, i have heard that the stock AIR PUMP would not have enough steam to do anything for crankcase pressure. Will this work? What does everyone think...worth the money?

JAvenger007

iTrader: (9)

shoot, I just trashed my air pump a couple weeks ago.
In any case, im subscribing

its seems like a lot of people are managing just fine with using either the inlet of the SC/turbo or routing to the intake. Personally, I have yet to have problem with using the intake for vac on the crankcase.

JMBLOWNWS6

iTrader: (17)

Other have have tried and if Im not mistaken it didnt work. I think MM did it.

navymitch12

iTrader: (1)

^^^^

yea thats what i thought i remembered but was not sure...figured lets see what people think

navymitch12

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no one else has anything about this?

navymitch12

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here is a little more info

http://www.turbobuick.com/forums/new...ght=racetronix

so what does everyone think still...he is getting 4-5" of vac with an lt1 pump.

so i know that the ls1 has a slightly bigger crank case but what does everyone think?

throw a line on the pump, run a Y to both valve covers and then run a breather on the oil filler. I would think the breather on the oil filler neck would kill a little bit of the crank case vac but help out a lot when the AIR pump was not on. Is anyone following me at all here? I really want to try this out but for 50$ plus shipping to hawaii i just cant afford it right now with the motor build going down.

navymitch12

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man...really no one has anything to say about this?

xssive

iTrader: (123)

They are using the air pump off of a recent express van / sonoma. Madman even sells it as a kit. You can get them off ebay for 75$

navymitch12

iTrader: (1)

that turbo buick site says LT1 pump

xssive

iTrader: (123)

http://www.thunderracing.com/catalog...vid=3&pcid=317

And it uses this pump:

http://cgi.ebay.com/ebaymotors/Brand...spagenameZWDVW

navymitch12

iTrader: (1)

yea that kit does use that pump...but the wireharness i posted is for use with ls/lt smog pump....in the buick forums they used an lt1 style air pump and got 4-5" of vac...apperently.

i know i can spend severl hundred $$$ and make a good evac system but if i can spend 50$ just on that wire harness i would like to do it.

i already have both my valve covers going to a vented catch can i would just run this pump inline with those and keep everything normal.

navymitch12

iTrader: (1)

this is the pump is supports now

http://cgi.ebay.com/ebaymotors/ws/eB...m=150144963875

with the 2 wire harness for the LS1 pump comming soon

MIGHTYMOUSE

iTrader: (59)

ya thought it was funny when i saw this product surface.. here is my post from feb 03
sorry the pics no longer work

https://ls1tech.com/forums/generation-iii-external-engine/51663-how-hook-up-stock-air-pump-evac-system.html

over the course of a couple months the motor took a dump from oil contamination. a noticeable improvement in anything at all was NOT found during the use. i strongly reccomend a catch can be used to keep the pump alive.

also anything other than high throttle positions it gets very annoying to listen to.

also keep in mind to have a back up plan if the pump stops working.. some other way for pressure to be set free.

Boostaholic

iTrader: (4)

I've been using the oem vac pump for a long time on crankcase, have it on the other side of my catch can.

navymitch12

iTrader: (1)

thanks for responding mighty i was waiting for you cause i had heard you had done this b4...now let me pick your brain

do you think i would get better results if i ran a breather on my oil filler neck and the pump at the valve covers...or is that just worthless cause i am still only gonna see 0 vac at the crankcase and it will be that same as the vented setup i am running now.

do you think this is better then a true vented system?

is it worth the money/effort?

MIGHTYMOUSE

iTrader: (59)

if you go by the notion that 'some' draw off of the engine is better than none... then this would satisfy you.

for me it was worth the money cuz it was free to try

also if you pull off of one valvecover, you should vent off the other. if not you would just pull air from one end of the valvecover to the other only.

MIGHTYMOUSE

iTrader: (59)

i found and uploaded a short lil video for you from september 2002

http://www.youtube.com/watch?v=v_ChdA_AjL0

JAvenger007

iTrader: (9)

That thing is LOUD Like a dust buster crawled up under the hood.

Looks like its pretty effective though. Im just using the intake for vacuum under normal cruising and the inlet of the turbo during boost. One check valve opens during vacuum, the other opens under boost to pull from both covers. Total cost was $50 (2 CVs and a catch can)

navymitch12

iTrader: (1)

thank you mighty!

i would only have it turn on during boost so i would not notice it to much i think

JA i thought about that but then i got to run a line all the way back and i already got like 4 of those so thats no good....i will prob stick to the breather setup i have going now....

might have to try this tho

Josh@MASPORT

iTrader: (3)

would this plan be the best?

running the pump for normal driving, instead of a check valve system

and then having a catch can connect to a port on the turbo intake for WOT

keeping both systems seperated