smbikes

my car is building to high of a crank case psi and it is leaking from aroung the in take bolts and any opening that it can find! I dont want to put a evach system on it becaus they are for more all out drag , dose any 1 know a car that came with a Vacuum pump that was not belt driven ??

fourfivefour

NO. But is your pcv system working? Pull out the valve and check if the screen under the valve is plugged. If it is plugged your engine is not breathing. How many miles on the motor?

smbikes

i am carbed so i dont have the screen , my motor has about 1700 miles on it

fourfivefour

Do you have a pcv valve hooked up?

smbikes

yesssss

fourfivefour

Do you have a vent so air can enter the crank case? How much pressure are you talking? If it is chugging lots of compression out the oil fill maybe you should do a leak down test. Who built the motor? Were the rings staggered properly? Were the ring end gaps checked?

smbikes

my mototr is fine , built perfeck , not trying to be rud but i just want to know what cars came with electrical
smog pump / air pumps

smbikes

the pvc is working , but hooked the the vach tree , i know that i need a new setup ,

vristang

A healthy motor will not have the extreme problem you are talking about.
Have you done a compression test and a leakdown test?
This is the only way to know if all is well with the motor.

How many miles are on it is irrelevant.


As for what cars to find vac pumps on...
I have heard that some Lightning trucks had a vac pump. I'm not sure of the details though.

There have been several GM vehicles that used a vac pump to assist the brake booster. A google search should find some applications. I have yet to find one in a j/y though.

The best option if you are serious about a vac pump however is a smog pump from a Ford van/truck.
http://www.performanceparts.ford.com...tKeyField=2739

I have tried this and the vac level provided by the pump is far too great. You will need to find a vac restrictor to run in the system.



HOWEVER...
If the motor is in good condition, you don't need a vac pump.

Can yo describe the entire pcv/evac system you are currently running?
Most likely there is something wrong with the current setup.


jason