Anyone know how to get positive crankcase ventilation with Weber conversion on 4.2 XK
#1
11-06-2016, 06:51 AM
Anyone know how to get positive crankcase ventilation with Weber conversion on 4.2 XK
I have a 4.2 XK in my XJ6C that seems to pressurize the crankcase, and I've noticed that the Weber DGV conversion that the car is currently running does not have positive vacuum for the breather. It was running the breather hose to the open-element air cleaners, which won't generate significant vacuum.
Has anyone found a good way to do this? I have a triple SU conversion waiting for when I rebuild the motor, which I know needs to be done soon... but it seems a daunting task and I'm putting it off.
Before anyone mentions cleaning the breather screen-- already done it.
Has anyone found a good way to do this? I have a triple SU conversion waiting for when I rebuild the motor, which I know needs to be done soon... but it seems a daunting task and I'm putting it off.
Before anyone mentions cleaning the breather screen-- already done it.
#2
11-06-2016, 03:10 PM
Veteran Member
Join Date: Jul 2010
Location: Austin tx and Daytona FL.
Posts: 7,362
Received 1,231 Likes
on
939 Posts
the best vacuum source, would be to get all the ports together for a smooth flow.
maybe drill the manifolds and hose hook them together, i use a 1/2" hose , it helps alot for putting a negative vac in the crankcase!
stops a lot oil drips, but you may need a catch can in between vacuum and case!
depending on how much blowby pressure you may have.
maybe drill the manifolds and hose hook them together, i use a 1/2" hose , it helps alot for putting a negative vac in the crankcase!
stops a lot oil drips, but you may need a catch can in between vacuum and case!
depending on how much blowby pressure you may have.