Vacuum system replacement
#1
Vacuum system replacement
Currently rebuilding a v12 HE with UK emissions kit. now onto the vacuum part of the rebuild and simplify if possible.
Current vacuum scheme as follows:
Connection from fuel pressure regulators to end of intake manifolds
Connection from vacuum advance to port underneath manifold butterfly (should there be a delay valve inline?)
Connection from full throttle switch to end of intake manifold
Connection to ECU from rear balance pipe.
Can I get away without fitting the startup vacuum solenoids? Also should a vacuum dump valve be fitted with the vacuum advance?
Bought the engine with all the bits but the vacuum hoses had been attacked by animals, have found a few diagrams online but they all seem to be slightly different.
Any comments or ideas on my intended setup would be appreciated.
Current vacuum scheme as follows:
Connection from fuel pressure regulators to end of intake manifolds
Connection from vacuum advance to port underneath manifold butterfly (should there be a delay valve inline?)
Connection from full throttle switch to end of intake manifold
Connection to ECU from rear balance pipe.
Can I get away without fitting the startup vacuum solenoids? Also should a vacuum dump valve be fitted with the vacuum advance?
Bought the engine with all the bits but the vacuum hoses had been attacked by animals, have found a few diagrams online but they all seem to be slightly different.
Any comments or ideas on my intended setup would be appreciated.
#3
Current vacuum scheme as follows:
I am assuming this is a pre facelift V12 HE:
Connection from fuel pressure regulators to end of intake manifolds Correct
Connection from vacuum advance to port underneath manifold butterfly (should there be a delay valve inline?) perfect
Connection from full throttle switch to end of intake manifold essential
Connection to ECU from rear balance pipe.essential
Can I get away without fitting the startup vacuum solenoids? What do you mean by startup vacuum solenoids?
Also should a vacuum dump valve be fitted with the vacuum advance? Not needed with the setup you describe above
I am assuming this is a pre facelift V12 HE:
Connection from fuel pressure regulators to end of intake manifolds Correct
Connection from vacuum advance to port underneath manifold butterfly (should there be a delay valve inline?) perfect
Connection from full throttle switch to end of intake manifold essential
Connection to ECU from rear balance pipe.essential
Can I get away without fitting the startup vacuum solenoids? What do you mean by startup vacuum solenoids?
Also should a vacuum dump valve be fitted with the vacuum advance? Not needed with the setup you describe above
Greg
The following 2 users liked this post by Greg in France:
Grant Francis (06-24-2017),
surv1984 (06-23-2017)