Harley Davidson Forums banner
1 - 9 of 9 Posts

·
Registered
Joined
·
5 Posts
Trying to find out why I keep blowing the front and back intake manifold gaskets. Any help/suggestions?

Trying to find out why I keep blowing the front and back intake manifold gaskets. Any help/suggestions?

sorry I thought I had deleted the first post.
 

·
I {Heart} Hookers.
Joined
·
31,321 Posts
OEM? Never saw a set "blow"..... Unless youre having a back firing issue. Lube with silicone cream. Install. Good for 7-10 years. Unless its a 2006 xl which had a one year only intake gasket with issues.
 

·
Registered
Joined
·
341 Posts
(overtightening)they don't like me to post this, but`
try take the carb off
haVE A PARTNER hold the intake level
butter-lube (lightly) the "o" rings with RTV
tighten the clamps, but don't overtighten.
let it dry overnight
reinstall carb.
any excess thatt balls up will go out the exhaust.
i did this in '75 on a FXE and never had a intake problem again
 

·
Just Ride
Joined
·
3,847 Posts
Trying to figuire out why you posted this more than once.
 

·
Retired citizen
Joined
·
24,357 Posts
Install dry or with a light coat of silicone spray, clean the intake manifold and flanges with steel wool, install and square up to the heads.
 

·
Wayward Son
Joined
·
23,865 Posts
(overtightening)they don't like me to post this, but`
try take the carb off
haVE A PARTNER hold the intake level
butter-lube (lightly) the "o" rings with RTV
tighten the clamps, but don't overtighten.
let it dry overnight
reinstall carb.
any excess thatt balls up will go out the exhaust.
i did this in '75 on a FXE and never had a intake problem again
You hope.
 

·
Registered
Joined
·
5 Posts
Discussion Starter · #7 ·
thanks for the insight. Dave63, yes OEM, and yes some backfire. its been one year since we put new re-man motor in, also has highway cam in it.
 

·
I {Heart} Hookers.
Joined
·
31,321 Posts
thanks for the insight. Dave63, yes OEM, and yes some backfire. its been one year since we put new re-man motor in, also has highway cam in it.
You need to cure intake backfiring. This will happen no matter how good the gaskets are.
Carbed bike or efi?
 
1 - 9 of 9 Posts
Top