Rocker Arm Install Question--Threadlocker?
02-02-2006, 05:17 PM
#1
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Rocker Arm Install Question--Threadlocker? How are all you guys doing the reinstall of your rocker arm bolts?
GM Service manual dosent say anything about using locktite or threadlocker.
LS1how to says to use Locktite threadlocker.
Any ideas on which is better?
GM Service manual dosent say anything about using locktite or threadlocker.
LS1how to says to use Locktite threadlocker.
Any ideas on which is better?
02-02-2006, 06:34 PM
#2
If your heads are ported, there's a good chance you're intake port is all the way through. So on the intake rocker bolt THREAD you need a sealant to stop oil from coming through. On all 16 pushrods you can use a blue loctite under the WASHER but not on the thread. Make sense?
02-03-2006, 05:00 PM
#7
You can safely use loctite under the washers, not the thread of the bolt. Reread what I wrote above. For sealant, I used teflon paste. You can use permatex aviation sealer too.
This is from some posts over the summer on this:
--------------------
"Actually if you want to help keep the locktite people in business you would put thread sealant on the threads(Check and you'll see that only one bolt per cylinder needs thread sealant. I think it's the intake bolts as they are the only ones that get exposed during the CNC process) and regular locktite under the flatwasher heads of the rocker arm bolts. You'll have all your bases covered that way.
Go to the local Chevy dealer parts counter, and tell them you want the "GM Thread Sealer" that is used on the intake manifold bolts on vortec engines. It is a combination thread locker and thread sealer. It probably has a million other uses but when I changed the intake manifold last time, I went by the book and went and got some of it from the dealer. Be warned they are proud of it!"
This is from some posts over the summer on this:
--------------------
"Actually if you want to help keep the locktite people in business you would put thread sealant on the threads(Check and you'll see that only one bolt per cylinder needs thread sealant. I think it's the intake bolts as they are the only ones that get exposed during the CNC process) and regular locktite under the flatwasher heads of the rocker arm bolts. You'll have all your bases covered that way.
Go to the local Chevy dealer parts counter, and tell them you want the "GM Thread Sealer" that is used on the intake manifold bolts on vortec engines. It is a combination thread locker and thread sealer. It probably has a million other uses but when I changed the intake manifold last time, I went by the book and went and got some of it from the dealer. Be warned they are proud of it!"
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03-02-2006, 02:47 PM
#8
I tried using teflon paste when I did my heads last year and though that would be sufficient. But when I pulled off my intake to get ready to install a Fast 90, I found the intake ports of my heads had a coating of oil on them (clean for the most part, not grimey like the stockers I pulled off which I suspected was a result of the PCV). I put a catch can on the PCV system and it seems to have kept oil out of the intake so I can only assume its leaking through the rocker bolts on the intake ports.
