Head Freeze Plug Leak V8
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Head Freeze Plug Leak V8
- Thread starter Rollbar
- Start date Start date:
- Last post Last post:
Rollbar
Active Jeeper
CJim7
Crazy Sr. Respected Jeeper
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- '84 CJ7 - 430hp 401 on propane - T18a/D300 twinsticked, Superior axles, Lockers, full boatsides, Warn 8274, OBA, 36" TSL's.
That would drive me crazy and I would end up pulling the head to replace the plug 
I dont normally advocate this...but you might try some radiator stopleak. Only other thing to do would be to replace the plug.
Haven't seen those expansion plugs before...
I dont normally advocate this...but you might try some radiator stopleak. Only other thing to do would be to replace the plug.
Haven't seen those expansion plugs before...
CJ007
Old Time Jeeper
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- 83' CJ7-35's, granny T18, clocked, locked, 456s, D30 20 trussed- stitched-heim traction-1 piece shafts, CV dshaft, quick discos, xtended shock mounts, SOA, revolvers rear, braided lines, herculined, hand throttle, AMC saddle bags, rebuilt 258, D300.
X2-Pull it. If thats leaking its probably time to look at anyway or it won't be long before you are forced to and may have more issues.
Rollbar
Active Jeeper
Yep, letting it get real hot (just had the exhaust done and it had been sitting for years) and then I'm gonna look closer at it tomorrow. The hole in the fire wall looks promising. 
Rollbar
Active Jeeper
Update:
Just shut it off after idling for 45min or more.
195* T-Stat.
Idling temp 200*
Shut down temp increased to 220* and that was the max, now falling.
Freeze plug is barley damp and I am letting it sit under pressure and no results of anything major.
I'm gonna see what happens tomorrow after it sits over night.
Just shut it off after idling for 45min or more.
195* T-Stat.
Idling temp 200*
Shut down temp increased to 220* and that was the max, now falling.
Freeze plug is barley damp and I am letting it sit under pressure and no results of anything major.
I'm gonna see what happens tomorrow after it sits over night.
When I freshened up the 360 in my CJ5 I replaced all of mine. Im not real keen on the idea of putting a hole in the firewall. When I did mine I was told just pop them out with a screwdriver.
First one I hit went inside the block. It took days and more patience than you could imagine to get it back out. Figures the leaker would have to be on the back side of the head. In the end I think pulling the head may end up saving you some frustration.
Stinks that something like this bites you in the arse after getting her up and running after all that time. On the positive it does sound pretty good.
First one I hit went inside the block. It took days and more patience than you could imagine to get it back out. Figures the leaker would have to be on the back side of the head. In the end I think pulling the head may end up saving you some frustration.
Stinks that something like this bites you in the arse after getting her up and running after all that time. On the positive it does sound pretty good.
Rollbar
Active Jeeper
Ya I know, right. I had so much trouble sealing the intake bolt (draining, refilling) then got everything right, now this.
Oh well, I'll check it tomorrow and go from there.
I did remember I installed a block heater (used RTV as well) and it is basically the same plug principal. Just thinking out loud.
We will see
Pete, I did notice a lot of smoke from the right bank (duel exhaust/no crossover) and said to my self, self, ut-oh, might as well pull the motor. But then I started thinking, NEW EXHAUST pipe/oil on pipe. I let it idle and finally it all burnt off and the sound got a little quieter.
Oh well, I'll check it tomorrow and go from there.
I did remember I installed a block heater (used RTV as well) and it is basically the same plug principal. Just thinking out loud.
We will see
Pete, I did notice a lot of smoke from the right bank (duel exhaust/no crossover) and said to my self, self, ut-oh, might as well pull the motor. But then I started thinking, NEW EXHAUST pipe/oil on pipe. I let it idle and finally it all burnt off and the sound got a little quieter.