074 head repair
 

In my other post regarding oil pressure in my ZL-1 it has been determined that my heads are also in trouble. Water can enter both heat crossover chambers on the heads..this is not good..can this be repaired? The heads will have to come off,.. but the motor is out so now would be a good time. I can feel the hole between the two chambers ..I can do this on both heads if I stick a bent wire just beyond view in the heat port..I was thinking about filling the passage up enough to cover the break using block grout/concrete..may only be the size of a golf ball when done..anyone have experience with this..Thanks


ALbert

Re: 074 head repair
 

Have any good pics of them?

Re: 074 head repair
 

These guys do excellent aluminum repair. Have a pair of 842's that were in serious trouble. Now they are working fine.

Bob

http://www.z28camaro.com/restosvcs.html#Block

Re: 074 head repair
 

[ QUOTE ]
These guys do excellent aluminum repair. Have a pair of 842's that were in serious trouble. Now they are working fine.

Bob



I know Jerry's work very well..trying to find a "home" cure if possible to save time..Thanks

ALbert

http://www.z28camaro.com/restosvcs.html#Block

[/ QUOTE ]

Re: 074 head repair
 

[ QUOTE ]
Have any good pics of them?

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no pics as they are still bolted to the block and the piercing into the water passage is on the blind side of the heat crossover curve..I can feel it buyt not see it at least from the intake runner side..maybe after I pull the heads off

ALbert

Re: 074 head repair
 

Removal of the exhaust valves may expose the problem .

Re: 074 head repair
 

I'm starting to think you should have
left the 307 in it https://www.yenko.net/ubbthreads/imag...s/rolleyes.gif

Re: 074 head repair
 

Albert,

Depending (which is a big if) on what type of damage you have, as a "home" cure option you can use a high quality epoxy like Marinetex.

I used to work at a cylinder head shop where the guys porting the heads would accidentally grind into a water jacket or breakthrough a port.

We saved a lot of heads using epoxy.It takes some practice to fill the hole and grind/smooth it down. And it can be done with good results.

As a plan B, we had a guy who could really weld aluminum like a magician.

Can you have your machinist take a look at the heads and get an idea of exactly what you are dealing with?

Elon

Re: 074 head repair
 

[ QUOTE ]
Removal of the exhaust valves may expose the problem .

[/ QUOTE ]

induction/exhaust is fine//problem is in the water jacket/heay crossover

Re: 074 head repair
 

[ QUOTE ]
I'm starting to think you should have
left the 307 in it https://www.yenko.net/ubbthreads/imag...s/rolleyes.gif

[/ QUOTE ]

NO WAY!!