Interesting thought / idea about the block deck

[MDCmotorsports]

So I was contemplating the other day.

If you were to have a metal to metal epoxy, something oh say like jb weld...

And it was made to handle high temps oh say like cyl head temps...

And if your block wasn't quite smooth and had some pitting in it....

You could fill the pitted areas, sand smooth and install head gasket.

Surely this wouldn't be for a HP car, but what about the automotive quick fix world?

Yes no, maybe so? Discuss.

Oh, and its not on the market yet - I own the idea. Just look at the time stamp.

:biglaugh:

 

[thedave925]

You'd still have to lap the deck for a flat surface, after such a repair. Check this out about epoxies: you can't have air pockets in epoxy at locations prone to heat. So if the epoxy could be anaerobic, it wouldn't matter.

I learned about air pockets through my review mirror on my van. I had air pockets in the mating surface between the mirror mount and window. This supposed 2200 psi epoxy could take the beating of some means subs, but not the heat from the sun. It lasted 2 days.

 

[starscream5000]

He's talking about JB weld or a similar deal though. That stuff should be tougher than what your thinking of right?

I suppose it would work. What temps are jb weld good too? Does anyone make a high temp equivilant of JBweld?

 

[Nick M]

So I was contemplating the other day.

If you were to have a metal to metal epoxy, something oh say like jb weld...

And it was made to handle high temps oh say like cyl head temps...

And if your block wasn't quite smooth and had some pitting in it....

You could fill the pitted areas, sand smooth and install head gasket.

Surely this wouldn't be for a HP car, but what about the automotive quick fix world?

Yes no, maybe so? Discuss.

Oh, and its not on the market yet - I own the idea. Just look at the time stamp.

:biglaugh:

See Fel-Pro MLS Permatorque

 

[Insidious Surmiser]

i actually already did this but w/ epoxy... i'm not claiming the idea, just saying, i had a jdm motor w/ pits on the block deck... after all, i'm on the "keep it running till i'm out of college" motor, not aiming for any high hp #'s

 

[Shytheed Dumas]

What temperature would the material reach during normal heat cycles?

 

[tissimo]

copper spray?

if its that bad nothing will seal

 

[lagged]

if youre going to go through all that trouble, and since youll be sanding the block deck youll still have to have the motor out of the car and disassembled, you might as well just drop it off at the machine shop to get cut.

any machine shop with MODERN equipment can get a very good finish.

 

[starscream5000]

^ hehe, emphasis on modern... I wish there were machine shops around where I live that have that stuff...:icon_cry:

 

[Insidious Surmiser]

if youre going to go through all that trouble, and since youll be sanding the block deck youll still have to have the motor out of the car and disassembled, you might as well just drop it off at the machine shop to get cut.

any machine shop with MODERN equipment can get a very good finish.

when you're 17, in high school, getting paid 6.25 an hour... all of that little stuff adds up, you gotta cut corners in order to make ends meet

 

[suprarich]

This has already been talked about in another thread. I have used loctite 620 with great results many years ago to fix pitting.

 

[MDCmotorsports]

Im talking about a quick fix fill and sand high temp epoxy for an auto shop on the local moms mini van that doesn't want to have the engine pulled and wait 4 months worth of labor for a complete rebuild.

 

[suprarich]

Exactly, loctite 620, spread it accross the pitting, add the headgasket and bolt it down. Done! You can also use a titanium caulking and sand that. It is used to repair scratches in hyd. cylinders. I used loctite 620 as the headgasket only on a Nitromethane motor repeatedly and never blew the seal.

 

[JustAnotherVictim]

I thought the new scions just had a spray and not an actual gasket.

 

[NashMan]

yes jb weld will work if that is the qestion you are asking and will work for year's to come

but you have to buyt eh good jb weld

 

[spoolint78]

yes jb weld works
We did it on my brothers mk3.
The block had a big pit in it from trying to scrap the stock gasket off.
We just used jb weld and let it dry, then sanded it.
It held 400rwhp all day.

 

[aljordan]

I say it depends on where the pitting is. If it's on a fire ring.. no way that'll work with combustion temperatures. If the pitting is near a cooling jacket, then put a dab of high temp permatex on hte pitting, slap a gasket on it, and bolt the head down. Obvoulsy... you can't complain about a BHG if you go with the cheap repair.

 

[drjonez]

yikes.

 

[tookwik4u89]

I've seen it done with JB weld more than once with no problems, the toyota 4 runners with the 3vze that blew head gaskets all the time, fill the pitting on the deck, scrape it level with a razor blade, use permatex hi tack or copper spray on head gasket. Used it on 7m head for pitting around coolant ports also.

 

[tookwik4u89]

yeah, i would think where the compression ring wears it would chew it up quick.