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the hot dog king of chicago,but he,s gone.

Quote:

Originally Posted by Rookie (Post 4233076)

Mark IV should be 17046. Great gaskets
http://www.jegs.com/i/Fel-Pro/375/17046/10002/-1

unless he has machining for the wire ring he can't use that gasket...

Quote:

Fel-Pro Loc Wire gaskets are engineered to provide the best sealing available for severe applications. They have oversized wire rings that lock into receiver grooves which must be machined into the cylinder heads. Precise machining is critical to the success of these gaskets.

*Each Fel-Pro gasket type is sold 1 per package

Mike was rite,,the 17042 is what you want to use on your engine..i would also buy a set of head studs ..studs make a true torque spec so every stud/nut has the same load..a head bolt will vary in uneven load to the cylinder head..

I could be wrong but I don't believe the 17046 are Loc Ring,

Quote:

Originally Posted by abones (Post 4233163)

I could be wrong but I don't believe the 17046 are Loc Ring,

from jeggs

Quote:

Fel-Pro 17046 - Fel-Pro Wire Ring Cylinder Head Gaskets

Fel-Pro 17046 - Fel-Pro Wire Ring Cylinder Head Gaskets
Fel-Pro#375-17046
Steel Wire Ring Head Gasket
Big Block Chevy Mark IV Marine
4.370"
Compressed thickness .039"
Compressed volume 9.7cc
FREESHIPPING
& HANDLING! $47.99 Order Today Ships 01/01/15
Online Price Match
Add to Wish List

Overview
Fel-Pro 17046 - Fel-Pro Wire Ring Cylinder Head Gaskets
Fel-Pro wire ring head gaskets are offered in various bore sizes, thicknesses, and materials to meet any need. Fel-Pro head gaskets are designed to be relied on by the professional racer as well as the Sunday cruiser when it comes to sealing combustion pressure, coolant, and oil under all conditions.

Pre-Flattened Steel Wire Ring Head Gaskets
The strength of steel wire sealing with minimum brinelling of aluminum heads.

Pre-Flattened Copper Wire Ring Head Gaskets
Copper will not brinell aluminum heads, and these Fel-Pro gaskets also offer superior heat dissipation from combustion hot spots.

Loc Wire Ring Head Gaskets
Fel-Pro Loc Wire gaskets are engineered to provide the best sealing available for severe applications. They have oversized wire rings that lock into receiver grooves which must be machined into the cylinder heads. Precise machining is critical to the success of these gaskets.

*Each Fel-Pro gasket type is sold 1 per package

like I said I don't think it is a Loc Ring, I believe it is a pre flattened steel wire. no need for a receiver groove?

if not I stand corrected.

1)The strength of steel wire sealing with minimum brinelling of aluminum heads.

Quote:

I dont believe he has alumium cylinder heads,the 525 sc were cast iron..

2)this is how i read it,

Quote:

They have oversized wire rings that lock into receiver grooves which must be machined into the cylinder heads. Precise machining is critical to the success of these gaskets.

which tells me machined groves need to be in place..i went through this with another guy that used this gasket and they leaked water into his cylinder and hydrolocked his engine..

3) 17046 is for a mark motor not a genV

the 17046 is for a mark4 block.it comes 3 different ways.1-a pre flattened copper wire.2-a pre flattened steel wire.3- a locking wire ring that requires a reciever groove.i personally would never go with option 3,if i was build an engine with high cylinder pressure i would go with a mls gasket.if a nitrous or blown alcohol engine i would entertain a copper gasket with a o ring and a reciever groove.

Quote:

Originally Posted by mike tkach (Post 4233197)

That is the point I was trying to get across in post #13 and 15, as Rookie did not recommend the Loc-ring option!, I have used the 17048 (502) version of this gasket on my neighbor's stock Mercury Blue motors and they worked out great. Much better gasket than what comes on them from Mercury.

Got the two gaskets I thought might work.Turns out the 1037 and the17046 are the same gasket the 17046 is just labeled marine on the package
Came with these instructions.
Has anyone done this and had no cooling isues
these gaskets also have only one hole in the side the other is blocked off.
By the way it is a gen 4 block I replace the gen 5 that it had.

thanks Guy

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