Break in gone wrong??

[hhott71]

Use a FELPRO or GM gasket.
If you have a deck height of 0.025" use the Felpro 1094 it is 0.015" thick giving a 0.040" quench.

If the block was to "0.000" deck use the Perma-Torque Blue Head Gasket @ 0.039"

If you had0.010" cleaned off the deck, leaving about 0.015" for the deck height, use a 0.028" thick GMPP gasket for a 0.043" quench.

Don't use cheap head gaskets.
Re-check the head bolt torque before starting.
Make sure you used PERMA-TEX on each headbolt thread.

I bet you can reassemble with the correct new gaskets and start the prcess over.

[hhott71]

Originally Posted by Marks71BB

Keep in mind, you don't want to take off any more than absolutely necessary to make em flat. It will throw off the mating surface for the intake manifold. It can be worked around but something to be aware of. the bolts and ports will be off just a bit. Any machinist worth his paycheck will know this.

keep us posted!

Making sure you use a 0.040" quench will ensure the bolt holes line up.
(Flat milled)

The deck is 9.025" from the centerline of the crankshaft.
The stroke is 3.480" (1.740" is 1/2 the stroke)
The rod is 5.700" long.
The piston pin to the deck of the piston is 1.560" high from the centerline of the wrist pin to the piston deck.
The deck height is 0.025" from the factory and the stock steel shim head gasket in 0.017" thick.

9.025 - 1.740 = 7.285 -5.7 = 1.585 -1.560 = 0.025"
That 0.025" is the factory deck height. Add in the 0.017" + 0.025" = a quench of 0.042". Keep the quench where it belongs and the manifold bolts should line up. Changing the Piston Pin height and compensating in the formula will work out as does changing the stroke, rod length etc.

[soco200p]

Make sure to have the intake milled as well the match the heads.

[blake22]

im only cleaning up the heads . taking about .004 off each head. i shouldnt have to worry about any quench problems right?

[blake22]

Ended up taking .0075 off of each head and learned alot while watching my new friend work on them. I got the motor back together last night with new felpro head gaskets and thread sealer on all the new bolts. Might post a vid of the motor running later tonight!!

[Turbo Chevy]

Did you get the engine running? video?

[blake22]

we got it going! no overheating problems and runs great!! We put it in the truck this afternoon so might have it driving in the next few days if all goes well. we will for sure get some videos of the motor in action at the mud bog and post them up!! thanks for everyones help!

[Marks71BB]

Good to hear Blake!

[Turbo Chevy]

Originally Posted by Marks71BB

Good to hear Blake!

X2 !! reading "mud bog" made me smile reallllly big! Fun fun !!