To Quench or Not to Quench?

I know that they say quench is out of the question W/a slant 6, but my undertsanding is that a quech height of between .065" & .035" is acceptable. The minimal .035" would be applicable only to automatic cars when steel rods are employed.

That being the case, unless my calculations are wrong it is possible albeit at rather high CR.

deck = 10.68
rod = 7.005
piston= 1.594
diff, = 2.081

2.081x2=4.162

4.125 + .050 (.025 offset grind X 2)= 4.175 stroke = .007" + deck

.070 -.007 = .063 block deck reduction for .070" + deck piston crown.


Head: .200" to quench pads on stock (late model) head. .110" deck reduction yields:

.200 - .110 = .090" - .070 = .020 + .035 head gasket = .055" quench height.

.110 deck reduction = 44cc chamber add 1cc for perimeter cut for piston crown clearance.

45cc at .090" quench. Reduce qunch by .045 = approx 7cc (1cc per .006")

45cc - 7cc = 38cc + 18cc for piston dish = 56cc

Swept volume at 4.175 stroke by 3.504 bore = 40.24 cu in = 659.7cc + 56cc = 715.7 cc total cylinder/combustrion chanber voluume/56 = 12.8:1 CR.

Increase quench by .012 to reduce compression but stay whithin .065" (.062") to increase combustion chamber voluume to 58cc.

659.7 + 58 = 717.7/58 = 12.4:1 CR

Lets go the other way.

Reduce quench height to .035" will reduce the combustion chamber voluum by 3cc.

659.7 + 53cc = 712.7/53 = 13.5 CR

So, there you have it. A slant 6 engine can be built W/off the shelf components to achieve accepted quench heights but CR will be between 12.4:1 & 13.5:1.

Now, this is my 1st rodeo W/the Slant 6. (but not stroker engines) Are my calculation/assumptions correct?

Let's hear from you Slant 6 gurus.

This may not have been done before, but as long as the 93 octane factor can be worked around, I see no reason why it wouldn't work.