Need a new set of domes, and them cut who do I go to?

[BANSHEEBEEFM2M]

Lmk have a ss lr 66.5 bore blaster pistons

[Bennett131]

seriously?

[trickedcarbine]

Do you have a way to measure deck height?

[WINDYCITYJOHN400]

Look at his bore size.

 

NOW you get domes made?......OK.

 

Hey I have some killer strong, fully ported S.S jugs that are set up for a long rod crank.

They are a 66.75 bore.

If you are interested, I'll sell them WITH my domes for $325 shipped. LMK

[Deadbeat]

http://www.nossmachine.com/

[trickedcarbine]

Look at his bore size.

 

NOW you get domes made?......OK.

 

Hey I have some killer strong, fully ported S.S jugs that are set up for a long rod crank.

They are a 66.75 bore.

 

Yes. So as to get another season. Why not, yours are 66.75 right?

[BANSHEE HP]

66.5 is .100, which is going to require a big bore dome, with a 9° squish band angle.

Here in lies the problem. You haven't added any stroke but are using a 5mm longer rod, the blaster piston is a 6mm offset pin height. So if you were setting this up on a stock height cylinder with a stock thickness base gasket, the piston wouldon't come to the top of the bore. It would be .050" down from the top of the bore because that 1mm difference in pin height to rod lengths and that's including the .010" that a stock height piston with stock cylinder(height) and gasket would be below the top of the bore.

 

So what's your setup? Because at this point you need a dome with no step at all or a dome that has a squish band that protruds into the bore. Both of which are domes that no one has made and no one will make because it's just the wrong way of setting up stock stroke long rod.

[BANSHEE HP]

And wcj's 66.75 .110" stock cylinder? I didn't know wiseco made a .110 over 795 series piston. In fact I know they dont. I'm thinking he mistyped the bore size.

[trickedcarbine]

Good call BHP, can't he get a piston from WSM that will be 5mm off set but available on 66.5? I've never carried stock cyls past 66 with out going to a big bore 68mm^ Sleeve, so the blaster piston thing I'm not up on all the blaster piston stuff.

 

Is running Minimal base gasket and decking the cylinder an option? After all, the top end in question is at the end of it's life.

[BANSHEE HP]

You can't go past 66.5mm on a stock sleeve. Maybe they both have the thick big bore sleeves, but it hasn't been mentioned so I think it's doubtful. Wsm might make a 5mm offset 66.50 piston but I'd have to look.

[WINDYCITYJOHN400]

Blaster piston

66.75

 

But don't try that on most cylinders.

90% will break once they get that thin.

I think mine was a casting that happened to be aligned perfect.

And yes....you need dome that drop into the cylinder since it's not a zero deck motor.