How much compression, DASA 1100 (10mm 94mm) - 46cc domes

[Christian_83]

Hi Guys
So how much compression are you guys getting on a DASA 10mm stroker on 94mm pistons, with 46cc domes. fresh build. 1.50mm squish.
I’m getting 225psi, which I think it’s pretty high for pump gas domes

 

[DylanS]

Thank god you posted this here too I was scared the Facebook scientists were going to claim another victim

No fluid in cyls?
Did you check squish clearance?
I’m assuming you used a dasa base gasket so squish clearance shouldn’t be a issue but those numbers seem stupid high on 46 cc domes

 

[Christian_83]

I had a small shot of oil in each hole.
Yes squish is 1.50mm wich should be close to perfect.
Yes DASA base gasket. i will fire it up tomorrow and see if it settle a bit.

 

[Jcary85]

If you haven’t fired it yet I’d say there’s a 100% chance it will drop a lot after first fire.

 

[Christian_83]

Yeah it dropped to 180/185 after first fire.
I guess it has been the little squirt of oil combined with all new bore and pistons.