FX-1 771 dome question

[Asmbandits]

Ive been doing a lot of searching and reading here on the topic of dome size and understand the variables but I really want to get this right. Ive put a lot of time and $$ into the engine im putting together and want to be no higher than 180psi as ive read that with the msd enhancer it might be asking for trouble if over that.

Here is my setup>

771 (85mm) 61x cylinder, freestyle ported northwest sleeves
62t case, no porting
62t stator and flywheel, stock static timing with msd cdi enhancer.

I have a set of 37mm domes but im thinking with this setup id be around 190psi but this is a crude estimate.

Any suggestions of what size im looking for to be as close to 180psi as possible? Also does this seem like a good psi to be at with what I have? I ride mostly flat water freestyle and rarely run wot for more than a few seconds at the most.

 

[SUPERTUNE]

Ive been doing a lot of searching and reading here on the topic of dome size and understand the variables but I really want to get this right. Ive put a lot of time and $$ into the engine im putting together and want to be no higher than 180psi as ive read that with the msd enhancer it might be asking for trouble if over that.

Here is my setup>

771 (85mm) 61x cylinder, freestyle ported northwest sleeves
62t case, no porting
62t stator and flywheel, stock static timing with msd cdi enhancer.

I have a set of 37mm domes but im thinking with this setup id be around 190psi but this is a crude estimate.

Any suggestions of what size im looking for to be as close to 180psi as possible? Also does this seem like a good psi to be at with what I have? I ride mostly flat water freestyle and rarely run wot for more than a few seconds at the most.

Yes, those should put you very close to where you need to be, depending on exhaust port height and duration.

 

[Asmbandits]

Awesome thanks!