long beach local
long beach local
- Location
- Az
Wondering if I could use 33cc 760 domes in a 61x 701 motor I was assembling. It has 81.5mm pistons so is that extra little gap around the squish going to be a no no.
760 domes in a 701 ?
- Thread starter long beach local
- Start date
long beach local
long beach local
- Location
- Az
Well I guess nobody wants to admit running the wrong size domes so I will just run the correct 83mm ones from Tomski. I’m sure it will run better anyways
Quinc
Buy a Superjet
- Location
- California
i am using 701 domes in my 61x cylinder that is bored to 84mm. Not sure if that helps.
long beach local
long beach local
- Location
- Az
I would think that may damage the piston edge. Detonation would occur even more easily that’s why I have heard 84mm pistons requires the 86mm 760 domes ? That’s what I ran on an 84mm cylinder I had that the nikasil coating failed on. (but that’s another topic). Lol I intended to run 760 domes on a 701. But I guess I won’t try it anyway just curious.
- Location
- Daytona Beach, FL
Check the squish with a piece of solder wire inline the crank mine is .012 at edge of piston
long beach local
long beach local
- Location
- Az
I
Will do. I like mine around 45/1000s -50/1000s or .045 -.050 the motor is ran at high rpm extended runs for buoys etc 12thousands sounds awfully tight to me. That’s inches right? For my use I usually use a slightly thicker base gasket.025+ to get a little more squish. I learned this after a couple stuck pistons. I also run the zeel taking timing off the top end versus an enhancer. The zeel probably was the answer though.
bored&stroked
Urban redneck
- Location
- AZ
I have ADA 33cc domes for a 701 I'd trade you...
long beach local
long beach local
- Location
- Az
Thanks but I already purchased a set of 35cc domes so I’m set for now.33s I’d be into race gas but gas is so expensive anyways lol
- Location
- Canberra, Australia.
A long time ago I was told you start using 760 domes once you hit an 83mm bore. Can’t remember who told me this, but it’s one of the few things I remember!
- Location
- Buffalo, NY
The php 701 I have has 760 domes in it. Fun little motor for what it is in an xfs hull.