hercalmighty

He said he had 20cc 4mil domes. That would be race gas domes. A 4mil cut dome for pump gas would be in the 24cc range Sent from my VS990 using Tapatalk

Honestly it sounds like you cooked the top end. If it had 180 psi you are well past pump gas. What brand compression gauge are you using? If it's a cheap one it might be giving you a bad reading. The plugs backing out is a sure sign of detonation. Before you tear the motor down at all, do a leak down test also. It will tell you if you have any air leaks Sent from my VS990 using Tapatalk

You could sell the domes you have and get new ones cut, OR run 110 octane. DO NOT run the domes you have now this 93 octane Sent from my VS990 using Tapatalk

A 20cc stock stroke dome vs a 20cc 4mil dome is huge. I ran pretty much the same setups. 165 psi with stock stroke domes and about 185 psi with the stoker domes. With the 20cc stoker domes I had to run 110 octane. I switched to 23cc stoker domes and had about 160 psi and ran 93 octane Sent from my VS990 using Tapatalk

You would have to check your squish and compression Sent from my VS990 using Tapatalk

Ok. So if they are cut and you want to run pump gas, you will need different domes Sent from my VS990 using Tapatalk

Are you running a spacer plate or cut domes? If you are running cut domes, 20cc domes are too small for 93 octane. You would need 23-24cc domes Sent from my VS990 using Tapatalk

Mikuni. So try a 27.5 pilot, middle clip, maybe go to a 300 main just to be safe and 2 turns out on the air jet Sent from my VS990 using Tapatalk

Two different brand of carbs means the jet sizes are different between the two. Mikuni carbs and keihin carbs use specific jets to each other. Sent from my VS990 using Tapatalk

What brand carbs are the duals and what brand is the single Sent from my VS990 using Tapatalk

You should be around a 27.5 pilot and a 290 main Sent from my VS990 using Tapatalk

Even if the arms weren't long travel, they still got the length of the arms wrong. On the order it says +2 not +3 Sent from my VS990 using Tapatalk

Yup. I have the same a arms and my elkas are 19 1/2 inchs Second pic is of a yfz shock next to my elka Sent from my VS990 using Tapatalk

You do know mikuna and keihen carbs use different sizes Sent from my VS990 using Tapatalk

Mikuna and keihin carbs use different size jets. 280 sounds like a mikuna size jet Sent from my VS990 using Tapatalk

A business card works well Sent from my VS990 using Tapatalk

12/41 is way too short of gearing for dessert racing. You should probably be at least 14 front. You could probably go 15 front and fine tune with the rear Sent from my VS990 using Tapatalk

I believe it's a n68a needle Sent from my VS990 using Tapatalk

What is all done to your banshee right now? What gearing are you running right now? Sent from my VS990 using Tapatalk

I might be totally off on this but would the draw thru be harder on the reeds then the blow thru setup? Sent from my VS990 using Tapatalk

Fast has fuel lines Sent from my VS990 using Tapatalk

I tried that one. Doesn't work Sent from my VS990 using Tapatalk

Hey. Does anyone have a Rocky mountain discount code? Thanks Sent from my VS990 using Tapatalk

Thanks a lot hp2000. Really appreciate it. Give some other guys some good info too Sent from my VS990 using Tapatalk

You have had issues with the hipers leaking air? Sent from my VS990 using Tapatalk