Need Answers for my 10 mil banshee project

[Maxc23]

Do I need to have my engine case modded for the 10 mil... i'm using 33mm keihin carbs on a 10 mil cheetah kit, noss head with 72mm pistons from cascadeinnovations.com.. making it a 521cc motor.. what i wanted to know is.. what kind of jets should I use ( i'm on sea level)..with all these new parts can i still use the stock timing key... or should I buy an aftermarket advance time key?... btw anybody know if Vito's 10 mil crankshaft is a good brand?

[joee20002]

ya you need your case trenched...

[Maxc23]

what about a 4 mil? should I trench the case...

[climb any hill]

You're fine with the 4mil, i think is 5mil and up where you need case trenching.

I'm not sure what size jets you need but I'm thinking those are small carbs for a big bore cheetah!
There's happy members here with their stroked Vito's cranks but can't recall feedback on a 10mil..
I'm sure the builders will see this thread and answer your questions as needed!

[sandpsycho]

I think you gone need 36-39mm carbs.

[strokeittwice443]

a 10mil cheetah is gonna need big carbs. you shouldnt use anything smaller than a 38mm.

[Maxc23]

are 33mm carbs ok for a 4 mil cheetah? (472cc)

[sandpsycho]

Originally Posted by Maxc23

are 33mm carbs ok for a 4 mil cheetah? (472cc)

Still small, I'm thinking 36mm+. Hit up on of the sponcers, maybe they can bore em out.

[banshee11]

i have 33mm on a stoke stroke 65mm cub and there to small

[BansheeMan211]

Originally Posted by Maxc23

Do I need to have my engine case modded for the 10 mil... i'm using 33mm keihin carbs on a 10 mil cheetah kit, noss head with 72mm pistons from cascadeinnovations.com.. making it a 521cc motor.. what i wanted to know is.. what kind of jets should I use ( i'm on sea level)..with all these new parts can i still use the stock timing key... or should I buy an aftermarket advance time key?... btw anybody know if Vito's 10 mil crankshaft is a good brand?

Yes you have to trench your casses for a 10mil. Anyting bigger than a 4mil you have to trench. If your gonna run the 10mil cheetah kit I would suggest getting bigger carbs, nothing less than a 39 or 40mm. I take it your also gonna be running alky, cause a 10mil cheetah on reg gas is just plain retarded and wth alky you will gain more HP for sure!! So if your runnin alky I would start off with 118 mains and 55 pilots with the powerjets wide open, keep it fat starting off and work your way down to a safe and healthy point.