For a E-ton Viper 90 with pipe, air filter, and clutch mods-
What is the best carb choice when using the 54mm big bore kit????????

And will I need a different intake to use it??????????

 

is the 54 stock or ported ? using the stock 42mm crank or the 47mm stroker crank ? most the 54 cylinders are for the 47 crank so if the cylinder was not decked you will have low compression. if the cylinder is not ported a 20mm carb with a koso or oko intake will be fine,

Mark

 

I am looking to get a stock 54mm big bore kit. And I run a stock 42mm crank. Is this a bad idea/combination???
How low will the compression be???

 

get a 53mm cylinder. the 54mm is for the 47 stroker crank. you will have to mill your 54 cylinder to get a decent compression number.

Mark

 

LOL!
This got way off topic!!!!!!!!!
I looked into this a little deeper-the kit I am looking at is designed for the stock stroke 90's. They claim 180psi cranking compression with the stock 42mm crank. I have my trusty snap-on compression gauge set, maybe we'll put it to the test.

 

ok just remember i told you so. stock stroke 90's ? some are 42mm stock and some are 45mm. is this kit an ebay item ??

Mark

 

Mark-I sent you a p/m.

 

I am having much trouble from my stock carb. Where can I find a good replacement?

 

WRH RACING

 

Remember Mark told you so.
Anybody can deck the cylinder, but the ports will not be in the correct place. A correct 52 or 53 will make more power, every where!
Samson you ready for more pie-err Yet? That's how Mark says it.