Air leak

[JSBanshee]

I just checked for any air leak and I have a big one it won’t even hold air, you can actually hear it come out as I’m pumping, sounds like it’s coming out by the flywheel, any suggestions on where it might be coming out? 

[dano3]

crankshaft seal or case halves. Pull the flywheel cover off and spray soapy water behind the flywheel to see if you can see exactly where the leak is. You will need to buy a flywheel puller to pull the flywheel off to get a better look and to pinpoint the leak.  

[JSBanshee]

If it’s one of those two, would I have to slit the motor?

 

[kawa110]

Yes to reseal cases and yes to replace crank seals.

[JSBanshee]

How would silicon work around the leak ?

[dano3]

54 minutes ago, JSBanshee said:

How would silicon work around the leak ?

Most likely would not and if you got lucky it would only be a matter of time before it returns and ends up burning that piston up costing you more $. 

[JSBanshee]

And to check if I burn any pistons, would I know by checking cylinder compression? Because I checked them and each one has 160 with 21cc domes 

[dano3]

44 minutes ago, JSBanshee said:

And to check if I burn any pistons, would I know by checking cylinder compression? Because I checked them and each one has 160 with 21cc domes 

that should prove top end is in good condition. I would avoid running it any further before you resolve that air leak. 

[n2otoofast4u]

How would silicon work around the leak ?

NO

[SKEETER]

JB WELD > silicon

[JSBanshee]

Thank y’all for the help