Vito's 240Cc Blaster Big Bore

[brian3127]

When I do the leak down test on the engine does it matter if the piston is in the tdc or bdc position.

 

[Slydog]

When I do the leak down test on the engine does it matter if the piston is in the tdc or bdc position.

Set it at the bottom

 

[Larry's Shee]

Makes absolutely no difference. On a banshee you can’t get both pistons at BDC, and they’ll test just fine

 

[brian3127]

Ok thanks guy .

 

[Slydog]

Ok thanks guy .

At bottom transfer ports are exposed

 

[brian3127]

I did the leak down test today.
Pressured the engine to 7lbs. And it lost 1/2 a lb in 7 minutes.
So I would say that's a successful engine build. Reinstalled the engine back on the blaster and did a heat cycle.

Thanks for all the help guys I appreciate it.

 

[Slydog]

I did the leak down test today.
Pressured the engine to 7lbs. And it lost 1/2 a lb in 7 minutes.
So I would say that's a successful engine build. Reinstalled the engine back on the blaster and did a heat cycle.

Thanks for all the help guys I appreciate it.

I did the leak down test today.
Pressured the engine to 7lbs. And it lost 1/2 a lb in 7 minutes.
So I would say that's a successful engine build. Reinstalled the engine back on the blaster and did a heat cycle.

Thanks for all the help guys I appreciate it.

Your getting close. Best to retouqe after heat cycles

 

[brian3127]

Retouqed them this morning
All good so far

 

[brian3127]

I ran the blaster today.
Had to put a smaller pilot jet in the carb. Because I could back the air mixture screw all the way out and it still ran.

The I had to drop the needle pin one notch. To get it to responded right at 1/4 to 3/4 throttle.

Will hopefully do the main jet tomorrow and maybe not going to start a remodel job on my bathroom. Hopefully I can find some time to mess with the blaster.

 

[Slydog]

I ran the blaster today.
Had to put a smaller pilot jet in the carb. Because I could back the air mixture screw all the way out and it still ran.

The I had to drop the needle pin one notch. To get it to responded right at 1/4 to 3/4 throttle.

Will hopefully do the main jet tomorrow and maybe not going to start a remodel job on my bathroom. Hopefully I can find some time to mess with the blaster.

Priorities priorities

 

[DLStryker]

You should consider getting the cylinder ported. The Vito's cylinder, out of the box, is a slouch. A ported stock cylinder will out perform it. Just not the best design. I have a ported Vitos 240 cylinder, rechambered Vito's 240 head, 3mil stroker crank, 35mm PWK Airstriker carb and the Vito's Fat Bastard pipe.

 

[Slydog]

Yeah the porting and head mod wake it up for sure

 

[Chupy]

You should have went with a airsal kit way more powerful than the Vito's 240

Do you know where I can find a 71mm Airsal piston and rings? I’ve been looking all over and it says out of stock. Thanks