Alky carb conversion?

[Sty57]

Is that the same saw you had sent me a pic of?

Yup

 

[redline4]

I thought so! The pic you sent was closer up, so I couldnt see the whole thing.

Looks even better now that I see the whole thing!

 

[cus_deluxe]

Bumps

 

[Sty57]

Bumps

Bumpity bump.......
Going to try some U4.4 first.

 

[Billy Currie]

I am working on a carb off and on. It's a Chinese Tillotson HS-320A. I don't know if I will be successful or not, but so far I have slightly enlarged the fuel pump cavity, and I am working on the needle/seat area now. I have noticed opening the seat up that it is next to impossible to get the needle to seat when pressure tested. That is my battle at this point.

I didn't like the venturi that the carb had, so I removed the choke shaft and throttle shaft. I increased the bore diameter of the choke side until I opened a blind screw hole and increased the bore diameter of the throttle side to match the choke butterfly installed on the throttle shaft. I'm not sure if it will work, but my goal was to make a more pronounced venturi inducing a lower pressure hopefully pulling harder on the main jet.

If it doesn't work the trash can is never far away.

 

[Billy Currie]

 

[ManiacalMark]

What's the screw pitch? M3X0.5 ?

 

[Billy Currie]

What's the screw pitch? M3X0.5 ?

Yes, I got the screws from Lowe's in the "miscellaneous hardware" section. I had to cut them shorter.

 

[Fruecrue]

Where does a fella go about getting Alky-nitro if he wanted to start melting some pistons?

 

[ManiacalMark]

Cool I figured they were, easy enough to find. I hate trying to get those factory screws back in after thinning things out is a pain.

 

[ManiacalMark]

Where does a fella go about getting Alky-nitro if he wanted to start melting some pistons?

Speed shop

 

[Sty57]

Where does a fella go about getting Alky-nitro if he wanted to start melting some pistons?

Right from a VP distributor.

 

[Fruecrue]

Right from a VP distributor.

I just got done writing them an email to find a local source and get some advice, looks like a good variety of products.

 

[ManiacalMark]

Alky isn't that pricey really, race gas is, nitromethane, no idea.

If there's a dirt track, drag strip or asphalt track then there's performance fuels nearby.

 

[Fruecrue]

What exactly is race gas?

 

[Sty57]

The 5 gal of U4.4 I just got was $84.

 

[Fruecrue]

The 5 gal of U4.4 I just got was $84.

I just read the description on VP’s website.
Have you run it yet?

 

[Sty57]

I just read the description on VP’s website.
Have you run it yet?

Not yet.
I have a distributor not to far from my house.
They go through a lot of it from what they told me.

 

[ManiacalMark]

What is u4.4? turbo blue or purple?

 

[Billy Currie]

Where does a fella go about getting Alky-nitro if he wanted to start melting some pistons?

Look at FHS Oil in the RC link....