066/394 hybrid build

[psuiewalsh]

I might even use a mikuni boot like this one and use a WB or HL carb.

View attachment 29927

Shindaiwa style.

 

[hseII]

Shindaiwa style.

I was thinking Yosemite Sam.

Cause Red.

 

[Chainsaw Jim]

I got into this thing and next thing I know it's after 3am. Lol
I decided on the 394/395 piston and put it on a little weight loss program. I was able to leave the skirt at full length by relieving a little area on the edges of the crankcase.

Here's the cylinder with the holes offset and sized tight to the bolts in place for perfect alignment.
Tomorrow I'll relieve a little bit of area on the case so it'll sit down in place.
I plan on using a 3mm spacer gasket to start off with to see how it runs, then go from there. I'd hate to miss something by immediately lowering the intake.

 

[paragonbuilder]

I got into this thing and next thing I know it's after 3am. Lol
I decided on the 394/395 piston and put it on a little weight loss program. I was able to leave the skirt at full length by relieving a little area on the edges of the crankcase. View attachment 36826

Here's the cylinder with the holes offset and sized tight to the bolts in place for perfect alignment. View attachment 36825
Tomorrow I'll relieve a little bit of area on the case so it'll sit down in place.
I plan on using a 3mm spacer gasket to start off with to see how it runs, then go from there. I'd hate to miss something by immediately lowering the intake.

I like how you experiment Jim! This is great!!


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[smokey7]

Very cool build. I can't wait to see what this runs like. Guys that build stroker cranks and engines use the spacer too. Seems to work well. Watching closely.

 

[Chainsaw Jim]

There are a couple reasons why I'm not using a 395 cylinder. For one I'm only using what I have on hand which makes the decision easy for me. Then there's the intake difference. Although the 395 is set up for a rubber boot from the factory, I think the 394 intake can be made to be larger than on the 395.

 

[Deets066]

There are a couple reasons why I'm not using a 395 cylinder. For one I'm only using what I have on hand which makes the decision easy for me. Then there's the intake difference. Although the 395 is set up for a rubber boot from the factory, I think the 394 intake can be made to be larger than on the 395.

Will the 66 case handle a huge intake though? Or will you just end up with a lot of spit back?

 

[Chainsaw Jim]

Will the 66 case handle a huge intake though? Or will you just end up with a lot of spit back?

Why wouldn't it?
And I do suppose it would spit back if I don't carb it right.

 

[Deets066]

I'm sure it will be fine, pretty cool build ya got goin on

 

[Chainsaw Jim]

I'm really keeping my fingers crossed in hope that it all turns out. I highly anticipate running into a roadblock when it comes to a good muffler application.

 

[P.M.P.]

Dude your in uncharted waters I'm diggin it you rock man.

 

[Deets066]

I'm really keeping my fingers crossed in hope that it all turns out. I highly anticipate running into a roadblock when it comes to a good muffler application.

Expansion chamber

 

[Chainsaw Jim]

Yeah that's what it will likely be though I would rather deal with all the beginning stage work with something a little easier to handle. I'm also kinda hoping to have a good sleeper that piped saws won't see coming so I might mod an 064 muffler to fit.

 

[Chainsaw Jim]

Another late night in the books.
It's ready to bolt down and start putting together. There's a few more cylinder fin edges to clip so the 064 top cover fits and I still need to put a few minutes into shaping the intake.

And I also decided to use the 1128 poly flywheel.

 

[Magic_Man]

This is Awesome, Jim I love your dedication to complete Frankenstein hybrids. If I had time and tools I would be building the same kind of saws.

 

[Chainsaw Jim]

Here's the intake with the outer part reshaped for a large boot. I'll enlarge the inside to match the boot when I tear it back down for port work after a base run.

 

[paragonbuilder]

Looking good Jim!


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[jmester]

Very cool. Looks great so far.

 

[Chainsaw Jim]

Sorry to be taking so long on this thing. I've been dikking around the shop looking for the right material for a spacer and figured I'd make use of a bad cylinder by chopping off the base and using it. Only thing is I blew it on the first cut by cutting it way too thick and now I have to cut it again without the rest of the jug to hang on to.

 

[smokey7]

Thatsawhole lot of sanding.... Do you know anyone with a Bridgeport?