Hybrid Build

[Adirondackstihl]

Bit*


Dumb@$$ engineer...

Dafuq you talkin bout you hillbilky?

 

[Adirondackstihl]

Gotta love this stuff....



We can fix that....

 

[KG441c]

I fixed it

Thanks bud.
Roughed in with a DC Carbide burr and finished by hand with a Nicholson Mill Bastard file.

Took about 0.030-0.035" off each face.
Still have a bit further to go.
I need 2.3875" min to make it fit.
Gonna shoot for for 2.375". Should give me some wiggle room.

What is the way to get the cylinder lined up on the crankcase before tightening?

 

[KG441c]

Gotta love this stuff....



We can fix that....

Looks good! Do u sand with drums or mandrel and emery cloth?

 

[Adirondackstihl]

Looks good! Do u sand with drums or mandrel and emery cloth?

Homemade 1/8" split mandrel with emery cloth.
This is 180 grit finish.
I'll go back in later with 320

 

[Adirondackstihl]

What is the way to get the cylinder lined up on the crankcase before tightening?

Gotta hold your tongue just right

 

[PA Dan]

Before I sent my case to get powdercoated I took some off the case. My cylinder isnt here yet so ill see what I have to take off when it does.

 

[KG441c]

Homemade 1/8" split mandrel with emery cloth.
This is 180 grit finish.
I'll go back in later with 320

Nice! Laslab was polishing his 046 d exhaust today in my shop with that jewelers rouge and he had it lookin like a new set of polished Foose wheels!!!

 

[huskihl]

Homemade 1/8" split mandrel with emery cloth.
This is 180 grit finish.
I'll go back in later with 320

Pics? Never figgered there was enough room in 1/8" to try that

 

[Trx250r180]

What is the way to get the cylinder lined up on the crankcase before tightening?

saw the heads off a couple bolts ,finger tighten them into the case ,now you have alignment pins to work with ,i leave the recoil cover off ,and roll the flywheel around to cycle the piston up and down to check clearance skirt to case .

 

[KG441c]

saw the heads off a couple bolts ,finger tighten them into the case ,now you have alignment pins to work with ,i leave the recoil cover off ,and roll the flywheel around to cycle the piston up and down to check clearance skirt to case .

Makes sense. I never knew exactlty what to do so I left all 4 barely loose and worked the piston several times thinkin that would self center?

 

[big t double]

thinkin that would self center?

Did it?

 

[KG441c]

Did it?

Heck I dont know!! Lol!! Only thing I knew to do!! It ran really well and never blew up and was taken apart several times. I was paranoid in my mind thinkin whether or not it was center . If the holes werent oblonged symetrecially would it be possible to get it off centered front or back?

 

[Adirondackstihl]

The last one I built I just used an 044/440 base gasket as a template and moved the bolt holes inward until they lined up with the gasket.
Then I made a beer can gasket

 

[Adirondackstihl]

Pics? Never figgered there was enough room in 1/8" to try that

 

[Stihlofadeal64]

Gotta love this stuff....



We can fix that....

Smoooth operator !

 

[PA Dan]

Wow! Ill have one made in the morning!

 

[big t double]

Cool...I've been wondering about making sure it's all lined up. Thanks for the tips.

 

[Trx250r180]

Heck I dont know!! Lol!! Only thing I knew to do!! It ran really well and never blew up and was taken apart several times. I was paranoid in my mind thinkin whether or not it was center . If the holes werent oblonged symetrecially would it be possible to get it off centered front or back?

If you use an ms440 base gasket and eyeball it center you will be fine ,as long as the piston goes up and down without binding or rubbing ,you did good .

 

[KG441c]

If you use an ms440 base gasket and eyeball it center you will be fine ,as long as the piston goes up and down without binding or rubbing ,you did good .

Ok. I like the idea yall do with clearancing the two case halves front and rear