Project Stumpbroke Jonsered 2165

Stumpys Customs · Mar 6, 2012

I've got a buddy of mine's Jred 2165 that seized a lower rod bearing. The cyl diddn't suffer any damage so It will remain 65cc.

I'll be useing a Forester brand crank. So far the quallity of it looks good.

Stay tuned!!:msp_thumbup:

Buffhunter · Mar 6, 2012

Subscribed :rock:

atvguns · Mar 6, 2012

Subscribed

Stumpys Customs · Mar 6, 2012

Here's the timing #'s

EX dur 158*
TR dur 120*
IN dur 138*
BD 19*
SQ 0.040"

I'm setting up to cut the squishband & the base right now. :bang:

Hank Chinaski · Mar 6, 2012

ya done yet? it's been 47 minutes... you can eat later...

Adirondackstihl · Mar 6, 2012

Stumpys Customs said:
Here's the timing #'s

EX dur 158*
TR dur 120*
IN dur 138*
BD 19*
SQ 0.040"

I'm setting up to cut the squishband & the base right now. :bang:

Vid or it didnt happen.........LOL...........:hmm3grin2orange:

jerrycmorrow · Mar 6, 2012

whaddaya think caused that bearing to seize? looks really dry.

Stumpys Customs · Mar 6, 2012

Adirondackstihl said:
Vid or it didnt happen.........LOL...........:hmm3grin2orange:

LOL, That's funny

otstir:

I've got pics uploading right now.

jerrycmorrow said:
whaddaya think caused that bearing to seize? looks really dry.

Not 100% sure. everything checked out fine. I'll have to ask him about what kind of mix he's usein.

lfnh · Mar 6, 2012

what shape were the outboard bearings in Stump ?

Stumpys Customs · Mar 6, 2012

lfnh said:
what shape were the outboard bearings in Stump ?

They were in decent shape. A lil rough from some of the grit from the rod bearing, but they didn't look as dry.

Hedgerow · Mar 6, 2012

Subscribing... I heard there was free popcorn in here!!!

opcorn:

Stumpys Customs · Mar 6, 2012

Here's some pics of the squishband cutting.
I took .050" off the band & .050" OFF the skirt the goes down into the case.

Setting up to cut the base .070" to get .020'' squish. After I eat a bite. :cheers:

nmurph · Mar 6, 2012

Stump, will you show us a few pics of how you are attaching the cylinder to the chuck?

Is this an OP or CP cylinder?

Stumpys Customs · Mar 6, 2012

nmurph said:
Stump, will you show us a few pics of how you are attaching the cylinder to the chuck?

Is this an OP or CP cylinder?

Nothing to special.

The 2165/365 special cyl are closed port.

Stumpys Customs · Mar 6, 2012

I got the base cut.

Now to lay out the cyl to start porting. :rock:

nmurph · Mar 6, 2012

A couple of questions if you don't mind: are you cutting the squish band on an angle and are you leaving a band uncut right at the edge where the wall and combustion chamber meet?

Stumpys Customs · Mar 6, 2012

nmurph said:
A couple of questions if you don't mind: are you cutting the squish band on an angle and are you leaving a band uncut right at the edge where the wall and combustion chamber meet?

I'm cutting it flat.

blsnelling · Mar 6, 2012

Would an angle even be possible without cnc??

jerrycmorrow · Mar 6, 2012

are you building the piston up to project into the combustion chamber?

Hank Chinaski · Mar 6, 2012

blsnelling said:
Would an angle even be possible without cnc??

only if you're good ....

I practice drawing circles with an etch-a-sketch... then I run out to my mill while I still have the muscle memory :hmm3grin2orange:

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