288xp, 385xp or 390xp??

[RIDE-RED 350r]

Hmmm..ran a displacement calculator on 385 and 390 using 394/5 stroke. 385 gets to 87cc and 390 gets to 90cc. Factory stroker.... Interesting thought.

 

[mdavlee]

The 2 390 I found were 97 118 and 119.
385 was 99 120 and 98 119.

 

[RIDE-RED 350r]

The 2 390 I found were 97 118 and 119.
385 was 99 120 and 98 119.

Hmmmmmmmmm.... Interesting. Thanks Mike

 

[Cracker Boy]

Absolutely not out of the question bud. I'd really like to get my booger hooks on that big ol hawg 056 I mentioned earlier.

And yes, all in good fun

I want 066 flat top short case aluminum flywheel small crank next then im done.even a parts saw. Got a cylinder and piston.

 

[Cracker Boy]

Hmmmmmmmmm.... Interesting. Thanks Mike

385 keeps lookin better huh

 

[RI Chevy]

Were is @RI Chevy at about now

I am here. Lol
What did I miss here?
I was just thinking 462 here. As in Stihl 462! [emoji106]

 

[RIDE-RED 350r]

I am here. Lol
What did I miss here?
I was just thinking 462 here. As in Stihl 462! [emoji106]

A whole lotta homework reading the last 3 or 4 pages of this thread

 

[RI Chevy]

Only if I was looking for a Hooskie. LOL

 

[RIDE-RED 350r]

You need to broaden your horizons

 

[RI Chevy]

Lol. Come on now, I like the Red Heads and those Dolkitas.

 

[XP_Slinger]

Hmmm..ran a displacement calculator on 385 and 390 using 394/5 stroke. 385 gets to 87cc and 390 gets to 90cc. Factory stroker.... Interesting thought.

Like we were talking it turns it into a bottom fed 288, essentially. Always wondered what that would be like. And this comment is going back a ways but 1mm is .040 Joe, so making up that difference with a chamber cut and pop up would be pretty easy. That was a lot of reading and sifting through the stihl monkeys throwing poop made relevant content a little more elusive. @Cracker Boy lol

 

[RIDE-RED 350r]

Yeah, I'm foruming with my phone and didn't feel like flipping over to Google and running the conversion calculator. I see that the extra mm of stroke is pretty simple to work out though.

Now, about that crank conversion.... Warrants a moment's consideration if we had both cranks in hand to compare and measure.

 

[huskyboy]

Like we were talking it turns it into a bottom fed 288, essentially. Always wondered what that would be like. And this comment is going back a ways but 1mm is .040 Joe, so making up that difference with a chamber cut and pop up would be pretty easy. That was a lot of reading and sifting through the stihl monkeys throwing poop made relevant content a little more elusive. @Cracker Boy lol

Bottom fed 288? Closest thing is a Jonsered 930 super.

 

[beaglebriar]

Yeah, I'm foruming with my phone and didn't feel like flipping over to Google and running the conversion calculator. I see that the extra mm of stroke is pretty simple to work out though.

Now, about that crank conversion.... Warrants a moment's consideration if we had both cranks in hand to compare and measure.

I have both in the shed. Would have to do some case splitting though. See what the weekend brings, I could probably do some measuring.

 

[beaglebriar]

Firewood hack owned saws. Gotta love them lol.

Bottom fed 288? Closest thing is a Jonsered 930 super.

Got a few of them laying around too...[emoji3]

 

[mdavlee]

Big end is the same. Might be able to swap them around and get it to work.

 

[beaglebriar]

Big end is the same. Might be able to swap them around and get it to work.

Would the view be worth the climb though?

 

[RIDE-RED 350r]

I have both in the shed. Would have to do some case splitting though. See what the weekend brings, I could probably do some measuring.

Don't go to any unnecessary trouble bud, this build isn't even sitting on my bench yet, let alone having cranks to modify and swap.

 

[beaglebriar]

Don't go to any unnecessary trouble bud, this build isn't even sitting on my bench yet, let alone having cranks to modify and swap.

Chit they gotta come apart sometime anyway. Lol

 

[mdavlee]

Would the view be worth the climb though?

It might be.