288xp build from a box of parts

[davidwyby]

Questions or interest, fire away, I’ll add more.

 

[davidwyby]

Little more progress tonight. Test ran it. I have never run a 288, closest would be my ported Dolmar 7900. The 288 runs good for being low on compression, needs a piston and ring. Goal is to be a grunty, responsive lower RPM felling saw. Interesting looking mix of new and old parts. Still a few things to procure.

 

[Burnham]

Somebody whacked off part of the 3/4 wrap handle I guess? Too bad.

 

[davidwyby]

Somebody whacked off part of the 3/4 wrap handle I guess? Too bad.

If I get real motivated I’ll fix it. I also have a new Pro Safety full wrap for it. Kinda pricey though, not sure I wanna use it.

 

[davidwyby]

Forgot this pic of where I started.

 

[Altissimus]

Though it's been years since I've run a 288 and I could be wrong but seem to remember sometimes the Oiler Gear would strip out , not everyday but sometimes once in awhile

 

[davidwyby]

Though it's been years since I've run a 288 and I could be wrong but seem to remember sometimes the Oiler Gear would strip out , not everyday but sometimes once in awhile

I’ve had a couple melt/strip on 357/359/2156/2159 saws.

 

[davidwyby]

New piston and assorted other smalls showed up just in time for the long weekend.

Motoseal drying in place of the base gasket to decrease “squish”, the space between piston and cylinder roof so as to increase compression and therefore torque.



lookin at the baffle in the muffler tryin to decide if or how many or how large of holes to poke in it to get a little more flow but not reduce throttle response or get crazy loud.

 

[davidwyby]

I should have included in the first post that the first pic is for a chuckle, or I chuckle at myself. I run a machine and welding shop with all the tools/equipment and I have plenty of experience with heating and pressing things…but here at home I make do with a pink hairdryer, purple hammer, and some random chunks of bronze, etc. I think my grandpa painted his tools purple at some point because he got tired of them walking off. They make special tools and there are different methods, but I’m able to make do with what I have at home relaxing in the A/C.

 

[davidwyby]

@SeanKroll I didn’t find one for a 660 (yet) but there are some real good ground up build threads on OPE, mainly by Onan18

 

[davidwyby]

Testing/face cut practice tonight. Tend to be low on the bar end. Trying to learn to make the angled cut first, not particularly well.
Fuel filter got stuck high and dry. I think the pigtail fuel line would be better.
Now the Dolmar 7900 needs a clutch.

 

[davidwyby]

It worked

 

[davidwyby]

We had a fundraiser raffle for a tree guy who got injured. I donated my Jonsered 630 for a prize. It was picked by a guy in Scotland who donated a port job. So, I picked his port job and send the extra cylinder that came with my 288 with his 630.

I fixed the stripped threads in the spare cylinder with an oversize insert. 3/4” NF.
Might fix the fins when it gets back.

 

[davidwyby]

 

[davidwyby]

That was fun, let’s do another for the ported cylinder.

 

[Normzilla]

Tougher than old boots

 

[davidwyby]

Circlip came out and killed it. Gotta rebuild.