288xp porting tips needed

[Yotaismygame]

Currently rebuilding a 288xp and I decided to do some port work. Aside from the usual widening and squaring the ports off, can someone get me started in the right direction. I'm not looking to build the baddest saw ever built but something decently stronger than stock would be nice. I've done quite a bit of reading on the subject and I'm not finding the information I'm looking for.

Here's a few ideas I have already. Decking the cylinder and making a popup. Maybe raise the exhaust a little, smooth out the lowers. Or Decking and cutting the squish band, maybe a little timing advance. Timing advance is something I cant find any info on for this saw. What kind of work does this saw respond well too?

Any help is appreciated.

-Ian

 

[cus_deluxe]

What you plan to do with it would influence what you do to it. Are you using a meteor piston? If its like the 281 and others then the skirt is wider and leaves a lot of room to widen ex port.

 

[cus_deluxe]

Heres my 281. @huskihl did machine work for me. This was meant only for play time so exhuast got raised a bunch, ex port width is “maxed out”...intake is funny on 2 series huskys, widened and increased intake duration a bunch as well.

 

[cus_deluxe]

 

[drf256]

? Send it to @rattler

 

[jacob j.]

[url=https://ibb.co/1KmyFCS]

[/URL]

 

[cus_deluxe]

Haha yeah about as much as the funny intake and block allow. Not the prettiest thing but it ran ok.

 

[Onan18]

? Send it to @rattler

Best Answer.

 

[Yotaismygame]

? Send it to rattler

Best Answer.

Wrong answer. I dont need someone else to do the port work. I am aware of rattler saws.

I am using a meteor piston. This saw will be put up for sale.

 

[drf256]

Wrong answer. I dont need someone else to do the port work. I am aware of rattler saws.

I am using a meteor piston. This saw will be put up for sale.

I was joking. I wasn't aware that you were an expert on port work based on your original question.

Aside from the DIY part of it, it's actually more cost effective to have a seasoned guy do it. Even more so if you'll be selling it "ported"

 

[Yotaismygame]

I was joking. I wasn't aware that you were an expert on port work based on your original question.

Aside from the DIY part of it, it's actually more cost effective to have a season guy do it. Even more so if you'll be selling it "ported"

Not an expert. Sorry about not laughing. The internet has taught me people will bring up all kinds of information not about the question asked. I tend to shut that kind of talk down quick.

How is it more cost effective to pay someone to do the port work than to do it myself? I'm also interested in the learning aspect. Can't put a price on that.

See look whats happening now, we've gotten away from the question I asked.

 

[Wonkydonkey]

Did google “tree monkey 288xp”

 

[Wonkydonkey]

Sorry I could not help myself posting the above

 

[NCPT]

How is it more cost effective to pay someone to do the port work than to do it myself? I'm also interested in the learning aspect. Can't put a price on that.

He probably meant the cost of tooling....unless you already have them.

 

[NCPT]

Or the cost of screwing up a top end.

 

[Yotaismygame]

Every porter started somewhere. I’ve done some porting already and have had good success. Looking for first hand experience. I’m not sure how long this chainsaw fad will last for me but for now I’ll probably only be rebuilding and porting saws. Plain ol rebuilds bores me now.

 

[drf256]

Sorry about not laughing.

No worries. I am.

 

[Yotaismygame]

I finally got the timing wheel on the 288. Using a hyway jug and meteor piston. I will say the hyway jug looks pretty good. Just need to smooth a few things out. Intake duration is pretty short compared to the exhaust. These numbers are without a base gasket. Squish is at .030".

EX: 164.....98
TR: 126.....117
IN: 138.....111
BD: 19

I'm thinking of taking .030" off the base and making a .020" pop up. From there play with final squish as needed, and make whatever adjustments are needed.

Whats your guys take on this?

 

[drf256]

I finally got the timing wheel on the 288. Using a hyway jug and meteor piston. I will say the hyway jug looks pretty good. Just need to smooth a few things out. Intake duration is pretty short compared to the exhaust. These numbers are without a base gasket. Squish is at .030".

EX: 164.....98
TR: 126.....117
IN: 138.....111
BD: 19

I'm thinking of taking .030" off the base and making a .020" pop up. From there play with final squish as needed, and make whatever adjustments are needed.

Whats your guys take on this?

My take is that your numbers are off.

 

[Sawsparky]

Sounds thirsty.