Thall's 262xp Rebuilded

[RiverRat2]

Rimihalek

It always gets confusing when ATDC or BBDC, and such aren't specifically mentioned.

I think the easiest way to discuss port timing is just to deal with open duration, like 165* duration for intake, 120* duration for transfers and 170* duration for exhaust. All the other values can easily be calculated from duration times if someone is interested in port opening ATDC or ABDC.

Ive got and answer for your Sig,,,,,,,"I can't help wondering who caused all the heat that ended the last ice age 20K years ago."
Buzz Sawyer- Arborist Site senior member

Here it goes,,,
It was caused by all the soccer moms driving around in their SUV's,,,,, now if you believe that is part of the cause of global warming... I got some real nice farm land for sale in SE Texas & SW LA you might be interested in!!!!

 

[Woodie]

Nice job, Manual! Was away from the computer all weekend, missed this thread. Appreciate the illustrated how-to big time.

(Insert slam on THALL here)

 

[J.Walker]

As some of you know Thall sent me a 262xp bound for the Dumpster.
So I would like to share with you what I have done to get it running.

Grrrrrrrr. I was trying to post some pics of what it looked like when tom had it.
Hay Ultra are you out there ?

Manual how is your rebuilt 262 running. I've got a good understanding now, thanks to you, of port timing and the use of the degree wheel.
Did you change the port timing figures to what Four Paw's spoke of ?
Thanks
J.Walker

 

[manual]

Better yet I also milled the base of the cylinder to accept the gasket plus did some more in-depth work on the transfers.

 

[manual]

That was roughed in I'll post better pics.

 

[rreidnauer]

Manual, how can compression be increased by machining the piston top at an angle... would the combustion chamber volume not increase that way ? just curious.
thanks

This is how I see it,
you do your squish test on the out sides of the piston,
your combustion chamber is con-caved, you just made your piston convexed.
My squish was .013 flat topped.
My squish is .018 @ 2* angle, So the piston center is .030" higher or into the combustion chamber then using the flat top.
remember 1* = .017" 2* = .035"

Ummmmm, please correct me if I am wrong. Unless you were to shave off 0.030" on the cylinder base, or use a new connecting rod that's 0.030" longer, doesn't doming the top of the piston that way just leave the piston's center at the same distance into the cylinder, and like Belgian said, only increases displacement volume? Or is that why you choose to omit the base gasket, to make up that difference? I'm guessing that opening the intake porting is what's increasing the compression, and the increased volume is making the added horses.

Just some thoughts on this older resurected thread.

 

[Cut4fun]

Bump for Brad and others. A good thread.

 

[Sprig]

Bump for Brad and others. A good thread.

^^Agree, and excellent work there Manual Fun to get the kid involved with ya eh!
I learned a lot from this even though I'm a long way from ever doin' a job like this.
Did the results of this project ever get posted?



Serge

 

[SawTroll]

I wish I could find one for a 371XP... I got the repair manual and owners manual fine (the repair manual is for a 362XP-365-371XP) but no joy finding a model specific IPL. Mine is #1997-7440642

Did you find that IPL??

If not, this one should be the right one.

 

[THALL10326]

Nice job, Manual! Was away from the computer all weekend, missed this thread. Appreciate the illustrated how-to big time.

(Insert slam on THALL here)

As Fred Standford would say , you big dummy! You can't slam the man that gave the man the saw in the first place, YOU BIG DUMMY,:hmm3grin2orange: :hmm3grin2orange:

 

[J.Walker]

Thall's 262xp Rebuild

This could be the thread of the year. What do you guys think? It's got my vote.

 

[Cut4fun]

I just wish Ole Manny would have gave us a after video to watch.

Hey by the way, where is Ole Manny? :help:

Hope your family had a Merry Christmas.

 

[SawTroll]

This could be the thread of the year. What do you guys think? It's got my vote.

It no dolt is - my vote is here as well!!!! :rockn: :rockn: :rockn: :rockn:

 

[Cut4fun]

It no dolt is - my vote is here as well!!!! :rockn:

It no doubt is - my vote is here as well!!!! :rockn:

I changed a word a tad ST in your post. Guess that will get me jail time. :hmm3grin2orange:

Because dolt in our language means this. dolt = a stupid person

 

[SawTroll]

I changed a word a tad ST in your post. Guess that will get me jail time. :hmm3grin2orange:

Because dolt in our language means this. dolt = a stupid person

I thought it was THALL language, and wanted to see if anyone reacted - I guess someone did.....:hmm3grin2orange: :hmm3grin2orange:

 

[THALL10326]

I thought it was THALL language, and wanted to see if anyone reacted - I guess someone did.....:hmm3grin2orange: :hmm3grin2orange:

Hmmmmmmmmmmmm hey wait a dayummmmmmm minute. Are you saying I talks kinda funny, grrrrrrrrrrrrrrrrrrrr. Just cause its Christmas old man don't think I won't a hop in the Lisa Marie and come over there and give you a hide tanning like you aint never seen. Now say ya sorry and I'll tell the boys to turn them jet engines off,:hmm3grin2orange: :hmm3grin2orange:

 

[SawTroll]

Hmmmmmmmmmmmm hey wait a dayummmmmmm minute. Are you saying I talks kinda funny, grrrrrrrrrrrrrrrrrrrr. Just cause its Christmas old man don't think I won't a hop in the Lisa Marie and come over there and give you a hide tanning like you aint never seen. Now say ya sorry and I'll tell the boys to turn them jet engines off,:hmm3grin2orange: :hmm3grin2orange:

Like when your F-16 was shot down - I hope I don't have to call in the M109G3N battery again - the guys are kinda old and tired, it is 15 years since we had an exercise - except when you tried to invade us with those fake saws......:hmm3grin2orange: :hmm3grin2orange:

 

[chowdozer]

Thanks tom,
I installed a windsor 16" bar and I'm sure you noticed the Stihl chain.
This baby has no hesitation from Idle to WOT. it's there and it's now.
I'm going out to the property and sink it in some wood today.

Are you ready to race an 034 now?

 

[Cut4fun]

DOLT= also means slow thinking person. :hmm3grin2orange:

 

[manual]

This is a suprise

I just wish Ole Manny would have gave us a after video to watch.

Hey by the way, where is Ole Manny? :help:

Hope your family had a Merry Christmas.

Well her I am just drinking a cup of joe, And winding down from Christmas day.

Merry Christmas to All here on A.S.

Sorry cut I don't have a way to video that saw for ya.
I will say It is one of my favorite saws to run. Right now I am using it for my square cut filing efforts. Whitch I am learning here on A.S.