Author Topic: XL250S rebuild (Read 6546 times)

scunny · « **on:** June 30, 2007, 06:55:56 PM »

the subject of my dismay 1979 XL250S ..yes I know I should be finishing the 650.
this bolt is stuck, I may not have a hammer big enough to deal with this sucker.
someone please remove it before I #1 go stark raving mad
#2 go to pub

scunny · « **Reply #1 on:** June 30, 2007, 07:38:23 PM »

well the bolt has won for now. so as no harm is done I am flying the white flag for today
choice #2 has taken on the preferred option status

nickjtc · « **Reply #2 on:** July 01, 2007, 07:19:16 AM »

See this, Rule 5.

http://www.sohc4.us/forums/index.php?topic=23379.0

scunny · « **Reply #3 on:** July 17, 2007, 11:53:49 AM »

victory is mine.
after much staring and poking I cut the sucker either side of the swingarm. it turns out I had no hope of drifting this bolt out, the PO had built up the collar with weld, warping it in the process then bashed the bolt thru with a very large persuader

scunny · « **Reply #4 on:** July 20, 2007, 06:35:30 PM »

aaaaaa the joys of an old bike.
today is front fork rebuild time, so the fork seals are going to resist my efforts as usual. the oven is on and they will be heated to 200 degrees in the hope of loosening these suckers.
stay tuned for the next installment hahahahaha I'm going mad

scunny · « **Reply #5 on:** July 20, 2007, 09:46:00 PM »

news flash.....madman removes fork seals after only one jug of beer

nickjtc · « **Reply #6 on:** July 20, 2007, 09:52:24 PM »

Aaaaaaaaaaah, beer. That curer of all that ails us. Or at the very least what helps us to forget...

scunny · « **Reply #7 on:** August 28, 2007, 10:50:55 PM »

well after getting the motor to go(a good start)
new old swing arm bolt, sleeve and bushes made to measure
rebuilt front end
recovered seat(I'm too old to put up with a wet bum)
new header pipes (twin exhaust ports)
new handlebars
cleaned the carby......hehe only one
she starts first kick, idles like a top and goes where I point it. I have given it the first taste of offroad riding and now we are off for a bridge to pub ride this weekend, 1 1/2 hours each way so I hope my trail riding skills haven't diminished with age

Sam Green Racing · « **Reply #8 on:** August 28, 2007, 10:59:18 PM »

Don't forget your rod

Have a safe ride Scun

Sam.

Terry in Australia · « **Reply #9 on:** August 29, 2007, 04:10:10 PM »

Well done Scunny, have a great ride! I was eyeing off a very clean XL500 Honda at my local wreckers yard on the weekend, and also an old MT250 Elsinore with an alloy tank. Ahhhh, better not, I'm too old to go dirt bike riding, ha ha!

Slapguts · « **Reply #10 on:** August 30, 2007, 12:29:47 AM »

Beer. The cause of, and solution to, all of life's problems.

scunny · « **Reply #11 on:** September 08, 2007, 11:39:39 AM »

no fishing rod on this trip Sam, that comes out this morning.
bike and rider handled all tasks thrown at them

I didn't realise how many river crossings there were, but apart from a couple of (moments) in deep sections, all went well

Terry in Australia · « **Reply #12 on:** September 08, 2007, 03:37:06 PM »

Enjoy that fishing Scunny, I hope you don't hook any "blind mullets", ha ha!

scunny · « **Reply #13 on:** September 09, 2007, 11:48:29 AM »

never fear Terry, the only mullet round here is on my head haha
bagged a nice 3 1/2 pound brown trout tho

scunny · « **Reply #14 on:** November 23, 2007, 04:36:39 PM »

here she is, sorry about the slightly used look but its all hard earned battle scars

Terry in Australia · « **Reply #15 on:** November 23, 2007, 04:40:41 PM »

Very nice Scunny, is that your XC Falcon behind it?

scunny · « **Reply #16 on:** January 26, 2008, 04:01:49 PM »

not my falcon Terry, she is a friends sunday car.
well concerned members, on a whim I purchased a 23inch front wheel for the river rocket(this is the stock size) to replace the 21 thats on it. whoever invented the front brake set up was a sadist. I'm no expert but this thing is nuts

scunny · « **Reply #17 on:** April 29, 2010, 07:13:02 PM »

well the time has come to look into the motor. my trusty steed has been burning a lot of oil and has developed that horrible smell of death.
I've got the head off and the piston has 75 beside the inlet valve relief. I thought oversize went to o.5mm. stock bore is 74mm.

scunny · « **Reply #18 on:** April 29, 2010, 07:21:06 PM »

on a side note, does anyone know what piston is used to up these to 280cc ?

scunny · « **Reply #19 on:** April 29, 2010, 09:32:12 PM »

cylinder off, eveything looks good but will have the bore and piston measured by someone less clumsy as me. strange tho, when I pulled the cylinder up I was greeted by that sickly smell from the crankcase. will ponder that one over a beer tonight.
since we all like pics here is one from the last trip

scunny · « **Reply #20 on:** April 30, 2010, 04:10:55 PM »

piston is made by iky pistons japan, i see M3 racing have 75mm pistons, it will be interesting to see what I have

scunny · « **Reply #21 on:** May 03, 2010, 01:03:40 PM »

piston and bore measured and in spec. turns out that a 3rd over .75 was made as an after market option, now the hunt for some rings. might see about getting some made.

scunny · « **Reply #22 on:** May 12, 2010, 10:07:46 PM »

well 3rd oversize off the shelf rings was a no, nothing , zilch.
so your parts detective went to a engine shop in town and they have a set of car rings that will be good to go after a bit of tweaking. $150 bucks and I get 4 sets

scunny · « **Reply #23 on:** May 13, 2010, 10:39:49 PM »

oh my gawd, they are suzuki rings, the shame.

scunny · « **Reply #24 on:** May 22, 2010, 06:41:00 PM »

valves done, gaskets cleaned off all surfaces clear, someone previously used lots of bloody sealant around here, that should be a criminal offence. just have to hone the bore tomorrow then can put her back together again.

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Author Topic: XL250S rebuild (Read 6546 times)