TOPIC:

See that's what happens when you get that 2:am hankerin' to rebuild a motor and set a new record for a rebuild in under a 1/2 an hour:P

Just buggin' with ya:silly:

Glad you found the problem!!!

Got the whole thing back together last night, 14 minutes 23 seconds, kidding. Started at 6:45 and fired her up at about 9:35, mit headers but sans mufflers. Sounded real nyyse. A touch of smoke still coming from #4 but I didn't run it long and suspect it's going to be burning off the oil residue in the EX port and header for a few miles.

Will balance the carbs again in the next couple of days and hopefully get her out on the road on Saturday.

Got some #15 pilots on the way from Jeff (Z1) so I might just drop the old 26's back on whilst I dick around a bit more with the 28's.

Thanks again everyone's help with this.

BARNEYHYPHEN wrote:

Got the whole thing back together last night, 14 minutes 23 seconds

HaH i knew it:laugh:

Now it really is oil residue burning:P

Ok, now you should enjoy trouble free wind enjoying gas saving fun from now on

Post edited by: rammy, at: 2006/04/28 09:58

Not out of the woods yet!

Took her out last night and she did NOT want to light up on #4. New plug inserted and #4 lit for maybe 15-20 seconds at idle then #4 died again. Plug removed, very "wet" but look like gas not oil? Tried again with another new plug and same thing happened?

At 60mph, running on 3 pots, #4 would cough every 1/4 mile or so. I think this may have been the gas/air passing through to the exhaust and ignighting there?

When idling, after #4 had died, I pulled the #4 plug cap off the plug by about 1/2" and the spark was very healthily jumping, inside the cap, from the cap to the top of the plug. This gives me the impression that a spark is available but is obviously not happening in the chamber for some reason?

Blockage in #4, Way too rich, not enough air?

Any ideas?

UPDATE, Head off last night and this is what I found.

Both IN & EX valve seals in place and look to be in perfect shape. Both are providing the expected "drag" on the valve stems so have to assume they are sealing as they should.

Very little "wobble" (less than 1mm side to side at valve head) on either valve, with valve stems pulled out so end of stem (small end) is flush with the top of the valve. So, assume guides to be good.

Inside portion of IN valve very clean but inside portion of EX valve, lots of carbon.

I will try to post pics.

Guess what I just found.....

Broken oil ring on #4 AND, by the looks of it, it's been broken since it first went in. No apparent cylinder damage.

Now to put it back together.....

All back together. Took her out Saturday night for half an hour and she's running like a top. NO MORE SMOKE. I'll try to post a picture of the broken ring.

pretty much snapped in the middle and most definately when I was trying to get the #4 piston in the pot. Shiny for about 0.25" each side of the break and about 1.50"on the gap end of each half. No apparent cylinder damage.

I had also put the center ring on upside down! Replaced all three rings on #4 on Saturday morning.

Well congrats on your find BARNEYH.Glad you found your problem.Been to dam wet and rainy here to even think of going out for a ride.Congrats again

Sorry, try again...

congrats on getting it all back together!

Thanks everyone for all the help.