Help Find A Cure for Crazcnuk's bike?

[dbeardslee]

Hey Craz - Glad to hear your getting back on the horse that almost threw you . Saw a set of carbs on e-bay (look like special carbs). As of this moment the current bid is $28 for the complete set. Here's a link - http://cgi.ebay.com/ebaymotors/Parts...3A1|240%3A1318 Auction is only running for another day and a few hours.

[skids]

If the oil consumption is high, carb adjustment is not going to cure that. But then you might have two problems there...

[Crazcnuk]

Put these carbs onto the special today. They work awesome so far as power is concerned.

Will have to wait and see what the fuel economy is like.

But, unlike the std, there was no bog, no sputter, no problem revving past 5000 in all gears. Therefore the problem has to be in the engine itself.

All I have to do is cut the timing chain, and undo the header pipes and the head is ready to come off and we will see what the heck is going on in there.

[Crazcnuk]

Took the head off, and it doesn't look like any of the valves are bent?!? It had spun nearly 180deg out of time, yet none of the valves apear to be hanging open.

There is a lot of carbon on the pistons and the head/valves.

I took the barrels off as well, and the compression rings look ok, but the oil rings look to be stuck in the pistons. I didn't have time to get a good look, but it's possible all the oil was coming past the pistons.

[Crazcnuk]

Ok, may have solved the oil consumption mystery.

On all 4 cylinders the ring gaps of the compression rings were together, and on the one I checked the ring end gap was over .080!

I would say these rings are very worn out, or wrong all together. It would have been putting a huge amount of the compression on the oil rings.

I hope to have it all together with the 1200cc motor by the end of the week.

[Crazcnuk]

With these carbs on a different bike (80SG), first 200km+ run, I was getting 43mpg mostly highway at 120kph, with a little in town.

[dbeardslee]

Hey Craz - way to stick with it! 43mpg sounds excellent. I'm glad it's working out - you definitely put in the effort!

[Crazcnuk]

Well, so far the carbs work. Still working on the rest.

We just were not sure whether the issue was carb related or something else.

[Crazcnuk]

Hit 50mpg last week with the SG.

Got the G running today, with new rings, head, etc. Have a valve cover leak to get rid of and the cam chain tensioner os drooling, but nothing major.

[thewiz]

Easy there, sport

cam chain tensioner os drooling, but nothing major.
__________________

Just goofin' .... but it's good to keep caution in mind on this operation, right, bro'? .... at least you will have another good reason to have the cam cover off at the same time. Glad you've got it goin' again too, good work !!

[Crazcnuk]

Don't think that I am not nervous everytime I get near the tensioner!

I am probably going to have to make a gasket out of a cereal box.

I am probably not in any danger, at this point, because the chain is brand new. It doesn't have much slack in it yet.

[drooker56]

I am still learning hear but no one has mentioned your ignition box. I know they are kind of pricey on ebay but maybe somone around here has one.

[Crazcnuk]

Took her out for a few laps around the block today. It's running nice, at least up to about 40mph.

I have a nasty oil leak underneath, somewhere, either the pan (which has never been off) or from the oil filter housing.

I've added running boards, which make the controls a bit odd, have to get used to them.

I set the carbs up the same as the other set, except for the improved neddle/tubes. 120 mains, 42 pilots.Floats at 23mm, plasti-dipped diaphragms. Carb #1 only has about 1 turn adjustment range on the idle mix screw.

[dbeardslee]

Craz - When I first got Betsy I thought she had a leaking pan gasket that wound up being a bad o-ring on the straight plug under the timing cover. If you've got a sludge build-up directly under the plug it may be your culpret. If you do replace the o-ring be careful on the reinstall and don't over-torque it. It's made out of potmetal and snaps in two rather easily. DAMHIK

[Crazcnuk]

I have sludge all over, under there, but the only place it had a drip, last year, was from the tensioner.

I rebuilt the top end, but didn't touch the bottom, but now it is dripping from the front and rear of the pan.

I will have to pressure wash it off and then keep an eye on it to find out exactly where it is leaking from.