Rare Scottish Tree Badger

That's a surprize. ... I was expecting to hear that a cold test produced a higher compression on account of the air not being heated by the hot internals . I guess the heat doesn't have time to effect the air while cranking, and the expanded piston/rings and reduced (warm) piston to bore clearance raises the compression. Hmmmmmm. Rare.

Happy Birthday! Rare.

That's the clearance that needs to be figured in for boring, not your piston size. ... If you're looking on the box, then it's the last four numbers on the above line. eg: 513M06500 are 65mm pistons (6500). Rare.

A couple of things to try. ... 1/ Another spark plug (or swap them over) - Even though you checked for spark and saw it, when exposed to the pressure in the cylinder it may not fire if it's faulty. 2/ If it's not the above, then it must be fuel or fuel/air related due to all the possibilities that you've ruled out. I would swap the carbs and run a long piece of hose to replace the choke hose or just plug the choke holes if poss. to see if it swaps over then. Must be a carb issue. ... Is the cable working the slide? The only other thing I could suggest is a leakdown test if none of the above provide any results. Rare.

What kind of difference would you expect to see in cylinder compression when doing the test cold as opposed to doing it on a fully warmed up bike? My example: I only managed one test before I burnt down, and that was a hot test done at about 60F (15 degrees C). I recorded 148psi. Rare.

You're ok to try swapping them over. ... Sounds like an air leak or lack of compression. EDIT: You say you tried switching the plugs. ... Did you try switching the leads also? If the 'no run' changes cylinders with this swap, then it's a fault in your HT lead or plug cap. Rare.

Certainly did! My sister says "No, you're not having sex with me to get your percentage up" ... And my mum just hit me! (j/k). Rare.

I had much the same trouble when I first got my bike. ... Temps were then around 10 degrees C. All I did was clean up the contacts on the flywheel and pickup coil, then set the gap to 0.018" and it would start first kick every time with choke on the first notch. Now that the temps are up, I've not needed to use the choke to start. (That's from 20 - 28 degrees C). My pilots are 25s and the air screws are 1 1/4 turns out. ... I've got porting and a milled head with 150psi compression (600ft above). So with your stock setup, with 25 pilots, you're more likely to be in the 1 1/2 to 2 turns out with the air screws. Rare.

1.6 U.S. qt. (1.5 liters) for a regular oil change and 1.8 qt. (1.7 liters) after a rebuild. Rare.

That's what was done on mine when I got it, and it stayed like for 6 months without leaking. ... To be honest, I didn't know what the silicone was there for until I got some busted RZ cases, and then I just put a plug in from them. I agree it's , but it's a temporary fix that works. Rare.

Yeah! 'cos I got 56.96% too, and I'm a perv! Rare.

Silicone will be fine for now. ... You're not going to damage anything. Just make sure it's really dry so you get a good seal. Rare.

Yip, that's all it was. ... Re-seal it and you're done. Rare.

Yip, just a plug. Sounds like you don't need to dig the old plug out. ... It's gone! ... That's the shift fork shaft that you can see. I guess you could order one from a dealer or get someone to take one out of a busted case. Mine was missing aswell and was just plugged up with silicone. ... The shaft can't come out that side 'cos there's a circlip on the shaft just inside the case (p184 ). Rare.

It's a plug for one of the shift fork shafts. ... The shaft comes out the other side, so just get that cleaned up and dried and get some kind of sealer onto it. In time, get yourself another plug, 'dig' that one out and put the replacement in with a touch of sealer around the outside. I replaced my one recently. ... I had some RZ cases apart and with the shift shafts out, so it was easy just to knock the plug out from the inside. bfs got his Clymer. Rare.

I don't claim to be an expert, but I'd say the second shop was pretty close. 95psi compression is pretty close to a no run bike. ... You need to find out why. Is it due a new top end? (Or at least rings. ... Time to have a look). Rare.

State wheather the overflow bottle is still used (behind the airbox/ relocated), or or if it's been done away with. Rare.

I don't doubt it. ... I've only gone into detail about the air as you asked "what's that for?" about your altitude. ... It's allway's good to know what your compression is at as a reference for the future. As others have pointed out, your problem is likely to be jetting or an air leak. But jetting at sea level is very different to jetting at 5000 ft above, which is why you needed to state your elevation. It might also be a reed problem that only shows up at low RPMs. ... The compression test might show that one up. Another point about the air is that it also gets thinner as it warms up. ... Just to confuse you more! Rare.

At your altitude (1000 ft) on a fresh bore you'd be looking at around 125psi. Don't pay too much attention to the actual figure that you come up with unless it's much lower, but what you don't want to see is a difference in compression between the two cylinders of more than about 10%. Rare.

That came about when Joseph Day came to the bar, 10 years later. Rare.

The cable attaches to the clutch push lever on the top of the case. There's a pointer on the end of it. ... If you push that towards the cable with your finger, it should go tight when it lines up with another arrow that's cast into the top case. If they don't line up, then you need to make an adjustment inside the clutch cover. Rare. *

The air gets less dense (thinner) as you rise above sea level. Example: A stock bike with fresh bores will have around 130psi of compression at sea level, but take that bike up to 4000ft and the compression drops to around 105psi. It's because of the thinning air, that the higher you climb above sea level, the less fuel you need to keep the combustion mixture correct. Rare.

I hadn't. .... . Rare.

Brilliant! Rare.