Cam-swap/engine won't start

Update: Rear cyl now fires happily. Moving onto the front.

well i have a pointy but i think i get the drift, so how come you did it if there is not much efect

Must be the same reason people pick the sv as a race bike lol, craziness. Its a shame we cant put a proper engine in the sv, 180bhp naked pointy lol

Originally Posted by Neeja

Dude...I'd sell my grandmother for an extra 1.5bhp.

haha lmao :P

Now finished, back together and running. Will test tomorrow on the way to work, and hope nothing goes bang

Well, nothing went bang.

Gained nothing top-end, really (expected), but it feels quite a bit more lively lower down. Seems to pull harder from 4-7krpm, so there's much less of a jump as it hits 7k.

The bad, though: Bike doesn't seem to want to idle nicely - idling very high and erratically, and even putting the choke on full left it at under 3k (when it normally jumps to 3k with full choke from cold). Also got into work to discover my left boot had a spraying of oil on it. I'm assuming that one of the breather hoses wasn't on the airbox properly and it's come from that...but can't get out to check till later this afternoon. Bugger.

On the upside, it didn't go bang.

[yorkie_chris]

You've got an air leak by the sounds of it. Check you put carbs back on right. Sounds to me like you didn't put airbox back right especially since one of breathers popped off too.

I had a look at lunch-time and it's not the breathers. I'm actually wondering if it's just oil on the radiator - it got fairly covered last night (had it hanging down under the front cyl while working on it, and there was a bit of spray when starting the engine the first time due to me leaving the cover off). There's a few small drops of oil under it at the moment, but nothing major. I'm thinking that oil got into the rad and as it's warmed up this morning it's dribbled out, as there was nothing leaking last night when I had it running for 2-3 mins.

The air-leak sounds likely...it was about 1:30am when I was putting the air-box back on, although the carbs never came off the bike. Thinking i might not have put them back onto the front carb properly in my haste for bed

Slightly worse than I thought.

Rear cylinder is down on compression because it's leaking through the top cover at the rear. Spraying a fine mist of oil and can feel it blowing.

Think the rear screw thread has stripped.

[yorkie_chris]

Top cover won't lose you compression. Just a little oil.

*ignore*

Bike has now started working on both cyls again. Rear one only fires intermittantly at idle, and idles low, so probably carbs need balancing given that they've not been done in 12k miles...