Thanks for the tips TZ350. I already know the blades are safe as I'm 200 miles run in now on the new engine. But I was told on RGV.co.uk forum that the important part of the pv's is the blend point. I think it's about as close as it can get anyhoo.
Well, major progress made, it was the chuffin spark plug!!!!
Unbelievable, a BRAND NEW spark plug I had in there since engine rebuild, exactly as standard, NGK BR9ES, and the whole time it's been a dud. I swapped it back for the old one that came with the bike and hello rocketship!! No more splutter, screams round to 12 (then hits a brick wall) and even ironed out a few flat spots. How can a brand new plug be a dud? I got it off ebay but still. Over 6 months ago now I can't even trace where it came from.
But sadly bad news. Went out on it tonight still with the 180 MJ but realised to replace the airbox lid first, cruised about 20 miles out of town with two mates, was giving it way more on the way to a pub meal than what I was on the way back, however just appraoching 5 miles from home it pretty much blew up....or something, I thought heat seized. It died mid thrash, the first beans I'd given it for the past 20 mins so it wasn't currently hot, temp gauge hadn't gone past 1/4 all night either, and I thought i was going on to reserves. But I'd put a tenna in it there's no way it's used that!! It kept running for a bit gradually slowing to a halt then I noticed it was 4/5ths up the temp gauge. Let it cool and tried to start but there's no compression, engine turning over real fast like it does with no spark plug in it. Hoping it was just a too lean MJ and it's holed piston, cuz if it's anything else like rings or exhaust bridge issue then I can't be doing another replate and not know wtf it did this for.
Running too lean doesn't bugger rings does it? There was no clattering around from the engine, just a gradual dying as if it was heat seizing but like I say now no compression. Knew I should've done a friggin plug chop before venturing out..but at the same time all the caburation below thrash range has needed leaning off big time, needle max lean and still struggles to tickover so a leaner pilot required. Can a Nikkon or any aftermarket spanny cause this change? Where bottom range needs leaning but top range needs richening? Bizarre...
Had an absolute calamity being recovered, had to call a half cut mate out and he brought a 7 seater that we pulled every muscle squeezing the bike into the back of. Fun fucking times these 2-strokes eh
Bookmarks