Dead DR350

**yafeetup** · 7th November 2010, 10:54

While riding with a friend his 1998 dr 350 died suddenly, no real noise or smoke it now has no compression.
Am going to strip the engine down this week, any pointers as to possible cause and are there any pit falls to look out for while pulling the motor apart, cant find a manual at this stage

**bogan** · 7th November 2010, 11:15

had that on a two stroke once, a crank bearing had blown apart and one of the balls made its way into the bore. Obviously thats not likely to happen on a 4T but something else may have been sucked in there. Mind you, its far more likely to be a valve issue, take off tappet cover and blow air in through the spark plug hole, see if it come out the exhaust or intake. Rotate it to TDC compression stroke first.

**JATZ** · 7th November 2010, 13:05

Originally Posted by yafeetup

While riding with a friend his 1998 dr 350 died suddenly, no real noise or smoke it now has no compression.
Am going to strip the engine down this week, any pointers as to possible cause and are there any pit falls to look out for while pulling the motor apart, cant find a manual at this stage

It's obviously totally phucked

I'll give ya mate 50 bucks for it

....... wouldn't do it for anyone else

but if you really want to strip it down......
http://thisoldtractor.com/gtbender/d...rkshop_manuals
77238 kb's 394 pages

**thepom** · 7th November 2010, 15:33

Nice one jatz,piss take but with info too.....

**yafeetup** · 10th November 2010, 19:59

Originally Posted by JATZ

It's obviously totally phucked

I'll give ya mate 50 bucks for it

....... wouldn't do it for anyone else

but if you really want to strip it down......
http://thisoldtractor.com/gtbender/d...rkshop_manuals
77238 kb's 394 pages

thanks for the manual info might wing the sale if you throw a bottle of JDs in there for me and I will over inflate the rebuild cost lol. Told him to sell it and by an orange 1 before he had to buy a coffin, to late now

**yafeetup** · 20th November 2010, 05:53

valve issue somehow a curclip by the look of the remains got into the induction and jammed the inlet, One good thing about mid performace bikes, no internal damage valves sealing good only issue one head stud picked up the tread [bugger],nice easy bike to work on. It will live again hard to kill a dog rooter