Thanks for the reply going to have it booked in for a leakdowntest and compression tested sorry to ask another question but do you know roughly what the compression should be thanks
What effect would worn crank seals have on an 83 yz mine sputters and back fires when warm videos on my page also do the engine need splitting to replace them
Sounds like you need new crank seals, you are getting a air leak. The left side can be changed with out splitting the cases but the right(clutch side) will be hard to get out. You might be able to pull it out with a pick, make sure not to scratch the case. On the left side make a small hole in the seal and thread a screw into it and pull it out.
I see this all the time. Guys hammering in bearings like that if you heat the case hot enough that bearing well just drop right in plus if you properly drop it in without hammering on it you'll know it's good and seated rather than relying on excessive force to seat it which could damage the bearing resulting in a shorter life span. More heat and and infrared temp gauge to roughly 320°f and the bearing in the freezer for about 20 min is all you need.
I knew the '82 - '85 use alot of the same parts. Had an '83 when I was a kid.
I'm only seeing 2 and 3 brotha
After that how u put crankshaft in
Thanks for the reply going to have it booked in for a leakdowntest and compression tested sorry to ask another question but do you know roughly what the compression should be thanks
I used Dupil Color semi gloss black engine paint. I glass beaded the cases first, no varnish.
I have a 1986 yz 80 and it needs a top and bottom rebuild but I can't find anything online ??
hola amigo que tal tengo un yz igual pero me falta el eje de la pata de prender ,tu lo tendras .
What effect would worn crank seals have on an 83 yz mine sputters and back fires when warm videos on my page also do the engine need splitting to replace them
Sounds like you need new crank seals, you are getting a air leak. The left side can be changed with out splitting the cases but the right(clutch side) will be hard to get out. You might be able to pull it out with a pick, make sure not to scratch the case. On the left side make a small hole in the seal and thread a screw into it and pull it out.
Ga usah dibakar...kalo diketok" juga mah leee
I'm restoring a 82 yz80 myself.Did you know that most parts will interchange between 82 to92?
Wheres part one I'm in the midst of rebuilding my bike part one please
It's here, check my other videos.
may i ask.. why do you use open flame,. but still hammer it in? and by the way.. open flame near flammable materials? no offense thanks
troll much?
sorry
my bad
I always prefers to use a hydraulic press rather than 🔨...
I see this all the time. Guys hammering in bearings like that if you heat the case hot enough that bearing well just drop right in plus if you properly drop it in without hammering on it you'll know it's good and seated rather than relying on excessive force to seat it which could damage the bearing resulting in a shorter life span. More heat and and infrared temp gauge to roughly 320°f and the bearing in the freezer for about 20 min is all you need.