the -71- T500

[m in sc]

so, aside from the 72, I also have a 71t500. tgis ones going to stay stock. was supposed to be relatively sorted.. it wasn't. lots of little things wrong.. mismatched carbs, a weird cutout on the lh sidecover, and worst, a blown crank seal on the rh cyl. could be inner or outer but it pukes oil like crazy (see video)

. so, I bought a parts bike that had previously unbeknownst to me, had bern on fire, but supposedly had a fresh engine. it also was pretty fucked up overall so not many spares.  today, I got the motor to run on the spare,  but here's pics of both, and a video of the parts bike being fired off, as minimally as possible.  Pink ones the 71. the parts bike has a welded over vin ... so its going to dissappear

[m in sc]

so on to the 71500. one of those the deeper ypu look the more you find.anyway,, I need to pull the motor and replace the crank with a rebuilt one i got a few days ago. resell motor, etc. that being said, these are some of the nice little surprises.  whoever had it did a rattle can overhaul. and juat butchered some simple stuff but def saveable. and the usual found sae hardware.. here we go. ...

[Kawtriplefreak]

I'm glad the parts bike runs...

[m in sc]

true.  they both do and both need inner crank seals. 

[m in sc]

and the topend is... hacked. wow this was bad.
rh piston hitting head, .5 os, lh stock. check the almost blown out done. akso.. clear silicone under the head gaskets. stripped rear shock mount (fixed) and a myriad of fuckery.      

[SoCal250]

A scotch lock! Your favorite! 

[Kawtriplefreak]

Needs pink wirenuts. He likes them even better...

[m in sc]

so the parts bike, whilst on stock bore also has issues.  which is fine, these are off-to get bored and new pistons.  check the lh piston. about half the intake skirt missing     

[RDnuTZ]

did you find the missing piece of the skirt?

[m in sc]

nope.  not in the motor. Who knows.

either way , the bottom end of the original motor is coming apart, and all new stuff going in where needed. clutch, bearings, etc. I even have a spare transmission w a good 5th gear ready if need be. I was hoping I wouldn't have to get too deep into the motor on this but, alas... I was kidding myself.  lol

ill pull the cases this week see what I find in there.

considering the parts motors cylinders are at least the same bore and stock size,,ill take those to my guy to measure and bore.
in the meantime ill just get down on the details

[RDnuTZ]

occasionally over the years when I find a broken/missing ring, pin clip, etc. It is just gone- not in the lower end or in squish area- gone. I can only assume it went out the exhaust port and feel lucky.

[m in sc]

im sure its launched out the pipe at a previous date by the last guy that had this . there was no baffle in the pipe so maybe its lodged in some cars radiator somewhere 

[mnein]

Whenever I have a broken or missing ring/pin clip they either imbed in the piston or get trapped halfway out the exhaust port.

[m in sc]

the baffle was missing out of that pipe, looks like it was run that way for a while  so who knows.  im not saving much off this (parts) bike except the motor and some hardware,  its roached pretty bad. the frame had the vin welded over ( SKETCHY AF) years ago. so thats going in a dumpster in peices, unless somebody wants a rolling chassis for free and come get it

[m in sc]

got the tires put on the rims today. had new wheel bearings on hand,  waiting for the fork seals. the wheels cleaned up well, and I had a backing plate with new shoes for the front wheel off my 72 from when I swapped it to a disc. all typical stuff but coming along well. the cyls off the parts  bike is going to my cyl guy Saturday to get assessed and  measured.  in the meantime ill tear into the bottom end to find new horrors     some pics from today. 

whenever I do this type of fix up, I think k of the 'barn find' crowd and wonder how they can just get these running and just ride em. look at that wheel bearing and delaminatedbrake shoe