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Thread: Need HELP!! Possable engine rebuild Reply to Thread
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  Topic Review (Newest First)
07-23-2012 07:32 PM
SubSailor
Quote:
Originally Posted by rvtjonny View Post
ok so had a friend come check out the bike over the weekend, the guy worked at a dealership for many years repairing wrecked bikes. He says its not that bad? and offered to help me rebuild the engine using the cases from Ben. My motor turns over, and its smooth(has under 6k btw) and he thinks that it will be fine. I would still need some engine parts(clutch basket, right side cover, clutch cover, oil pan.) all new bearings, bolts and gaskets. and basically have a fresh engine for around 6-700.





Need more info on this...
If you have the service manual (paper or pdf) read through Section 12 (Crankshaft/Piston/Cylinder).
This is a very important section for engine disassembly, especially regarding con-rod/crankshaft/crankcase bearing sizing, gray bolts for the crankcases, and con-rod bolts.
07-23-2012 06:51 PM
rvtjonny ok so had a friend come check out the bike over the weekend, the guy worked at a dealership for many years repairing wrecked bikes. He says its not that bad? and offered to help me rebuild the engine using the cases from Ben. My motor turns over, and its smooth(has under 6k btw) and he thinks that it will be fine. I would still need some engine parts(clutch basket, right side cover, clutch cover, oil pan.) all new bearings, bolts and gaskets. and basically have a fresh engine for around 6-700.



Quote:
Originally Posted by SubSailor View Post
Remember that if you decide to replace the cases, you'll need to match the crankshaft and case numbers to order the correct crankshaft bearings.

Plus you'll have to order the special "gray" bolts as they are one-use only.
They can be used to check bearing clearances with plasti-gauge, but only new ones are allowed for final assembly torque + degree.
Need more info on this...
07-21-2012 11:59 AM
madbuyer Sooooo are you going to buy a new engine....that from the beginning looked like a solid hit. Nice pictures of your exploratory surgery
07-21-2012 11:24 AM
rvtjonny Well, took off some parts and got a closer look. I was hoping to just swap out the lower case but that dont look possible now.... it just keeps getting better




07-19-2012 10:59 PM
SubSailor I did happen to notice the primary gear got a tooth knocked off.
So I'm not sure the crankshaft will be true.

07-18-2012 11:48 PM
b.miller123 With that kind of hit, I wouldn't be suprised to find internal damage as well. Granted there really isn't a lot of stuff directly behind the impact area, but that was a very direct hit.

At least pull the clutch cover, clean all the crap out, drop the pan, pull the plugs and see if it turns over easily by hand and that there aren't any obvious issues before you spend any money.



07-18-2012 10:34 PM
SubSailor
Quote:
Originally Posted by Tlrdynes View Post
Ben at rc51parts.com had cases only for sale on his site. Cheaper than a whole used motor. Worth a look.


Sent from my Motorcycle iPhone app
Remember that if you decide to replace the cases, you'll need to match the crankshaft and case numbers to order the correct crankshaft bearings.

Plus you'll have to order the special "gray" bolts as they are one-use only.
They can be used to check bearing clearances with plasti-gauge, but only new ones are allowed for final assembly torque + degree.
07-18-2012 10:40 AM
1971allchaos RVT-J..
I know it is not much to consoling you. Glad you can walk away from the incident. There is a company in FL. Sun Coast Cycle Sport $1100.00 /free shipping
I have a couple of engines from the group. They seem to be honest with the milage(giver or take a hundred miles or so.)
Hope that this will help.. Ride again, best hopes..
07-17-2012 05:56 AM
MakisRC51 I am really sorry jonny ......

hope you get it running in no time and better this time.

Are you ok physically?
07-17-2012 05:41 AM
rvtjonny Yeah been talking with Ben, thanks guys
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