Posted: January 10th, 2012, 8:24 pm
Like I said.... Lots of oil (32:1).... run it.
BannedCR500Riders.com
Addressing the survival of the legendary CR500!
https://www.bannedcr500riders.com/
My 89 engine needs rebuilt.....
Page 3 of 3
Posted: January 11th, 2012, 6:51 am
Dude that thing is CHERRY!!! Now stop stressin!! On the crank and pay attention to da top end !!!!
Posted: January 11th, 2012, 11:00 am
What was the original failure, seized I presume?
Did you get a read on why the original failure happened?
btw-No offense but you seem really worried about the rod.
I would run it as is but maybe you need to get some peace of mind and rebuild the crank.
Did you get a read on why the original failure happened?
btw-No offense but you seem really worried about the rod.
I would run it as is but maybe you need to get some peace of mind and rebuild the crank.
Posted: January 11th, 2012, 12:40 pm
Yeah it got hot and seized. I was cruising down a dirt road. All of a sudden it bogged down and lost power and shut down. Rear wheel did not lock up.
The head nuts were barely more than hand tight when i tore it down. Hardly took any pressure to loosen with a wrench. Somehow they came loose and it started burning water and/or sucking air. Or it got so hot some other way that they came loose or things warped. Not really sure. I need to check for warpage but ive been busy lately.
The only reason i was woried about the rod is because of the specs. I figured a picture may help but apparently honda specs mean nothing. I guess i shouldnt ever check the specs on anything anymore right?
The head nuts were barely more than hand tight when i tore it down. Hardly took any pressure to loosen with a wrench. Somehow they came loose and it started burning water and/or sucking air. Or it got so hot some other way that they came loose or things warped. Not really sure. I need to check for warpage but ive been busy lately.
The only reason i was woried about the rod is because of the specs. I figured a picture may help but apparently honda specs mean nothing. I guess i shouldnt ever check the specs on anything anymore right?
Posted: January 11th, 2012, 1:50 pm
Some shit you can fudge on... rod side clearence is one of them.
Posted: January 12th, 2012, 2:44 am
Naw man, I know what it's like.
I do the same thing sometimes, just for peace of mind.
I'm waiting to put my top end back on because I don't know how old the crank bearings are on my '85.
I'm doing it up with paint and all so if I take it apart to replace those it will probably be a loooong time before it comes apart again.
I think it's kinda an anxiety thing
Like Bob said, you can fudge some things but if it bothers you, do something about it.
One of my things is, I ALWAYS change out the piston pin, bearing and clips when I do a top end. Just a weird thing I do for peace of mind.
Another, I ALWAYS replace the top end on a bike I know nothing about, specially a 500.
My piston was good in the '85 but, I replaced it for peace of mind.
Peace of mind is worth more than the cost of the repair to me.
I do the same thing sometimes, just for peace of mind.
I'm waiting to put my top end back on because I don't know how old the crank bearings are on my '85.
I'm doing it up with paint and all so if I take it apart to replace those it will probably be a loooong time before it comes apart again.
I think it's kinda an anxiety thing
Like Bob said, you can fudge some things but if it bothers you, do something about it.
One of my things is, I ALWAYS change out the piston pin, bearing and clips when I do a top end. Just a weird thing I do for peace of mind.
Another, I ALWAYS replace the top end on a bike I know nothing about, specially a 500.
My piston was good in the '85 but, I replaced it for peace of mind.
Peace of mind is worth more than the cost of the repair to me.
Posted: January 12th, 2012, 11:49 am
X2Peace of mind is worth more than the cost of the repair to me
thats why i rebuilt my bottom end twice when it was still in spec
also if the rod does bend, snap and take the cases out its gonna cost a lot more, and downtime sucks
Posted: January 30th, 2012, 6:00 pm
Ouch! What do I do with the cases? Looks like the rod got into them maybe? Other half is the same way
DAMN!!
DAMN!!
Posted: January 30th, 2012, 7:02 pm
Stroker Motor 
Posted: January 31st, 2012, 5:45 am
Usually if they're pushed out like that they'll also have a crack and run lean. I'd check them very close.
I surface the cases if needed, ones that have that damage almost always do, the edge rolled back leaves it high by a bit and it won't seal everywhere.
I surface the cases if needed, ones that have that damage almost always do, the edge rolled back leaves it high by a bit and it won't seal everywhere.
Posted: January 31st, 2012, 7:20 am
well that doesn't sound good....
Is there a way to fix them? What if I find no cracks?
Is there a way to fix them? What if I find no cracks?
Posted: January 31st, 2012, 8:40 am
Doppler wrote:well that doesn't sound good....
Is there a way to fix them? What if I find no cracks?
I think Roostius was saying that if there are no cracks he can clean up the mating surfaces to make them seal properly.
Posted: January 31st, 2012, 9:17 am
You can surface them flat !!
If they have cracks you can weld them up and surface them!!
I've done two cases like that with cracks and no problems!!!
If they have cracks you can weld them up and surface them!!
I've done two cases like that with cracks and no problems!!!
Posted: January 31st, 2012, 9:22 am
weld em up!
I've bought cases that shit the rod out and were missing a square inch, you'd never know it now
I've bought cases that shit the rod out and were missing a square inch, you'd never know it now
Posted: January 31st, 2012, 10:17 am
You can surface them flat !!
If they have cracks you can weld them up and surface them!!
I've done two cases like that with cracks and no problems!!!
If they have cracks you can weld them up and surface them!!
I've done two cases like that with cracks and no problems!!!
Posted: January 31st, 2012, 11:08 pm
Yeh boB ... my mums a hooker! 