1985 Motor Rebuild

nmdesertrider · Post by **nmdesertrider** » February 23rd, 2008, 2:56 pm

I got a 85 for 100$ and am considering rebuilding it for use in an AF.
The cases and tranny looks good but the crank has some play.
What are my options for the crank? Will one of the newer ones work? Can I have it rebuilt?

Also, the right clutch cover was cracked from a garage fallover. Will a newer cover fit the 85 cases?

Thanks

bigjay · Post by **bigjay** » February 23rd, 2008, 3:44 pm

from what i understand ( i only just recently learned this myself) the newer cranks will fit but you need a spacer for your cylinder as they are a bit longer, someone who knows more will certainly chime in here.

pstoffers · Post by **pstoffers** » February 23rd, 2008, 3:48 pm

nmdesertrider wrote:I got a 85 for 100$ and am considering rebuilding it for use in an AF.
The cases and tranny looks good but the crank has some play.
What are my options for the crank? Will one of the newer ones work? Can I have it rebuilt?

Also, the right clutch cover was cracked from a garage fallover. Will a newer cover fit the 85 cases?

Thanks

Get a rod kit for it and the 87 case is the one to get all the hoses are the
same and you get the removeable clutch cover.

nmdesertrider · Post by **nmdesertrider** » February 23rd, 2008, 4:05 pm

I don't see any rod kits for an 85. Can anyone recommend a shop to rebuild the crank for me?

ou812 · Post by **ou812** » February 23rd, 2008, 9:01 pm

The rod kit will be for a 89 to 2001 thats why you will also need the spacer plate that goes under the barrel, because this is a longer rod then the now discontinude 85-86 rod. Also your case that is on your motor does not have a removeable cover to get to the clutch, you want this so get one off a 87 to 89. You will most likely need it any how as the area around your water pump will be rotted out.

nmdesertrider · Post by **nmdesertrider** » February 24th, 2008, 6:28 am

I checked on bikebandit and it appears that the rod parts are still available. If i can't get them where do you get the spacer from?
thanks for your help

torino460d · Post by **torino460d** » March 2nd, 2008, 6:06 pm

You can get the spacer from Cometic.

pstoffers · Post by **pstoffers** » March 2nd, 2008, 7:52 pm

http://www.bikebandit.com/houseofmotorc ... 85/o/m9671

redrocket190 · Post by **redrocket190** » March 2nd, 2008, 9:07 pm

http://www.racerstoystore.com

dannygraves · Post by **dannygraves** » March 3rd, 2008, 7:03 am

I used a '90+ side cover on my '86. it made hose routing for the jug in an AF easier, added capacity and allowed me to use the newer style clutch. Plus its not magnesium like the '88 and older ones.
You can get a rod kit for it, but make sure the crank fits tight in the main bearings first, if it doesn't fit tight in the bearings, you should just get a new crank.
if you get a new crank, you can use the long rod ones with the spacer from cometic. I have the part number from them somewhere, let me know if you need it.
double check the tranny well, those I believe had 3 dogs instead of 4 (starting in '86) if the trans is beat, pickup a full assembly from a '86 or '87 and you will get a stornger trans and can use the newer clutch basket.

pstoffers · Post by **pstoffers** » March 3rd, 2008, 7:15 am

85 had 2 dogs 86 on have 3 dogs

dannygraves · Post by **dannygraves** » March 3rd, 2008, 7:16 am

pstoffers wrote:85 had 2 dogs 86 on have 3 dogs

ah, thats what it was! couldn't remember for sure.

dannygraves · Post by **dannygraves** » March 3rd, 2008, 7:20 am

yeah, either way, the '86-'87 trannys are stronger... and deals like this are happening all the time..
http://cgi.ebay.com/ebaymotors/ws/eBayI ... OTORS:1123

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1985 Motor Rebuild

1985 Motor Rebuild

Re: 1985 Motor Rebuild