Vintage and Classic Hondas

1982 Cam Chain

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markalward

1982 Cam Chain

I am helping a friend with his bike. A 1982, DOHC, he is concerned about the rattle in the timing chain, about 65000 Km. Can this be tightened, or does it need to be. Is the rattle part of the beast. Should the chain be replaced?
Thanks

sgtslag

Re: 1982 Cam Chain

It should have two bolts, one in front, one in back, that should be loosened, then tightened, to automatically adjust the timing chain tension. Check the manual, available on the home page of this sight, for instructions on how to adjust this.

Adjustment is critical, and it is routine maintenance. If it is ignored, major engine damage can result. As far as changing it goes, I could not advise you on that. Cheers!

1979 CB750K (sold, 2012, but not forgotten)
1983 Kawasaki 440 LTD Belt Drive (sold, 2011)
1993 Kawasaki Voyager XII

markalward

Re: 1982 Cam Chain

Thanks, after I posted I checked the manual and learned that adjustment. I found out he already did it. I am thinking syncronizing the carbs is a good idea. The bike starts and runs on two cylinders for while, then the other two kick in, then you take the choke off.

Thanks again for your post.

LukeM

Re: 1982 Cam Chain

Administrator

In reply to this post by sgtslag

There are two adjustments: one for the crank to cam chain and the other for the between the 2 cams chain.the procedure in the fsm details this nicely.

regarding the rattle: I think you are on the right path for the carb sync. Lots of methods out there. Try and find someone with a morgan carb tune or the 4 gauges setup. Either will work well.

Good luck and keep us updated.
Luke M

Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.

LukeM

Re: 1982 Cam Chain

Administrator

In reply to this post by sgtslag

Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.

TOOLS1

Re: 1982 Cam Chain

Administrator

I have this set. It's well worth the money. I have seen this same set for 2Xs the money on some parts sites.
http://cgi.ebay.com/ebaymotors/Carb-Synchronizer-Vacuum-Gauge-Sync-5-6mm-CAR-DEAL-/290530817630?pt=Motors_Automotive_Tools&hash=item4
It's amazing how loud the cam chain will be if the carbs are out of sync.
TOOLS

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1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)

Austenhealy5689

Re: 1982 Cam Chain

In reply to this post by sgtslag

i know this sounds retarded but in cant find the manual that will tell me how to adjust my timing chains on my 82 CB 750 f supersport if any 1 has any info or knows were in can find it you would be a life saver

LukeM

Re: 1982 Cam Chain

Administrator

Nothing "retarded" about your statement. Get a copy of the Factory Service Manual at the home page of this forum. Turn to chapter 3, page 11, and follow the instructions.

You could also do a search for "cam chain" or "cam chain adjust" on the forum and read through those results.

And it appears that you're a new arrival to this forum. Welcome. Your input is appreciated.
Luke M

Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.