Thumper Club Forum

Technical => Bike Problems/Questions => Topic started by: JOOLZ on May 03, 2017, 06:19:27 PM

Title: GB 400
Post by: JOOLZ on May 03, 2017, 06:19:27 PM

Im helping a friend change the cam chain on his GB400, does it use the same cam chain as the XBR GB 500

Title: Re: GB 400
Post by: SteveC#222 on May 03, 2017, 07:28:41 PM

According to the CMSNL part lists it's the same part number so it should



https://www.cmsnl.com/honda-xbr500-1987-h-germany_model6435/chain-cam_14401mk4601/#.WQouotwo_IU

https://www.cmsnl.com/honda-gb400-1985-type-ii-f-japan-nc20-100_model48671/chain-cam_14401mk4601/#.WQovJNwo_IU

Title: Re: GB 400
Post by: JOOLZ on May 04, 2017, 07:04:47 AM

Thanks for that

Title: Re: GB 400
Post by: SteveC#222 on May 04, 2017, 07:49:01 AM

Dave Silver sells pattern cam chains for the XBR much cheaper than CMSNL.  He sould also be able to confirm if it will fit.

Title: Re: GB 400
Post by: JOOLZ on May 04, 2017, 08:47:37 AM

Im am going to give him my old cam chain, its only done 6000 miles so practicly new. He is a student so I thought I would save him a few quid

Title: Re: GB 400
Post by: guest2083 on May 05, 2017, 04:59:10 PM

Quote from: JOOLZ on May 04, 2017, 08:47:37 AM

Im am going to give him my old cam chain, its only done 6000 miles so practicly new. He is a student so I thought I would save him a few quid

Apparently a worn cam chain need to be fitted in the same direction as it was on originally, otherwise it's noisier and wears the cam sprockets faster, the second bit I can't confirm but the first bit was the case on old red.
I am interest to know about the camchain, and also that CMS have a GB400 parts list on line, I've never looked so may well do as I'll be interested to see where the engines differ from what I know for the XBR, thank you,