Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: ianmck on April 13, 2013, 08:29:11 PM

Title: damaged cooling fins
Post by: ianmck on April 13, 2013, 08:29:11 PM

can anyone give me some advice, I have a couple of damaged cooling fins on the engine, any ideas on repairing them, the engine is out but I dont want to strip it if poss.

Title: Re: damaged cooling fins
Post by: Bob Wessner on April 13, 2013, 08:49:02 PM

I used an epoxy clay to replace a chunk out of the very top fin on my 750. That was about 6 years ago and it's still there, no problems.

Title: Re: damaged cooling fins
Post by: Bob Wessner on April 13, 2013, 10:03:35 PM

Finally found the thread where this was discussed (U.S. Forum) and the product I used. Hope it is of some help.

http://forums.sohc4.net/index.php?topic=19402.msg202306#msg202306 (http://forums.sohc4.net/index.php?topic=19402.msg202306#msg202306)

Title: Re: damaged cooling fins
Post by: ianmck on April 14, 2013, 08:21:45 PM

Bob you are a star, thank you for your efforts, I will try to find the same or something simmilar over here. thanks again, Ian.

Title: Re: damaged cooling fins
Post by: Bryanj on April 15, 2013, 06:29:58 AM

Devcon, if its still made, used to do a metallic based epoxy putty for all the different metals

Title: Re: damaged cooling fins
Post by: Bob Wessner on April 15, 2013, 11:24:27 AM

Wasn't aware of this one. It appears Devcon is still available but at this site it's pricey and the quantity is a bit much.  :-\

 http://www.ellsworth.com/devcon-aluminum-putty-f-1lb-kit/  (http://www.ellsworth.com/devcon-aluminum-putty-f-1lb-kit/)

Title: Re: damaged cooling fins
Post by: Bryanj on April 15, 2013, 05:08:35 PM

Used the steel, brass and alloy types when in the merchant navy Bob. When used correctly it will take a thread as long as you dont want extreme torque. Also used some etuff called Thistlebond that i havent seen for a while----was a woven glassfibre bandage along with a resin and hardener, didn't half get hot quick and burnt fingers!!!

Title: Re: damaged cooling fins
Post by: Bob Wessner on April 15, 2013, 06:53:17 PM

Bryanj, looks like Thistlebond is still around also.

http://www.thistlebond.info/products/engineering/metalrepair.htm (http://www.thistlebond.info/products/engineering/metalrepair.htm)

Where were you with all this knowledge six years ago when I needed it?  ;D

Title: Re: damaged cooling fins
Post by: Bryanj on April 16, 2013, 08:36:03 AM

Sorry Bob, was building No 36 for the first time i think!

The Thistlebond I remember was

http://www.thistlebond.info/products/addedinfo/TRK2006.htm

Never knew of the other stuff, it was the Devcon for that.

All the best mate