New radiators for 87 cr 250/500

gamakona
Posts
48
Joined
9/2/2013
Location
CA
9/4/2013 3:25pm Edited Date/Time 9/5/2013 8:22pm
Anyone purchased those low cost brand new radiators on eBay for. 87 cr 250/500? They are non painted and was wondering how they fit and quality. They' sell for about $140.
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Foghorn
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927
Joined
1/26/2013
Location
CA
9/4/2013 6:05pm
I haven't but most reports are that they are good. Some issues at time with nozzle orientations but they come clean by all accounts.
718
Posts
314
Joined
6/24/2012
Location
Spring Branch, TX US
9/4/2013 6:52pm
I have installed a few sets for customers ans the fitment is ok. However, on a few sets the filler neck was positioned wrong. When the cap is on the fork tub would hit it. Honestly, I would wait it out and find a good set of used 87 rads.
jzazella
Posts
20
Joined
10/10/2012
Location
Phoenix, AZ US
9/5/2013 8:55am
The eby ones work ok, I agree with foghorn though. I had to adjust the lower outputs a bit. Be careful with used 87's. I bought a set, sent them to Mylar's and they could not be repaired.
justpinit
Posts
434
Joined
8/1/2006
Location
British Columbia CA
9/5/2013 10:10am
So...overall not bad quality with a few fitment issues. Thanks for the info, I have been wondering if those rads were complete junk or not. The price & availability is right!

The Shop

jzazella
Posts
20
Joined
10/10/2012
Location
Phoenix, AZ US
9/5/2013 10:32am
I have raced a couple of seasons with them, in the AZ heat, no issues. Still look nice too. They do however, take a while to ship from China.
CamP
Posts
6828
Joined
8/16/2006
Location
Colleyville, TX US
9/5/2013 11:50am Edited Date/Time 9/5/2013 11:52am
It's fairly easy to clean out an old set radiators that are plugged with lime scale or magnesium oxide. Take the rads and hoses off the bike. Join the radiators with the hoses, put the assembly in the kitchen sink, fill them up with 20% vinegar and let it soak for 48 hours. After 48, dump the vinegar down the drain and flush the rads with running water until the junk quits coming out. There will be a lot of junk in them. After that, fill the sink with water and submerge the rads to remove all traces of acid.

I have had success using this method to clean radiators that were so plugged up that air wouldn't pass through them.
jzazella
Posts
20
Joined
10/10/2012
Location
Phoenix, AZ US
9/5/2013 12:11pm
Will that flush out the magnesium also?
CamP
Posts
6828
Joined
8/16/2006
Location
Colleyville, TX US
9/5/2013 1:58pm
jzazella wrote:
Will that flush out the magnesium also?
Yes, the acetic acid in 20% acid vinegar will dissolve the magnesium oxide build-up.

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