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CX500 & CX650 Turbo Forum
Started by mikebamy at 06-26-2010 6:18 AM. Topic has 7 replies.
  
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 06-26-2010, 6:18 AM
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mikebamy
 
Joined on 11-11-2009
Ontario
Posts 13
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Ive got my forks off to do the steering bearings and might as well do an oil change. Has anybody done some experimenting and come to a conclusion as to the best weight and amount. I know there is always lots of debate on oil type and weights but lets see what seems to work best in the 500 turbo.
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06-26-2010, 1:14 PM
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CXSarnia
Joined on 01-11-2008
Sarnia, Ontario, Canada
Posts 2,623
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There were a few threads about this a while ago, and I think the consensus was to move up to 20 wt FORK oil.
Back when they were new, the ATF (automatic transmission fluid) was actually a reccomendation by Honda... now however, the science of viscosity and pressure has given us specific fork oil - and it really does make a difference.
2009 DN-01 Spakin' New!
1982 CX500 Turbo & Parts bike
1981 SL185 Yamaha Exciter
198? V45 Magna
1979 CX500 Deluxe
1982 CB750K Daily rider September 1999
1982 CX500 Custom - project Originally bought April 1982 safetied and on the road 09/2008
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06-29-2010, 8:19 AM
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Dan Tenn
Joined on 04-23-2009
Winona, MN
Posts 24
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Does anyone know where the thread with the procedure for doing this is? My forks need an oil change and seal replacement but I can't find the thread with it in it. I know that the anti-dive system needs to be set at a certain # but can't remember. Thanks
1982 CX500 Turbo
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07-04-2010, 3:57 PM
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mikebamy
Joined on 11-11-2009
Ontario
Posts 13
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I don't know about the anti dive setting thing but if I had to guess I would say set it at the lowest setting as I assume this would be the larger orifice and it would drain easier. I just inverted my forks and pumped then slowly once in awhile till no more oil came out. I ended up going with Mobile 1 ATF only because I missed the bike shop and wanted to get it back together. I also put 14 PSI of Nitrogen in the forks.I like a supple fork and do alot of work on my dirt bike suspension. I wish Honda published an oil level down from the top of the tube as this is a more accurate way of putting the correct amount in. Will put in some seat time and see how they work with this configuration.
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07-16-2010, 8:46 AM
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TurboDan
Joined on 03-06-2006
Griffin, GA
Posts 92
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Just my 2 cents worth. I've read a recommedation to change the fork springs to Progressive units and eliminate the tube spacer at the top of the stock spring. Has anybody else read this or have feedback. I am ready to rebuild my 500T forks and want to do it right the first time.
Dan Topping
Diesel Tech Program Coordinator
Griffin Technical College
Griffin, GA
owner
CXTC's Parts & Accessories, Inc
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07-16-2010, 2:56 PM
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Timothy_D
Joined on 04-22-2006
Santa Rosa, CA
Posts 1,585
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Hi Dan,
Going to a progressive spring was the worst mistake I made with a turbo.
Progressives worked very well with the soft sprung CX500D and GL650I forks, and I have been pleased with those upgrades,
However, the turbo's stock springs are vastly superior OEM than other models, so very few upgrades are really necessary.
When I installed Progressives on Rat, I kicked myself in the ass for tossing the OEM springs. The Progressive spring basically defeated the purpose of the Antidive system. Front end felt like it was diving for the first few inches after hitting the brakes hard. Never again.
The only spring upgrade that I would consider would be Race Tech springs, and that's only because they send you a spring based on your bike's weight, your weight, and your riding style (which determines the spring rate).
CX500 Turbo, GL650I, Two CX650E's, and one Crown Jewel of the CX line- CX650T.
Why do I own five CX/GL bikes? Ask an alcoholic why he drinks.
Donating Member.
Sold: 1981 CX500D, 2- 1982 CX500T's, 1983 CX650C.
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07-16-2010, 3:29 PM
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CXTURBOBOOST
Joined on 05-02-2007
Lincoln, NE
Posts 440
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I put 650T springs in the 500T to eliminate the spacers... I like it... Just personal opinion, but the travel feels smoother..
PK
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Honda CX500 & G... » CX500 GL500 Tra... » CX500 & CX650 T... » Re: fork Oil Weight
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