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post #1 of 26 (permalink) Old 02-26-2013, 12:25 PM Thread Starter
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fork questions

what is the max pressure that i can run in my 86 forks?

12.5 oz of oil is whats needed to fill up each fork right?

and last is this oil compatible with our forks?


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post #2 of 26 (permalink) Old 02-26-2013, 12:41 PM
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Oh good, an actual motorcycle question!

I think the correct oil amount is 10.9 ounces., the forks can go as high as 7 psi and the oil you show would be fine.

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post #3 of 26 (permalink) Old 02-26-2013, 12:52 PM Thread Starter
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Oh good, an actual motorcycle question!

I think the correct oil amount is 10.9 ounces., the forks can go as high as 7 psi and the oil you show would be fine.
lol actually i posted all these questions in my crash thread but no one answered them so i had to start a new thread

then where did i get 12.5 ounces from i remember reading it some where and i could have swore i saw 40 psi was the max on the forks

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post #4 of 26 (permalink) Old 02-26-2013, 02:57 PM
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lol actually i posted all these questions in my crash thread but no one answered them so i had to start a new thread

then where did i get 12.5 ounces from i remember reading it some where and i could have swore i saw 40 psi was the max on the forks
Well I did say "I think"....meaning I could be wrong....

But when I did my forks I put in 11oz. Perhaps 12.5 is if they are brand new and totally dry?

40 sounds high for the forks.

See, this is why you are supposed to have a shop manual...

From my write up in the Verses (you look there?):

"I used a measuring cup to meter out, as close as I could tell, 10.8 oz (320mL) of 15w Bel-Ray fork oil. used a piece of tape to mark the cup so I would be sure each leg got the same amount of oil. It was roughly at the 11oz line. Used a small funnel to fill each leg"

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Last edited by Knifemaker; 02-26-2013 at 03:08 PM.
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post #5 of 26 (permalink) Old 02-26-2013, 04:13 PM Thread Starter
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yea i disassembled them and let them drain for a day
so i think i will be ok i kinda asked after i put the oil in

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post #6 of 26 (permalink) Old 02-26-2013, 08:29 PM
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Its the shocks that can be pumped up some....7lbs is correct....use a hand pump....and you dont "need" to have air in them...actually, the 7 lbs is barely noticible....guess thats why they stopped doin it....besides, wouldnt the air pressure cause the oil to foam more ? I never ran air in mine.



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post #7 of 26 (permalink) Old 02-26-2013, 11:50 PM Thread Starter
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two votes for 7lbs so i better back off the psi about 23 lbs since i am at 30 lbs

but it sure rides nice with all that air maybe there is a stiff springer in my future

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post #8 of 26 (permalink) Old 02-27-2013, 01:18 AM
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Quote:
Originally Posted by new rider 9984 View Post
lol actually i posted all these questions in my crash thread but no one answered them so i had to start a new thread

then where did i get 12.5 ounces from i remember reading it some where and i could have swore i saw 40 psi was the max on the forks
I believe it was the rear shocks that can take the higher PSI, though certainly not 40. The pressure of the rear goes off of your weight per Roach's video, I forget what the manual says.

Rear Shock Oil Change

As for the forks, there is no mention in his video itself about the PSI used, but its noted in the comments that 7psi is that max you want. (And only then if you are of a heavier build)
Fork Rebuild Video

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post #9 of 26 (permalink) Old 02-27-2013, 11:12 AM
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Its the shocks that can be pumped up some....7lbs is correct....use a hand pump....and you dont "need" to have air in them...actually, the 7 lbs is barely noticible....guess thats why they stopped doin it....besides, wouldnt the air pressure cause the oil to foam more ? I never ran air in mine.
More pressure would actualy reduce the amount of foaming...(which are bubbles created in the oil). The extra pressure makes it harder for bubbles to form.

Think about a soda bottle, it bubbles up after you remove the cap and release the pressure.

Many have installed heavier springs, putting in the Progressive springs is like the number 3 or 4 mod reccomended.

You should read the Verses again...


I ran 14 psi in the forks of my race bike and didn't have any problems. Keep in mind the 7psi max listed listed by Kawasaki might just be like the 5 pounds max for the luggage rack....more of a liability figure than a tested one.

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post #10 of 26 (permalink) Old 02-27-2013, 11:37 AM Thread Starter
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Quote:
Originally Posted by Knifemaker View Post
More pressure would actualy reduce the amount of foaming...(which are bubbles created in the oil). The extra pressure makes it harder for bubbles to form.

Think about a soda bottle, it bubbles up after you remove the cap and release the pressure.

Many have installed heavier springs, putting in the Progressive springs is like the number 3 or 4 mod recommended.

You should read the Verses again...


I ran 14 psi in the forks of my race bike and didn't have any problems. Keep in mind the 7psi max listed listed by Kawasaki might just be like the 5 pounds max for the luggage rack....more of a liability figure than a tested one.
thats kinda what i figured i think i will run about 12 to 15 and see what happens i have leak proof seals so if they leak air i know who to blame

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