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21 Mar 2006 12:21 #33095 by rtg
front forx was created by rtg
who's a good source for replacement front fork springs on a "83 KZ 1100 (about 540 lbs)my features AND fork springs....both beginning to sag! ..also the manual says about ten oz . of ATF to use as oil ...or is later 15wt fork oil better to use?
RTG
1983 Kawa KZ 1100

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21 Mar 2006 18:59 #33223 by 79MKII
Replied by 79MKII on topic front forx
I'm not 100% sure about your bike, but bike bandit had Progressive springs for mine ('79 KZ1000 A3 MKII). I would check with Jeff at Z1 enterprises first. He is great to deal with.

BikeBandit
Z1

I'm curious about the oil too. Hopefully someone will chime in.

Post edited by: 79MKII, at: 2006/03/21 22:00

The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250

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21 Mar 2006 19:35 #33245 by wireman
Replied by wireman on topic front forx
thicker oil just makes frontend stiffer .in my younger wilder wheelying days,i used to run 40 weight and never had problems .i might start experimenting with thinner oils now that im trying to hold the frontend down instead of up.hehe goodluck,happy wrenching!

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23 Mar 2006 17:39 #33842 by buckracer24
Replied by buckracer24 on topic front forx
with the heavier oil you say it makes the ride stiffer,what about the amount of oil you put in,what affects does it have if you put to much or to little.

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23 Mar 2006 18:49 #33860 by N0NB
Replied by N0NB on topic front forx
Too much oil and the forks could be prevented from compressing fully (or blow your seals out). Too little and it's likely that some of the bushings will not get adequate lubrication resulting in excessive wear.

The important part is the weight of the oil. a lighter weight (lower value) allows the oil to move through the damper faster so the forks will compress and rebound faster. Heaver weight moves slower through the damper.

Before I had a manual I put 10 wt. in and I notice the front end tends to jar quite a bit over the railroad tracks. I plan to 15 wt. in (recommended) and see if things improve.

- Nate >>

Post edited by: n0nb, at: 2006/03/23 21:50

Nate

Nates vintage bike axiom: Riding is the reward for time spent wrenching.
Murphys corollary: Wrenching is the result of time spent riding.

1979 KZ650 (Complete!)
1979 KZ650 SR (Sold!)
1979 KL250 (For sale)
1994 Bayou 400 (four wheel peel :D )

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