08 D7 clutch issue

zx800modder · Jan 21, 2009

Not sure if this is a common problem or not but both mine and my brothers d7 clutches dont engage going down steep hills. Found this out highmarking, once i've turned out and start heading down hill, it seems no matter how long i hold the throttle at higher speed the clutch doesnt seem to engage at all. Just seems to be free wheeling. Thought i was going to blow the motor trying to get it to engage. Anyone else have this issue and if so how do we rectify?

Ollie · Jan 21, 2009

Actually, no. Mine engages just fine.
I would check the clutching.

thefullmonte · Jan 21, 2009

It's possible your secondary isn't back shifting fast enough. Can I assume this is worse on really steep descents?
As I'm sure you know, you should only have to blip the throttle to keep it engaged.

Top · Jan 21, 2009

thefullmonte said:
It's possible your secondary isn't back shifting fast enough. Can I assume this is worse on really steep descents?
As I'm sure you know, you should only have to blip the throttle to keep it engaged.

X 2 it works great!

Ron · Jan 21, 2009

zx800modder said:
Not sure if this is a common problem or not but both mine and my brothers d7 clutches dont engage going down steep hills. Found this out highmarking, once i've turned out and start heading down hill, it seems no matter how long i hold the throttle at higher speed the clutch doesnt seem to engage at all. Just seems to be free wheeling. Thought i was going to blow the motor trying to get it to engage. Anyone else have this issue and if so how do we rectify?

It depends on clutch setup and how quickly the drive clutch releases back to open. Adding 2 grams to my primary and I got the condition you describe vs engine braking with lighter weights that keeps the primary engaged longer and on hills.
It's more important to have the right clutch setup. I prefer the fast opening primary in all conditions except down hill.:beer;

Snoweasel · Jan 21, 2009

Secondary Issues

I had the exact same problem on my 07 D7, installed 3 delrin washers in the secondary and the problem was gone. I also installed a more aggressive helix (66-42-.46) however I'm pretty sure it was the delrin washers that eliminated the binding on the backshift.

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08 D7 clutch issue

zx800modder

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Ollie

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thefullmonte

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Top

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Ron

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Snoweasel

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