Hello Guest User,

Please feel free to have a look around the forum but be aware that as an unregistered guest you can't see all of it and you can't post.

To access these 'Registered Users Only' areas simply register and login.

Cracked Clutch Spring Plate

Need help restoring, building, or finding then try here.

Moderators: KeithZ1R, chrisu, paul doran, Taffus

Post Reply
Message
Author
User avatar
Cajones13
Regular Poster
Posts: 18
Joined: 23rd Oct 2016
Location: Speewah, Far North Queensland

Cracked Clutch Spring Plate

#1 PostAuthor: Cajones13 » Thu Nov 03, 2016 9:56 am

Popped the clutch cover today and spotted the outside centre has a webbing of fine cracks. They were not visible from the inside / push rod side, so not yet right through.

Image

Has anyone else encountered this?
The only replacements I have found so far have been complete Z1000 J clutches for around $600 to 800AUD.
Has anyone tried welding one up?
:?: :?: :?:
12/78 Z1000 A3A frame running 1980 C3 Police
Top
User avatar
zed1015
Hardcore
Hardcore
Posts: 2319
Joined: 2nd Nov 2005
Location: Somewhere between Scunny and Goole.

#2 PostAuthor: zed1015 » Thu Nov 03, 2016 10:45 am

Seen a few with what appear to be surface cracks like that (most likely casting fissures that have been there from new ) but never seen one fail and the pressure from the clutch mushroom is on a wider radius where the plate is much thicker too.

I wouldn't worry about it.
Top
User avatar
Cajones13
Regular Poster
Posts: 18
Joined: 23rd Oct 2016
Location: Speewah, Far North Queensland

Reassuring!

#3 PostAuthor: Cajones13 » Thu Nov 03, 2016 10:51 am

zed1015 wrote:Seen a few with surface cracks like that (most likely been there from new) but never seen one fail and the pressure from the clutch mushroom is on a wider radius where the plate is much thicker too.
I wouldn't worry about it.


Thanks for that. I'm going to be putting an APE heavy duty clutch kit in and was a little worried the stronger springs might cause a failure.
12/78 Z1000 A3A frame running 1980 C3 Police
Top
User avatar
warren3200gt
100Club
100Club
Posts: 390
Joined: 13th Jun 2014
Location: Dartford Kent

#4 PostAuthor: warren3200gt » Thu Nov 03, 2016 4:02 pm

You could always JB Weld a disc in there. That would stop them spreading any further if your worried.
PUM 488 June 17
76 Z900A4
77 Z650B1
77 KZ650B1
82 Z1000J2
89 ZXR750H1
92 Blade RRN
Top
User avatar
Cajones13
Regular Poster
Posts: 18
Joined: 23rd Oct 2016
Location: Speewah, Far North Queensland

Good idea

#5 PostAuthor: Cajones13 » Thu Nov 03, 2016 11:40 pm

warren3200gt wrote:You could always JB Weld a disc in there. That would stop them spreading any further if your worried.


I might JB a stainless washer in for peace of mind I think. Tks
12/78 Z1000 A3A frame running 1980 C3 Police
Top
User avatar
z1bman
Hardcore
Hardcore
Posts: 4227
Joined: 3rd Mar 2010
Location: WORDSLEY WEST MIDLANDS

#6 PostAuthor: z1bman » Fri Nov 04, 2016 12:01 am

push rod length too long or clutch not adjusted correctly
Top
User avatar
zed1015
Hardcore
Hardcore
Posts: 2319
Joined: 2nd Nov 2005
Location: Somewhere between Scunny and Goole.

Re: Good idea

#7 PostAuthor: zed1015 » Fri Nov 04, 2016 12:20 am

Cajones13 wrote:
I might JB a stainless washer in for peace of mind I think. Tks


Gluing a washer to it won't do a thing except wreck the motor when it drops off.
I wouldn't use any chemical metal anywhere near the inside of the motor.
It's a BODGE and would be as effective as putting a plaster over a bullet wound.

That pressure plate won't fail.
We bore out that entire centre section when doing a rack and pinion clutch release conversion with no issues or loss of rigidity.
Top
User avatar
Cajones13
Regular Poster
Posts: 18
Joined: 23rd Oct 2016
Location: Speewah, Far North Queensland

Re: Good idea

#8 PostAuthor: Cajones13 » Fri Nov 04, 2016 3:30 am

We bore out that entire centre section when doing a rack and pinion clutch release conversion with no issues or loss of rigidity.

In that case I will relax and stop making problems for myself! Tks
12/78 Z1000 A3A frame running 1980 C3 Police
Top
Post Reply

Return to “Bike Help”

Who is online

Users browsing this forum: No registered users and 17 guests