Decompresion mechanism repair.
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FYI, the pivot pin side clearance on the used cam above is .008"
and the New cam is .006"... so with shimwashers in maybe high grade stainless at .006+ and .004+ that feels fairly tough still, at least comparing to a stainless feeler gauge.... if you want to go as tight as .001" final clearance with a broader head contact, even better -- if flyweight still free enough to function. Maybe .005" would be thinnest we have to find. Anyway, I'll check if the shimwashers are even available in assorted thickness, and will target at 12mm OD -- what ID would we need? thanks again.
and the New cam is .006"... so with shimwashers in maybe high grade stainless at .006+ and .004+ that feels fairly tough still, at least comparing to a stainless feeler gauge.... if you want to go as tight as .001" final clearance with a broader head contact, even better -- if flyweight still free enough to function. Maybe .005" would be thinnest we have to find. Anyway, I'll check if the shimwashers are even available in assorted thickness, and will target at 12mm OD -- what ID would we need? thanks again.
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- Joined: Wed Mar 10, 2021 10:41 pm
At quick look at readily available shimwashers in stainless 18-8 are:
.234 x .303 x .005" only, and:
.25 x .375 x .003, .004, .005, .006, .008 <----looks promising to try these maybe, at least on my own two trial shafts can send you with shims .... just about same OD as our current pin head, at least not rounded on underside where the contact is made -- I'll keep checkin around. As for that lever that can come loose on the pivoting rod, that looks to be much more invasive procedure right? -- only for a "fix" and not preventative?, or can you just check for tightness before that decision?
.234 x .303 x .005" only, and:
.25 x .375 x .003, .004, .005, .006, .008 <----looks promising to try these maybe, at least on my own two trial shafts can send you with shims .... just about same OD as our current pin head, at least not rounded on underside where the contact is made -- I'll keep checkin around. As for that lever that can come loose on the pivoting rod, that looks to be much more invasive procedure right? -- only for a "fix" and not preventative?, or can you just check for tightness before that decision?
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- Posts: 0
- Joined: Wed Mar 10, 2021 10:41 pm
Z400 Decompression
Anyone have one laying around?Very similar to our and I am really interested in the sheetmetal gaurd they use.This is a pic of Hot Cams z400 cam.
Re: Z400 Decompression
QUOTE
Originally posted by cannondale27
Anyone have one laying around?Very similar to our and I am really interested in the sheetmetal gaurd they use.This is a pic of Hot Cams z400 cam.
Anyone have one laying around?Very similar to our and I am really interested in the sheetmetal gaurd they use.This is a pic of Hot Cams z400 cam.
Man I got screwed! Mine has no decomp lever on it. I wonder why they switched? I have a stock z cam laying around with the decomp lever still on it. I don't know if that helps.