Interchangeability of Cam buckets

martymoose

martymoose

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Location
Sydney, Australia
1981 Jota head has 25mm deep buckets, holes they sit in are maybe 35mm. Any problems using 27mm buckets from an earlier head? how far down do they go at fully open valve?

Cheers
Marty
 
I've used the early model long buckets in place of the short buckets on an 80 Jota.  Fitted fine. 
The Jota short valve springs had been replaced with proper length springs as well. 
 
Marty,

All buckets are interchangable, except if you're running the double springs.  In this case you would require the later thin-walled buckets, which, I think, were available only in the shorter version.  Your ex-Doug Home bike should have these fitted, I sent him a set of double springs many moons ago.

Bucket length is dependant on valve length/protrusion/lift.  Tappet bores in the heads are all machined to the same depth.  Spring has no influence, other than differing ODs.

piet
 
That's interesting, I remember he was looking for part numbers and was inquiring at Slaters for the double valve springs and gear. That was around when The Guzzi Forum was active.
 
Hi Piet thanks for your help, not for my bike but a customer Jota #7606. No 25mm buckets available in oz but dam Laverda has a set of 27?s. I?ll order them on Monday. Cheers
Marty
 
martymoose said:
Hi Piet thanks for your help, not for my bike but a customer Jota #7606. No 25mm buckets available in oz but dam Laverda has a set of 27?s. I?ll order them on Monday. Cheers
Marty
7606 2 bikes from my 81 Jota 7604 another true survivor!!!!!!!!!!!!!!
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