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Voxonda:
JonnyB wrote:

--- Quote ---Voxonda wrote:

--- Quote ---
Does anyone know the free length of the valvesprings of a '76 F1 engine?

--- End quote ---


I don't think the F1 valve assembly change much from the orginal design. I'vr been using the figures:
Inner springs 38.1 mm, with a wear limit of 37.0 mm
Outer springs 41.2 mm, with a wear limit of 40.0 mm

BTW where did you get the fairing from
--- End quote ---


Hey Johnny,
That's odd, your figures are the same as what is in my '74 Workshop Owners Manual, but.......I measured the inner springs 40.1 mm, and the outer springs at 43 mm! With the help of a friend, who own's a shop in Holland specialized in SOHC's, we found in a supplement, of a '76 WOM about the F1 engines, that the springs are indeed longer!!!!!!!!!!!!!!!!!
Well that's sorted.

The fairing is a copy of the ones sold by Airtech in the USA, but I bought it in France. Personally I like it better then the one from Mead Speed.

Regards, Rob
 

Post edited by: Voxonda, at: 2007/01/10 12:52

JonnyB:
Could they be the same as F2 springs, my manual says F2 specs are:

Inner 40.3mm, wear limit 39.14mm
Outer 43.05mm wear limit 41.75

Post edited by: JonnyB, at: 2007/01/10 15:14

Voxonda:
JonnyB wrote:

--- Quote ---Could they be the same as F2 springs, my manual says F2 specs are:

Inner 40.3mm, wear limit 39.14mm
Outer 43.05mm wear limit 41.75

Post edited by: JonnyB, at: 2007/01/10 15:14
--- End quote ---


Good evening JonnyB,

That could well be, think the F1 was 'a step up' to the F2, although in my opinion the F2 was not as reliable as it's predecessor.

Thanks, Rob

Voxonda:
Here made a fix to keep the head during polishing and grinding of the valves.
 

Voxonda:
Just put some VHT on it:
 

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