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twinspin
twinspin
Reading UK
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Thread Like Summary
68triton
Total Likes: 2
Original Post (Thread Starter)
#804419 04/07/2020 5:22 PM
by 68triton
68triton
Hi, I would be grateful if someone has the valve spring lengths for a 500cc DBD Clubman - road use.

The ones that I have received from reputable supplier measure as follows unfortunately due to Coronavirus they are now closed.
I ask this as there are different lengths from those in various manuals.

Outer = 1.750”
Inner = 1.725”

Many thanks
Mike.
Liked Replies
#804433 Apr 7th a 07:20 PM
by mr.moto
mr.moto
Hi 68 Triton,
I have a workshop book from Terry Springs and it gives this info.
Outer 65-2494 wire dia.0.148" od 1.256" free length 1 11/16" total coils 5 3/4 full r/h wound
Inner 65-2495 wire dia 0.116" od .940" free length 1 50" total coils 6 l/h wound
This is from a book used in the workshop to check production.
Pat A

terry 451/488 the same springs for c15/b40/b44
1 member likes this
#804489 Apr 8th a 05:22 AM
by Kerry W
Kerry W
In the past I've always been more interested in the fitted length - enough not to be coil-bound at full lift, but little enough to allow some clearance from the piston by a small margin..with luck, that'll also give the designed poundages at lift and rest.
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