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ross kowalski
Grand Master
Username: cdfpw

Post Number: 409
Registered: 11-2015
Posted on Sunday, 07 May, 2017 - 11:39 pm:   Edit PostDelete PostView Post/Check IP

I saw a picture of a set of HD8's on the internet that had the diaphragm mixture screw secured with a spring.

Mine is secured with a nut. Not that one does this more than once, but tightening the nut is a royal PITA.

Was the nut design a replacement for the spring because they 'walked'?
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Robert Noel Reddington
Grand Master
Username: bob_uk

Post Number: 1416
Registered: 5-2015
Posted on Monday, 08 May, 2017 - 02:00 am:   Edit PostDelete PostView Post/Check IP

Crow foot spanner is what you need.

bend a flat spanner at say 70 degrees angle.
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Patrick Francis
Prolific User
Username: jackpot

Post Number: 106
Registered: 11-2016
Posted on Monday, 08 May, 2017 - 07:28 am:   Edit PostDelete PostView Post/Check IP

Hi Ross, My Jag MK 2 SUs have a spring. My roller has nuts as do yours. I always asked myself the same question.
My Jag is a 1965, and the Roller is 1974. Both work well, but does this mean that the nut was a natural progression from the spring? I don't know, but I leave well alone!
What I have in the Rolls, is a 1/4 inch ring spanner with a 6" length of doubled up thick binding wire strapped to it with some tape, giving the spanner a "bendable" extension which makes it easy to engage the spanner on the nut.
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ross kowalski
Grand Master
Username: cdfpw

Post Number: 412
Registered: 11-2015
Posted on Monday, 08 May, 2017 - 10:46 am:   Edit PostDelete PostView Post/Check IP

Robert and Patrick,

Both god ideas on getting the nut tightened, but if the spring works, I might just find and fit some springs. The engine runs so smooth I just don't see a problem with the idea.
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ross kowalski
Grand Master
Username: cdfpw

Post Number: 413
Registered: 11-2015
Posted on Monday, 08 May, 2017 - 11:12 am:   Edit PostDelete PostView Post/Check IP

Seemed to work for the Cloud...

https://youtu.be/3ih5h1J-AN4?t=536
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gordon le feuvre
Prolific User
Username: triumph

Post Number: 188
Registered: 7-2012
Posted on Monday, 08 May, 2017 - 09:21 pm:   Edit PostDelete PostView Post/Check IP

Lots "later" cars had locknut on adjusting screw to prevent owners "fiddling" with adjustment as early form of emission control, nothing to do with adjustment " walking" during service. It was the start of the world as we now know it-tamperproof!!
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Robert Noel Reddington
Grand Master
Username: bob_uk

Post Number: 1419
Registered: 5-2015
Posted on Monday, 08 May, 2017 - 10:09 pm:   Edit PostDelete PostView Post/Check IP

This adjustment is as said once set lasts for ages so I wouldn't put springs.

However if you wish buy the springs from Burlin Services who own SU. Not expensive.
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ross kowalski
Grand Master
Username: cdfpw

Post Number: 434
Registered: 11-2015
Posted on Monday, 29 May, 2017 - 12:18 pm:   Edit PostDelete PostView Post/Check IP

I was working on the car a couple days ago and made one of these. Works good.


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