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Gary E, Kev Ev, kommando, semprini
Total Likes: 4
Original Post (Thread Starter)
by Lars Haglund
Lars Haglund
what is the difference between these two lower cups for the valve springs? 41-0026 is the part number in the parts manual for 1966 models and 68-0931 in the parts manual for 1968 models.
Liked Replies
by Allan G
Allan G
Originally Posted by semprini
I'm fitting some Hepolite A65 springs but have found that they are nearly 1mm wider than the old springs, therefore won't seat into the lower cup properly. Does this mean some light grinding to fit?

1968 onwards, spring (outer) is 68-0930, cup 68-0931. For 66/67, spring 68-0806, cup 41-0026.

The cup I have measures 34.1mm OD, 31.4 ID, thickness is 4.67mm (5/32") the new spring diam. is 32.8mm, old one is about 31.5mm and is variable rate pattern.

The suppliers have not been too helpful so far.

If lars is correct that the inner diam.(ie, where spring rests) is the same on both part numbers, then it must be the new springs that are at fault.

Considering that Hepolite never made valve springs, the ones you have are Wassel owned Shite branded up as Hepolite (since they own the name, inc Lucas and Girling). I'd send them back and order the ones from SRM, the price for their springs is pretty competative and they are a good piece of kit.

Sorry I am not able to answer your question Lars
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by Lars Haglund
Lars Haglund
I got the measures for the cups from a dealers site and believed they were correct.. I could answer my question myself. Since I got the "old" cups and now both the earlier- and later springs I could see that the later springs don't hit the bottom of the cups. So either the later cups or the earlier springs for me. I think I will go for the later springs and order the later cups since it must have been a good reason for the change... The measures from semprini is the same as got from the ones I got = 41-0026.
1 member likes this
by semprini
Just out of interest, between '66, 67, 68 heads there are 3 different spring specs. I think some sellers quote the later part number for all years.

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