[Healeys] HD8 Su's

[richard mayor]

What change in acceleration do you feel that prompts you to check the fluid
level?

On Tue, Jun 15, 2021 at 9:50 AM Roger Grace via Healeys <
healeys at autox.team.net> wrote:

> For the SU experts ..
> Have posted about this problem before  - and no, it has not gone away.
> Bought new (not rebuilt) HD8 carbs from SU/Burlen about 7k miles ago.
> Problem is excessive use of damper oil.
> Have to top up about every 1.5 tanks of gas usage.
> Ultra careful about filling properly and to feel resistance about 1/2 in
> above the thread.
> Have tried all grades of oil from 20 wt to thick gear oil with no change
> apart from accel. response times. Currently using SAE 30 nd.
> SU have no real ideas either.
> They are encouraging me to purchase new dampers - pn AUC 8112HB ... pricey
> too.
> I am not convinced that will solve it but will do so.
> There is some very minor scuffing on the valves. See photo.
> The pistons drop freely and there is the classic clunk when raised 1/8 in.
> Perhaps this is normal ? maybe other owners don't check their dashpots as
> frequently ? heavier springs to limit movement ?
> any ideas as to what gives most welcome ?
> rg
>
>
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