[Healeys] HD8 Su's

[gradea1 at charter.net]

Roger-those are the wrong dampners! The HD8 used the plastic topped
ones and the length of them, compared to the brass, may be different-
thus the oil slipping by. Brass ones used on earlier carbs. Hank

	-----------------------------------------From: "Roger Grace via
Healeys" 
To: "Healeys"
Cc: 
Sent: Tuesday June 15 2021 9:53:07AM
Subject: [Healeys] HD8 Su's

  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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