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Roger-those are the wrong dampners! The HD8 used the plastic topped=0Aon=
es and the length of them, compared to the brass, may be different-=0Ath=
us the oil slipping by. Brass ones used on earlier carbs. Hank=0A=0A=09-=
----------------------------------------From: "Roger Grace via=0AHealeys=
" =0ATo: "Healeys"=0ACc: =0ASent: Tuesday June 15 2021 9:53:07AM=0ASubje=
ct: [Healeys] HD8 Su's=0A=0A For the SU experts ..=0A Have posted about=
this problem before - and no, it has not gone away.=0ABought new (not r=
ebuilt) HD8 carbs from SU/Burlen about 7k miles ago.=0AProblem is excess=
ive use of damper oil. Have to top up about every 1.5=0Atanks of gas usa=
ge. Ultra careful about filling properly and to feel=0Aresistance about=
1/2 in above the thread. Have tried all grades of oil=0Afrom 20 wt to t=
hick gear oil with no change apart from accel. response=0Atimes. Current=
ly using SAE 30 nd. SU have no real ideas either. They=0Aare encouraging=
me to purchase new dampers - pn AUC 8112HB ... pricey=0Atoo.=0A I am no=
t convinced that will solve it but will do so.=0A There is some very min=
or scuffing on the valves. See photo. The=0Apistons drop freely and ther=
e is the classic clunk when raised 1/8 in.=0A Perhaps this is normal ? m=
aybe other owners don't check their=0Adashpots as frequently ? heavier s=
prings to limit movement ?=0A any ideas as to what gives most welcome ?=
rg=0A=0A
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<html><body>Roger-those are the wrong dampners! The HD8 used the p=
lastic 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.&=
nbsp; Hank<br><br><div class=3D"reply-new-signature"></div><p>----------=
-------------------------------</p>From: "Roger Grace via Healeys" <heal=
eys@autox.team.net><br>To: "Healeys"<br>Cc: <br>Sent: Tuesday June 15 20=
21 9:53:07AM<br>Subject: [Healeys] HD8 Su's<br><br>=0A<div dir=3D"ltr">=
=0A<div>For the SU experts ..<br></div>=0A<div>Have posted about this pr=
oblem before - and no, it has=0Anot gone away.</div>=0A<div>Bought=
new (not rebuilt) HD8 carbs from SU/Burlen about 7k=0Amiles ago.</div>=
=0A<div>Problem is excessive use of damper oil.</div>=0A<div>Have to top=
up about every 1.5 tanks of gas usage.</div>=0A<div>Ultra careful about=
filling properly and to feel resistance=0Aabout 1/2 in above the thread=
.</div>=0A<div>Have tried all grades of oil from 20 wt to thick gear oil=
with=0Ano change apart from accel. response times. Currently using SAE=
30=0And.</div>=0A<div>SU have no real ideas either.</div>=0A<div>They a=
re encouraging me to purchase new dampers - pn AUC=0A8112HB ... pricey t=
oo.<br></div>=0A<div>I am not convinced that will solve it but will do=
=0Aso.<br></div>=0A<div>There is some very minor scuffing on the valves.=
See=0Aphoto.</div>=0A<div>The pistons drop freely and there is the clas=
sic clunk when=0Araised 1/8 in.<br></div>=0A<div>Perhaps this is normal=
? maybe other owners don't check their=0Adashpots as frequently ? heavi=
er springs to limit movement=0A?<br></div>=0A<div>any ideas as to what g=
ives most welcome ?</div>=0A<div>rg<br></div>=0A<div><br></div>=0A<div><=
br></div>=0A</div>=0A</healeys@autox.team.net></body></html>
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