[Healeys] Fwd: HD8 dashpot damper part #s

Mon Jul 20 20:34:05 MDT 2020

From: richard mayor <boyracer466 at gmail.com> 
Sent: Monday, 20 July 2020 6:07 a.m.
To: Roger Grace <roggrace at telus.net>
Cc: Kees Oudesluijs <coudesluijs at chello.nl>; healeys <healeys at autox.team.net>
Subject: Re: [Healeys] Fwd: HD8 dashpot damper part #s

Are the brass caps vented?  In my earlier post about the various caps I had on some sets of HD8s, one of the caps was AUC 8114.  A responder pointed out that that cap came on a tri-carb set up. Looking more closely I noticed there was no vent hole in that cap. Why?  Because the carbs on the tri-carb set up had vents in the dashpots. HD8 dashpots are not vented so the cap should be to be vented.

Just to throw the cat in amongst the pigeons, whilst the BJ8 HD8s are dustless non-vented – Jaguar HD8s ARE vented.  

I have a pair currently sitting on my work bench.  So if Roger has a set of those on his car, he should be using non-vented dampers.

Mark

Ardmore, NZ

I'm just guessing, but would happen if a non vented cap is put on an HD8 carb?  Would the oil get sucked out of the carb? 

On Sun, Jul 19, 2020 at 10:54 AM Roger Grace via Healeys <healeys at autox.team.net <mailto:healeys at autox.team.net> > wrote:

A few years ago as my BJ8 carbs had been so molested over the years by numerous PO's bought a pair of new HD8 from Burlein.

They came with brass capped dampers.

For the life of me, cannot see any part numbers on the dampers

I am curious/suspicious as seem to have to top up more frequently than I remember with previous SU cars.

At least after every 2 tanks of gas driving time.

Not accurately checked standing time with no driving.

Where does the oil go ? Makes no difference what grade that I use.

Thoughts ?

rg

----- Original Message -----
From: Kees Oudesluijs via Healeys <healeys at autox.team.net <mailto:healeys at autox.team.net> >
To: healeys at autox.team.net <mailto:healeys at autox.team.net> 
Sent: Thu, 02 Jul 2020 02:17:15 -0600 (MDT)
Subject: Re: [Healeys] Fwd: HD8 dashpot damper part #s

The book is free of charge from Burlen/SU. You just pay the
shipping.

Kees Oudesluijs

Op 2-7-2020 om 01:21 schreef Mark
Donaldson:

Richard and Perry,

Both of my S.U. books show AUC8112 as the only damper for the BJ8

AUC8114 is for the Mk II tri-carb and ALL of the Sprites with the
exception of the Bugeye (S.U. calls it ‘Frogeye’ as do you British listers) which has AUC8103

AUC8115 is found in the HD8s fitted to E-type Jags and the 4 litre Jensen 541 from 1960 – 1963.

For you Anoraks out there, my main S.U. book by S.U. is called SPARE PARTS AND SPECIFICATION CATALOGUE.  It runs to 179
pages and is spiral bound.

I got it at the Goodwood Revival back in 2015.  It is a very useful little handbook.  It has everything you wanted to know about S.U. carburettors, but were too afraid to ask.  \uD83D\uDE0A

Mark

Ardmore

NZ

From: Perry  <mailto:healeyguy at aol.com> <healeyguy at aol.com>
Sent: Thursday, 2 July 2020 5:25 a.m.
To: richard mayor  <mailto:boyracer466 at gmail.com> <boyracer466 at gmail.com>;
healeys  <mailto:healeys at autox.team.net> <healeys at autox.team.net>
Subject: Re: [Healeys] Fwd: HD8 dashpot damper part #s

The carbs I have on hand
have the most common, and perhaps the correct piston rod 
AUC8112.  Also found AUC8114.  My factory 3000/BJ8 parts
book covering the HD8 carbs has conveniently disappeared for
the moment so I can not verify what part the factory called
for.  The weight of the piston body (very small weight at
the end of the damper rod) should not have a bearing on the
operation as it can only move vertically 1/16 inch and is
otherwise fixed in place. I checked the diameter of the
piston body on several and they all appear to be the same.
The diameter would seem to be much more important for proper
carb operation. 

I had asked the SU
dealer in England for guidance for use of the different
numbered parts but have not heard back, thus this convoluted
email to the list.

P

Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986>  for Windows 10

From: richard mayor via Healeys <mailto:healeys at autox.team.net> 
Sent: Wednesday, July 1, 2020 12:34 PM
To: healeys <mailto:healeys at autox.team.net> 
Subject: [Healeys] Fwd: HD8 dashpot damper part #s

>From the various
responses I received it seems that AUC8112 is the correct
damper for the HD8s.  The main difference between the
dampers that I can observe appears to be the size of the
very small weight at the end of the damper rod. 

----------
Forwarded message ---------

From: richard mayor <boyracer466 at gmail.com <mailto:boyracer466 at gmail.com> >

Date: Tue, Jun 30, 2020 at 6:10 PM

Subject: HD8 dashpot damper part #s

To: healeys <healeys at autox.team.net <mailto:healeys at autox.team.net> >

I have 3 sets of HD8
carburetors all with different dashpot dampers.  AUC8112,
AUC8114 and AUC8115.  What is the correct damper for a BJ8?

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