If you would like to join the DLOC, please visit the Club's website https://www.dloc.org.uk/
Please don't post someone's email address. Some people don't want to risk it being harvested by spambots and GDPR regulations discourage it.
Always look at "ACTIVE TOPICS" which gives all posts in date & time order if you can't find a post as topics are sometimes moved; or look at "Your Posts".
Reg. nrs. Please add reg. nr. when posting a photo or anything about a car as this will help searches. Don't add punctuation next to nr. as this negates search.

LQ2/20 Carburettor help please.

Post Reply
JedFurneaux
Posts: 47
Joined: Tue Jul 11, 2017 5:50 pm
Location: Tregoss Cornwall

LQ2/20 Carburettor help please.

Post by JedFurneaux »

Hi all,
My 1934 LQ2/20 is fitted with a bronze bodied SU HV3 carb. The number on the alloy tag on the float chamber is AU 960. This Winter I am thinking of taking it off for an overhaul. On ebay there are nice looking carburettor overhaul kits for the LQ offered by 'Historic car parts' of Macclesfield including a new jet specified as an 'S6' however according to my 1964 edition of SU's catalogue for BMC cars (including older marques like Daimler & Alvis) the jet should be one of three: P6 (rich), P61 (standard) or P5 (weak). Confusingly the HV3 carburettor specified in this list for the 1933/36 LQ2's is AUC 209! I know the obvious way forward is to take mine to bits and see what's in it at the mo but owing to the discrepancy in the 'AUC' numbers I can't even say for certain if the carb on mine is the correct one.
Can anyone with extensive knowledge of these engines assist please?
PS. I have tried to message 'Historic car parts' on the ebay system but apparently they do not interact with customers this way (?!) and I can't find any other means to contact them.

User avatar
marchesmark
Posts: 277
Joined: Tue Feb 09, 2016 8:02 pm

Re: LQ2/20 Carburettor help please.

Post by marchesmark »

Jed,

Speak to Burlen, they are the experts and will be able to help you.

Mark

https://burlen.co.uk

classiclife
Posts: 548
Joined: Wed Sep 05, 2018 9:55 am
Location: Ridgewood - East Sussex
Contact:

Re: LQ2/20 Carburettor help please.

Post by classiclife »

Hello,

I do not have knowledge of these cars at all, sorry.

However, you may be better placed to contact Burlen Services: http://sucarb.co.uk/?___store=su and ask them to confirm the correct spec. In addition they will be able to supply support advice. I have always found them very helpful with numerous and not always straight forward enquiries.

An eBay company that does not have a Q&A facility is unacceptable in my book, personally - happy to take your money but not that happy to field questions. Shame on them and I certainly would not be giving them my custom; as I said, purely a personal stance.

Good luck.

Regards.

Richard.
1968 Daimler V8-250 Saloon
DLOC East Sussex Area Representative.

Southern Classics Society Events Co-ordinator.
www.southernclassics.org.uk

classiclife
Posts: 548
Joined: Wed Sep 05, 2018 9:55 am
Location: Ridgewood - East Sussex
Contact:

Re: LQ2/20 Carburettor help please.

Post by classiclife »

I rest my case on advice given !!
1968 Daimler V8-250 Saloon
DLOC East Sussex Area Representative.

Southern Classics Society Events Co-ordinator.
www.southernclassics.org.uk

migray
Posts: 139
Joined: Fri Feb 26, 2016 10:31 pm
Location: Bakewell

Re: LQ2/20 Carburettor help please.

Post by migray »

A search on Burlen's website suggests AUC 209 is correct for your car HV3 Carburettor for a Daimler 20 H.P PV & LQ 1933-36
Part Number: AUC 209

Description: HV3 Carburettor for a Daimler 20 H.P PV & LQ 1933-36

Availability: Temporarily out of stock

CLICK TO BACK ORDER

PLEASE ASK
HV3 Carburettor for a Daimler 20 H.P PV & LQ 1933-36
S6 is the quoted standard needle

The AUC 960 is for a Rover P4 and is a HD6 type carb of the 50's. AU 960 is not known. http://burlen.co.uk/catalogsearch/result/?q=AUC+960

JedFurneaux
Posts: 47
Joined: Tue Jul 11, 2017 5:50 pm
Location: Tregoss Cornwall

Re: LQ2/20 Carburettor help please.

Post by JedFurneaux »

Thanks, All.

ranald
Posts: 323
Joined: Sat Feb 13, 2016 8:21 am
Location: North Wales

Re: LQ2/20 Carburettor help please.

Post by ranald »

Jed, Have you looked in the LQ2/20 Parts Book TC78? Page 10 and 11 relate to the carburettor. Just for the record, the Lanchester 15/18 and 18 used the same HV3 SU unit.
Burlen rebuilt my Lanchester's one in 2016 for £250.00 + vat. All the best, Ranald

JedFurneaux
Posts: 47
Joined: Tue Jul 11, 2017 5:50 pm
Location: Tregoss Cornwall

Re: LQ2/20 Carburettor help please.

Post by JedFurneaux »

Thanks, Ranald.
My parts book is TC 89 but I guess they are all pretty much the same. The book gives the needle as P61 which agrees with my SU catalogue but not with Burlen! The HV3 was used by many Daimlers, Lanchesters and other pre war cars but they all have different 'AUC' numbers. The correct one for mine is apparently AUC 209 but the one specified for the Lanchester 18 of 1932/34 is AUC 138. That sounds like a reasonable price and is useful to know.
Very best wishes,
Jeremy.

JedFurneaux
Posts: 47
Joined: Tue Jul 11, 2017 5:50 pm
Location: Tregoss Cornwall

Re: LQ2/20 Carburettor help please.

Post by JedFurneaux »

Update: Having taken the carb off now and ordered a new rebuild kit and P61 needle from Burlen I will rebuild the carb over the next week or so. Interestingly the needle that was in there was a number 4 which is the standard fitment for the '15' engine!

Post Reply