Strombergs / SUs

Engine Oily Bits, Ignition, Fuelling, Cooling, Exhaust, etc.
Message
Author
yandy
Newbie
Newbie
Posts: 17
Joined: Tue Sep 10, 2013 12:49 pm
Location: West Dorset

Strombergs / SUs

#1 Post by yandy » Thu Oct 10, 2013 10:12 am

Hello,

I'm having eternal problems getting the existing Strombergs on my 1973 Mk2 2000 to run well. I've done all within my capacity and that of my neighbourhood TR6 driving mechanic.

I've been offered a set of SUs, although would still need a manifold.

What are the relative merits of each - Strombergs and SUs? Is this a sensible way to go?

Your thoughts would be appreciated.

Thanks,

Andy
'73 2000 - big, bad and very brown

Mike Stevens
Site Admin
Site Admin
Posts: 3399
Joined: Mon May 08, 2006 9:50 pm
Location: South Oxfordshire, UK

Re: Strombergs / SUs

#2 Post by Mike Stevens » Thu Oct 10, 2013 11:58 am

Hi Andy,

The strombergs do work OK but I have to admit to preferring SUs myself. I fitted a pair of HS6s to my 1971 2000 and after some messing with needle choice, I did get it running well.

What's the basic problem you're having? You say not running well, but what particularly? One of the most important things is to make sure the diaphragms are not split and are fitted correctly. But I guess you've checked all that several times!

Cheers,
Mike.
(South Oxfordshire)
Register Member No 0355
1971 2.5PI Saloon Sapphire blue
1973 2.5PI Saloon rust some Honeysuckle
1973 Stag French blue
(1949 LandRover was blue should be light green!)

yandy
Newbie
Newbie
Posts: 17
Joined: Tue Sep 10, 2013 12:49 pm
Location: West Dorset

Re: Strombergs / SUs

#3 Post by yandy » Fri Oct 11, 2013 1:06 pm

Thanks Mike,

I think I'll keep the SUs as an option for later, but useful to here some support for them. I've been reading up and I'm ready to go another round with the Strombergs - they ought to be good.

Andy
'73 2000 - big, bad and very brown

Charles H
Senior Member
Senior Member
Posts: 1369
Joined: Mon Jan 15, 2007 2:38 pm
Location: Folkestone

Re: Strombergs / SUs

#4 Post by Charles H » Sun Oct 13, 2013 10:26 am

Strombergs MUCH better built!!
Charles Harrison
Register member 3095
Folkestone
Cherry Red Mk1 2000 Rally Car
Mallard Blue 2.5PI
Sapphire Blue GT6 Mk3
Vermillion Red Spitfire 1500
Pimento Red TR6
Pimento Red Stag
Inky Blue VW Passat B5.5
Arctic Blue Jaguar XJ40

willjan
Senior Member
Senior Member
Posts: 301
Joined: Fri Sep 09, 2011 2:57 pm
Location: rainham kent

Re: Strombergs / SUs

#5 Post by willjan » Sun Oct 13, 2013 3:10 pm

Charles!!you old smoothie :D :D

Bill.
jan and bill radford.

65'C' mk1 saloon in black over cactus ,matador int
67'E'.T6 GT6.yellow,black int.

yandy
Newbie
Newbie
Posts: 17
Joined: Tue Sep 10, 2013 12:49 pm
Location: West Dorset

Re: Strombergs / SUs

#6 Post by yandy » Sun Oct 13, 2013 6:51 pm

It was all in the needle adjuster o-rings. As a relative newby, it took me some nerve to go in there and work that out. Both were solid and stuck to the valve (the car had been stationary for a long time. One of the brass grub screws locating the needle had been screwed up tight to the needle so it couldn't move anyway, and then had half its head broken off too so needed to have a hole drilled which allowed an equally and opposite broken screwdriver to shift it.

All that's much further than I've ever gone into a carb in my life so I'm feeling pleased with myself. In the process I've learned to marvel at the ingeniousness of them. The best help I found was here: http://www.buckeyetriumphs.org/technica ... CarbsI.htm - gave me the confidence to go in there and recommended to anyone needing encouragement.
'73 2000 - big, bad and very brown

Charles H
Senior Member
Senior Member
Posts: 1369
Joined: Mon Jan 15, 2007 2:38 pm
Location: Folkestone

Re: Strombergs / SUs

#7 Post by Charles H » Thu Apr 05, 2018 10:04 am

Mike Stevens wrote:
Thu Oct 10, 2013 11:58 am


The strombergs do work OK but I have to admit to preferring SUs myself. I fitted a pair of HS6s to my 1971 2000 and after some messing with needle choice, I did get it running well.

Cheers,
Mike.
Mike
What needles did you use? Trying the same set up on another 1971 2000. BCY perhaps?
Thanks
Charles Harrison
Register member 3095
Folkestone
Cherry Red Mk1 2000 Rally Car
Mallard Blue 2.5PI
Sapphire Blue GT6 Mk3
Vermillion Red Spitfire 1500
Pimento Red TR6
Pimento Red Stag
Inky Blue VW Passat B5.5
Arctic Blue Jaguar XJ40

Mike Stevens
Site Admin
Site Admin
Posts: 3399
Joined: Mon May 08, 2006 9:50 pm
Location: South Oxfordshire, UK

Re: Strombergs / SUs

#8 Post by Mike Stevens » Mon Apr 23, 2018 1:07 pm

Sorry for the delay Charles!

I'll have to go and look up what I ended up with. I know they came from Burlen. I can't check on the car as it's now with a new owner!

Cheers,
Mike.
(South Oxfordshire)
Register Member No 0355
1971 2.5PI Saloon Sapphire blue
1973 2.5PI Saloon rust some Honeysuckle
1973 Stag French blue
(1949 LandRover was blue should be light green!)

Charles H
Senior Member
Senior Member
Posts: 1369
Joined: Mon Jan 15, 2007 2:38 pm
Location: Folkestone

Re: Strombergs / SUs

#9 Post by Charles H » Mon Apr 23, 2018 5:09 pm

Thanks Mike. :D
Charles Harrison
Register member 3095
Folkestone
Cherry Red Mk1 2000 Rally Car
Mallard Blue 2.5PI
Sapphire Blue GT6 Mk3
Vermillion Red Spitfire 1500
Pimento Red TR6
Pimento Red Stag
Inky Blue VW Passat B5.5
Arctic Blue Jaguar XJ40

Mike Stevens
Site Admin
Site Admin
Posts: 3399
Joined: Mon May 08, 2006 9:50 pm
Location: South Oxfordshire, UK

Re: Strombergs / SUs

#10 Post by Mike Stevens » Mon Apr 30, 2018 8:31 pm

Hi Charles,

I went through the old 2000 file but can't find which needles I used. I found all the original calculations I did when I had the 2.5 head skimmed down and some graphs I plotted of the various different needles I tried, but no info on what I eventually used.

Sorry!

Cheers,
Mike.
(South Oxfordshire)
Register Member No 0355
1971 2.5PI Saloon Sapphire blue
1973 2.5PI Saloon rust some Honeysuckle
1973 Stag French blue
(1949 LandRover was blue should be light green!)

Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests