I have been digging about in our garage,as we had a triumph dolomite a while bk, and my bro had been going on about twin SUs for years whenever I mentioned fitting twin 40s to an old project...So i have dug them out and visually i would say they are twin SUs, they are mirrors of each other virtually...
HOWEVER I do not know how to gauge the size of them do i measure the bore on the inlet side where it meets the manifold? this measures 1.5" so im guessing these are 1 1/2 SUs? are these an over kill on a soon to be built 1275 with a stage 1 or 2 head and decent exhaust set up?
Identifying SUs visually?
Started by
robertw
, Jan 13 2006 09:31 PM
4 replies to this topic
#1
Posted 13 January 2006 - 09:31 PM
#2
Posted 13 January 2006 - 09:34 PM
nah go for it.
Look for tag numbers and search www.burlen.co.uk for th eexact type of carb butr they sound like twin hs4's.
Look for tag numbers and search www.burlen.co.uk for th eexact type of carb butr they sound like twin hs4's.
#3
Posted 13 January 2006 - 09:46 PM
yer im tempted, was just after finding out what im letting myself in for, before i fit them, in case it is better to ebay them and get some 1.25s
#4
Posted 13 January 2006 - 10:10 PM
if anything 1.25's could well be a it undercarbed in a 1275 especially if you go on to do a few head mods.
What are the numbers on the carb and have you got any pics?
What are the numbers on the carb and have you got any pics?
#5
Posted 13 January 2006 - 10:37 PM
the butterflys have 22.5 stamped on, i will clean the carbs up and get some pics and numbers on here tomor i hope
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