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I've got a 2 barrel carb that came with the Small Block Chevy when i bought it (Its never getting used on the triumph as I've just bought a recon Holley 750cfm (damn ebay... again!).
The Rover V8 thats in the Triumph at the moment hasn't really got a carb set aside for it, it came with a ford twin choke (38 DGAS I think) but it needs rebuilt as its got no choke flapper which makes it a bar steward to start when cold, I have a new Holley 390 and Edelbrock inlet but they're worth too much to "hang on to, just in case".
Would the Rover V8 (older 3.5 P6 with 10.5:1 CR) run better with the GM or Ford carb?
I have an old set of SU's but they're so "used" they'll need a load of spares to recommission.
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Triumph Estate to do list:
1. Remove Rover V8 - done
2. chop, weld, spray - ongoing, need motivation
3. drop in RB25
4. burn rubber
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don't know anything about the GM 2 barrel carb but I would have thought the DGAS would at its limit with a rover V8.
Has it been jetted to suit the rover or just left as is.
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The Weber is an ace carb for a Rover 3.5 - the Weber will support up to 185 BHP (apparently) so if the V8 is basically stock you are on a winner with the carb you have. Better MPG and drivability and easier maintenance than the twin SUs, waaaaay better MPG and easier tuning that the Holley 390. Also less prone to leaks... I'd be looking for a better nick weber (ie one with a choke!) for your car TBH>
What is the GM carb? They used Holley, Rochester and Carter carbs. Some of which will be emission era carbs and some of these have all mannerof additional vacuum controlled cr@p for emissions management and are no good for performance and some may even need a ECU to operate them.
Even if its a good early 2bbl carb not many people have experiance tuning them as most performance applications go with a 4 barrel and I've never seen one on a Rover. I have to admit its one I've thought about as those 2 barrel carbs are throw-away cheap, so let me know how you get on if you do go down this route.
Holley do a performance 2 barrel (500 cfm) which smells like it should be right for a Rover and they are a pukka performance carb designed for racing series where a stock 2bbl carb is required for compliance. Never used one myself.
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1941 Wolseley Not Rod - 1956 Humber Hawk - 1957 Daimler Conquest - 1966 Buick LeSabre - 1968 Plymouth Sport Fury - 1968 Ford Galaxie - 1969 Ford Country Squire - 1969 Mercury Marquis - 1970 Morris Minor - 1970 Buick Skylark - 1970 Ford Galaxie - 1971 Ford Galaxie - 1976 Continental Mark IV - 1976 Ford Capri - 1994 Ford Fiesta
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Philip
Part of things
Posts: 106 
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I can tell you that old Carter BBDs are rubbish ...
Phil
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Dunno, have one on my Fury and thats put up with some silly abuse and is about the most reliable thing on the damn car... Once had a fuel pump go and had to get it home by keep taking the top off the carb, filling the float bowls, screwing it back together, driving 100 yards and repeating the process whenit was out of fuel... We'd have pushed it but it was too steep a hill... Nice simple carb  |
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1941 Wolseley Not Rod - 1956 Humber Hawk - 1957 Daimler Conquest - 1966 Buick LeSabre - 1968 Plymouth Sport Fury - 1968 Ford Galaxie - 1969 Ford Country Squire - 1969 Mercury Marquis - 1970 Morris Minor - 1970 Buick Skylark - 1970 Ford Galaxie - 1971 Ford Galaxie - 1976 Continental Mark IV - 1976 Ford Capri - 1994 Ford Fiesta
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