neil h
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Registered: 28th Sep 06
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Which is the best overal option for a c16/c20XE? Based on BHP/£ and general ease of use/fitting?
Also whats the arguments for/against chosing the C16XE over the C20?
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Eck
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Registered: 17th Apr 06
Location: Lundin Links, Fife
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Carbs are cheaper than TB's, but have to be set up more often, and will not be as efficient as a good tb set up.
Also there are pro's and cons to the engine itself.
If you buy an early Corsa GSi then you have the engine that was designed for the car already in place, which normally will be more reliable. But obviously the C20 will give you big bang for quite little buck!
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willay
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Organiser: South East, National Events
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Registered: 10th Nov 02
Location: Roydon, Essex
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can-o-worms
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fazza
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Registered: 7th Feb 08
Location: Plymouth
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as willay said.
depends on your budget and what u want but tb's can be set up alot more accurately and produce better results but cost alot more
1600 or 2000 on carbs are good and alot cheaper but
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neil h
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Registered: 28th Sep 06
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Yeah, i thought it was a bit of a can of worms. Ultimately money is quite a big decider 'cus a TB kit is rather expensive (although bike TBs maybe a cheaper option).
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fazza
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Registered: 7th Feb 08
Location: Plymouth
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your still needing standalone management though so still expensive
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philip2
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Registered: 1st Oct 06
Location: n.wales/chester
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y does everyone think carbs need setting up/adjusting all the time? its crap, i never had problems with carbs going out of sync or anything, just need decent linkages and no play in anything
carbs are better money wise as cheaper...maybe £800 for everything 2nd hand + jetted to suit
tb's £2400 ish with mapping on top.(new) maybe £1500-£18002nd hand
for the average user there not much differance power wise between using carbs/tbs at top end anyway
but tbs have advantage of being neater, not mucking about with idle, main jets, emulsion tubes etc like you do with carbs. you can have an economy map if going for MOT and generally more efficient and can make the car more driveable if running silly cams etc
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neil h
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Registered: 28th Sep 06
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Anyone know if the Dbilas TB's are much cop? 'Cus they appear to be a straight bolt on job.
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av it
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Registered: 4th Mar 08
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most of them are straight bolt on but its the setting up and maintaining that costs the money
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Daimo B
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Registered: 20th Mar 00
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quote:
Originally posted by philip2
y does everyone think carbs need setting up/adjusting all the time? its crap, i never had problems with carbs going out of sync or anything, just need decent linkages and no play in anything
carbs are better money wise as cheaper...maybe £800 for everything 2nd hand + jetted to suit
tb's £2400 ish with mapping on top.(new) maybe £1500-£18002nd hand
for the average user there not much differance power wise between using carbs/tbs at top end anyway
but tbs have advantage of being neater, not mucking about with idle, main jets, emulsion tubes etc like you do with carbs. you can have an economy map if going for MOT and generally more efficient and can make the car more driveable if running silly cams etc
Carbs are neater actually if done properly 
carbs are easier to get big hp, they generally seem to make more power with less modifications (worm opens) and for much less money.
But save that money, as u'll need the extra for the huge fuel amounts they drink when being pushed hard.
A lot of companies still use carbs on the C20XE.
Thing is with carbs is you setup where you want the power, by the size of the carbs. So you can go for smaller carbs, less peak power, more bottom and mid range, or bigger carbs and have less power down low but huge power top end.
TB can be mapped the whole way up to give a much more even power delivery.
Philip, why do people say it, because its true??? Maybe your carb readers are faulty, but carbs fall out of allignment, fact. Even my bike engine that has carbs needs to be re-alligned every so often. Usually your looking at every 6months-1 year.
1 person saying they don't need re-setting, but thousands saying they do, welll.......
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av it
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Registered: 4th Mar 08
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from my experience in the last 6 months i had a standard 20xe 150bhp then had bike carbs fitted with kent cams 185bhp now have tb's and am at 190bhp so far so between carbs and throttle bodies i would pick bike carbs again for cheapness and throttle bodies for cleaner and easier maintenance
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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throttle bodies will give better driveability and economy, thats about it.
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philip2
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Registered: 1st Oct 06
Location: n.wales/chester
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i know they will need some tweaking but the way everybody is saying, is that there that bad they need checkin constantly which they dont.
[Edited on 11-12-2008 by philip2]
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Corsa_Sport21
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Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
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Carbs will sook the fuel no matter what.TBs are a bit more efficent.
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Mike GSi
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Registered: 3rd Jan 07
Location: Ipswich, Suffolk Drives:Astra VXR
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i always thought that carbs were put on engines which have a distributer cap, and TB's go on engines with coilpacks  How random is that 
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Linch
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Registered: 4th May 06
Location: Whickham, Tyne and Wear
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Iv got dbilas ones, modified trumpets to fit them and iv got good results 
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Morley
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Registered: 17th Dec 03
Location: Lancaster, Lancashire
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Right I have twin webber 40mm DCOE carbs on a 14NV 1400 8v Nova SR block, and they sound incredible. The sound alone makes people from the ages of 18 upto 60 ask me questions like "what on earth have you got it that".
Fuel bill worries - pah, get over it! It's worth it when you hear the sucking over the roar of the exhaust.
I got my 40's for £200 on ebay, fully reconditioned, genuine webbers, as opposed to dellortos, BARGAIN
Inlet manifold cost me (IIRC) about £120/£140
Having them setup by minisport in padiham (BAAAAAD BAD IDEA, WOULD NOT RECCOMEND THEM TO ANYBODY) cost me around £100 and the trumpets for them must have been around £20.
That's less than £450 and I got a mate to help me fit them who had previous experience with them.
To have ever considered throttle bodies makes me want to kick myself as they are an incredible addition to my engine bay!
personally; Carbs all the way!
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neil h
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Registered: 28th Sep 06
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So what engine management do you need to run carbs?
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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if it has a dizzy no management is needed.
Delortos are better than webbers, people used to put the dellorto internals into webber 'shells' because the rules stated webbers only.
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Morley
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Registered: 17th Dec 03
Location: Lancaster, Lancashire
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Delortos and webbers being better or worse than eachother differ depending on what you are after. I know people who race professionally and also have performance track cars and their own garages/car parts shops that insist webbers are easier to adjust and better overall, but its swings and roundabouts IMO. Both sound the tits!!
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