D85CGV Posted January 22, 2017 Share Posted January 22, 2017 I've seen a few topics on here with regards to converting the 2.0 cih engine to carbs. There seems to be various options and ways of doing it. I just wanted to throw another one into the mix to find out if anyone had any experience of this type. I found a video on YouTube of a 2.0 GT/E running twin dellorto 45s. I would assume others have done it as well. If so I'd like to hear how you find it and how easy a conversion it is. Cheers Davy Quote Link to comment Share on other sites More sharing options...
spiney_norman Posted January 22, 2017 Share Posted January 22, 2017 Manifolds are reasonably easy to come by, the only problem I know of is that the trumpets on 45s foul the servo/master cylinder on RHD cars Quote Link to comment Share on other sites More sharing options...
H-400 Posted January 22, 2017 Share Posted January 22, 2017 I did the rebuild more than 20 years ago. Think my daughter was just starting to walk so it was 1993... This picture will prove it is possible to keep the original thermostatic house with the DCOE carbs: The air-filter was "stolen" from a VW-Golf Diesel. The engine had a nice sound but not that more power than I expected, the idle was a lot better after using those multi-spark plugs. I remember I fixed the synchronise-screw between the two carbs so I had not that much work to tune them after some time. Quote Link to comment Share on other sites More sharing options...
D85CGV Posted January 22, 2017 Author Share Posted January 22, 2017 Thanks for the replies lads. @spiney_norman that's was a point that I was wondering about. I knew the DCOE carbs necessitated modification or movement of the brake servo assembly. I had hoped that a different carb set up might fit with out a mod. When I get to that stage of my restoration I'll work out what I want to do but chances are I'll just stick with fuel injection. I wasn't really looking for performance gains. It was more just for a nice sound. Hopefully I'll be able to get an exhaust made that will give me the sound I'm after or close enough anyway. Quote Link to comment Share on other sites More sharing options...
MANTAMAN Posted January 23, 2017 Share Posted January 23, 2017 There are ways around the brake reservoir / rear trumpet fouling issue, The Green exclusive of many years back solved this by using a remote brake fluid reservoir from a Renault Megan coupe mounted infront of the damper turret. A very different option would be what i saw done to an A seriers in the Netherlands, using two Manta throatle valves and an airflow meter of a BMW 6 series - When i saw this i wondered if it was possible to place the throatle valves on the other side of the plenum and have the intake tracts over the engine in the same manner as a 24 valve ? The new plenum intake tracts / bosses were alloy welded on ( the original hole blanked off ) and the faces machined flat in one pass to ensure both aligned, there is one special long spindle through both throatle valves, it is 2L and uses an original ECU and various normal tuning mods ( cam, Fueling etc ) and makes about 160 bhp ! Quote Link to comment Share on other sites More sharing options...
D85CGV Posted January 23, 2017 Author Share Posted January 23, 2017 That's quite something if it's a 2.0 litre. When you get to 150 brake that seems to be just about the limit of what it will produce. Just shows you what can be done with a bit of ingenuity. I like the idea of using a remote reservoir. Presumably the servo itself doesn't get in the road of the rear trumpet. Quote Link to comment Share on other sites More sharing options...
lamchop77 Posted January 23, 2017 Share Posted January 23, 2017 Thats exacty the problem with sidedraughts on the CIH in a mant/ascona, the servo is in the way. Easy solution , move the servo to where the injectio airbox mounts and fabricate a long push rod to therear of it. No more clearance problems!! Quote Link to comment Share on other sites More sharing options...
rutts Posted January 23, 2017 Share Posted January 23, 2017 Or use a down draft manifold with idf carbs. Could use record Sprint twin down draft manifold and twin dgas carbs. No servo mods required. Quote Link to comment Share on other sites More sharing options...
H-400 Posted January 24, 2017 Share Posted January 24, 2017 (edited) Found years ago a set Sprint twin carbs, couldn't resist cause they were cheap. After installing I noticed I couldn't close the bonnet, even without airfilter... So I took a test-drive without bonnet and the carbs moved to the garage on a shelf eating dust. On a LHD "400" with DCOE carbs you will find the same problem with the brake-master cilinder, but the manifold is chaped as a "swan-neck" and the brake-oil reservoirs are replaced to the left: Edited January 24, 2017 by H-400 Quote Link to comment Share on other sites More sharing options...
rutts Posted January 24, 2017 Share Posted January 24, 2017 Got a set of Sprint carbs also. If you fit weber dgas carbs they are lower allowing bonnet to close. Quote Link to comment Share on other sites More sharing options...
H-400 Posted January 24, 2017 Share Posted January 24, 2017 Thanks for the info! Maybe that manifold will be usefull! Quote Link to comment Share on other sites More sharing options...
D85CGV Posted January 25, 2017 Author Share Posted January 25, 2017 Are dgas carbs the ones that were fitted to the 1.8 engine. It sounds familiar. Regarding movement of servos etc I read somewhere that remotely mounted twin BMW servos do the trick down at the front near side of the bonnet. The master cylinder it's self remained in the same are but was positioned slightly differently using a bracket. That being said, this was on a car converted to a 16 valve engine so whether or not this would work on a CIH would remain to be seen. Quote Link to comment Share on other sites More sharing options...
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