| [ Total Views: 617 | Total Replies: 7 | Thread Id: 3956 ] |
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 wiseoldub
Fahrvergnugen
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| posted on February 23rd, 2003 at 08:52 PM |
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type 4 carbs, type three manifolds on a type 1?
can this be done? and does it improve that much?do you have to make up your own linkages? these vs twin dellortos vs duel throat webber? come on carb
specialists....this ones for you!!!!!
cheers josh
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on February 23rd, 2003 at 09:22 PM |
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Like everything with motors, it is all about combination!
More info about the motor would be nice 
what works well for a 1600cc may not for a 2000cc etc
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wiseoldub
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| posted on February 24th, 2003 at 07:34 AM |
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very good point, its a 1641 with a mild cam......upright of coarse!
cheers josh
[will be put into my split]
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Phil74Camper
Son of Jim - Creator of Good
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| posted on February 24th, 2003 at 01:41 PM |
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Twin carb Kombis have a slightly more complicated setup than just two separate carbs on two separate manifolds, like you would do with Webers or
Kadrons.
There is an extensive balancing system mounted above the crankcase, below the air cleaner, and there are several more balancing circuits that work
through the stock VW air cleaner. It works so well that if you disconnect anything with the motor running, it usually stalls.
There are in fact three separate idle circuits that all have to be synchronised on both carbs. And for primary idle and mixture settings, the LEFT
carb actually controls the RIGHT - you only adjust one of them and VW's balancing system does the rest. It's a very reliable system. Once
you set it up, it stays in tune (try that with Webers or Kadrons)
Now VW designed the venturis and jets for the characteristics of the Type 4 engine, an enormously strong, slow-revving, low compression engine of
either 1.7, 1.8 or 2.0 litres. VW changed the jets and pumps and even the butterflies for the three different sized engines.
You probably could bolt Kombi carbs onto your 1640, get the stock balance systems working and wire up the two or three solenoids on each. But would
the carbs, designed for low speed Kombis, suit the characteristics of your 1640, a small engine with an improved cam, more RPM and different
power/torque curve from Kombis? Doubt it.
Stick with twin Kadrons, or Webers if you can afford them. They are more suited to what you want.
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Phil74Camper
Son of Jim - Creator of Good
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| posted on February 24th, 2003 at 01:45 PM |
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Forgot to mention - stock VW Kombi twin carb linkage is also far better quality than any aftermarket twin carb linkage. It has dual internal spring
and cups to take out lateral slop, well-designed locating arms that attach directly to the Solex PDSIT carbs, quality LARGE ball and sockets on each
joint, and vernier adjusters on each locating link.
You could probably get it to fit a Type 3 (but they have their own system), but not a Type 1. The fan shroud is in the way.
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2443TT
A.k.a.: Ian
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| posted on February 24th, 2003 at 01:52 PM |
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A long time ago I ran a pair of 34mm kombi carbs on t3 manifolds on my 1641cc engine. The engine used a W110 engle cam.
The performance was no diferent than when I had a single carb, except that tuning was harder as the kombi carbs were pretty worn out.
Other problems I encountered was the manifolds when on the engine are too wide for the engine bay, so you need to modify the engine bay. Also due to
the limited space in a t1 engine bay, they were painful to tune.
I ended up changing them to kadrons. That made an imediate improvment, as well as they are much easier to tune.
Cheers,
Ian Swinkels.
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wiseoldub
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| posted on February 24th, 2003 at 08:50 PM |
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thanks guys, i thought this was the case , but have had others tell me different! twin 36 dellortos it is then!
cheers josh
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on February 24th, 2003 at 09:26 PM |
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No Kadrons, not dellortos !!. (36mm solex's) now marketed as EMPI products.:thumb
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wiseoldub
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| posted on February 25th, 2003 at 06:56 PM |
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huh?
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on February 25th, 2003 at 07:57 PM |
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After the advice given in previous posts you want Kadrons, not Dellorto's.
P.S. when I said "No Kadrons" I meant "No... (you want)Kadrons"
I need a few more of these
:beer:beer
[Edited on 25-2-2003 by Craig Torrens]
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wiseoldub
Fahrvergnugen
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| posted on February 26th, 2003 at 08:10 PM |
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oh sorry. got ya! not dellorto's?what about a 44 idf webber[duel throat] ?
do dellorto's take to much to tune?
cheers josh
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Craig Torrens
A.k.a.: Craig Torrens
Scirocco Rare
6 times Australian, 7 times State Hillclimb Class Champion
Posts: 8040
Threads: 347
Registered: January 10th, 2003
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Mood: Time to go Salt lake racing, and actually achieve a result.
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| posted on February 26th, 2003 at 08:27 PM |
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With the mild cam a single 44idf works well, Kadrons would still be preferable:thumb
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