[PROPEL]

Anybody familiar with H.u.G. manifolds out of Germany? These ones fit 40DCOEs to a 1.9L head. I couldn't find any info on the company (possibly they were bought out by dBilas?).

The manifolds are longer than the Irmscher shorties (left), but they still fit (barely) in a GT engine bay without cutting up the heater box.

So the choice will be longer intakes and virtually nonexistent air horns, or the opposite... short runners and ~1.5" trumpets. I realize that differences in each manifold design come into play... but in general, if the airflow "run" length remains unchanged between both options, how would the overall performance characteristics differ?

 

[PROPEL]

try that image again...

 

[baz]

hi have you though of going vertical? weber also do a nice range of downdraft carbs which may give you an option for largeer venturies without the air box being cut have a look for a comparison at link below

http://www.inter-ricambiltd.com/weber_carburetors1

 

[tekenaar]

OR how about this . . .

 

[kevinfier]

Otto,
That is just what I need. Got a spare you could part with?
Kevin

 

[tekenaar]

Sorry, no. Afraid it's a bit of a "one off"! Almost everything you see here is hand fabricated. Took most of 3 months to build and tune. Using Bosch rotor "rev limiter" to curb "loud pedal" happy footedness . . . a MUST!

 

[West Coast GT]

Tekenaar -
Wow, Now that's what I'm talking about. I'll take one of those setups to go, please. And supersize it too.

Is that a manual choke cable running across the valve cover?

 

[tekenaar]

Actually, that's the accelerator cable . . .

 

[baz]

tekenaar hope you dont mind this (Copyright of pics and all that)
it works as a faucet and just lets fuel dribble into the venturies

 

[tekenaar]

BUT he asked about the cable ACROSS the valve cover and that's the accelerator cable. I routed the cable for the choke behind the head, not across the valve cover. I fabricated this setup for my '72 GT in the photo.

 

[baz]

i know but i just thought i would show where the choke was as its not an obvious thing on a weber or dellorto side draft carb
no offense meant

 

[tekenaar]

NO offense taken, just didn't want to be misunderstood . . . like you.

Bummer that you're off the road!

 

[baz]

no worrys
very nice work bye the why
wouldn't it be good if all probs and missunderstandings were that easy to sort (a lesson for some who come here! maybe?)

 

[tekenaar]

BTW, DellOrto tuning was done with parts from your neck of the woods, Eurocarb LTD in Tilehurst, Reading. Only place with DellOrto parts I could find at the time, nothing in the States.

 

[baz]

thats the other end of country to me
i was lucky that i have a place 5 miles away that got me jets when i had the lotus engine in as that was dells as well
re jeted and rolling road setup for what was $45 but that was in 1985
they loved me when i went back 3 years ago with a 3.4 jag in the gt with 3 48 webers on the side (much rubbing of heads and scraching of manly bits to sort that as all carbs were jetted diff )still they did enjoy the test drive on o country road afterwards
BTW happy birthday for the other week

 

[oldopelguy]

alternate single side-draft

I ran across this today and thought it might make for an interesting single side-draft set-up on an Opel, for those guys looking:

 

[oldopelguy]

or this

Or if you didn't want it running parallel to the head:

 

[tekenaar]

Re: Alternate single sidedraft . . .

Kinda defeats the main purpose of the SD carb . . . most direct shot at the intake ports save dual SDs. Between the two shown, the parallel one is the better "airflow" choice because it adds one 90° bend whereas the second one shown adds a 90° bend AND a twist. Not real great when you're directing "wet" flow. Downdraft, synchonous carb is the best "flow" option with our standard manifolds, I'm afraid.

 

[rallye73]

Where did you run across those?

Darrin

 

[oldopelguy]

jam

http://www.jameng.com/products/index.phtml?section=12

I'd be curious to see what a single 40, 42, or 45mm sidedaft on the top adapter really flows like on an Opel. That much bigger of a carb, with both the adapter and the manifold ported nicely, and the straight shot of cold air into the carb might more than make up for the added turns.