dual carb intake manifolds

Lasse H · 03-11-2003

Which sidedraft intake manifolds would fit easier into the engine room of a GT:
-short 80mm (3.2") long pair (by Irmscher)
or
-98mm (3.9") long manifolds those lift carburetors about 2cm (0.8") from normal height? I guess these have been originally made for Kadett B.
or
-130mm (5.1") long "normal" manifolds

It's hard to try to estimate what fits and what doesn't because there is no engine in the car at the moment and I don't have any good pictures from which I could even see that area clearly.
Would that 2 cm lift prevent carbs/aircleaners from hitting to the inside of fender, or is that even a problem? Or would it only make the rear carburetor (DHLA 40) hit the engine hood opening bar over it?
Another option would be 130mm long manifolds, but in that case some body cutting & welding, etc. would be needed to make aircleaners fit, right? That's something I hope to avoid.

BQS4 · 03-11-2003

If you want to avoid any cutting, you'll have to go with the shorties. Contact Otto Bartsch. He has some excellent pictures of his installation.

Jerry C · 03-12-2003

I have the intake and exhaust off my car at the moment, so i measured it for you. From the back or the #4 intake port to the side of the heater heater box there is 9 in. ( 230 MM ) room for your carb set-up. Hope this helps.

skidmark · 03-13-2003

How do you contact Otto Bartsch, he's not in the members list

BQS4 · 03-13-2003

He lists his e-amil as:
de.tekenaar@verizon.net

Gary · 03-13-2003

Originally posted by skidmark
How do you contact Otto Bartsch, he's not in the members list

His user name is tekenaar.
Here's a link to his profile:http://www.opelgt.com/forums/member....o&userid=11126

Lasse H · 03-13-2003

Thanks willis!
230mm isn't too much... Carbs and gaskets take about 125mm so there will be 105mm or so for air cleaner and manifold. Looks like those 80mm Irmschers would be the best option, then moving engine a bit to left if possible and a minor bodywork should be enough. I just wish that short intake doesn't hurt low-end torque very badly. But well, at least finding a longer intake should't be a problem if I someday want to try that.

03-11-2003	#1 (permalink)
Lasse H Opeler Join Date: Mar 2002 Location: Finland, Häme Posts: 51	Unanswered: dual carb intake manifolds Which sidedraft intake manifolds would fit easier into the engine room of a GT: -short 80mm (3.2") long pair (by Irmscher) or -98mm (3.9") long manifolds those lift carburetors about 2cm (0.8") from normal height? I guess these have been originally made for Kadett B. or -130mm (5.1") long "normal" manifolds It's hard to try to estimate what fits and what doesn't because there is no engine in the car at the moment and I don't have any good pictures from which I could even see that area clearly. Would that 2 cm lift prevent carbs/aircleaners from hitting to the inside of fender, or is that even a problem? Or would it only make the rear carburetor (DHLA 40) hit the engine hood opening bar over it? Another option would be 130mm long manifolds, but in that case some body cutting & welding, etc. would be needed to make aircleaners fit, right? That's something I hope to avoid.

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03-11-2003	#2 (permalink)
BQS4 Southern Red Neck Join Date: Mar 2002 Location: Snellville, GA Posts: 6,029 Real Name: Gene Provided Answers: 12	If you want to avoid any cutting, you'll have to go with the shorties. Contact Otto Bartsch. He has some excellent pictures of his installation.

03-12-2003	#3 (permalink)
Jerry C Opeler Join Date: Jun 2002 Location: Johnston City, IL Posts: 234	I have the intake and exhaust off my car at the moment, so i measured it for you. From the back or the #4 intake port to the side of the heater heater box there is 9 in. ( 230 MM ) room for your carb set-up. Hope this helps.

03-13-2003	#4 (permalink)
skidmark Reborn Opeler Join Date: Jan 2003 Location: Damascus, Oregon Posts: 31	How do you contact Otto Bartsch, he's not in the members list

03-13-2003	#5 (permalink)
BQS4 Southern Red Neck Join Date: Mar 2002 Location: Snellville, GA Posts: 6,029 Real Name: Gene Provided Answers: 12	He lists his e-amil as: de.tekenaar@verizon.net

03-13-2003	#7 (permalink)
Lasse H Opeler Join Date: Mar 2002 Location: Finland, Häme Posts: 51	Thanks willis! 230mm isn't too much... Carbs and gaskets take about 125mm so there will be 105mm or so for air cleaner and manifold. Looks like those 80mm Irmschers would be the best option, then moving engine a bit to left if possible and a minor bodywork should be enough. I just wish that short intake doesn't hurt low-end torque very badly. But well, at least finding a longer intake should't be a problem if I someday want to try that.

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