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| Aftermarket Side-draft carbs including Weber DCOE and DCOM and Dell'Orto |
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#1 (permalink) |
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1971 GT
Join Date: Feb 2003
Location: Trail, British Columbia
Posts: 533
![]() Provided Answers: 4
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Unanswered: Is this Solex 40DDH Side Draft toast?
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2.4 "Legere" Stroker - Weber DCOE45 - Getrag - Compufire - S10 Clutch |
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#2 (permalink) |
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Old Opeler
Join Date: Jun 2003
Location: New Zealand
Posts: 5,686
![]() Provided Answers: 12
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Soak It!
As this carb came from Germany there is a fighting chance that it is correctly jetted for the Opel motor.
Soak it in one of those pans of carb cleaner that are available - or just use standard Coke-a-Cola (TM). That should remove all the white powder and then you can assess if there has been too much corrosion. Carb Rebuilders can 'resurect' quite terrible looking carbs ... and make them look like new. An interesting project - keep us informed, Please!
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GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved |
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#3 (permalink) |
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1971 GT
Join Date: Feb 2003
Location: Trail, British Columbia
Posts: 533
![]() Provided Answers: 4
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Thanks Jim. I am kind of leaning toward doing it simply because it would be somewhat rare. It came bolted to an Irmscher SSD manifold and fits nicely on the 1.9 head so it was on an Opel at one time.
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2.4 "Legere" Stroker - Weber DCOE45 - Getrag - Compufire - S10 Clutch |
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#4 (permalink) | |
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Cunning Linguist
Join Date: Mar 2002
Location: Plano, TX 75074
Posts: 4,441
Real Name: Otto
![]() Provided Answers: 13
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1960: ♥ '61 Rekord PII 1.7 3S 3.9 ♥ '69 Kadett LS 'sprint' 1.9 3A 3.18 1970: ♥ '70 GT 1.9 4S 3.44 ♥ '72 GT 2.2SSD 5S 3.44 ♥ '72 GT 2.4FI 5S 3.44P 1980: ♥ '85 Bitter SC 3.9FI 5S 3.44P 2000: ♥ '09 Solstice GXP Coupe 2.0 SIDI VVT Turbo 5S 3.73P |
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#5 (permalink) |
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1971 GT
Join Date: Feb 2003
Location: Trail, British Columbia
Posts: 533
![]() Provided Answers: 4
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Your installation and comments are the reason that I searched out the SSD manifold in the first place! The Irmscher unit looks similar to yours and I love the look. This will be going on my 2.4 conversion, currently underway.
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2.4 "Legere" Stroker - Weber DCOE45 - Getrag - Compufire - S10 Clutch |
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#6 (permalink) |
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opel free after 26 years
Join Date: Jun 2002
Location: sunderland england
Posts: 4,941
Real Name: barry williams
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one 40 ddh might be a bit wimpy for a 2.4 engine
what size chokes are in it
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Copyright © 2003-2009 barry williams All Rights Reserved save praying to God for sunday today we pray to Nike and run like hell |
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#7 (permalink) | |
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Cunning Linguist
Join Date: Mar 2002
Location: Plano, TX 75074
Posts: 4,441
Real Name: Otto
![]() Provided Answers: 13
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Chokes and jets
If you look closely at my pic above, you'll see the welds at the carb mounts of the manifold. Mine was for a 1.9 and also used a 40mm carb originally, the most common setup used. I had it bored and welded for a 48mm carb, largest made by Dell'Orto.
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1960: ♥ '61 Rekord PII 1.7 3S 3.9 ♥ '69 Kadett LS 'sprint' 1.9 3A 3.18 1970: ♥ '70 GT 1.9 4S 3.44 ♥ '72 GT 2.2SSD 5S 3.44 ♥ '72 GT 2.4FI 5S 3.44P 1980: ♥ '85 Bitter SC 3.9FI 5S 3.44P 2000: ♥ '09 Solstice GXP Coupe 2.0 SIDI VVT Turbo 5S 3.73P Last edited by tekenaar; 11-07-2006 at 09:22 PM. |
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#8 (permalink) |
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1971 GT
Join Date: Feb 2003
Location: Trail, British Columbia
Posts: 533
![]() Provided Answers: 4
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OK - Getting depressed. I am assuming that to determine the choke size, the measurement is done at the narrowest point. I put my telescoping gauge down the venturi and measured around 28mm.
Is this the best way to tell or is the measurement done at some other point.
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2.4 "Legere" Stroker - Weber DCOE45 - Getrag - Compufire - S10 Clutch |
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#9 (permalink) |
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opel free after 26 years
Join Date: Jun 2002
Location: sunderland england
Posts: 4,941
Real Name: barry williams
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webers have the size cast into the choke insert , dont know about the solex but it may have it , the 28mm sounds about right for a standard 1.9 with no add ons
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Copyright © 2003-2009 barry williams All Rights Reserved save praying to God for sunday today we pray to Nike and run like hell Last edited by tekenaar; 11-08-2006 at 10:27 AM. Reason: chock = wedge |
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#10 (permalink) | |
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Cunning Linguist
Join Date: Mar 2002
Location: Plano, TX 75074
Posts: 4,441
Real Name: Otto
![]() Provided Answers: 13
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28mm choke is small for an SSD40 carb, 32mm is more the norm in all the ones I've seen, though your Solex is the first I've seen as an SSD. Can't imagine much difference in general between the SSD40 carbs used, Weber, Dell'Orto or Solex.
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1960: ♥ '61 Rekord PII 1.7 3S 3.9 ♥ '69 Kadett LS 'sprint' 1.9 3A 3.18 1970: ♥ '70 GT 1.9 4S 3.44 ♥ '72 GT 2.2SSD 5S 3.44 ♥ '72 GT 2.4FI 5S 3.44P 1980: ♥ '85 Bitter SC 3.9FI 5S 3.44P 2000: ♥ '09 Solstice GXP Coupe 2.0 SIDI VVT Turbo 5S 3.73P |
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#11 (permalink) |
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1971 GT
Join Date: Feb 2003
Location: Trail, British Columbia
Posts: 533
![]() Provided Answers: 4
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This is the choke insert from the carb. (At least, if this was a Weber, this is the piece identified as the choke on those diagrams)
It has no markings on it, but the internal diameter is 37 mm. Does this mean the choke size is 37 despite the fact that the venturi narrows a bit toward the butterflies?
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2.4 "Legere" Stroker - Weber DCOE45 - Getrag - Compufire - S10 Clutch |
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#12 (permalink) |
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opel free after 26 years
Join Date: Jun 2002
Location: sunderland england
Posts: 4,941
Real Name: barry williams
![]() Provided Answers: 4
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no the size is the smallest dia. inside the choke bore
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Copyright © 2003-2009 barry williams All Rights Reserved save praying to God for sunday today we pray to Nike and run like hell |
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#13 (permalink) |
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1971 GT
Join Date: Feb 2003
Location: Trail, British Columbia
Posts: 533
![]() Provided Answers: 4
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Made some progress. The parts are labeled a bit different thanthe Webers. I got the venturi out and it is stamped 27.5 so I'm on the hunt for bigger ones.
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2.4 "Legere" Stroker - Weber DCOE45 - Getrag - Compufire - S10 Clutch |
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#14 (permalink) |
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opel free after 26 years
Join Date: Jun 2002
Location: sunderland england
Posts: 4,941
Real Name: barry williams
![]() Provided Answers: 4
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you could have a M/C shop open them out to 34/5 mm on a lathe and polish them if you cant find any
they just need to be opened to the same point/shape in the bore for the venturi to work ![]()
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Copyright © 2003-2009 barry williams All Rights Reserved save praying to God for sunday today we pray to Nike and run like hell |
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#15 (permalink) | |
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Cunning Linguist
Join Date: Mar 2002
Location: Plano, TX 75074
Posts: 4,441
Real Name: Otto
![]() Provided Answers: 13
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Caveat: Your 2.4 capacity may offset this 85% rule somewhat . . . bigger pump, more air flow! Personally I wouldn't increase the ID of your chokes over 34mm as it will limit its possible future use on a smaller displacement engine. You never know!
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1960: ♥ '61 Rekord PII 1.7 3S 3.9 ♥ '69 Kadett LS 'sprint' 1.9 3A 3.18 1970: ♥ '70 GT 1.9 4S 3.44 ♥ '72 GT 2.2SSD 5S 3.44 ♥ '72 GT 2.4FI 5S 3.44P 1980: ♥ '85 Bitter SC 3.9FI 5S 3.44P 2000: ♥ '09 Solstice GXP Coupe 2.0 SIDI VVT Turbo 5S 3.73P Last edited by tekenaar; 11-09-2006 at 02:00 PM. Reason: addl info |
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#16 (permalink) |
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Old Opeler
Join Date: Jun 2003
Location: New Zealand
Posts: 5,686
![]() Provided Answers: 12
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Critical ....
The internal profile of the venturi is quite critical - just 'hogging' them out to 34mm will not be too good!
Try alpha1750 on eBay and see if he can supply real 34mm Solex venturii - you may be surprised how inexpensively he can supply parts ... and how quickly they arrive.
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GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved |
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#17 (permalink) |
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1971 GT
Join Date: Feb 2003
Location: Trail, British Columbia
Posts: 533
![]() Provided Answers: 4
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Thanks Jim - I do have alpha1750 tracking down a few items for the carbs including the 34 mm chokes. Keeping my fingers crossed. The internals of the carb are actually quite clean so if I can get the parts and figure out all of the connections it should work.
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2.4 "Legere" Stroker - Weber DCOE45 - Getrag - Compufire - S10 Clutch |
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#18 (permalink) |
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Opeler
Join Date: Jul 2006
Location: toronto, ontario
Posts: 20
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i can R&R it for you and hog out the chokes
btw they are german solex ddh's so the ones alfa1750 sells in fleabay are italian and the parts are not interchangeable with the german ones, are you sure you got the right gaskets? they should say solex 40 ddht.
i have been rebuilding carbs for over two decades now and i do a lot of the german solex ddh/t's for bmw 2002 guys. i am in whitby,on. you are in bc? email me. i do have the proper gaskets too. dave |
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#19 (permalink) |
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1971 GT
Join Date: Feb 2003
Location: Trail, British Columbia
Posts: 533
![]() Provided Answers: 4
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Well - it's all a matter of timing I guess.
I have discovered the hard way that the Italian parts won't fit. I really had no idea that the carb I have was German until I started to research it a bit. I found a source of the parts in Germany and thanks to tremendous help on this from GT.com member Heimue, I managed to order, just tonight, a rebuild kit and some jets for the carb. I am assuming that it's original application was a VW K70. Is that correct? The 32mm chokes that I got from Italy fit fine so I am OK for those. I will certainly get in touch with you if I need anything. If you can PM me cost on rebuild kits etc, I can probably catch Heimue before he orders them for me if there is a price diff. Thanks for the offer. I will probably take you up on your expertise at some point. Corey
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2.4 "Legere" Stroker - Weber DCOE45 - Getrag - Compufire - S10 Clutch |
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