Weber 40 DC's

ronskydivepops · 09-03-2006

Just wondering if the NOS weber 40 DC's up for sale by CIARA in the ads section are too complex for a begginer. I'm building a 2.0 from a 1.9 and just wondering if I should stay witht the 32/36 weber I have or step up to something more complex??

ConreroGT · 09-03-2006

If YOU'RE building the 2.0 up from a 1.9 then no, the twin Webers are really not that complex. The 3 main areas of the Webers that might be difficult from least to high are (IMHO): Sync'ing/mixture, Throttle cable setup, Jetting.

You might have some other minor issues like thermostat housing location (It might be in the way of the intake manifold) and the heater blower fan if your in a GT. (might have to cut it out.)

Otherwise, it's really not that hard.

opelnut10 · 09-03-2006

Those appear to be the short manifolds which will clear the heater box, you may have to look at some other air cleaners, but the carbs. will clear. If they came off an Opel you may get lucky and have them be close on jetting and venturi. Linkage and balance is another matter and not for the average driveway-backyard mechanic. They are a very good setup (if they are right) and impressive to look at, but they can be a bear (for drivability) until you do get them right.

opeldean · 09-03-2006

this looks a like a great deal to me. The carbs look real clean.
Dual side drafts are easier to make your car run good ,than a 32/36 because you can control the fuel to each port.No electrical crap! what could be more simple..the carb really only goes back together 1 way..i rebuilt 2 at once, first time . this carb is WAY easier to rebuild than a 32 /36 too.
Ron:I have seen your woodworking skills...you can EASILY install the side drafts. we got photos all over the site.

1-All you need are simple hand tools, weiland filters from a mg-triumph,a thermo housing(availible in canada,i think..forgot the name),and a manometer in the ads
2- order my jets from gabriel
3- my car is rock solid,w/o needed adjustmets..runs dam good

worst case scenario...local english car restorers can help you..its a common set up

go for it, best performance $400 upgrade you can do for an opel

GTJIM · 09-03-2006

Better make up your mind - FAST

Now you have let the Opel World know about the super deal there will be a stampede.

Possibly, the only better set-up is a single DCOE but the manifolds for that are really hard to find.

ronskydivepops · 09-03-2006

Oops!

Didn't know they were that popular. If I had the $ I'd snatch them up. But, since I just spent my allowance for a short block, I guess I'll have to wait. Maybe Santa will bring me some for xmas!!

spdkilz02 · 09-04-2006

dont worry ron, i still got mine and prolly will for awhile...seems like not many people like to drop that money on the carbs and everything...only difference with mine is the longer intakes and i have the air horns for them and jetted for a 2.0

ronskydivepops · 09-04-2006

They got sold in a heart beat. Maybe Santa bought them to give to some lucky kid. Unfortunately, it's not me. Guess I'll have to keep my eyes open.

GTJIM · 09-04-2006

New Webers are about $400 apiece and the manifolds can go for up to $300 .. for used ones .... do the math!

Just found this pair of NEW 40mm DCOMs here .. originally for an Alfa Romeo "75 TwinSpark" $US525 for the pair .. and I thought they were a bargain!

ronskydivepops · 09-04-2006

Where did you find them at GTJIM?

GTJIM · 09-04-2006

Originally Posted by ronskydivepops

Where did you find them at GTJIM?

Found them on the local, New Zealand "TradeMe" buy and sell web site - could not believe my eyes as I have seen them on eBay.UK for nearly GBP500

$NZ850 = $US525 ... today - plus FREE Postage!

GBP500 = $NZ 1,425 .. today - Plus Postage would have been another GBP50
.. around $US1,000

So I got them locally for 1/2rd the price .. and delivered too.

Yeh - Haw!

That is what Credit Cards are for ...

http://www.trademe.co.nz/Browse/List...px?id=68553147

Here are the EBay.UK ones:

http://cgi.ebay.com/WEBER-40-DCOM-CA...QQcmdZViewItem

baz · 09-04-2006

i got to stop using the one left from the 2 pair i got for the old jag engine as a door stop and get it on e bay

ronskydivepops · 09-04-2006

I think the fish is leary of it! Maybe he wants it as a filter pump for his tank!!

baz · 09-04-2006

it might work as an aerator to put bubbles in i suppose

GTJIM · 09-04-2006

Brings a new dimension to the saying: "Fish eyed"

spdkilz02 · 09-05-2006

ok since those sold, ill mention mine here again...i have a pair of 40 dcoms that have been rebuilt and cleaned jetted for a built 2.0 (these are from the guy in Italy so u know they are good), with mainfolds (not shorties), and the air horns for them. ill sell everything for 500 plus shipping OBO...i have about 650 in them and they r still sitting in the box, so im sure someone can use them...

tekenaar · 09-06-2006

Originally Posted by spdkilz02

ok since those sold, ill mention mine hear again...i have a pair of 40 dcoms jetted for a built 2.0, with mainfolds (not shorties), and the air horns for them. ill sell everything for 500 plus shipping OBO...

I hear you posted here . . .

jake · 09-06-2006

The big difference is that they were brand new never used carbs with stacks inside air cleaners. Great deal.

tekenaar · 09-06-2006

Originally Posted by GTJIM

Better make up your mind - FAST

Now you have let the Opel World know about the super deal there will be a stampede.

Possibly, the only better set-up is a single DCOE but the manifold for that is real hard to find.

Especially the short one (Steinmetz, ao.) that'll fit a GT without heater box mods!

Hapazard · 03-20-2008

have a couple used webers off a manta with gt drive train you can email me 2 skullswolf@yahoo.com i might gave the intakes too gotta check.

bigjim5551212 · 10-16-2008

stay away from DCOM carbs. Stay away from any DCOE that has high number after DCOE like higher than 70, except 149, 151, 152

PROPEL · 10-16-2008

Originally Posted by bigjim5551212

stay away from DCOM carbs.

What's wrong with DCOMs?

jordan · 10-16-2008

I have not worked with dcoms though I hear they are great for tuning. What is the problem with them?

deaner · 10-16-2008

Originally Posted by bigjim5551212

stay away from DCOM carbs. Stay away from any DCOE that has high number after DCOE like higher than 70, except 149, 151, 152

Why? please explain.

bigjim5551212 · 10-17-2008

on the DCOM carburetors, there are a lot of parts that are not available for replacement or repair in North America. parts such as pump jets, are different as well the carbs do not use pump exhaust valves. The venturies are different as well. The other big thing is that these carbs have diaphragm pumps. Something that is not the best thing for an all out performance carburetor IMHO. Not many companies have repair kits either, however we do.

On the higher number DCOE carbs, you have to do a lot of extra tuning as these carburetors were designed as pollution control carburetors. They have emulsion tubes and idle jets that are a lot different that what North American suppliers have

09-03-2006	#1 (permalink)
ronskydivepops Destiny is to Fly Join Date: Mar 2005 Location: Sanford, Florida Posts: 290	Unanswered: Weber 40 DC's Just wondering if the NOS weber 40 DC's up for sale by CIARA in the ads section are too complex for a begginer. I'm building a 2.0 from a 1.9 and just wondering if I should stay witht the 32/36 weber I have or step up to something more complex??

09-03-2006	#3 (permalink)
opelnut10 Living in the past Join Date: Oct 2005 Location: Chesapeake, Virginia Posts: 1,372 Real Name: Lloyd Provided Answers: 2	Weber 40's Those appear to be the short manifolds which will clear the heater box, you may have to look at some other air cleaners, but the carbs. will clear. If they came off an Opel you may get lucky and have them be close on jetting and venturi. Linkage and balance is another matter and not for the average driveway-backyard mechanic. They are a very good setup (if they are right) and impressive to look at, but they can be a bear (for drivability) until you do get them right. Last edited by tekenaar; 10-16-2008 at 11:55 AM. Reason: diveway-backyard

09-03-2006	#4 (permalink)
opeldean 1000 Post Club Join Date: Apr 2003 Location: Overland Park KS Posts: 1,999 Provided Answers: 1	thermostat housing needed this looks a like a great deal to me. The carbs look real clean. Dual side drafts are easier to make your car run good ,than a 32/36 because you can control the fuel to each port.No electrical crap! what could be more simple..the carb really only goes back together 1 way..i rebuilt 2 at once, first time . this carb is WAY easier to rebuild than a 32 /36 too. Ron:I have seen your woodworking skills...you can EASILY install the side drafts. we got photos all over the site. 1-All you need are simple hand tools, weiland filters from a mg-triumph,a thermo housing(availible in canada,i think..forgot the name),and a manometer in the ads 2- order my jets from gabriel 3- my car is rock solid,w/o needed adjustmets..runs dam good worst case scenario...local english car restorers can help you..its a common set up go for it, best performance $400 upgrade you can do for an opel __________________ Thank you members of opelgt.com for helping me on a 5 year reconstruction of the most beautiful car in the world Celeste: 1917,cc ,getrag resealed, 2liter Intake valves,ported,ISKY cam on solids,Opel forged rods,9.52 compression,total seal gapless,oil dam,RB gasket mod., DCOE side drafts,sprint,2in straight exhaust,pertronix,OMNI paint,SACHS clutch,OGTS & Kadette sway bars,Manta finned pan,3 V clock,Ball joints and Poly all... SAA-WEET! Last edited by tekenaar; 10-16-2008 at 11:58 AM. Reason: worse

09-03-2006	#5 (permalink)
GTJIM Old Opeler Join Date: Jun 2003 Location: New Zealand Posts: 5,686 Provided Answers: 12	Buy Fast! Better make up your mind - *FAST* Now you have let the Opel World know about the super deal there will be a stampede. Possibly, the only better set-up is a single DCOE but the manifolds for that are really hard to find. __________________ GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved Last edited by tekenaar; 10-16-2008 at 11:51 AM. Reason: real hard

09-03-2006	#6 (permalink)
ronskydivepops Destiny is to Fly Join Date: Mar 2005 Location: Sanford, Florida Posts: 290	Oops! Didn't know they were that popular. If I had the $ I'd snatch them up. But, since I just spent my allowance for a short block, I guess I'll have to wait. Maybe Santa will bring me some for xmas!! Last edited by tekenaar; 10-16-2008 at 11:49 AM. Reason: Opps

09-03-2006	#2 (permalink)
ConreroGT Senior Contributor Join Date: Mar 2003 Location: Wa Posts: 659	If YOU'RE building the 2.0 up from a 1.9 then no, the twin Webers are really not that complex. The 3 main areas of the Webers that might be difficult from least to high are (IMHO): Sync'ing/mixture, Throttle cable setup, Jetting. You might have some other minor issues like thermostat housing location (It might be in the way of the intake manifold) and the heater blower fan if your in a GT. (might have to cut it out.) Otherwise, it's really not that hard.

09-04-2006	#7 (permalink)
spdkilz02 1000 Post Club Join Date: Dec 2002 Location: Akron, OH Posts: 1,734	dont worry ron, i still got mine and prolly will for awhile...seems like not many people like to drop that money on the carbs and everything...only difference with mine is the longer intakes and i have the air horns for them and jetted for a 2.0 __________________ Adam

09-04-2006	#8 (permalink)
ronskydivepops Destiny is to Fly Join Date: Mar 2005 Location: Sanford, Florida Posts: 290	They got sold in a heart beat. Maybe Santa bought them to give to some lucky kid. Unfortunately, it's not me. Guess I'll have to keep my eyes open.

09-04-2006	#10 (permalink)
ronskydivepops Destiny is to Fly Join Date: Mar 2005 Location: Sanford, Florida Posts: 290	Where did you find them at GTJIM?

09-04-2006	#13 (permalink)
ronskydivepops Destiny is to Fly Join Date: Mar 2005 Location: Sanford, Florida Posts: 290	I think the fish is leary of it! Maybe he wants it as a filter pump for his tank!!

09-04-2006	#14 (permalink)
baz opel free after 26 years Join Date: Jun 2002 Location: sunderland england Posts: 4,941 Real Name: barry williams Provided Answers: 4	it might work as an aerator to put bubbles in i suppose __________________ 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; 10-16-2008 at 11:44 AM. Reason: airator

09-04-2006	#15 (permalink)
GTJIM Old Opeler Join Date: Jun 2003 Location: New Zealand Posts: 5,686 Provided Answers: 12	Brings a new dimension to the saying: "Fish eyed" __________________ GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved

09-05-2006	#16 (permalink)
spdkilz02 1000 Post Club Join Date: Dec 2002 Location: Akron, OH Posts: 1,734	ok since those sold, ill mention mine here again...i have a pair of 40 dcoms that have been rebuilt and cleaned jetted for a built 2.0 (these are from the guy in Italy so u know they are good), with mainfolds (not shorties), and the air horns for them. ill sell everything for 500 plus shipping OBO...i have about 650 in them and they r still sitting in the box, so im sure someone can use them... __________________ Adam Last edited by spdkilz02; 09-06-2006 at 09:07 PM.

09-06-2006	#18 (permalink)
jake Opeler Join Date: Apr 2003 Location: Los Angeles , Calif Posts: 5	The big difference is that they were brand new never used carbs with stacks inside air cleaners. Great deal.

03-20-2008	#20 (permalink)
Hapazard Opeler Join Date: Mar 2008 Location: Alaska Posts: 1	I got a pair of 40dcob-149 4 sale have a couple used webers off a manta with gt drive train you can email me 2 skullswolf@yahoo.com i might gave the intakes too gotta check.

10-16-2008	#21 (permalink)
bigjim5551212 Weber Carburetor Guru Join Date: Jan 2008 Location: Vancouver Canada Posts: 129 Provided Answers: 1	stay away from DCOM carbs. Stay away from any DCOE that has high number after DCOE like higher than 70, except 149, 151, 152

10-16-2008	#23 (permalink)
jordan Moderator Join Date: Mar 2003 Location: corning ny 14830 Posts: 2,182 Provided Answers: 1	I have not worked with dcoms though I hear they are great for tuning. What is the problem with them? __________________ 1970 Opel GT 1.9 1980 Moto Guzzi V50 2000 Saab 9-3 2.0 turbo 2000 KTM 200 exc STOLEN

10-17-2008	#25 (permalink)
bigjim5551212 Weber Carburetor Guru Join Date: Jan 2008 Location: Vancouver Canada Posts: 129 Provided Answers: 1	on the DCOM carburetors, there are a lot of parts that are not available for replacement or repair in North America. parts such as pump jets, are different as well the carbs do not use pump exhaust valves. The venturies are different as well. The other big thing is that these carbs have diaphragm pumps. Something that is not the best thing for an all out performance carburetor IMHO. Not many companies have repair kits either, however we do. On the higher number DCOE carbs, you have to do a lot of extra tuning as these carburetors were designed as pollution control carburetors. They have emulsion tubes and idle jets that are a lot different that what North American suppliers have Last edited by bigjim5551212; 10-17-2008 at 03:31 AM.

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