All these jets!!(Weber Re-Jetting)

[madhatterpdc]

I received my "Performance Jet Kit" from RaceTEP today as well as a rebuild kit and a correct air filter. I'm a little confused about their selection of jets for my application (Low-comp, Pertonix, Sea level).

Primary
150 main
55 idle
180 air

Secondary
180 main
55 idle
180 air

Does this sound like it is going to be close? Those numbers just seem strange to me. Does anyone with more experience think this will work?

My life looks like a snowglobe that was shaken by the hand of god himself right now, so I am not sure when I will have time to actually tear down and rebuild a carb, but I wanted to see what everyone hear had to say about these jet sizes.

Any comments appreciated.

[opelenvy]

That definitely sounds wrong. I would go with the jets that Otto recommended earlier in the thread to me.
The ones RaceTep sent me were not correct either. I'm starting to wonder what goes into their selection process.

[Scott McDonald]

Mine were sized incorrectly as well.

[tekenaar]

Originally Posted by opelenvy That definitely sounds wrong. I would go with the jets that Otto recommended earlier in the thread to me. The ones RaceTep sent me were not correct either. I'm starting to wonder what goes into their selection process.

I'ts called CYA! Engine on rich side = less possibility of internal "combustion" damage . . . just uses more gas AND most likely won't pass smog test, though we no longer have to worry about that in most cases.

As stated already, the primary is a bit rich and the secondary is way rich. It took me some time to arrive at my jet selection and it was all done on Opel CIH engines. I doubt if Racetep has ever actually seen an Opel CIH engine.

[RallyBob]

FWIW, they've never really been close on the jetting for Opels. I've rejetted a number of Webers that had Racetep kits in them. Always far too rich.....

[madhatterpdc]

What's the best way for me to approach them and say "Hey, these jets are too big, gimme sizes ###"

First they are going to ask If I've installed them. If I say yes, then I cancel any hope of returning them. If I say no, then I'll get the "then how do you know they are too big?"

Or should my cheap ass not worry about the $$$ and just go ahead and buy the jets that are recommended by Otto.

[RallyBob]

Originally Posted by madhatterpdc First they are going to ask If I've installed them. If I say yes, then I cancel any hope of returning them. If I say no, then I'll get the "then how do you know they are too big?"

Seems to me if you say to them the car is running horribly rich and obviously the jets are wrong, then you have a solid argument for proper replacements.

Bob

[opeldean]

1-IS THERE ANOTHER VENDOR OF JETS BESIDES RACETEP?

2-I FOUND THEIR WEBSITE GREAT.I WAS TREATED VERY RUDELY ON 2
SEPARATE TIMES.THEY WERE NOT HELPFUL TO ME WHEN i ASKED 1 OR 2 QUESTIONS.i BOUGHT FROM THEM AND THEY SHIPPED RIGHT OUT.SO I GOT WHAT i PAID FOR.

3-TRY TEKAENNAR JETTING. IT KICKS BUTT.I REALLY HAVE NO REASON TO TRY ANYTHING ELSE...i DONT SEE HOW MY CAR COULD RUN ANY BETTER.MY CAR IS A TIRED 70 WITH A SPRINT,PORTED INTAKE,2 IN EXHAUST,PERTRONIX

4- TEKENAAR USES MUCH SMALLER AIR JETS THAN WHAT YOU MENTIONED,
I BELIEVE THIS IS WHAT MAKES IT RICHER.. FUELS JETS ARE SMALLER TOO,
MY GAS MILAGE IS BETTTER TOO.

5- i WOULD PREDICT RACETEP WOULD NOT TAKE BACK THE JETS...
6-MOST ECONOMICAL ROUTE IS TO BUY TEKENAAR JETS...THEN GO FROM THERE.

MY CAR WAS JETTED BY THE OLD OGTS IN THE 90'S ..THEY PUT IN:
PRIMARY(32) MAIN 140 AIR 170
SECONDARY(36) MAIN 140 AIR 180CAR RAN GOOD..BUT

THE SMALLER AIR JET IN A TEKENAAR JET ON THE SECONDARY RICHENS IT UP.

TEKAENEAAR FOLLOWS: THIS IS WHAT i USED.
PRIMARY(32)-MAIN 135 AIR 165
SECONDARY(36) MAIN 140 AIR 160

[opeldean]

MY OPINION:
THE GUY AT RACETEP TOLD ME IN A SMART A__ VOICE " I HAVE JETTED HUNDREDS OF OPELS!"..THEREFORE WHEN I ASKED THE THE SAME QUESTION ABOUT
PROPER SIZES..
HE SAID" DIDNT YOU HEAR WHAT I JUST SAID?"

SO MADHATTER: I HOPE YOU GET BETTER TREATMENT THAN i GOT..

[MICAH1]

Try this site to see if you like their prices and attitude..

http://www.dansperformanceparts.com/...ggyintake3.htm

[Travis]

I've purchased most of my weber parts from Greenfield Imported

http://www.gicp.com

It's been a while since I've been to their shop but they did have a few Opel DTM models and pictures of Ed Funks ITB Opel Manta on the wall. I was VERY surprised my first time there. Unfortunately, their web site is next to useless.

-Travis

[GTJIM]

If you want extreme service and good prices try "alfa1750" on EBay for Weber and Delorto second hand carb deals, kits and new parts.

Based in Italy (Weber's home!) and is awsome to deal with in my experience.

[kwilford]

Originally Posted by GTJIM If you want extreme service and good prices try "alfa1750" on EBay for Weber and Delorto second had carb deals, kits and new parts. Based in Italy (Weber's home!) and is awesome to deal with in my experience.

I bought a carb repair kit for my 38 DGAS from David G. and Gabriele (aka Alfa1750) on eBAy. It was only $10 plus $5 S&H, and was of excellent quality. And it made it from Italy to Canada in FOUR DAYS! I mean, FOUR DAYS! Letters don't make it from NorthWest Calgary to Downtown in FOUR DAYS! Amazing service, highly recommended. FOUR DAYS!

[nobody]

I would have to agree with GTJim I recently got a price from Gabriell aka alfa1750 for a bunch of jets for my twins. His prices for new were less by 50% of anyplace I've found. When your tuning twins alot of weber jets for cheap is a good thing. Two or three of everything, including more choke tubes was just over 200. I'll ask him about posting his Email address.

[nobody]

Just a follow up and a contact for whatever you could ask for Weber related.

Hi,
no problems what so ever-as far as i am concerned.
thanx for askng me.

Kind Regards,

Gabriele

italian.carburetors@tiscali.it
italiancarburetors@hotmail.com

[tekenaar]

Originally Posted by GTJIM If you want extreme service and good prices try "alfa1750" on EBay for Weber and Delorto second had carb deals, kits and new parts. Based in Italy (Weber's home!) and is awsome to deal with in my experience.

Italy's home to Dell'Orto (my SD carb preference) too!

[GTJIM]

So you have Dell'Ottos?

[tekenaar]

Originally Posted by GTJIM So you have Dell'Ottos?

Indeed I do . . . with Otto's jets, no less!

[GTJIM]

I am tossing up between 40mm DCOMs and Dell'Ortos at the moment.
Have a carton full of each from Gabriele in Italy. Which are prefered for the street and why?

[soybean]

From pg 4

Originally Posted by opelenvy When you separate the top of the carb from the bottom you can't miss the tube. It is the only one between the two sides of the carb. They recommend with their jet kit to pull the brass tube and fill the hole with JB weld. Voila, done!

OK I'll admit it, I'm dense. When you pull the brass tube to fill the hole with JB Weld are we talking about the whole tube with JB Weld? or the bottom, or the area where the tube went. I haven't disasembled my carb yet and am hoping to get to it over Thanksgiving, and trying to understand what I need to do. Thanks, Jarrell

[opelenvy]

Originally Posted by soybean From pg 4 QUOTE=opelenvy]When you separate the top of the carb from the bottom you can't miss the tube. It is the only one between the two sides of the carb. They recommend with their jet kit to pull the brass tube and fill the hole with JB weld. Voila, done!

OK I'll admit it, I'm dense. When you pull the brass tube to fill the hole with JB Weld are we talking about the whole tube with JB Weld? or the bottom, or the area where the tube went. I haven't disasembled my carb yet and am hoping to get to it over Thanksgiving, and trying to understand what I need to do. Thanks, Jarrell[/QUOTE]
A picture is worth a bunch of words, right. Here you go. The brass plug might be in that hole, or on the other half of the carb when yo pull it apart, it can go either way. I would assume that the JB Weld can be done on either side as well. All you are doing is blocking off that hole so no fuel will flow through that passage.
Oh, and the brass tube you pull is no longer needed.

[soybean]

Thanks George, you are correct, a picture is worth a thousand words. Explained it all. Thanks again, Jarrell

[bq97]

I blocked off the tube a slightly different way and it seams to work well. After pulling the tube I filled the insides of the brass tube with high temp solder and reinstalled it in the top cover after it cooled. I decided on this method for three reasons.
1. I didn't have any JB weld on hand.
2. It is less permanent. I can always bull out the soldered tube and instal an unmodified one if I like.
3. Instant gratification, didn't have to wait for the JB weld to cure. Five minutes after starting the mod I was driving the car to work.

Brian

[OrangPeEL]

Originally Posted by RallyBob It actually doesn't disable the power valve, that circuit is cast into the carb body and is separate from the brass tube. What it does do is disable the 'high-speed enrichment' circuit which never did work too well anyway..... Without a power valve, no amount of jetting will compensate for the horrendous bog you'd have without it...

I'm into my carb, chasing down a problem that I now don't think will be solved with jetting or circuit modification... but since I'm in there, might as well cover my bases!

I find I'm 1-step smaller than Otto's rcmnd. at both air and fuel in primary. (found secondary set up like suggested).
Regarding disabling (plug-off the tube... mine is still open) high-speed enrichment circuit on Weber 32/36. Otto, are your recommended jets with this modification in place? Should it matter... much?

Stock low-comp 1.9 at 0-1000 ft.

Thanks!
-Dan

[soybean]

I found it made a difference when I rebuilt mine according to the sizes that were reccomended, and plugging the tube as had been posted here. It took a litle playing around, and printing out the page here, http://www.carburetion.com/Weber/adjust.htm. But it seems to have better lower end power and feels strong to the redline. Jarrell