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Discussion Starter · #1 ·
Here we go...(A) How difficult is it to find a replacement for the stock rear muffler? Mines toast and I'd like to keep my '72 GT in as original condition as possible. (B) How the heck does the windshield washer activate? I've looked in the two service manuals that I've bought and zippo info. (C) I've got cold start problems which indicates the auto choke ain't happy. Can that portion of the carb be disassembled, cleaned and reassembled without removing the whole carb(it's the stock Weber)? Your responses appreciated!
 

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Hi;
Just passing on some info, the rear muffler, you'll have to watch EBAY for one. BOSAL makes in in stainless steel, but, it's $$$$ I had a custom exhaust made for about the price of replacing the stock system. It has a "U" shaped piece for the rear that matches the openings, but, no rear muffler, just the front one. You can see mine at: community.webshots.com/user/bqs4 The windshield washer is a bellows under the foot pedal at your left foot. Yes it's also the "one wipe" feature too, but, you have to press on the pedal to squirt water out. As for the carb, you might alost want to check to see if the choke is adjusted right.
HTH,
Gene
 

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Discussion Starter · #3 ·
Yep, I found the bellows today which led me to the deteriorating washer tubes. Not to bad, just a few bad spots around the little spray nossels. Speaking of which one nossel has a busted stem. Those things are easy to find,eh? I'll check out the BOSAL unit. Is there a web site? It seems every GT I've looked at on Ebay has a dangleing rear muffler. Must be a common issue.
I've posted a few photos in the members gallery. This car has been giving me a few nice surprises with easy fixes. I was able to get a tail light and the back-up light working today just by re-seating and cleaning the bulbs!
 

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oldroadiedog said:
I was able to get a tail light and the back-up light working today just by re-seating and cleaning the bulbs!
A wire brush like the kind used for cleaning the inside of copper pipe fittings is a great addition to an Opel tool kit!
 

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Multiple Answers

(B) How the heck does the windshield washer activate?

As you have found out, there is a rubber bellows inside the foot pedal. One light push, and a "normally open" switch closes, and the wipers function. Great for when a passing semi sprays your windshield with muddy water! A harder push, and you compress the bellows, which theoretically squirts washer fluid on the windshield. But often the bellows (or more accurately, the hose connection on the bellows) deteriorates, and the rubber cracks. Then no more washer. Or, the check valve in the washer tubing fails. That can be easily fixed. The solution to a broken bellows is to simply buy an aftermarket washer pump, and either rig up a dash switch, or better still, install a push switch in place of the bellows. That's what I did with mine.


(C) I've got cold start problems which indicates the auto choke ain't happy. Can that portion of the carb be disassembled, cleaned and reassembled without removing the whole carb (it's the stock Weber)?

Well, the stock carb is a Solex, so if you have a Weber, you have half the battle won. If you have a water activated choke (which the Solex does have, as does the DGAV model of the Weber), it can usually be adjusted to function properly without disassembling the carb. So can the electric choke version of the Weber (DGEV). The choke can function properly, that is. The Solex is a lost cause, and one of the most typical complaints is with cold start, and especially with "warm" (between cold and hot) driveability. They stumble and fart around like a 90 year old bus driver! (apologies in advance to any bus drivers in the group). Replace the Solex with a Weber. More can be found in the Mechanical Section, under "Fuel System"

http://opelgt.com/forums/forumdisplay.php?s=&forumid=1131

HTH
 

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If you watch the German EBAY www.ebay.de and especially search under "Opel GT" there's a guy that posts auction frequently for odds and ends for GT's like the washer nozzles.
 

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rear muffler

I bought a complete exhaust,from front until rear muffler
from bosal exhaust pipes are chrome at the rera muffler,
cmplete with all the joints and rubbers
220 euro(bought in belgium):cool:
 

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muffler help

while futszing around on the net one day, I ran across this site
http://www.commercial.net/vault/exhaust/[/URL]

The name of the outfit is Double "S" Exhaust. They are located in B.C. Canada so maybe some of our Great Northern Buddies know something about them. The site lists Opel as one of the autos they make them for. Whole thing is Stainless Steel. Probably gonna have to Email or Call for a quote. Hope this helps Amigo.
:D
 

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Discussion Starter · #11 ·
You guys have been very helpful. I called Gil at Opel GT Source and he had it all. Rear muffler, tail pipe and rubber hangers. The price wasn't too bad. Once I get that hardware installed and the master cylinder rebuilt I'll be able to take my little jewel for a spin!:cool:
 

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Just my 2 cents worth on info for the muffler.
I bought one for my GT about 10 years ago which was a Walker Advantage Muffler, with a Lifetime Warranty. It is identical to the original. The part number is 21845 and there was a toll free number that would locate the nearest distributor nearest you, 1-800-422-2484. Whether the phone number is still valid I am not sure, but it wouldn't hurt to give it a try. It is also worth it to check out a muffler shop to have the part number checked. It should still be good.
 

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More pocket change

I had the stock muffler a friend took off his late model Camaro (when he upgradded to a Borla exhaust) I was planning on trying on a GT. It is the same configuration for the inlets and outlets, but obviously larger pipes. I got rid of it before I could try it, but if a muffler shop has one on hand you might want to check it out for a fit. It would give you an excuse to go to larger pipes anyway.
 
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