Loose carb parts - buyer beware.

Engine discussion.

Loose carb parts - buyer beware.

by Harv » Tue Sep 01, 2015 4:11 pm

Ladies and gents,

Think of this post as a community service announcement.

A number of sellers (often via eBay) are now providing Stromberg carbs that have been overhauled. The products are typically either “nice and shiny” from being replated, or dull grey. Some of these carbs appear to have been acid dipped to clean them. If the acid dipping is too prolonged, the carb can be affected badly.

Many of the fittings in a Stromberg carb are a press-fit. The acid can eat out the area around the press fitting, leading to parts becoming loose. Some parts (like the drive plugs) will allow fuel to leak. Another significant risk is that parts become loose and fall into the carburettor throat. These bits can travel into the engine, and do horrific damage. One part that is very susceptible to this is the fuel bowl vent.

Please do not think that all carb overhaulers are making crap product. There are probably many of them doing a great job. However, I have now seen a number of sellers, including at least one “big name” where the carbs have loose parts. At least one engine has been destroyed due to this.

As a check, I’d recommend that anyone who has bought reco’d carbs should do the following. Remove the air cleaner, and take a look down the throat of the carb. You should be able to see a small pipe, jutting up diagonally in the carb throat (see photo below).
Image
This is the fuel bowl vent… the bit that can come loose and wreak havoc in your engine. Grab the vent pipe with your fingers, and try to wiggle it around. If there is any sign of movement, you are at risk of the vent coming loose. The carb will run OK (temporarily) with no vent pipe – it will have an increased tendency to slosh (overflow) fuel into the carb throat, and will tend to run slightly leaner. Under no circumstances should a vehicle be run with a loose bowl vent.

If anyone finds a loose vent, please let me know (no need to name and shame the vendor publicly though)… interested to see if the vendors mentioned above have more problems.

Cheers,
Harv
 
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Re: Loose carb parts - buyer beware.

by Harv » Wed Sep 02, 2015 7:26 am

Let me know what you find.... hope you find nothing loose. Other than the throttle valve (butterfly) screws, there is not too much else that can fall into the throat of a Strommie.

For the curious, this thread shows what can happen when one of the vents gets loose. The damage Pete sustained is what prompted me to start this thread.
http://forum.fefcholden.club/index.php?topic=25539.0

Cheers,
Harv
 
Posts: 487
Joined: Sun May 04, 2014 7:52 am

Re: Loose carb parts - buyer beware.

by brucey » Wed Sep 02, 2015 2:58 pm

Hi Harv, thanks for that tip, I purchased my recoed carby 8 or so months ago off eBay, from Sydney, very happy with it, but checked it all out after reading your post, all good.
Thanks again.
Bruce
 
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Joined: Thu Jul 03, 2014 3:46 pm

Re: Loose carb parts - buyer beware.

by Harv » Wed Sep 02, 2015 7:49 pm

Good news Bruce.

Most sellers are probably selling decent refurbished carbs. The ones who are not are frightening though.

Cheers,
Harv
 
Posts: 487
Joined: Sun May 04, 2014 7:52 am

Re: Loose carb parts - buyer beware.

by EJ_VE_EH » Thu Sep 03, 2015 12:55 am

I got mine refurbished a week ago in Sydney.
Checked it out tonight......all good. The vent seems rock solid.
I was worried for a moment !
Rgds.
 
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Joined: Sun Aug 16, 2015 8:36 pm

Re: Loose carb parts - buyer beware.

by Harv » Thu Sep 03, 2015 7:13 am

Good news EJ_VE_EH.

Out of curiosity, were your carbs done by Carb Service Company? Definitely recommend those guys... been doing grey motor carbs for over fifty years now.

Cheers,
Harv
 
Posts: 487
Joined: Sun May 04, 2014 7:52 am

Re: Loose carb parts - buyer beware.

by brucey » Thu Sep 03, 2015 1:12 pm

Hi Harv, purchased my carb from Allcarb in Melbourne no troubles with it what so ever. Thanks again
Bruce
 
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Joined: Thu Jul 03, 2014 3:46 pm

Re: Loose carb parts - buyer beware.

by brucey » Thu Sep 03, 2015 1:15 pm

Oh forgot to mention, I thought originally I purchased from Sydney, but it was Melbourne.
Bruce
 
Posts: 46
Joined: Thu Jul 03, 2014 3:46 pm

Re: Loose carb parts - buyer beware.

by EJ_VE_EH » Thu Sep 03, 2015 10:09 pm

Mine was from Extreme Fuel in Campbelltown.
He was recommended on other forums.
Nice guy, very easy to deal with. Carby seems perfect so far.
Rgds.
 
Posts: 39
Joined: Sun Aug 16, 2015 8:36 pm

Re: Loose carb parts - buyer beware.

by Harv » Sun Sep 06, 2015 4:19 pm

Good news.

Cheers,
Harv
 
Posts: 487
Joined: Sun May 04, 2014 7:52 am


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