935 replies to this topic

[HUBBA.HUBBA]

Found an issue with fuel or oil dripping from the bottom of my carb or charger onto a nice hot plate above the exhaust minfold, so decided to split the 2 and reseal.
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Not great considering it's only done 50 miles.

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[HUBBA.HUBBA]

Did a little mod to the carb whilst I was at it. The plate holding the accelerator cable was starting to bend, so I bought a tiny m5 rose joint and using a spare couple of unused holes, I braced it. I would if anyone else with a vmax Weber kit has had the same issue.
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Edited by HUBBA.HUBBA, 27 July 2019 - 04:16 PM.

[Spider]

I'm far from having much experience with Webers (or similar) Carbs, but I was always of the impression that they shouldn't be hard mounted but soft mounted on O rings and Thackeray Washers ?

[timmy850]

My Dellorto has been hard mounted for the past 9 months and I've had no issues. 

[HUBBA.HUBBA]

I'm far from having much experience with Webers (or similar) Carbs, but I was always of the impression that they shouldn't be hard mounted but soft mounted on O rings and Thackeray Washers ?

Why's that? Are you referring to the way the carb is bolted to the charger?

Edited by HUBBA.HUBBA, 21 July 2019 - 10:45 AM.

[Spider]

 

I'm far from having much experience with Webers (or similar) Carbs, but I was always of the impression that they shouldn't be hard mounted but soft mounted on O rings and Thackeray Washers ?

Why's that? Are you referring to the way the carb is bolted to the charger?

 

 

As I did mention, I didn't have a lot of experience with them, but all the side droughts I've seen fitted and not just on Minis, have been soft mounted and yes, the way the carb is hard bolted up to the Charger.

 

Here's Weber's advice;-

 

https://www.weberper..._Adjustment.pdf

[nicklouse]

Side drafts should not be solid mounted.

[HUBBA.HUBBA]

There's a layer of sikaflex inbetween the two. That might absorb abit of vibration, hopefully.

[nicklouse]

There's a layer of sikaflex inbetween the two. That might absorb abit of vibration, hopefully.

Nope.

[HUBBA.HUBBA]

Oh well, I can see all of these kits being hard mounted. Looks like the holes on the carb have been milled out a bit, to either take the flange welded to the charger or to take bigger bolts. Do you think I should get those gaskets with the o ring built in then?

Edited by HUBBA.HUBBA, 21 July 2019 - 08:41 PM.

[Spider]

Oh well, I can see all of these kits being hard mounted. Looks like the holes on the carb have been milled out a bit, to either take the flange welded to the charger or to take bigger bolts. Do you think I should get those gaskets with the o ring built in then?

 

Maybe ask about this with the guy who does the Superchargers?

[nicklouse]

The issue with the fuel is because of the vibrations shacking the fuel out of the float chamber.

But I am sure the developer has worked this out an knows what they are doing.

But this is what I had when I first fitted a sidedraught carb on a Mini.

[Spider]

The issue with the fuel is because of the vibrations shacking the fuel out of the float chamber.

But I am sure the developer has worked this out an knows what they are doing.

But this is what I had when I first fitted a sidedraught carb on a Mini.

 

Now you mention this Nick, i recall my Brother had this issue. While he had the soft mount kit, he didn't realise the washers were a Thackeray Washer and how they worked. He did them up tight and the fuel would sometimes come out of the float chamber. Afte he was shown and backed them off, the issue went away.  Thinking back, this was a very long time ago - I was still in School !

[HUBBA.HUBBA]

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Edited by HUBBA.HUBBA, 27 July 2019 - 04:05 PM.

[HUBBA.HUBBA]

Much needed guttering on the bulk head. A bit of a design flaw on the Cub are the hinges for the bonnet. There is a rubber door seal on the bonnet which doesn't seal the hinges. Stretched some aluminium angle and bonded it on with sikaflex, put some D shaped seal along to create a channel.  20190727_133026_resized.jpg   62.61K   0 downloads  20190727_133035_resized.jpg   46.65K   1 downloads  20190727_133042_resized.jpg   37.1K   0 downloads  20190727_133055_resized.jpg   66.48K   0 downloads  20190727_134337_resized.jpg   75.33K   0 downloads

What ever it takes to hold it firm
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