Author Topic: Twin Carbís  (Read 1659 times)

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lhodgo

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Re: Twin Carbís
« Reply #15 on: March 06, 2018, 09:00:26 PM »
Any preference on fibre over paper gaskets and plastic over copper filters? I have both as a backup, wondering which to fit straight up? Thanks.

carlo rossi

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Re: Twin Carbís
« Reply #16 on: March 07, 2018, 11:20:53 AM »
all good I prefer fibre and copper
old school
current cars
red 83 gtv 2.0


previous cars
Red 76 1.2/1.5 alfasud ti
white 79 alfetta 2000
alfetta 74 1.8
escort Lotus twin cam
bikes
ducati 900 ss 1979
moto morini 3 1/2 sport 1975/6
Moto morini 3 1/2 valentini speciale 77 oh and a deltek rockhopper

lhodgo

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Re: Twin Carbís
« Reply #17 on: March 07, 2018, 04:43:48 PM »
Well Iíve got both, might go old school and keep the others as spares!

lhodgo

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Re: Twin Carbís
« Reply #18 on: March 12, 2018, 07:39:08 PM »
So Iíve got some aluminium mounts to upgrade from the original rubber ones and some 50mm extensions to increase the inlet and get some better performance (I hope). Question is, where does the rubber o ring seal? Against the carb (top one in image) against the extension (bottom one in image) or should I flip the entire layout and have the mount and o ring against the manifold?

Thanks

carlo rossi

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Re: Twin Carbís
« Reply #19 on: March 13, 2018, 01:55:22 PM »
between the carb and the ext tube is where the o ring goes
current cars
red 83 gtv 2.0


previous cars
Red 76 1.2/1.5 alfasud ti
white 79 alfetta 2000
alfetta 74 1.8
escort Lotus twin cam
bikes
ducati 900 ss 1979
moto morini 3 1/2 sport 1975/6
Moto morini 3 1/2 valentini speciale 77 oh and a deltek rockhopper

lhodgo

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Re: Twin Carbís
« Reply #20 on: March 14, 2018, 09:19:30 PM »
Hang on the top outlet or the bottom outlet in my photo? See how Iíve got two options in the image?

carlo rossi

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Re: Twin Carbís
« Reply #21 on: March 16, 2018, 03:59:08 PM »
generally its right between the carby and the manifold or the adapter
thats if i understand the question
current cars
red 83 gtv 2.0


previous cars
Red 76 1.2/1.5 alfasud ti
white 79 alfetta 2000
alfetta 74 1.8
escort Lotus twin cam
bikes
ducati 900 ss 1979
moto morini 3 1/2 sport 1975/6
Moto morini 3 1/2 valentini speciale 77 oh and a deltek rockhopper

lhodgo

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Re: Twin Carbís
« Reply #22 on: March 16, 2018, 08:37:33 PM »
My carbi mounts have a rubber Ďoí ring on ONE side only. Iím trying to work out if the rubber Ďoí ring pushes up against the carbi or against the 50mm extensions Iíve also added. Or are you saying I should have the 50mm extensions against the carbi, then the Ďoí ring side of the aluminium mount facing the manifold?

If you look at the photo,  the top outlet has the o ring facing the carbi with the lower outlet facing the 50mm extensions.

Trying to work out which is the correct option in that photo.

Thanks.

lhodgo

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Re: Twin Carbís
« Reply #23 on: March 16, 2018, 08:42:00 PM »
Iíve circled the o rings in red

LaStregaNera

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Re: Twin Carbís
« Reply #24 on: March 21, 2018, 09:34:42 AM »
Standard practice is to have the o-ring against the carb.
66 GT Veloce - in one piece now!
Katana, Gamma and Mito too.

Craig_m67

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Re: Twin Carbís
« Reply #25 on: March 21, 2018, 02:02:32 PM »
There's a lot of discussion on the AlfaBB (US) about the correct way to install aluminium carb mounts (vs rubber), and any issues that people then solved etc..

I've not installed them on either of my 105 Nords so have no experience to offer.

I only chime in as I remember it being very topical at one stage and I was considering it - in the end i did nothing, just drive  :)
(perhaps when the original [Pirelli?] rubber mounts were unobtanium)
'66 Duetto (lacework of doom)
'73 1600 GT Junior (ensconced)
'03 156 1.9JTD Sportwagon (daily driver)

bonno

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Re: Twin Carbís
« Reply #26 on: March 21, 2018, 04:06:52 PM »
Straight from the horses mouth regarding o-ring position relative to carby and manifold (eliminate vibration between engine and carburettor/s). Find attached link to the weber website on soft mount kit.
https://www.weberperformance.com.au/index.php?cPath=115_101
now
83 Alfetta GTV
05 156 JTS manual
past
00 156 selespeed
72 1750 GTV

carlo rossi

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Re: Twin Carbís
« Reply #27 on: March 22, 2018, 02:01:25 PM »
the top circle
immediatley after the carby either will do
but both the same is ideal
current cars
red 83 gtv 2.0


previous cars
Red 76 1.2/1.5 alfasud ti
white 79 alfetta 2000
alfetta 74 1.8
escort Lotus twin cam
bikes
ducati 900 ss 1979
moto morini 3 1/2 sport 1975/6
Moto morini 3 1/2 valentini speciale 77 oh and a deltek rockhopper

lhodgo

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Re: Twin Carbís
« Reply #28 on: March 24, 2018, 12:56:50 PM »
Awesome guys, thanks heaps!!!