[Fot] FW: TR6 Cannon Intake Manifold

[Keith Files]

Hi Marcel,

Nearly every race TR5/6 here in the UK runs triple Weber 45’s including myself so it is definitely the day forward. Not sure about the manifold though as I have not heard of it.

Keith.
> On 16 Sep 2015, at 09:18, Van Mulders Marcel <van.mulders.marcel at telenet.be> wrote:
> 
> Thanks to the Fot members for their reactions : most are warnings that triple 45 Webers may be too big on a TR6 engine. But it is a race engine (2720cc) and the owner has already bought 3 good secondhand 45 Webers with identical progression holes : 36mm main venturi's seem  to be a reasonable starting point in this case? If necessary, he can go down to 34mm in 45 Webers.
>  I've seen TR6 racecars with 45 Webers and I wonder if the Cannon manifold, with 40mm diameter bores on the carburetor side, can be reamed to 45mm?
> Another question : the valve seat pressure on my TR4A racecar is 35 kgs/77 lbs. I've also a cylinderhead with only 25 kgs/55lbs seat pressure. The springs on both cylinderheads are 5.25kg/mm (290lbs/").
> Do you think 25kgs seat pressure is enough?
> Marcel
>  
> 
> Van: Van Mulders Marcel [mailto:van.mulders.marcel at telenet.be] 
> Verzonden: woensdag 9 september 2015 17:32
> Aan: 'fot at autox.team.net'
> Onderwerp: TR6 Cannon Intake Manifold
> 
> I have to install triple  Webers DCOE 45 on a TR6 engine. The owner has also provided a Cannon one piece intake manifold with balance pipes. The bore of the runners is 40mm on the carburettor side and 31.5mm on the cylinderhead side.
> Can these runners be reamed to 45mm/34mm? If not, are there other inlet manifolds available?
> Marcel.
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