Re: V8 carburettor pots
"Richard Brookman" <email@example.com> wrote in message
> so Andy.Smalley was, like...
>> "Richard Brookman" <firstname.lastname@example.org> wrote in message
>>> so Shayne was, like...
>>>> 15w40 ?
>>>> engine oil ah ok i always understood they required a thinner oil
>>>> to allow a faster responce
>>> Other way round. Thicker oil means the damper rises more slowly,
>>> which means the mixture is richer for longer when you need it.
>> Shouldn't that be "Thicker oil means the damper rises more slowly,
>> which means the mixture is LEANER"
>> there's more fuel when the piston is at the top and the needle is
>> further out
> It's a while since I messed with these type of carb, but I thought the
> purpose of the damper was to keep the mixture nice and rich for a few
> moments when you pressed the loud pedal. BICBVW.
> Disco 300 Tdi auto
> S2a 88" SW
> Tiggrr (V8 trialler)
I think that is the case, in which thicker oil will cause the damper to act
slower therefore keeping it richer slightly longer. I seem to recall over
the years different oil was specified, from something as thin as 3 in 1 type
to ATF to 20/50. I also read thicker oil is more suitable for (a) a worn
carb and (b) lower rpm.
In my 90 V8 (SU's) I use GTX which seems to work ok.