Re: Even more Sereis 3 troubles
You know I shall have to take a look at my manifold some time to see if it
is doing that as I run on cheapo unleaded only. I have got to sort out my
own overheating problem eventually as one day that needle is going to go a
little too far over but just have not had the time or the inclination lately
Series 3 rust and holes
"Samuel" <email@example.com> wrote in message
> Good afternoon.
> Sorry to be pestering about this problem, but i am still drawing blanks.
> series 3 2.6 litre straight six. i rebuilt carbureutor, put new set of
> points and condensor and the motor is in excellent mechanical condition.
> is getting a good strong spark from each cylinder and the vacuum advance
> working. when motor is revved, timing advances by about 10-15 degrees. but
> the problem remains, the manifold is still glowing red hot after about 10
> mins of driving at 80ks an hour on flat.
> i have played with timing, tried it from about TDC all the way through to
> degrees BTDC, played with the mixture, all the way from lean as it will go
> to just before the setting screw falls out. at settings, the motor runs
> reasonably smoothly, but still has the glowing manifolds. the motor is
> staying within it's normal operating range, which is quite cool.
> the one last thing i can think of is fuel. it is built to run on leaded
> but up til now i have been running it on unleaded without putting any
> additive into it. i know i'm probably gonna cop a bit of flak for this,
> i was under the impression that running it on unleaded would simply
> accelerate valve wear etc. a friend told me that it can infact cause the
> valves to get hotter, thus causing the manifold to get hot.
> so my question is thus, will running a motor designed for leaded on
> cause the exhaust manifold to get extremely hot??
> if so, i will fork out the extra 10 cents per litre for the premo unleaded
> grumble grumble. but i will putting it on gas soon anyway!!
> /thanks in advance.