Jim,
A thermal barrier coating on the exhaust manifold or inlet manifold or both
will achieve a lot more than any carb heat shield will and while not that cheap
will be money you won't regret spending for many years if not decades.
Overheating in traffic but Not overheating on highway running suggests the
engine driven fan isn't delivering enough cold air to cool the radiator. There
is a ton of stuff you can do to drop coolant temperatures but for you problem
I'd be inclined to consider an electric fan first.
I haven't used rim straps but a quality tape instead and I've never had
problems though the latest 5.5" wires I have are now tubeless.
Daniel1312
In a message dated 29/05/06 01:41:20 GMT Daylight Time, bmwwxman@gmail.com
writes:
> Howdy all...
>
> Since I have been driving the Midget daily now for nearly 2 months I'm
> beginning to pick up on a few things that have me curious. I'm hoping
> some of you will excuse my lack of knowledge and fill me in on these
> items:
>
> 1) What is normal oil pressure on a 1275? Mine reads about 70lbs at
> 2,000 rpm and above but drops back to around 40 at idle.
>
> 2) How reliable are the actual values on the oil temperature gauge?
>
> 3) What is normal water temperature on a 1275? Mine reads about 170
> degrees once the thermostat has opened and I am cruising along at
> speed. Once I stop and let idle in 90 degree or warmer air temperature
> (or in slow moving traffic), it begins to heat up, eventually making
> it up over 190 degrees at which point the engine starts to get baulky.
> I have a new radiator and thermostat and am running just water with
> some water wetter in it.
>
> 4) What causes the baulkiness and eventual stalling above? I have an
> HIF44 on the 1275 which runs beautifully except when the engine heats
> up. Could this be the lack of a heat sheild between the carb bottom
> and the exhaust manifold??
>
> 5) If the heat problem above IS due to the lack of a heat sheild,
> where can I find one for my HIF44 carb?
>
> 6) I got new tires for my wires and am just about ready to media blast
> the wheels, repaint and install the new tires. Therefore - a couple
> of questions on that process...
> a) Where can I find rim straps and good quality tubes for my wires
> other than Mo$$? Mo$$ wants more for a rim strap and tube than I paid
> for the tires through TireRack.com!!
>
> b) Can anyone recommend a good rattle can paint treatment for the
> wire wheels? After they are clean from media blasting, I'm thinking of
> doing a base coat, color coat, and clear coat from rattle cans. Any
> recommendations on colors or brands that look good and hold up well on
> wires?
>
> Many thanks in advance for the help!!
>
> Cheers!!
> Jim - 68 Midget in Dodge City
> --
> 1964 R60/2 BMW
> 1968 MG Midget
> 1976 R90/6 BMW
> 1990 K100LT BMW
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