7747 spark control questions.

[Bruce Plecan]

It's kinda a slippery slope, but to maintain as high as possible in block
coolant pressures I've plugged the bypass line on the GN.  The temps seem to
flucuate some since the themostat is a bag bag affair, but I'd rather have
it dance 10-20dF, and have the protection of a little higher coolant
pressure to prevent locatized overheating in the heads
Bruce




> I run a 180 Robert Shaw in my BBC stuff, with a 1/8" hole drilled thru.
The
> hole was mainly to help me burp "baby" when refilling the coolant system.
> I compromised on this slight drop because I've got a lot of thermal mass
and
> cast heads to deal with.
>
> Walt.
>
>
> > Just to expand on a theme here,
> > Are you running slightly lower operating temps.?.
> > I've been playing with some aftermarket GN stuff and they are generally
> > tuned for a 160 operating temp, and I'm using a 190, and just moving the
> AFR
> > a tad makes for a realllyyyyyy nice set up.
> > I'm getting more convinced then ever that 190s are the only way to go.
> > I know that flies in the face of what's commonly repeated as way to go
> > faster, but it's just what works for me.
> > Bruce
>
>
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