> So I popped off the rubber elbow hose and sure enough, there is the large
> stainless steel bolt with a small hole drilled though its center,
> threaded into
> the water pump . . . . eh .. um . .. thingie (manifold?)
>
> It did its restricting job very well I suppose. Coolant was just barely
> burbling out of it until I unscrewed it (probably over an inch
> long) and then
> the coolant quickly poured out. (guess I should have drained a
> little coolant
> first)
>
> I thought perhaps that freeing up this bypass circuit would allow
> more flow
> through the heater core, and might make things warmer.
>
> After two days driving back and forth to work (yes, it did snow slightly
> yesterday) it doesnt feel any warmer.
> More than that, the car seems to take forever to warm up now.
Scott, rather than wasting your money on a sleeved thermostat; I'd suggest
getting yourself a new 180F regular thermostat. Sounds like your old one is
stuck open. I use a Robertshaw 330-180, about $5 at AutoZone.
> Anyone want to shed some light on how this bypass circuit
> interacts with the
> heater circuit?
I believe it can rob some flow from the heater, but probably not much as
long as the heater core isn't restricted. And the bypass flow is important,
especially in the wintertime when the thermostat may not open at all.
The heater flow is more or less in parallel with the flow through the head,
so blocking the bypass (which blocks the flow through the head when the
thermostat is closed) may force some additional water through the heater.
Randall
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