Do i need the waterpump to intake manifold hose ?

thanks a ton once again

on what?
a honda?

Yes. Manifold out to heater, 5/8 inch ID hose. Return from heater to water pump, 3/4 inch ID hose.

youll have to block or plug the outlet on the water pump
and the intake.
but you wont have heat or defroster.

It amazes me how many people want to ask a question, and don't put specifics about their car they are talking about in the thread. Aonghus, don't take this as pointing the finger at you, just a general statement about everyone, including me.... :D

name of forums: camaros.net
Yes, I would come here to ask questions about a 91 Hatchback Civic.


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Dont have heating, nor a defroster, don't desire to have one as I live in San Diego and would need either for about 6 weeks a year.

Just wasnt sure if I needed that hose, I see quite a few cars that don't have a heater or defroster, but still have that Line (my car being one of them)

anyway, thanks guys.

just happens I do remember seeing a pic of your bypass hose from a previous owner removing the heater...No, you don't need it, you could plug both of those fittings. It wouldn't hurt to drill some small holes in your thermostat to give a lil coolant flow tho.

thanks once again Jim ;p

you always seem to be the one to answer my question straight up

what about running without a thermostat? heard of people doing that before

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well at least include a year of the vehicle?
burns me up as well. after researching a problem then come to find out problem was on a fourth gen not a first gen.
there are major differences ya know!

down, Dawg....Aonghus is a reg here, that pick of an 18" loop of heater hose hangong off the front of his mototr's been on at least 3 times.

I wouldn't run without a thermostat, coolant circulates so fast the rad doesn't have time to cool it. ithout the heater core tho, I would run 3 or 4 3/16" holes through near the edge of the thermostat, this will allow a small amount of coolant to circulate even when it is cold, eleminating the potential for hot spots. With the heater connected, coolant circulates thru it all the time, even when the thermostat is closed.

Some circle track cars that run at hi RPM's can get away without a T-stat, but any street driven car should run one, the t-stat also helps turbulance of the coolant which will provide better cooling. Holes in the t-stat will also help any trapped air in the system to purge. balanced hi flow t-stats (robert shaw etc...)are more desireable then regular style.