How is your new water pump going ?
09-27-2007, 07:02 PM
#428
Administrator
iTrader: (7)
is anyone replacing the thermostat while they're in there or just reusing the old one?
Paul: any recommendations?
Paul: any recommendations?
09-27-2007, 09:55 PM
#429
unless there is something wrong with the one you have---keep it.
as far as normal operating temps i havent seen a lot of change---that is because the thermostat controls the temps until the system is overwhelmed.
what i have seen so far is that the coolant and oil temps are more in synchrony and the oil temp will actually come down faster when the coolant temps do --during normal type of thermostat variation.
on a cool morning i did actually have to drive my car a little harder to get the oil temp over 160-170(too cool).
i havent had the oppitunity to get on the track yet.
besides water pumps are more than just about temps as you probably already know.
olddragger
as far as normal operating temps i havent seen a lot of change---that is because the thermostat controls the temps until the system is overwhelmed.
what i have seen so far is that the coolant and oil temps are more in synchrony and the oil temp will actually come down faster when the coolant temps do --during normal type of thermostat variation.
on a cool morning i did actually have to drive my car a little harder to get the oil temp over 160-170(too cool).
i havent had the oppitunity to get on the track yet.
besides water pumps are more than just about temps as you probably already know.
olddragger
09-27-2007, 11:32 PM
#430
unless there is something wrong with the one you have---keep it.
as far as normal operating temps i havent seen a lot of change---that is because the thermostat controls the temps until the system is overwhelmed.
what i have seen so far is that the coolant and oil temps are more in synchrony and the oil temp will actually come down faster when the coolant temps do --during normal type of thermostat variation.
on a cool morning i did actually have to drive my car a little harder to get the oil temp over 160-170(too cool).
i havent had the oppitunity to get on the track yet.
besides water pumps are more than just about temps as you probably already know.
olddragger
as far as normal operating temps i havent seen a lot of change---that is because the thermostat controls the temps until the system is overwhelmed.
what i have seen so far is that the coolant and oil temps are more in synchrony and the oil temp will actually come down faster when the coolant temps do --during normal type of thermostat variation.
on a cool morning i did actually have to drive my car a little harder to get the oil temp over 160-170(too cool).
i havent had the oppitunity to get on the track yet.
besides water pumps are more than just about temps as you probably already know.
olddragger
but I just have no idea how to get that son of a bitch Secondary Air Pump off. I spent like probably 1/2 hour looking at the service manual picture and probably an hour on the secondary air pump itself. but I just dont get it. How the hell can I take the screw located at the back of the pump off ?? theres not even room for the smallest screwdriver I can think of.
At the end I just put the screw back on. and just replaced the pump. God damn it now my new Thermostat is sitting in my room collecting dust.
I wonder why no one make aftermarket thermostat for our car ? and hey olddragger can you tell me how to remove that god damn secondary air pump ? (I prefer pictures)
09-28-2007, 08:05 AM
#431
My intention is to work on the thermostat side at some point although our pump design originates from the racing world where it's not used but instead the bypass is blocked and some level of restrictor is utilized.
There's some science involved with thermostat function beyond what some realize, so this is an area for caution as we proceed.
Paul.
There's some science involved with thermostat function beyond what some realize, so this is an area for caution as we proceed.
Paul.
09-28-2007, 08:09 AM
#432
Im not sure how to thermostat logic works, it *seems* to me that it opens really late in order to build some internal Pressure up. I could be wrong tho.
but the open temp is a bit low dont ya think ? 80-84 initial opening ? and 95 Full open ? thats kinda late, just like the stock fan-on Temp (good thing I flash my ECU with RB Flash already
)
but the open temp is a bit low dont ya think ? 80-84 initial opening ? and 95 Full open ? thats kinda late, just like the stock fan-on Temp (good thing I flash my ECU with RB Flash already
)
09-28-2007, 10:12 AM
#433
I'll snap his neck.
09-28-2007, 11:49 AM
#435
10-02-2007, 07:00 PM
#439
road warrior
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The torque spec for the water pump installation is 13.8 to 18.8 ft-lbf right? I tightened mine to 25 ft-lbf, but the factory torque spec seems to be have been much higher as quite a bit of force was needed to break the bolts loose.
10-09-2007, 07:39 AM
#444
well, the new one is in the car now but when I took the original one out (45k miles) I realized that it wasn't the problem... (leak was coming from the wp housing to front cover gasket)
Last edited by neit_jnf; 10-09-2007 at 07:42 AM.
10-09-2007, 08:11 AM
#445
The Chief
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I'm not really impressed with the water pump. The coolant heats up really fast, all the way over 200F along with the oil temp. Then it will go down to around 190 and stay there while driving. In stop-and-go traffic, both temps move between 190 and 205. I'll probably go back to stock.
10-09-2007, 11:44 AM
#446
The purpose of the pump is to prevent cavitation. As a result of the efficiency provided by the design, it moves the water out of the block faster. This happens even at low speeds as it moves it to the thermostat faster. The effect that it has on oil temps, as noted by various people here, shows it's ability to reduce the localized hot spots in the block. This is to the advantage of everyone who drives 'HARD' or does track time. If you're in the throttle heavily from time to time, you shouldn't be without a more efficient pump. One of the most detremental things to rotary engines is high temps, but especially in certain areas of the block. Those who have built these for years and raced them for years know how and where the housings shrink.
Think of the pump as an extra safeguard to your engine's life and don't look at a quicker warm up as a negative thing.
As I mentioned previously, we will provide up-graded thermostats some day, but they too will cause people to be alarmed, as they change the characteristic behavior of the car.
Paul.
Think of the pump as an extra safeguard to your engine's life and don't look at a quicker warm up as a negative thing.
As I mentioned previously, we will provide up-graded thermostats some day, but they too will cause people to be alarmed, as they change the characteristic behavior of the car.
Paul.
