Ok guys I did a search but could not find the answer I was looking for.

My FD has 38K on it and well now that I have a new radiator for it I figured I would change the water pump, thermostat and the hoses while I am in there.
So my question is:

What is the best water pump, thermostat and hoses?

I figured Beck Arnley NEW water pump not rebuilt, a 180 thermostat and stock hoses.
Does that sound right? Stock hoses will not be affected buy oil so figured that is the best bet.

 

I would suggest an OEM style water pump:

http://www.rx7.com/store/rx7/fdengine_cooling.html

I don't think you are going to gain anything by going elsewhere. As far as the thermostat, for normal street driving just use an OEM thermostat. As for the hoses, I recommend Samco hoses, but they are fairly expensive as far as hoses are concerned. Stock hoses would be fine as well.

 

Ok, I can get a brand new Beck Arnley / Mazda OEM water pump for $30 (good friend)
The hoses.... I have not got a reply back on.
As for silicone hoses, Im not too sure on this as oil and silicone don't mix to well
in my mind.
As for the thermostat I am wanting the car to say under 190 so not sure if I want to run the stock OEM although the new alum rad will help the thermostat would be another safe guard.

 

I'm not sure why you want the car to stay under 190, it can be a bad thing for the car to run too cool all the time.

As far as the hoses, Samco makes specific hoses for cooling lines:



They are reinforced so they are better than just standard rubber hoses.

 

Yes I understand the whole hose thing but my concern is that FD's leak oil and if oil gets on the silicone hose would that not start to break it down? Or is that the old silicone ways? Are you running these on your FD?

As for the thermostat, staying under 190 is not bad imo. I am running a 160 in one of my other rotaries and the needle stays at the 1/4 mark even under hard driving. My Fd sees 210 tooooooo often and well I don't like to see that or anything over 200. So do you know anyone that used a lower therm and had issues?




Ok, so anyone that has a lower thermostat or if your running those fancy hoses can you please speak up and let me know pros / cons please.

 

160 isn't even warmed up, heck 170 isn't even warmed up.

 

Old wise tale. If you keep the hoses submerged in oil for a few months, that might be a problem.

Yes. I purchased them from AutoRND.

If you are on the stock ECU (or stock based), it does some retarding until certain temperatures are obtained. Now if you have a standalone ECU, then it doesn't matter as much. However, 210F is no where near being bad.

I am running a lower temp t-stat, however my car is primarily track only.

 

That is what I was thinking as these are sold everyday but still have the old way of thinking. I might pick some up and give them a try.


Ok, well let me first say I will be installing my Power FC soon so I will have a little help. As for the stock thermostat I guess I will stick with it after talking to you and two others (one a good friend).
I was just trying to get the car to stay a bit cooler other than changing the rad and using the power fc.
I think my problems were the old fluid in the stock rad. I drained that and then added distilled water and some rad flush. I drove the car today and it is staying around the 185 temp and under hard accel it hits 200 but then drops down quickly. So I guess the biggest problem was the old fluid, listing to all the overheating issues and then allowing that to make me nervous.

With this car being old and only having 37K I am wanting to catch up on the up keep.

 

thats on a carbed 12a. Runs great, stays cool and get good gas mileage.

 

I thought KUBOTA made the stock water pumps. ?
And why change the WP if it's not bad? They generally don't fail catastrophically and it's not a bad job.

 

Jim, I bought one to have on hand if needed. My WP was a little wet on the bottom but I think that was from the PO adding coolant before I bought it.

As for the parts, B/A parts go into a lot of dealerships and then get the dealers name put on the box. A good friend is a B/A rep.