Interesting cooling idea proposed to me

[Hijacker]

the other day, i was hanging out with the local SR guru in the area and we were discussing cooling issues with S13 SRs. In my neck of the woods, cooling hasn't been a deal yet. our climate never gets too hot, and my cooling setup is running fine (stock save for an electric fan).

One interesting thing he pointed out to me was that the S14 and S15 share the same water pump, but the S13's is different. Apparently, the water pump was redesigned for the S14, and it worked fairly well, that it was kept for the S15. The only thing that keeps an S14 pump from bolting up to the S13 block is the front cover. The cover was redesigned as well, making the pump bolt patterns slightly different at the cover.

The idea is that one could conceivably get the better pump design by swapping the front cover from an S14 onto the S13. It's an expensive idea, and may not work at all if the bolts don't line up. But I thought I would throw this out as food for thought.

[S14Life]

Well it's a nice idea, but untill someone takes the time and money to do it, you will never know.

[Hijacker]

if i had the money, i'd do it to see if it was possible.

[180fan]

the pump doesn't fit in the cover. It fits into the block. The cover goes around the water pump.

[Hijacker]

the cover will still impede the installation of an S14 pump, so you'd have to swap the covers anyways.

[pampadori]

the problem with the s13 pump was that it would cavitate above 7000rpm. if you use an underdriven pump pulley, you fix the problem. most people will never expeirence cooling problems is their cooling system is free of air. i wouldn't worry about unless you stay at 7k for a while (road racing).Shaun

[Hijacker]

Shaun. Jay Almond's the one who proposed the idea to me.

Also, I was under the impression that it cavitated lower than that. Around 6000 RPMs, which one would experience at the track, but not in an everyday situation.

Like I said, I haven't experienced any overheating issues. And the only "mod" done to my cooling system is to have taken an AC condensor fan and move it behind the radiator.

[pampadori]

in the words of my father, don't fix it if it isn't broke. it would be an upgrade, but not one you would notice. if it fit perfectly, and you had a spare one beside you, then i would do it.shaun

[Hijacker]

hence the reason, i'm not rushing out and buying one. it was an idea proposed to me, so I thought i'd share it. if i did every idea someone threw at me to my car, my car would be undriveable

[ca18det_boy]

in the words of my father, don't fix it if it isn't broke. it would be an upgrade, but not one you would notice. if it fit perfectly, and you had a spare one beside you, then i would do it.shaun

so are you trying to tell me that you wouldn't notice a cooling upgade? And hey bart, I and replacing the oil pump on my S14 motor. The pump as you know is integrated with the timing cover. If you want you can have my old one to see if it will bolt up and try to get everything to work.

[912.0turbo]

Ive heard of this as well from some of the drifters at Formula D. I would have to give it a try in this Texas heat sometime but not soon.

[compression]

There is a guy at C&R Racing working on a way to easily modify the S13 water pump to work much better. He is still putting his engine together, so it will be a while before he can test it. Maybe he needs some volunteers to try the new idea out.I know he lurks in this forum sometimes, maybe he will pipe up...

[Hijacker]

so are you trying to tell me that you wouldn't notice a cooling upgade? And hey bart, I and replacing the oil pump on my S14 motor. The pump as you know is integrated with the timing cover. If you want you can have my old one to see if it will bolt up and try to get everything to work.

no money right now, so i'll have to wait until another time (ie- i have income again) to try it

[VitaminT]

Why not just upgrade to an electric water pump?

[Hijacker]

i wasn't aware one was made for the SR

[VitaminT]

I was thinking about it one day and found this. Not like the chevy ones that I have seen, but electric (and expensive) none the less.

http://www.meziere.com/racing/...0.htm

You can go to their home page to view other products, but I couldn't seem to post a link with all the panes.

Here it is at summit, but they don't have pics there.

http://store.summitracing.com/...+pump

[VitaminT]

Now that I posted it, it looks like they list it for the SR20DE so I am unsure if it will fit the DET.

[Nismo_Freak]

Just get a reduction pulley... cheaper and does the same thing.

[llamabeta]

JUN Waterpump



I dont even want to know how much that costs.

Do they have one for the S13?

[pampadori]

Now that I posted it, it looks like they list it for the SR20DE so I am unsure if it will fit the DET.

it doesn't fit. Shaun

[msaskin]

The stock cooling system isn't that bad. I'm running a TOTALLY stock (silvia radiator, clutch fan, shroud) cooling system with 60:40 water:coolant and a bottle of water wetter, and didn't have ONE overheating problem out at streets of willow springs this weekend.

We're talking multiple 30 minute track sessions on a road course that has you spending a LOT of time at redline in 2nd and 3rd gear, in 100+ degree desert heat

~matt