Hi Team,

Well, my engine is out and I'm stripping to rebuild. While its out though what could I do to improve the cooling of both coolant and oil?

Can you get a bigger rad, or high flow water pump? Some cheap ideas would be good as I'm not made of money,:wack: but I want to make sure I don't have to take the Bast**d out again!:headvswal

 

look forward to your suggestions

 

Jase

I've seen High water content Radiators on ebay and oil coolers.... don't know what the quality is like though.... perhaps others can advise on that

 

Otherwise try the usual suspects Dan Zaat at DTA, Jeff at Zedworld, Smithy etc for advice...

Yes, there are lots of Uprated Radiators out there. Koyo were always the most popular, but there are plenty others out there.

 

If you are rebuilding the engine then its a good idea to remove the castings on the water channels around the engine, in particular around the back 2 cylinders, as they suffer the most.

Hi Team,

Well, my engine is out and I'm stripping to rebuild. While its out though what could I do to improve the cooling of both coolant and oil?

Can you get a bigger rad, or high flow water pump? Some cheap ideas would be good as I'm not made of money,:wack: but I want to make sure I don't have to take the Bast**d out again!:headvswal

 

look forward to your suggestions

 

Jase

The easiest mod to aid cooling is free.:)

Remove that stupid air con rad from in front of the main water rad.

If your zed is a UK spec fit a jap spec water pump pulley, big difference.

 

Jeff TT

You can bypass the plenum warming system, and plumb the water coolant direct to the turbos.

 

You can fit aluminum replacements for bottom hoses.

 

Uprated radiator, uprated rad cap (not nismo).

 

Redline water wetter

 

Refill coolant at 50/50 af/water ratio, or the anti corrosion element of the af is not effective!

Edited December 10, 200817 yr by TopLess

Uprated radiator, uprated rad cap (not nismo).

 

why not nismo? too high pressure?

nismo opens much later than standard or greddy.

Thanks guys, its a Jap spec but has an uprated (ally) underdrive pulley which is smaller than original so probs need to get the matching water pump pulley.

I've got to say I like my air con so the air con rad will stay.Sorry die hard HP fans!

Legarth, I'm interested in what you said about the water channel castings, What do mean? got any pics or direction on what to do with them?

 

Jase

why not nismo? too high pressure?

 

Pressure not a problem, it leaks from the top of the cap, where the press fitting is underneath the sticker!

nismo opens much later than standard or greddy.

 

aha, well seeing as I have a Nismo radiator cap I can subscribe to that - even on cold mornings like we're having at the moment, it will take ages to warm up, but then even under normal driving it will eventually get up to about 96 degrees, and then start to fall off. might be tempted to swap it back and see what happens...

 

 

Pressure not a problem, it leaks from the top of the cap, where the press fitting is underneath the sticker!

I have to admit Ive not noticed it leaking - it does drop a cup or so after being topped up, but thats probably losing it from the overflow tank.

Edited December 10, 200817 yr by EvoluZion3

Dave I think there is a crossed line :)

 

I am not Legrath, I am much better looking :D

 

Also a rad cap does not influence warming up time, a thermostat does.

Dave I think there is a crossed line :)

 

I am not Legrath, I am much better looking :D

 

Also a rad cap does not influence warming up time, a thermostat does.

 

^ fixed

:rofl: :rofl: sorry dude just got back from the gym and am a bit light-headed :D

 

I dunno ive always been confused about my running temp being a little too high - the motor's being looked at next week so hopefully he can get to the bottom of it

Ive had the plenum water bypass done, i have a jap water pump, a greddy rad cap, ive reomoved the rubber seal at the back of the engine too for extra ventilation and in the summer it didnt go past 80degrees, now it sits between 70-76 Im now doing some research on replacing my rad with an uprated one :D

Edited December 11, 200817 yr by j1mmytt

Thanks guys, its a Jap spec but has an uprated (ally) underdrive pulley which is smaller than original so probs need to get the matching water pump pulley.

I've got to say I like my air con so the air con rad will stay.Sorry die hard HP fans!

Legarth, I'm interested in what you said about the water channel castings, What do mean? got any pics or direction on what to do with them?

 

Jase

 

 

You basically want to clean up any casting flash inside the block's coolant galleries. You'll notice them once engine is stripped. If your getting the block/heads decked and honed/bored then get the engineering shop to do it.