Hi guys can anyone tell me if all uk cars had a power steering cooler also is it part of the oil cooler or is it separate thanks Taff

Hi guys can anyone tell me if all uk cars had a power steering cooler also is it part of the oil cooler or is it separate thanks Taff

 

Yes they did and it is a separate system to the oil cooler. I've deleted mine as the fins were rotten.

same as I deleted mine just 2 days ago fins all rotten

UK power steering cooler in front of oil cooler:

 

Ok thanks guys that solves that problem .

When on earth is a power steering fluid cooler ever going to be needed?? Especially considering the jdm spec didn't have them. Does anyone know Nissan's logic behind this?

Nissan added additional coolers for Euro spec cars after high speed testing on German autobahns. In the case of the PS system

the mechanical pump is designed to provide full flow at, or very close to, engine idle speed (needed for example with low engine

revs and parking). As engine revs increase and are maintained (high speed driving) more and more fluid is being pumped around

the (open spool) system. As such, the oil heats rapidly, and can without additional cooling overheat and cavitate resulting in PS

performance degredation and/or failure.

 

Granted that for most everyday driving the cooler is probably unnecessary, but Nissan would have been conservative for their

specifications for the European market. If you track/race your car adequate PS cooling is something to bare in mind.

Edited May 27, 201411 yr by AndrewG

Yes they did and it is a separate system to the oil cooler. I've deleted mine as the fins were rotten.

 

same as I deleted mine just 2 days ago fins all rotten

 

Common problem I reckon - due to the positioning it is subject to a lot of water getting splashed over it after years of driving in the rain. I have never heard of any car suffering from PAS oil overheating (least of all a 300zx), so if yours in knackered, just disconnect the hoses and join them together; then remove the old 'cooler!! Typical Nissan over-engineering......

 

That's what I did to mine a few weeks ago....:wink:

Maybe Jaffa or Bob could shed some light in this on their race cars?..

Not sure if this is correct but a came across a post on sxoc stating the uk oil cooler is a nismo 19 row item.im awaiting delivery of one at the moment I'll check for any nismo branding I'm sure the small jdm cooler is calsonic brand.

UK oil cooler is (21305-37P00) 11 row and is also made by Calsonic. Nismo is the same unit:

 

http://www.conceptzperformance.com/Cart/description.php?II=4506&Car_Type=300&UID=2014042802311386.149.173.166

This thread contained the subject of PS coolers. Here is a post on TT.net with folks experiencing PS

failures through overheating when using their cars on the track:

 

http://www.twinturbo.net/nissan/300zx/forums/general/view/2576746/Power-steering-pump-issue-after-track-session.html

Edited June 25, 201411 yr by AndrewG