I'm about to take delivery of a newly imported JDM TT and i'm concerned about keeping the auto box from overheating.

 

i've seen the auto gearbox cooler on the Z-Centre web site, http://www.zcentre.co.uk/shop/product_info.php?cPath=21_50_82&products_id=191 .

 

Does anyone here use this kit?

 

Will using the original engine oil cooler as a gearbox oil cooler provide enough cooling to protect the gearbox?

yep lots use it and it saves you having to save up for a new autobox after a few months

at the moment your car is using the pipes through the rad to cool the autobox and the water its sat next to is at 80 plus degrees. Air cooled works well for the box.

thanks for the quick reply.

 

best be ordering it next pay-day then.

Has my 91 import already had a cooler for the autobox fitted? If so, which one is the engine cooler and which one the gearbox?

Thanks

David

Fitted mine from ZCentre this weekend, I posted a thread in the general discussion area giving some detail of what was involved, but you should get instructions anyway.

 

I'll go and look for the 'very oily thread'

 

Gaz

Here it is:

 

http://www.300zx.co.uk/forums/showthread.php?t=71037

 

 

 

Gaz

Has my 91 import already had a cooler for the autobox fitted? If so, which one is the engine cooler and which one the gearbox?

Thanks

David

 

engine cooler at front and oil cooler at rear usually.

Does my auto cooler need upgrading, I'm a bit confused by them comments about the jap auto cooler being in the water rad??

Does my auto cooler need upgrading, I'm a bit confused by them comments about the jap auto cooler being in the water rad??

 

Basically, there is a separate channel inside the big radiator which is hooked up to the autobox. As was stated earlier, this is not an optimum solution due to the fact that there is a lot of heat transfer inside the main radiator from the engine coolant. Jap-spec cars benefit from having a separate cooler installed because it makes cooling more efficient.

 

In UK-spec (or Euro-spec for that matter) cars, the autobox is cooled via a larger, separate cooler. This cooler was added because of the more "strenuous" driving conditions on the continent when compared to the driving conditions in Japan.

 

In an ideal situation you'd have the autobox cooling circuit run through the main radiator first and then through a secondary cooler. Why? You want the autobox oil to warm up as quickly as possible to minimise internal damage. Running it through the main radiator will warm it up quickly. A thermostat will then block that circuit once operating temperature has been achieved and activate the secondary circuit through the separate cooler. This complicates matters more than is required under normal driving conditions but it's worth a thought or two.

 

I hope this has cleared a few things up rather than make things more confusing ;)

 

ATB,

 

Dan