Gearbox oil cooler

[steve 944t]

I have a fairly major leak from where the oil cooler loop attaches to the side of the gearbox. [] Unfortunately it is not the o-ring, but the alloy pipe itself has worn and just won't seal anymore. I hadn't come across this issue before, but some googling indicates it is not uncommon.

The coolers are no longer available new and presumably buying used is a bit of a lottery and may not be any better than what I already have. Has anyone else on here had the same problem or know of a clever fix? My Indy does have a spare cooler and car is booked in next week to see if it is an improvement but an alternative backup plan would be nice just in case.

 

[Kongsodoken]

Yes I had the same problem I just fitted a thicker O ring I'm struggling to remember the size I think I used a 3mm thick one quite hard to fit but worked a treat There was a imperial option that's slightly thicker, did not work next size up was bang on Your local hydraulic supply will have one they give it me for free

 

[scam75]

The coolers are hens teeth. I smashed my own in half last year, sourced a replacement which itself began to leak then I could not get another used one for love nor money. Incidentally they were still available from OPC at around £500 last year but I didn't want to pay that much tbh. There are various kits on the internet, 9 products being one I think, that make the fittings to go into the gearbox from which you can then fab your own braided hose and oil cooler set up to suit. I was going to go down this road when eventually a leak free cooler turned up. I still have a leaky one I plan to get refurbished and a 12 row mocal on the shelf for the next time I start loosing gearbox fluid!! I would defo recommend snapping up the used one that's available even as a stop gap. Also speak to JMG, I'm sure they have a fix for the problem also. Cheers Stuart

 

[944Turbo]

JMG did a repair on mine with new machined ends fitted. Tony

 

[steve 944t]

Thank you both, food for thought. Supposed to be at Bedford on 2nd June so hoping for at least a temporary fix. The car is completely unusable in its current state - I filled up the gearbox oil yesterday and there is a steady drip coming out. Not sure how long it's been leaking but it took a lot of oil to fill it up, so lucky not to have destroyed the gearbox! Edit - thanks Tony. I will give JMG a call tomorrow and see what they say.