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Help! Aftermarket Chargecooler

263 views 8 replies 6 participants last post by  mike.griese  
#1 ·
I am (still) working on a 1985 Turbo Esprit. It has an aftermarket chargecooler system installed that has now started to leak coolant into the intake airflow. Not Good. There are no identifying marks on the chargecooler itself save for the numbers 11684 889. Google searches have come up empty and I can't find anything online that looks like this unit. I've sent a note off to JAE and Lotus Parts By Claudius to see if they know anything about this, but have yet to receive responses. Here is the unit:

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The offset nature of the charge openings is important for the rest of the plumbing. The dimensions are 12.5" wide, 11.5" deep and 5.5" tall. Has anyone seen anything like this or have recommendations on where I can look?
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#3 ·
Aside from no way to properly bleed the system, it's not a bad installation. They used two Lotus oil coolers mounted on either side of the actual oil cooler and mounted the pump by the horns above the front undertray. Hoses run along the frame along with a wire that is activated by a pressure transducer on the turbo. The idea is that the pump only runs when the car is on boost. There isn't a lot of coolant flow and the intake runner is about 3x longer than normal, so I'm not sure how much of a benefit there is. I would think a Lotus chargecooler mounted in the normal place above the exhaust cam carrier would be a better option, but I have no idea if those were even available when this kit was put together.
 
#9 ·
I am beginning to think that is what will have to be done. I really hope the matrix is a standard size.