Dreaded Prior Owner
Join Date: Oct 2011
Location: Far from another Esprit.....
EFI Manifold ver 2.0
Well, after datalogging some v. high intake air temps it's time to look at a charge cooler. Looking towards practical packaging over outright performance and minding my fabrication limits, this is what I came up with to test next.
I wanted to avoid the "hot" side of the engine bay, fit under the engine cover, be no wider than my existing manifold, and retain engine service access if I could. To fit an inexpensive 4.5" charge cooler core, I needed to tilt the intake runners down 22 degrees and lay the core on top of them. To smooth the 180 turn from the core to the runners I added a generous radius to the bottom of the plenum joining the two. I don't have a pic of the final runner entrance contours. I did my best to blend the runner and plenum floors and build up the best funnel radii I could between the runners and walls. Not much you can do on the inside turn from the core to the tops of the runners, but the flow is spread over 45 square inches exiting the core so hopefully that helps with lower velocity/losses.
In retrospect, I wish I had spent more time looking for a longer core so I could spread the runner bores more to allow better entry. But with the 10" long plenum box, I can access the timing marks and under the plenum better. Hey, if I still had a distributor, I could reach it now!
1985 BRG Turbo Esprit
Chargecooled w/Megasquirt EFI
Last edited by snowrx; 02-04-2016 at 07:22 AM.