xsboost90

since my last thread was driven OT, i wanted to start a new one to document my RX7 oil cooler install. Just finished it up tonite and started the car- didnt leak, still had oil pressure so im guessing i did everything correctly.

First i bought the cooler- which appears as if it is the larger of the two or so versions available. Ive seen many have the tank modified to move the oil lines to the side of the tank so the cooler can be mounted centered on the radiator, but my hope was to mount is just off center and have them directed right at the motor on the ps. After removing the old cooler and lines- i actually have an S2 oil filter plate and lines/cooler- i had to mount the new cooler. After trying to find a simple way to mount it i decided to make up some brakets using some 1/2" square tube i had laying around.

First i made some plates that bolted onto exhisting holes near the cooler, and bent the braket on the line side of the cooler 180 degrees so it kinda matched the other side. Then i made some plates that matched up with the brakets on the cooler, drilled the corresponding holes and welded on capture nuts. Then basically i used a jack to hold the cooler up level w/ the bottom of the radiator support and made the brakets up.

I found out through searching here locally that finding something to thread into the cooler and onto an AN10 line was about impossible. I ordered some AN10 weld on ends- two steel, two aluminum, and took them to a local shop and had them tig welded on to the cooler, and to the S2 factory line ends after removing the factory hose and cutting the barbed end off. Then all that was left was to cut the braided hose to length and put on the EARL's thread on end fittings. I sprayed the cooler black to hide it behind the bumper as i like my car to be modest. Hope this is helpful.

J Berk

Nice work Dan !

Rock

Rah Rah. Ah ah ah. Roma Roma-ma. Gaga ooo la la.

OR

(RAH)² (AH)³ + [ROMA (1+MA)] + (GA)² + (OOH)(LA)²

Josh B

Good work Dan! Are you monitoring oil temps anywhere?

Van

Nice job!

MAGK944

Nice install.

I have a question. Should the oil run to the cooler all the time or do you have some sort of thermostat in there? I seem to remember reading that oil needs to "quickly get up to temperature" to lubricate correctly and I seem to recall that some installations have a thermostat that stops the oil to the cooler until its above a certain temperature.

Oddjob

Yes, there should be a thermostat. Unless removed, the factory oil thermostat is internal to the oil filter housing.

Josh B

The original thermostat opens up at 105 celsius(221 F). Porsche released an updated one that opens at 95 celcius(203 F). It is under that big round plug by the oil filter.

I put a temp sender in the top plug (return side) of my rx7 oil cooler and another one in the banjo bolt of the turbo oil return line. I've seen the oil temps at the turbo return line get to 260F pretty easily. The cooler doesn't hardly ever show me a temp - I am wondering if my sender isn't long enough or something? I should check and see what the temps are at the oil drain plug.

Darth Coupe

Way to go man!

V2Rocket

what will u do with that s2 cooler

SamGrant951

You may already have done this (can't tell) but you might want to install a rubber washer or something in between the bracket/cooler to provide some dampening for it. I used rubber stoppers cut with a hole drilled though them. Just a thought, looks great!

RockStar951

Nicely done. Looks better than the stock set-up. Kudos!

Rock

So realistically how much cooler do you expect oil temperatures to be? I thought that S2 cooler was pretty big.

xsboost90

S2 oil cooler is sold and gone.

Really i wasnt aiming for a specific temp for my oil, and im not even sure it was running that hot. The main idea was to get rid of my old cooler lines that i messed up going off the track, and picking up alittle bigger cooler to keep the temps down with the big turbo and all. Rubber bushings arent a bad idea. I did block the thermostat closed since the stock one is still in the oil plate.

Rock

Yeah yeah. I think it would make a huge difference on the track. Anyone on the street probably wont see any difference, but you run that thing hard on the track where oil temps soar. That big cooler and some nice fresh air running around it should stop the oil from breaking down as quickly.