GTS Engine Oil Cooler Dimensions

[NZGTRA17]

Post upgrading the hp in my car (600hp at the flywheel) I am looking at durability items. Can one of you with a GTS assist by advising the dimensions of the oil cooler in your car. Likewise what size is the diff cooler?

My GTRA has a cooler that is 330mm tall by 146mm wide and 50mm thick (a standard Setrab size that is rated for 220hp wet sump engines.......!!). The dimension is total length incluiding the brackets off the end of the finned portion. My car appears as though it has had a 400mm x 146mm cooler fitted at some stage and I wondered if this is the standard GTS sizing.

As we will be running in higher ambient temps in an upcoming race I was looking at either 400mm x 193mm or 400mm x 264mm options (rated for wet sump engines from 450 - 550hp).

Thanks, Kel.

[CMPanoz]

Kel,

My GTS has a Setrab 50-948-4062, 948AN10 engine oil cooler installed.

Not sure of the specs off the top of my head, but I did google it some time back with success.

Good Luck,
Chris

[Cobra4B]

Here's what came out of our GTRA. Going with a new custom dual pass radiator with an enclosed cooler in the left end tank. New radiator with enclosed cooler will cool better than the external and simplify line routing.




The horizontal is 11.25" end tank to end tank and the vertical is 5.75".

~Brian

[NZGTRA17]

Originally Posted by CMPanoz

Kel,

My GTS has a Setrab 50-948-4062, 948AN10 engine oil cooler installed.

Not sure of the specs off the top of my head, but I did google it some time back with success.

Good Luck,
Chris

Thanks Chris.

[NZGTRA17]

Originally Posted by Cobra4B

Here's what came out of our GTRA. Going with a new custom dual pass radiator with an enclosed cooler in the left end tank. New radiator with enclosed cooler will cool better than the external and simplify line routing.


The horizontal is 11.25" end tank to end tank and the vertical is 5.75".

~Brian

Thanks Brian, same as what is fitted to my car. Only rated to 220hp unfortunately.

Kel.

[Cobra4B]

Originally Posted by NZGTRA17

Thanks Brian, same as what is fitted to my car. Only rated to 220hp unfortunately.

Kel.

We had no issues cooling the car making 370 rwhp. Oil temps were always in the 250s max other than the time the engine started to let go the first time.

That said, the cooler on my Z06 is a Setrab 625 which is larger than this one.

[PanozDuke]

Brian,
I'm with Kel, you are going to need a bigger cooler for that LS motor. Cooler is better, especially in the south where you run.

Mike

[Cobra4B]

Originally Posted by PanozDuke

Brian,
I'm with Kel, you are going to need a bigger cooler for that LS motor. Cooler is better, especially in the south where you run.

Mike

Had a custom dual pass radiator done with an enclosed cooler in the left side end tank. Not re-using the original cooler that came on the car.

FWIW the SBFs never had cooling issues even in 100+ degree VIR weather. I attribute it to the efficiency of the sealed front-breather setup on the car vs. something like my C5 which is a bottom-breather.

Either way I agree bigger is better. Went with the enclosed cooler for the re-build since we're doing manual steering and have no need for a PS cooler. The enclosed cooler on the driver side means very simple/efficient line layout. Using the dual pass with the radiator inlet/outlet on the passenger side works best with the LS1 water pump and alleviates any dead spots which can be present in a cross-flow radiator. Also, the new radiator has something (new to me) called waffle tubes? The tubes are dimpled to disrupt the barrier layer that forms around the perimeter of the tube and promote even speed flow throughout.

Radiator was done by Tapp Inc. (http://www.tappinc.net/) as referred by CV Products. They build the radiators for various NASCAR teams. One of the benefits of Dad living in NASCAR country.

[PanozDuke]

Cool, Brian

Mike

[Cobra4B]

FWIW here's a picture of the new radiator. My father picked it up this afternoon and sent me a few shots.

[NZGTRA17]

Originally Posted by Cobra4B

FWIW here's a picture of the new radiator. My father picked it up this afternoon and send me a few shots.

Looks like a nice product Brian that will make for a tidy installation. Not sure how they rate the BTU capability of the internal oil cooler though Brian. I guess you will know after you have raced hard in the heat.

I am following the Setrab guide and am planning to use a 320mm x 310mm Setrab cooler (640 model) that a friend has supplied me. Basically twice the area of the current cooler in the car. I have been seeing between 125 - 130 degs C in my car which the Redline oil has coped with but this was in 15 - 20 deg C temps. I expect to race in temps up to 30 degs C in the next couple of months hence the change.

Kel.

[Cobra4B]

The gentleman who built it said it will perform better than the stand-alone cooler given how much more efficient the radiator will be. Mind you this is a 400 horse 6500 rpm setup. RPM and power make huge differences in resultant oil temp. A fellow competitor with a nearly identically setup C5 Z06 Corvette (same engine, oil cooler, nearly everything) was seeing 20-30 degrees more peak temp by simply turning 500 rpm more at a race last June at Road Atlanta. I have my stock 6600 rev limiter in place and he was turning 7100 in places (both stock engines with around 360 rwhp). I was staying 260 max vs. him approaching 290 which is generally the "back-off" point for these cars. We both have the same oil cooler kit with the Setrab 625.

[NZGTRA17]

Originally Posted by Cobra4B

The gentleman who built it said it will perform better than the stand-alone cooler given how much more efficient the radiator will be. Mind you this is a 400 horse 6500 rpm setup. RPM and power make huge differences in resultant oil temp. A fellow competitor with a nearly identically setup C5 Z06 Corvette (same engine, oil cooler, nearly everything) was seeing 20-30 degrees more peak temp by simply turning 500 rpm more at a race last June at Road Atlanta. I have my stock 6600 rev limiter in place and he was turning 7100 in places (both stock engines with around 360 rwhp). I was staying 260 max vs. him approaching 290 which is generally the "back-off" point for these cars. We both have the same oil cooler kit with the Setrab 625.

Just pulled the cooler out of my car Brian. It is actually a Mocal but is the equivalent of a Setrab 619, one size down from your Vette cooler.

As with all things race car, there is a bit of trial and error involved in gettings combo's spot on. I am sure I will now have enough oil cooler area but the unknown will be impact on radiator efficiency. This is a benefit I can see from your new set up as the airflow will be undisturbed over the entire radiator.

Agree on the rpm front Brian, although for me it has been more about cubes increase and more BTU's to dissipate. I am not planning on turning the new combo over 6400 in enduro trim as still 580hp on tap with this limit so pointless running the extra 400rpm.

Kel.

[NewToPanozGTS]

Originally Posted by NZGTRA17

Post upgrading the hp in my car (600hp at the flywheel) I am looking at durability items. Can one of you with a GTS assist by advising the dimensions of the oil cooler in your car. Likewise what size is the diff cooler?

My GTRA has a cooler that is 330mm tall by 146mm wide and 50mm thick (a standard Setrab size that is rated for 220hp wet sump engines.......!!). The dimension is total length incluiding the brackets off the end of the finned portion. My car appears as though it has had a 400mm x 146mm cooler fitted at some stage and I wondered if this is the standard GTS sizing.

As we will be running in higher ambient temps in an upcoming race I was looking at either 400mm x 193mm or 400mm x 264mm options (rated for wet sump engines from 450 - 550hp).

Thanks, Kel.

Hi Kel,

The cooler on my GTS is a Setrab 50-948-4062 which is a different part number from Brian's. Also, based on Brian's picture my cooler appears to be significantly larger. My cooler measures roughly 14 & 1/4 inches by 14 & 3/4 inches w/o the mounting tabs.
I have always marveled at the wimpy -10 oil lines on my GTS. I'm currently upgrading to -12 oil lines which is what Ford Performance and every Ford engine builder I know recommends.

Bill F.
GTS #35
Tallahassee, FL.

[NZGTRA17]

Originally Posted by NewToPanozGTS

Hi Kel,

The cooler on my GTS is a Setrab 50-948-4062 which is a different part number from Brian's. Also, based on Brian's picture my cooler appears to be significantly larger. My cooler measures roughly 14 & 1/4 inches by 14 & 3/4 inches w/o the mounting tabs.
I have always marveled at the wimpy -10 oil lines on my GTS. I'm currently upgrading to -12 oil lines which is what Ford Performance and every Ford engine builder I know recommends.

Bill F.
GTS #35
Tallahassee, FL.

Thanks for the feedback Bill, I settled on a cooler that is approx 13" x 12.75", so similar to yours.

Interesting comment re the -10 oil lines. When I fitted rocker covers with spring cooler spray bars to the 369 we did some track testing to get the oil jet size tailored. We got down to a .015" orifice jet in the end and the oil pressure would still just start to bleed off at 6200rpm in 5th gear (i.e. would start to decay from say 65 back to 50 by the time I needed to get out of the throttle. I put this down to available volume from the pump being insufficient to maintain pressure. Would be interesting to see what would happen if the oil lines were -12. May cure the problem due better supply. Needless to say I have the oilers blocked off at this stage (I did cure the problem I had that lead me to fit the covers with coolers in, but thats another story)!!

Kel.