What intercooler for a race car?
06-29-2016, 08:28 PM
#31
Rennlist Member
Possibly a packaging constraint for a road going car? For a track car you want to maximise efficiency for all cooling.
06-29-2016, 08:38 PM
#32
Pro
The rx7 cooler did work very well as it was though (I only do short sprints anyway) but I will definitely be swapping the lines around just to get every last bit of cooling out of it. Luckily I've taken out the A/C so I can mount the cooler further back and the lines will still reach.
06-29-2016, 10:17 PM
#33
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I'll be going with a PWR intercooler. I was planning on doing it last month, but never got around to proper measurements. - Not a huge priority at the moment as it's winter and doesn't get driven in the winter.
A lot of our big performance cars down here use PWR. like Patrick said, the V8 supercars use PWR cores. And if they use it, I don't see it being a terrible product. I think you're getting a lot of quality for the price.
Plazmaman are great also, but IMO they're not cheap.
A lot of our big performance cars down here use PWR. like Patrick said, the V8 supercars use PWR cores. And if they use it, I don't see it being a terrible product. I think you're getting a lot of quality for the price.
Plazmaman are great also, but IMO they're not cheap.
06-30-2016, 01:08 PM
#34
Burning Brakes
That makes sense...
However, looking at the factory cooler, the outlet appears to be on the bottom of the cooler?
Maybe it doesn't matter much on the stock cooler.
Since I copied the stock layout with my rx7 cooler it looks like I should swap the lines around when I put my engine back in. It still worked pretty good though as it never went much over 100C at the track even in summer.
However, looking at the factory cooler, the outlet appears to be on the bottom of the cooler?
Maybe it doesn't matter much on the stock cooler.
Since I copied the stock layout with my rx7 cooler it looks like I should swap the lines around when I put my engine back in. It still worked pretty good though as it never went much over 100C at the track even in summer.
The rx7 cooler may have the same benefit of restriction, but either way it gains from the fact that even fed from the top the oil still has to go across and back providing a fair amount of coiling even if not optimal.
06-30-2016, 10:45 PM
#35
Rennlist Member
Thread Starter
Sorry Cj, I missed this one.
The full body kit is from IFC Racing. I made the one piece front myself from the kit. You can find details about my wide body here...
https://rennlist.com/forums/944-turb...fc-racing.html
The full body kit is from IFC Racing. I made the one piece front myself from the kit. You can find details about my wide body here...
https://rennlist.com/forums/944-turb...fc-racing.html
06-30-2016, 11:05 PM
#36
Rennlist Member
Thread Starter
BTW, the fenders are now different.
This is a picture during the work. Rear fenders are now closed and I need to finish the front.
And build a diffuser. For that I am working on a side exhaust with the muffler in the tunnel as I need to pass the 92db sound level. Not easy...
Then the flat blottom...
With more aero, heat management will be more and more tricky.
This is a picture during the work. Rear fenders are now closed and I need to finish the front.
And build a diffuser. For that I am working on a side exhaust with the muffler in the tunnel as I need to pass the 92db sound level. Not easy...
Then the flat blottom...
With more aero, heat management will be more and more tricky.
06-30-2016, 11:20 PM
#37
Rennlist Member
Thread Starter
Perhaps your photo just doesn't show, but you need an air EXIT as well as an air ENTRANCE. Otherwise you'll not have enough airflow to cool the oil. I ran a similar arrangement to yours but there was also a duct running to the inner fender where holes were cut for the air to exit.
Sorry I had to take those pics at the last minute in my trailer as I am travelling right now.
I am now using those openings on the bumper (Turn sign, Fog light and lower vents). Last picture is the exit in the front wheel fender.
06-30-2016, 11:28 PM
#38
Rennlist Member
Thread Starter
07-01-2016, 12:14 AM
#39
Rennlist Member
Thread Starter
Here's another mistake often made with cooler plumbing that is critical: You have to make sure the cooler is filling with oil for it to be cooled. To ensure this, with side inlet/outlets, the inlet must be on the bottom and the outlet on the top so oil fills the cooler before it exits. If the cooler has topside in/outlets, either position will work. If you have bottom in/out, the cooler will never fill with oil and it cannot provide any cooling. If you've got this plumbing wrong, any increase in cooler size won't help your temperature problems.
I pretty sure I did what Porsche did.
Before and after pics.
Should I do it differently?
07-01-2016, 10:28 PM
#40
Rennlist Member
Cyril is that how your car is now with the modified open fenders? Looks way more Time Attack setup like that. I like it. Not as pretty and old school as before but a lot more aero efficient. Has this design been developed through working with Ernie? Have you been able to measure the difference?
07-02-2016, 02:54 AM
#41
Rennlist Member
Thread Starter
Cyril is that how your car is now with the modified open fenders? Looks way more Time Attack setup like that. I like it. Not as pretty and old school as before but a lot more aero efficient. Has this design been developed through working with Ernie? Have you been able to measure the difference?
For now I am trying different things, understand how it works and improve what I have. Next challenge is the thermal management that comes with aerodynamic.
04-19-2017, 08:51 AM
#42
Race Car
BTW, the fenders are now different.
This is a picture during the work. Rear fenders are now closed and I need to finish the front.
And build a diffuser. For that I am working on a side exhaust with the muffler in the tunnel as I need to pass the 92db sound level. Not easy...
Then the flat blottom...
With more aero, heat management will be more and more tricky.
This is a picture during the work. Rear fenders are now closed and I need to finish the front.
And build a diffuser. For that I am working on a side exhaust with the muffler in the tunnel as I need to pass the 92db sound level. Not easy...
Then the flat blottom...
With more aero, heat management will be more and more tricky.
If so, what was the result?
04-20-2017, 05:36 AM
#43
Rennlist Member
Thread Starter
My 944 Turbo is definitely fast and fun but right now I am focusing on my racing season with the Cup.
I will work on the Turbo next winter as I have nothing to cut or modify on my Cup... ;-)
04-20-2017, 08:46 AM
#44
Rennlist Member
What does faster laptimes Cyril?
04-22-2017, 08:11 AM
#45
Rennlist Member
Thread Starter