Supercharged 993 - Improving charge air cooling
09-07-2012, 12:01 PM
#16
Rennlist Member
Thread Starter
Thanks guys!! She just eats and sleeps, what a wonderful child!!! (knocks on wood now...)
Some progress with the intercooler(s). I made the end tanks bigger for better flow. Didn't weld them yet so I could test them once more. It's a tight fit but I think it will work. There is a little clearance for the engine to move as well.
On the front of the cooler there is plenty of room for a proper airbox. I will make it out of carbon fibre and dimension it so that I can use OEM paper panel filters.
Some progress with the intercooler(s). I made the end tanks bigger for better flow. Didn't weld them yet so I could test them once more. It's a tight fit but I think it will work. There is a little clearance for the engine to move as well.
On the front of the cooler there is plenty of room for a proper airbox. I will make it out of carbon fibre and dimension it so that I can use OEM paper panel filters.
09-07-2012, 03:08 PM
#19
Rennlist Member
Thread Starter
There really is no point for that. Firstly an IC would seriously influenve the intake air flow (it's one thing to push/pressurise air trough an ic core but completely different to try and suck air trough it). Secondly, the ic uses the ambient air to coold down the extremely hot charge air. There is a big delta between those too, heat gets transferred and the charge air cools down. But try to cool down the fresh intake air with same temperature air flow. No delta T, no cooling effect.
09-08-2012, 04:40 PM
#21
Rennlist Member
Thread Starter
Thanks! If you decide to do something similar to what I've done, let me know if I can help you with anything!
I have been thinking about the best way to route the charge air piping. It would be good to keep the piping as short as possible, so I should run the air from the supercharger directly into the drivers side IC inlet and connect the right side outlet of the IC to the intake manifold. But in order to do that, I need to fabricate a new outlet manifold for the top of the SC, and it would require quite tight radius for the inlet pipe.
Then I came up with an idea to run it the other way around (from SC to the passenger side of IC and out from the drivers side into the intake manifold). This way I could use the original SC outlet manifold (which is actually quite decent from a flow point of view), and I wouldn't need to make the bends so tight.
Surely there would be more charge air piping but I don't think a straight pipe will be such a bad thing!? Or will it?
I have been thinking about the best way to route the charge air piping. It would be good to keep the piping as short as possible, so I should run the air from the supercharger directly into the drivers side IC inlet and connect the right side outlet of the IC to the intake manifold. But in order to do that, I need to fabricate a new outlet manifold for the top of the SC, and it would require quite tight radius for the inlet pipe.
Then I came up with an idea to run it the other way around (from SC to the passenger side of IC and out from the drivers side into the intake manifold). This way I could use the original SC outlet manifold (which is actually quite decent from a flow point of view), and I wouldn't need to make the bends so tight.
Surely there would be more charge air piping but I don't think a straight pipe will be such a bad thing!? Or will it?
09-08-2012, 05:15 PM
#23
Rennlist Member
Thread Starter
09-08-2012, 07:48 PM
#24
Three Wheelin'
Juha,
I like your layout for air flow in and out of the intercooler. I just looked at my SC plumbing and it looks like my piping is different (older?).
Here are pix of my SC. I just pulled the engine/trans out for some major work (clutch, valve guides, piston rings, reinforced rear engine carrier, and a bunch of small stuff).
On my SC plumbing, there is a lot going on just behind the outlet pipe with the inlet pipe. I also wanted to see if I could reinstall the cruse control unit (nice on long trips, but not absolutely necessary). I will give the air-to-air intercooler some serious thought to see if I can make this work for me. With the engine out, it should be easier to work out the details.
I will be following you progress with great interest!!!!
I like your layout for air flow in and out of the intercooler. I just looked at my SC plumbing and it looks like my piping is different (older?).
Here are pix of my SC. I just pulled the engine/trans out for some major work (clutch, valve guides, piston rings, reinforced rear engine carrier, and a bunch of small stuff).
On my SC plumbing, there is a lot going on just behind the outlet pipe with the inlet pipe. I also wanted to see if I could reinstall the cruse control unit (nice on long trips, but not absolutely necessary). I will give the air-to-air intercooler some serious thought to see if I can make this work for me. With the engine out, it should be easier to work out the details.
I will be following you progress with great interest!!!!
09-08-2012, 09:03 PM
#25
Nordschleife Master
Great work so far!
09-13-2012, 05:34 PM
#26
Rennlist Member
Thread Starter
Been busy with work the whole week but some progress still. The wing is painted now and the cooler end tanks welded + pressure tested.
Tonite I was working on the brackets for the cooler and I also designed the new plenum for the SC outlet. (using the TPC provided plenum didn't work after all).
I was hoping to do some testing on Monday evening at a local track but I think the schedule is too tight. Tomorrow night I'm going to the first hockey game of the season (and probably will get drunk too) and then I have the family to take care of too... Not easy, life is...
Some photos:
Tonite I was working on the brackets for the cooler and I also designed the new plenum for the SC outlet. (using the TPC provided plenum didn't work after all).
I was hoping to do some testing on Monday evening at a local track but I think the schedule is too tight. Tomorrow night I'm going to the first hockey game of the season (and probably will get drunk too) and then I have the family to take care of too... Not easy, life is...
Some photos:
09-13-2012, 07:30 PM
#28
Burning Brakes
There really is no point for that. Firstly an IC would seriously influenve the intake air flow (it's one thing to push/pressurise air trough an ic core but completely different to try and suck air trough it). Secondly, the ic uses the ambient air to coold down the extremely hot charge air. There is a big delta between those too, heat gets transferred and the charge air cools down. But try to cool down the fresh intake air with same temperature air flow. No delta T, no cooling effect.
