[KingLT1]

Originally Posted by wnta1ss

Looks like you started your Whipple run at a lower ECT than the Procharger run (by 21º). Would suggest running the Procharger car at lower temps like that too, for a resulting lower MAT. I had a Paxton before, and definitely when the car was running hotter, the MAT was higher.

As far as heat, I have noticed that neither the centri nor the PD/roots blowers really like it. Been at the strip with my Paxton and talked to a guy with a modded Hellcat who told me that his car was 8mph down (it was hot that day). And from what another Hellcat owner has told me, the intercooling on the Hellcat is pretty decent.

I suspect it would make a little difference but nothing huge. And lets say even if it knocked 15-20 degrees off the MAT(which it won't) temps would still be higher at the end of a pull. The Whipple's temp increase was 10 degrees from beginning to end. The P1x was almost 50 degrees.

[laynlo15]

Originally Posted by KingLT1

If the temps on the P1sc were only 110 after a pull then you are looking at the wrong IAT data.

Just looked at the last log on my HP Tuners and started out at 84 degrees and at max rpm when he let off it was 111 Iat. So I'm not sure how thats wrong.

[KingLT1]

Originally Posted by laynlo15

Just looked at the last log on my HP Tuners and started out at 84 degrees and at max rpm when he let off it was 111 Iat. So I'm not sure how thats wrong.

What's the MAT say? Aside from that you said it was 90 something degrees in the dyno. No way your Airtemps are going to be below ambient pre run.

[laynlo15]

I'm not sure where I said it was 90 degrees ambient. That was on my passes at Ls Fest not on the procharger we just tuned. He has an air conditioned shop and only opened the door half way to let the exhaust out.

[KingLT1]

Originally Posted by laynlo15

I'm not sure where I said it was 90 degrees ambient. That was on my passes at Ls Fest not on the procharger we just tuned. He has an air conditioned shop and only opened the door half way to let the exhaust out.

I guess I took that as you were saying both cars were in hot weather since that is what I am referencing in the OP. I am sure if both of these cars were cooled down making a pull in a air conditioned shop the temps would be pretty low as well. So posting that data is pretty irrelevant. That would be like me comparing a WOT pull log on a 50 degree day vs the P1x on a 90 degree day. lol

Also anybody else reading this thread feel free to post some logs in the heat(85-95degree) of some turbo setups or bigger Centri pre and post run.

I would really like to see screen shots of the logs...not he said she said posts. Thx

[Joshinator99]

Originally Posted by KingLT1

I suspect it would make a little difference but nothing huge. And lets say even if it knocked 15-20 degrees off the MAT(which it won't) temps would still be higher at the end of a pull. The Whipple's temp increase was 10 degrees from beginning to end. The P1x was almost 50 degrees.

That's the key part IMO. The PD blower has the air to water heat exchanger that allows it to stabilize the IAT over the course of the run.

[laynlo15]

Originally Posted by KingLT1

I guess I took that as you were saying both cars were in hot weather since that is what I am referencing in the OP. I am sure if both of these cars were cooled down making a pull in a air conditioned shop the temps would be pretty low as well. So posting that data is pretty irrelevant. That would be like me comparing a WOT pull log on a 50 degree day vs the P1x on a 90 degree day. lol

Also anybody else reading this thread feel free to post some logs in the heat(85-95degree) of some turbo setups or bigger Centri pre and post run.

I would really like to see screen shots of the logs...not he said she said posts. Thx

I don't recall what the shop temp was but with us making 6 or 7 pulls I'm sure it was somewhere in the low 80 degree range as many times as we had the door open and the outside temps were in the 85 to 90 range. I only said we did 1 Camaro with P1 sc and I was just referring what my 2650 did when I was running it down the track and the intake temps for it.

[KingLT1]

Originally Posted by laynlo15

I don't recall what the shop temp was but with us making 6 or 7 pulls I'm sure it was somewhere in the low 80 degree range as many times as we had the door open and the outside temps were in the 85 to 90 range. I only said we did 1 Camaro with P1 sc and I was just referring what my 2650 did when I was running it down the track and the intake temps for it.

What was the MAT reading in comparison to IAT?

[KingLT1]

Originally Posted by Joshinator99

Great info as always King. Thanks for sharing.

Originally Posted by Joshinator99

That's the key part IMO. The PD blower has the air to water heat exchanger that allows it to stabilize the IAT over the course of the run.

[wnta1ss]

Originally Posted by KingLT1

I suspect it would make a little difference but nothing huge. And lets say even if it knocked 15-20 degrees off the MAT(which it won't) temps would still be higher at the end of a pull. The Whipple's temp increase was 10 degrees from beginning to end. The P1x was almost 50 degrees.

Seems that you misunderstood my point. I certainly did not say that the final MATs between the 2 setups must be the same. I was simply pointing out the fact that if you had run the Procharger car's ECT cooler like you are doing with your Whipple car, then it's resulting MAT would have been lower, at least by a little. Might have been below the 154 MAT level if you had run it with cool ECT like your Whipple.

[laynlo15]

Originally Posted by KingLT1

What was the MAT reading in comparison to IAT?

It was 107 and it really doesn't matter what it is inside of any building, its what it is down track going thru the traps just like it doesn't really matter how much power it makes on the dyno it will show up in the mph on the big end.

[KingLT1]

Originally Posted by wnta1ss

Seems that you misunderstood my point. I certainly did not say that the final MATs between the 2 setups must be the same. I was simply pointing out the fact that if you had run the Procharger car's ECT cooler like you are doing with your Whipple car, then it's resulting MAT would have been lower, at least by a little. Might have been below the 154 MAT level if you had run it with cool ECT like your Whipple.

I am aware the coolant temp was lower. The ECT doesn't go any lower because it apparently has a stock thermostat. Mine does not....Whipple supplies a lower temp T stat. Both cars were up to temp and had a lot of drive time before making a pull.

Originally Posted by laynlo15

It was 107 and it really doesn't matter what it is inside of any building, its what it is down track going thru the traps just like it doesn't really matter how much power it makes on the dyno it will show up in the mph on the big end.

All I care about is how they perform on the street with real world use since that is how I use my car... Not track time with cool down between runs. Not dyno'd in the A/C. But I agree that you should log data based on how you use the car.

[CamOnlyJabroni]

Originally Posted by laynlo15

My 2650 SS was usually about 110 at the end of the track and my 2300 was over 150 and pulling timing. Those Iat's were on 90 degree days like we see a lot here in the midwest. The numbers you posted are pretty interesting. We were on the dyno a couple days ago with Billy's 16 SS and he just installed a P1-sc with the race intercooler and his Iat's were running about 100 to 110 and making 9.2 psi and over 600 rwhp. Not to bad.

The 2650 on my C7Z gets quite a bit warmer than that. C7’s don’t have the airflow under hood though. Hopefully my auxiliary radiator helps. MATs no less than 130. Heads/cam 11:1 compression, 80mm upper/5% lower on E60. Every cooling mod you can do other than the secondary radiator. My 2300 with a 80mm upper and 12% lower didn’t get any hotter than my 2650 actually. Vette life apparently. If I was cooling my car down before a run it would be lower. I wouldn’t use that data though because that’s not real world conditions IMO. At least for a street car. That’s race prep at a drag strip. I wanna see how the cooling works with the car at full operating temp on the street with pulls. The 2650 cools very well but after you do some pulls, drive around and come to a stop, the shit gets hot. I’m actually not very impressed with the 2650’s cooling capability in the C7. I thought it would be better with how Magnuson hyped up its capability. I haven’t dyno’d my car but it has +30’s tapped on E60 so it’s making power. 20-21 degrees of timing. I’m sure that’s a big reason why it gets hot. The power it’s making.

[laynlo15]

Originally Posted by CamOnlyJabroni

The 2650 on my C7Z gets quite a bit warmer than that. C7’s don’t have the airflow under hood though. Hopefully my auxiliary radiator helps. MATs no less than 130. Heads/cam 11:1 compression, 80mm upper/5% lower on E60. Every cooling mod you can do other than the secondary radiator. My 2300 with a 80mm upper and 12% lower didn’t get any hotter than my 2650 actually. Vette life apparently. If I was cooling my car down before a run it would be lower. I wouldn’t use that data though because that’s not real world conditions IMO. At least for a street car. That’s race prep at a drag strip. I wanna see how the cooling works with the car at full operating temp on the street with pulls. The 2650 cools very well but after you do some pulls, drive around and come to a stop, the shit gets hot. I’m actually not very impressed with the 2650’s cooling capability in the C7. I thought it would be better with how Magnuson hyped up its capability. I haven’t dyno’d my car but it has +30’s tapped on E60 so it’s making power. 20-21 degrees of timing. I’m sure that’s a big reason why it gets hot. The power it’s making.

I see higher engine temps then I ever did on my Camaro SS. My C7 doesn't even have a blower and it is hot at the end of the track, I never saw my temps even making over 850 rwhp on my Camaro ever go over 190 engine temps. I wish GM had of done a better job on the C7 cooling system. If you engine is getting hot its transferring that heat thru the blower also.