Does anyone have pressure drop info across the following intercoolers; V1 & PTSLIC ? Also does anyone have temperature deltas across the same intercoolers? I have a Precision SLIC now, but I doubt that 10.99 running pump gas on the PTSLIC is possible for a number of reasons. I'm looking to make a data driven decision.
10.99 on 93 Pump Gas
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I doubt the Precision SLIC in my combo with my stated goal (10.99 on 93 only) because the pressure drop across the intercooler is about 1.5 psi and the temp increase (I'm guessing) is about 50*F above the compressor out temperature. The V1 pressure drop is about .5 psi and 25* F across the core. Also the SLIC scoop does a poor job of using the heat exchange surface ( most of the air wants to go straight thru the lower portion of the core) of the core as compared to the front mount being more in the wind. Then the issue of getting rid of what is heated by the core. I suspect that the V1 has less resistance to flow than the SLIC even with the SLIC impeller on the crank nose. Only a small area of the SLIC is affected by the impeller vs the rushing wind of the V1 in spite of a radiator positioned directly behind it. My work with correcting the SLIC scoop is yielding small benefits. I went to GN1's due to the position of the spark plug in the chamber. It's obvious that less octane would be required than the irons. The thermal conductivity of the GN1's is much greater than the irons however the chamber design provides greater flow, more valve unshrouding and less advance to light the charge by virtue of the plug location as compared to the valves. My turbo (T63e-63/65) has been highly worked for greater efficiency and improved transition from a dead whole shot. This will reduce compressor out temperature. All plumbing alignments are optimized. I use a Champion ported intake along with a cleaned up Hemco. The power plate creates ~ 2 psi drop across the sytem. The Hemco along with the Champ intake shows an even flow distribution. (The flow data from Richard Clarke was necessary for this analysis) Without running the Champ intake (ported stocker) the presence of the EGR chimney restricts flow to the front runners, especially #2. The ported Champ with a Hemco "mathematically" works well. Also using an engine management system with a 20% + correction factor has the potential to save the engine as compared to the "abacus". I'm predicting that the V1 will provide 1 psi less pressure drop than the Precision SLIC and at least a 20*F temp drop as compared to the Precision SLIC. These are my "hopeful" numbers. I have a V1 waiting for me but I think surge may be an issue with the V1 and the T63E. The cam that I'm using has a little more overlap to help the "Helmholtz" affect without being terrible on the street. My goal is to run 21 PSI at 21*/19*. With a 1.6 short I might see 11.2 @ ~ 120 mph???
TurboTnZ06
Go on red!
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You've got ported GN1's and a cam, I think it can do it, maybe not hot lapped, but doable. Although, just get Julio's alkycontrol kit and run way more boost without worry.
If you can trap 120, you have enough power to pull a 1.55 or better 60 foot.
I'm confident my car at race weight 3560# can do it with a old school regular CAS V4 SLIC on 93 only. I just don't want to unhook the alky to try it. I made one shakedown hit on a bone stock 87 complete airbox setup at 15-16 psi boost and went 11.2 on a poor 60 ft (1.635) last week. I don't even know if I even had enough boost to even spray enough alky to make a difference on that run either. I've gone 10's at 119-120 mph, so all I needed was a better 60 and that 11.2 would have been a 10.9x.
If you can trap 120, you have enough power to pull a 1.55 or better 60 foot.
I'm confident my car at race weight 3560# can do it with a old school regular CAS V4 SLIC on 93 only. I just don't want to unhook the alky to try it. I made one shakedown hit on a bone stock 87 complete airbox setup at 15-16 psi boost and went 11.2 on a poor 60 ft (1.635) last week. I don't even know if I even had enough boost to even spray enough alky to make a difference on that run either. I've gone 10's at 119-120 mph, so all I needed was a better 60 and that 11.2 would have been a 10.9x.
the slic is going to control the intake temps a lot better than what your guessing.the compressor is really important piece of the puzzle inmo as a pump gas only tune will have to be approached with caution regardless of the head.i have a lot more data and have seen this kind of pump gas only approach pm me if you want more info.either way put a intake sensor on your setup to see what is really going on and take the guessing out of it
Jerryl
Tall Unvaccinated Chinese Guy
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Trying to understand. Are you saying the pressure drop across the IC increases temp?
The greater the pressure drop (across the intercooler core) the more work the compressor wheel must do to achieve a boost/pressure number. Since more work must be done against a greater resistance or pressure drop, the compressor air temperature out increases.
Mike Licht
I was here first
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Biggest problem with the SLIC is the amount of heat from being in the engine compartment, The amount of cooling air they see is less too. The V1 will outperform it in every way. I will always pick a good front mount when possible. My car does not run hot or have extra lag either.
The laws of physics support the higher thermal conductivity of the aluminum heads, the fact that chamber pressure is greater because the heads flow more, make more power and therefore release more heat. There will be more under hood heat released with aluminum heads as compared to irons excluding things like inverted canutin' valves and exhaust system mummification.
