Vortech YSi versus Paxton Novi versus ATI D1SC or F1R
12-11-2006, 07:21 PM
#22
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Originally Posted by 9secVette
I cant speak in regards to the Vortech or Procharger, but ECS built my 98 coupe with just forged rods and pistons in a 346, stock heads, headers, and their Paxton kit. I run 9.70's @ 141 with a 1.55 60' over and over again with a full tank of gas and nothing removed from my car. I'm sure there are other cars out there running times like this with my limited mods using the other head units, but I have yet to see it.
Then there is that little fact that the fastest supercharged C5 has an ECS Paxton kit on it, 9.33 @ 147 is hard to argue with. Once again, I am not putting down any head unit, just posting my results, I think any of the above mentioned head units will work great for 99.9% of the people out there.
Then there is that little fact that the fastest supercharged C5 has an ECS Paxton kit on it, 9.33 @ 147 is hard to argue with. Once again, I am not putting down any head unit, just posting my results, I think any of the above mentioned head units will work great for 99.9% of the people out there.
12-11-2006, 08:48 PM
#23
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Originally Posted by Got Me SOM
dude a strainer aint a filter! you do realize you get pretty big particles thru that right? lmao
12-11-2006, 11:40 PM
#24
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Originally Posted by Vortech
Right now-you have 3" blower pulley-not sure if you have a 8" crank or a 7.5 crank-but FWIW-you've pretty much maxed out the setup. If your running the 7.5 crank your spinning the blower to 60,000 rpm, 8" 64,000-so in reality your overspinning the blower at least 10,000. Doug has told me himself-if he wants more he needs to go to a 2.75 blower pulley but then he only get's 3 passes and the belt is done. The Novi-flows 1400 cfm-race version supposedly 1700 and all it has a extrude honed scroll. I think the main thing for me is what blower can 1 spin with 1 belt that runs all the accessories and still lives. From what I'm hearing from the Renegade guys the 5.4 step up in the Prochargers gets harder to spin and Rob's more power than a 4.10 or a 3.45 from a Vortech. Are there any C5's out there running a F1C or any F series blowers and successfully compaining them at the track?
1.12 SUPERCHARGER
Permitted superchargers are restricted to NMRA specified supercharger size requirements, utilizing an 8-rib belt drive system.
SPECIFIED REQUIREMENTS FOR CENTRIFUGAL SUPERCHARGER: Inlet diameter – external OD 4” maximum, discharge diameter – external diameter 3” maximum, housing diameter (greatest external diameter of housing not to include discharge) – 10” maximum, impeller exducer diameter (tip-to-tip) – 6.6” inches, impeller inducer diameter – 4.0” inches. Injection of any liquid, gas, or any other substance into the supercharger housing prohibited. Supercharger compressor wheel must be constructed of cast or billet aluminum and must be NMRA accepted for the specified supercharger unit. Exotic material wheels prohibited. Pushrod-based engines must use standard rotation (non-reverse) supercharger, with supercharger inlet mounted rearward facing. Modular-based engine may use reverse rotation supercharger.
1.12a) PULLEYS/BELTS: Blower crankshaft pulley 8” maximum diameter (measured at the outside diameter of the ribs) standard width, belt system required.
PERMITTED SUPERCHARGERS: units listed are approved by NMRA for competition in the Renegade category and these superchargers are certified to be within the specified size requirements listed above.
VORTECH A, B, S, YS, ,YSi, JT, & T TRIM, V24-YSi
ati procharger p600, D-1, d-1sc, d-1r
ati procharger p1sc, P1SC-2, p1sc-h
ati procharger f1, F1R, F1C-5.0
paxton sn, vr4, NOVI 1000, 2000
POWERDYNE BD-9, BD-10, BD-11, XB-1A
Kenne Bell SCREW TYPE BLOWER, 2.2L & 2.4L
Eaton m112 supercharger
1.12b) GEAR RATIOS: Internal gear ratios may not be altered from stock.
PERMITTED GEAR RATIOS:
Vortech V-1 A, B, S, T, JT, YS, YSi Trim 3.45:1
Vortech V-2 S Trim 3.60:1
Vortech V24-YSi trim 4.25:1
ATI Procharger P1SC, P1SC-2, P1SC-H, D1SC 4.10:1
ATI Procharger D1, D1R 4.44:1
ATI Procharger F1, F1R, F1C-5.0 5.00:1
Paxton Novi 1000, 2000 3.54:1 or 3.50:1
F-series ProChargers were forced as of this last season to run a maximum of a 5.00 ratio in their blowers. This required NMRA specific gearsets to be made. Hopefully this year the NMRA will approve the standard production F1R for competition.
The larger stepup ratio is a benifit, not a hinderance. Like any overdrive the higher ratio requires more torque to be transfered through the belt contact patch. The increased belt wrap of a larger diameter pulley more than offsets this.
You'll see the fast guys running the F1R's.
BTW, extrude honing a volute isn't going to pick up 300 cfm if the casting was in good shape to begin with. Its just a very slight advantage.
On with the show....
12-11-2006, 11:43 PM
#25
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Originally Posted by SSilverSSurfer
i hope i wasnt a strainer for that reason, maybe he'll chime in, thats why i said it looked like a strainer
12-12-2006, 06:40 AM
#29
Originally Posted by andereck
Looked just like a strainer to me too. I think any filter would have more area and flow than a kitchen strainer. But you gotta do what you can. At least the blower will remain pulp free.
And mine was a kitchen strainer lol, wal mart racing
12-12-2006, 12:56 PM
#30
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Given the makeup of these blowers is similar to turbos.....
Does anyone offer compressor upgrades within the same housing ??
ie...is it possible to fit a bigger/better wheel into my YSi ??
Does anyone offer compressor upgrades within the same housing ??
ie...is it possible to fit a bigger/better wheel into my YSi ??
