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11-23-2014, 01:54 AM
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#1 |
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Go fast, please.
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Lower pulley size/percentage?
I have seen a few charts showing it but for some reason I don't see a lot of the options on there. Right now I have an ATI superdamper on my car with a 5% overdrive ring...
I know for the ATI there is 5%, 10%, 18%, 22.5% or 28%. So what is the size in inches for all of those respectively? |
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11-23-2014, 08:20 AM
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#2 | |
        
Drives: A Static line to a pack tray & ZL1 Join Date: Feb 2011
Location: Centeral NY
Posts: 2,277
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Quote:
You mean this? Under all the pulley sizes on the left below them are the percentage.
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2017 ZL1 A10: 8.84 @ 156 PB
2017 ZL1 A10: Previously FBO 756/761 (9.6 @ 143 1/4) SOLD-2013 ZL1 M6:BTR,LTs,IDs,ATI,RotoFab10.84@129 SOLD-2011 SS M6: Blower, Cam, Alky, LTs. |
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11-24-2014, 12:19 AM
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#3 | |
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Go fast, please.
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11-25-2014, 10:40 AM
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#4 |
 Drives: 328xi, ML400, ZL1 man. 2013 Join Date: Aug 2012
Location: Quebec
Posts: 153
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how hard is it to swap pulleys on zl1. Is there any major disassembly to get access to the pulleys eg harmonic balancer and overdrive pulley.
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11-25-2014, 11:31 AM
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#5 |
  
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,824
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not major but removing the radiator will gain access although not completely necessary. Having the correct puller and install tool will make life much easier during the process. Upper pulley swap requires removal of the supercharger and a press.
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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11-28-2014, 05:18 PM
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#6 |
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Drives: 328xi, ML400, ZL1 man. 2013 Join Date: Aug 2012
Location: Quebec
Posts: 153
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1- how is driveability affected with ati and 5 percent pulley. stalling, flutters and rattles and smoothness of idle and drive.$
2- do parts wear down faster, eg spark plugs, injectors. etc.? 3- does exhaust note change? 4- what will a tune improve with an ati + 5 percent set up? any harm not tuning ? 5- can a tune be avoided if a roto fab is added? |
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11-28-2014, 10:24 PM
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#7 |
 
Drives: 2013 ZL1 A6 Camaro, 2015 C7 A6 Z51 Join Date: Apr 2014
Location: Oklahoma
Posts: 396
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1) drive-ability is not affected with a pulley at all. I added the 9.55 to the lower, so the 5% won't affect it if mine didn't
2) I don't know the answer to this, I have not heard this question asked before. 3) No, it don't to change the exhaust note 4) no harm in not tuning with the 5% and roto-fab installed...Just an FYI though. I have to run 91 here because 93 is hard to find. I put mine on a Dyno and did a tune with just the roto-fab on it and nothing else. My 1st run (no tune) was 475 HP at the wheels. After the tune it was 496. So I got a 21HP gain by getting a tune. It was not needed though.
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Roto-Fab CAI, Texas Speed Headers, Texas Speed X-Pipe, Texas Speed LS3-B Blower Cam, Metco 9.10" Crank Pulley, Metco 2.5 Upper Pulley, ID 850 Injectors, LPE Ported Throttle Body, Alky Control Methanol kit, E2 Catch Can, 610HP / 608 Torque.
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11-28-2014, 10:26 PM
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#8 | |
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Drives: 2013 ZL1 A6 #7860 Join Date: Apr 2014
Location: CO, USA
Posts: 1,279
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