12-27-2020, 12:47 PM | #1 |
Drives: 2017 Chevrolet Camaro ZL1 M6 Join Date: Jul 2020
Location: OR
Posts: 479
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Pulley combinations and low side support
I am awaiting delivery of the following parts:
Ported (stock) blower (Jokerz) 2" LT headers (no cats, crushed pipe delete, into stock NPP) RF Big Gulp Nick Williams TB Elite CC Cordes expansion tank NGK LTRIX7 plugs 14% ATI pulley I have a couple of questions I would appreciate you guys to weigh in on: (1) Those of you with lower and upper pulley mods; why not a 20% lower as opposed to a lower and upper swap? (2) If I choose a 20% pulley, will a JMS low side booster support a Reliable supply of fuel? (3) What are your thoughts on ceramic coating my headers - worth the money or not? Do I need to send them to Swain Tech or is a west coast coater as good as any? (4) Should I run a wide band gauge? And if so, what do you think about the nGuage? Would it be practical for a DD car that will probably see the 1320 once or twice in its lifetime? Thanks in advance for your thoughts. Happy Holidays. |
12-27-2020, 01:15 PM | #2 |
Drives: 2021 Red Hot ZL1 Join Date: Sep 2020
Location: GA
Posts: 3,292
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Header coating is definitely worth it. I went with the Jet Hot 2800F coating and my headers hardly get hot at all. With the stock manifolds, opening the hood after a drive released a ton of heat in the engine bay, with the Kooks 2" headers and Jet Hot coating, it barely feels warm. I can put my hands within 2" of the headers now right after driving the car and they just feel warm.
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12-27-2020, 01:29 PM | #3 | |
Drives: 2019 ZL1 Join Date: Mar 2019
Location: NJ
Posts: 1,535
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Heat/heatsoak is going to be a problem overdriving the stock blower 20%. Most don't recommend going past 15% and neither would I. My car was a dog in summer with pulley combo. Your going to run out of fuel high side before low side is an issue which only a cam is going to fix. About 800 is when you'll need to go with a low side ans of course much earlier running ethanol. |
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12-27-2020, 01:37 PM | #4 | ||
Drives: 2017 Chevrolet Camaro ZL1 M6 Join Date: Jul 2020
Location: OR
Posts: 479
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12-27-2020, 01:49 PM | #5 |
Oh Oh it's Friday Night!
Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018
Location: Walton Woods
Posts: 1,067
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Agree with all of the above. Coating headers is worth the price; reduced temps under hood, quicker cool down, extends life of headers. Spinning the lower pulley at 20 may run in to heating issues and reduced power. You will feel plenty of low end pull with at 14-18.
__________________
2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm
Four that wanna own me Two that wanna stone me One says she's a friend of mine... |
12-27-2020, 02:15 PM | #6 | |
Drives: 2017 Chevrolet Camaro ZL1 M6 Join Date: Jul 2020
Location: OR
Posts: 479
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12-27-2020, 03:28 PM | #7 |
Drives: 2021 Red Hot ZL1 Join Date: Sep 2020
Location: GA
Posts: 3,292
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18% is the max for the stock blower before it becomes a heat pump. Above 15% and additional cooling capacity is probably best.
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12-27-2020, 04:26 PM | #8 |
Drives: 2017 Chevrolet Camaro ZL1 M6 Join Date: Jul 2020
Location: OR
Posts: 479
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Are we talking about heat issues just driving around sedately or only pushing the car?
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12-27-2020, 04:49 PM | #9 |
Drives: 2021 Red Hot ZL1 Join Date: Sep 2020
Location: GA
Posts: 3,292
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12-27-2020, 05:38 PM | #10 |
Drives: 2017 Chevrolet Camaro ZL1 M6 Join Date: Jul 2020
Location: OR
Posts: 479
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So, if I don’t do back to back pulls, I should be ok with a 20% pulley? I do not flog my car often and never continually. Maybe a roll from 70 and then a sedate continuation to where I’m going. Maybe a hard push through second gear, getting on the freeway, and back to normal driving. Shouldn’t I be able to push the blower a little harder under these circumstances?
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12-27-2020, 07:14 PM | #11 |
Oh Oh it's Friday Night!
Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018
Location: Walton Woods
Posts: 1,067
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^This^
__________________
2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm
Four that wanna own me Two that wanna stone me One says she's a friend of mine... |
12-27-2020, 07:17 PM | #12 | |
Drives: 2021 Red Hot ZL1 Join Date: Sep 2020
Location: GA
Posts: 3,292
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12-27-2020, 07:26 PM | #13 | |
Drives: 2019 ZL1 Join Date: Mar 2019
Location: NJ
Posts: 1,535
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Its just not worth it, the bricks cant keep the blower cool. Youll notice this much more as IAT's rise in summer heat. |
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12-27-2020, 07:50 PM | #14 | ||
Drives: 2017 Chevrolet Camaro ZL1 M6 Join Date: Jul 2020
Location: OR
Posts: 479
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All right, fellas - 18% it is. Thanks for all your kind but firm advice. It is my troublesome nature to try and make the wheel just a little bit rounder! Thanks again, I sincerely appreciate it. |
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