CO2 or manifold pressure for boost control
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CO2 or manifold pressure for boost control Can't decide one way or the other. I do not want trouble keeping the gates shut to build boost quickly on the footbrake. Gates are well prioritized and will have exhaust pressure on them. I have easy access to CO2, so not worried about having a bottle or two around. I don't want the weight and expense of onboard air. If I can control boost well with just a 4 port MAC valve, I'm ok with that. I like simple, but want to have good control of the boost. Maybe just start off with the MAC valve and see how it goes?
Can't decide one way or the other. I do not want trouble keeping the gates shut to build boost quickly on the footbrake. Gates are well prioritized and will have exhaust pressure on them. I have easy access to CO2, so not worried about having a bottle or two around. I don't want the weight and expense of onboard air. If I can control boost well with just a 4 port MAC valve, I'm ok with that. I like simple, but want to have good control of the boost. Maybe just start off with the MAC valve and see how it goes?
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From: Mechanicsburg, PA
This car is a behemoth. So any weight is bad weight, lol. Having a family member in the paintball business means the CO2 system is free other than a pair of 3 port MAC valves. So take my expense comment tongue in cheek.
CO2 it is! You’ll be extremely pleased with how accurate the boost control is. Holley system?
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From: Mechanicsburg, PA
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My ARB CKSA12 Air pump weighs about 3 lbs.. and used a pair of mac valve for my air lockers.
Once installed its free to run and no dinking around with filling tanks.
But how much CFM do the gates require? the size bottles I see it cant be much.
Taking a quick look at jegs, a C02 bottle and regulator and solenoid look about the same price as my ARB setup..
The electric compressor can also keep up with minor leaks so you don't lose a day at the track if your bottle is empty..
The ARB compressor handles about 100 lbs easily. When I engage my locker, after the 3rd or 4th cycle it turns on for like 5 seconds.
Once installed its free to run and no dinking around with filling tanks.
But how much CFM do the gates require? the size bottles I see it cant be much.
Taking a quick look at jegs, a C02 bottle and regulator and solenoid look about the same price as my ARB setup..
The electric compressor can also keep up with minor leaks so you don't lose a day at the track if your bottle is empty..
The ARB compressor handles about 100 lbs easily. When I engage my locker, after the 3rd or 4th cycle it turns on for like 5 seconds.
Thread Starter
TECH Resident
Joined: Sep 2013
Posts: 993
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From: Mechanicsburg, PA
My ARB CKSA12 Air pump weighs about 3 lbs.. and used a pair of mac valve for my air lockers.
Once installed its free to run and no dinking around with filling tanks.
But how much CFM do the gates require? the size bottles I see it cant be much.
Taking a quick look at jegs, a C02 bottle and regulator and solenoid look about the same price as my ARB setup..
The electric compressor can also keep up with minor leaks so you don't lose a day at the track if your bottle is empty..
The ARB compressor handles about 100 lbs easily. When I engage my locker, after the 3rd or 4th cycle it turns on for like 5 seconds.
Once installed its free to run and no dinking around with filling tanks.
But how much CFM do the gates require? the size bottles I see it cant be much.
Taking a quick look at jegs, a C02 bottle and regulator and solenoid look about the same price as my ARB setup..
The electric compressor can also keep up with minor leaks so you don't lose a day at the track if your bottle is empty..
The ARB compressor handles about 100 lbs easily. When I engage my locker, after the 3rd or 4th cycle it turns on for like 5 seconds.
Agreed, I can't see it taking much volume for gate control. Leaks aside. I figure I'll start with a 12oz bottle and upgrade to 20oz if necessary. I'll save the air compressor for the '50 Buick air ride setup!
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From: PDX-OR-USA
Yep if you do a real good job at assembling the lines should be fine,, FWIW,, Napa sells black air line for freight truck and air brake systems. Lots of cool fittings and stuff and the quality is way better than most other types.. One of the cool lines is a pre-coiled line that's about a foot long but stretches way out, worked great for dropping down to my axles. For my long runs I used brake line and a dab of copper coat on all the fittings threads. When not running the lockers the compressor stays up for days.
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Thread Starter
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Joined: Sep 2013
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From: Mechanicsburg, PA
For anyone interested. We used a 9 ounce paintball CO2 bottle, beer keg regular (slightly modified), a pair of MAC 3 port valves and an S bracket. I’ll weigh it full and let you know.