what is the max cfm that can be used on a light to medium build turbo 2110
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what is the max cfm that can be used on a light to medium build turbo 2110
Pull through or blow through?
Turbo size?
Exhaust valve, port, pipe size?
Head casting/manufacturer and work done?
Cam specs?
A little more info needed, especially when speculating on a boosted engine.
Let's have some specs ! ! !
Turbo size?
Exhaust valve, port, pipe size?
Head casting/manufacturer and work done?
Cam specs?
A little more info needed, especially when speculating on a boosted engine.
Let's have some specs ! ! !
and "max cfm" is not the limiting factor to a vw engine. Visit "shoptalkforums.com" , there is a single port in the 12's/1/4 mile.
Ok TC this is what I am planning, you can tell me how far off the mark I am single predator set up for pull thru, don't know what turbo to use,40x35.5 heads light port, eagle 110 cam ,1.5 exhaust no heater boxes
the predator is the reason I was asking about cfm as it can draw from about 300 to about 950 cfm
the predator is the reason I was asking about cfm as it can draw from about 300 to about 950 cfm
OK,
First, as Bruce said, you HAVE to hit this forum:
http://www.shoptalkforums.com/viewforum.php?f=3
They always know everything about everything and have an opinion and excuse to cover their a$$ even when they don't.
A LOT of the guys are running side draft carbs on pull through assemblies these days, They're easy and cheap and work even when they're messed up. The manufacturers or assemblers were trying to use progressive down draft two barrels, but they couldn't keep up with the demands, so most folks have switched to the two barrel Holley on the milder engines. These flow 300 CFM, but they're Holleys and have problems built right in for your pleasure. On the bigger mills they use the four barrel, again, just trash right out of the box, but that's Holleys trade mark, isn't it . . . ?
Your idea of the Predator is perfection. It's hardly ever used/considered because of the price and unfamiliarity with the device, but considering the flow characteristics and cool venturi, you just might have the best carb choice possible.
With a pull through, you'll need a Holley Blue pump (or it's equal) and a boost referenced regulator to keep up, a water/alcohol bottle would be a nice addition as well. We used both and it helped a great deal.
But before you do anything, check in at ShopTalkForums and consider my info as anecdotal.
Luck !
TC
First, as Bruce said, you HAVE to hit this forum:
http://www.shoptalkforums.com/viewforum.php?f=3
They always know everything about everything and have an opinion and excuse to cover their a$$ even when they don't.
A LOT of the guys are running side draft carbs on pull through assemblies these days, They're easy and cheap and work even when they're messed up. The manufacturers or assemblers were trying to use progressive down draft two barrels, but they couldn't keep up with the demands, so most folks have switched to the two barrel Holley on the milder engines. These flow 300 CFM, but they're Holleys and have problems built right in for your pleasure. On the bigger mills they use the four barrel, again, just trash right out of the box, but that's Holleys trade mark, isn't it . . . ?
Your idea of the Predator is perfection. It's hardly ever used/considered because of the price and unfamiliarity with the device, but considering the flow characteristics and cool venturi, you just might have the best carb choice possible.
With a pull through, you'll need a Holley Blue pump (or it's equal) and a boost referenced regulator to keep up, a water/alcohol bottle would be a nice addition as well. We used both and it helped a great deal.
But before you do anything, check in at ShopTalkForums and consider my info as anecdotal.
Luck !
TC
thanks TC I'll try them again
Angus: If your engine had no restrictions it would suck in 0.0745 ft^3 every 2 revolutions. So at 6000 rpm it would suck in 223.5 cfm
Dang, Bruce, you took the words right out of my mouth!!
"Keep in mind that at idle you will only be pulling about 30 cfms or less and if the carb is too big it wont be able to atomize the fuel at such a low flow."
That's where the boost referenced fuel regulator comes into play. Restricted at idle, with an increased flow depending upon the requirements dictated by the boost/pressure within the intake manifold.
That's where the boost referenced fuel regulator comes into play. Restricted at idle, with an increased flow depending upon the requirements dictated by the boost/pressure within the intake manifold.
Yep, too much of anything is not good. You have to build for your usual range and driving type.