HT Chaplain

I heard the short ram was better but also heard CAI was better because the JRSC generates alot of heat. Help me out and choose one and offer explanations. Thanks

MooreBoost

JR suggests a short ram, but I can't figure out why. I would go CAI.

Rory Breaker

According to the dynos Ive seen, JRSC's tend to like a shorter, wider diameter intake than a longer, smaller diameter.

Your best bet is probably something like the Icebox that routes cold air to the filter on a short, fat pipe.

Honda_RN

yeah its short ram>

Rory Breaker

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MooreBoost &raquo;</TD></TR><TR><TD CLASS="quote">JR suggests a short ram, but I can't figure out why. I would go CAI.</TD></TR></TABLE>

Thing is, the "cold air" is negligible since the charger heats up the air so much by itself. So if the incoming air truly is x # of degrees less than a short ram (which I actually would like to see tested independently with before and after IAT's), its going to get heated up to x temperature by the hot charger anyway.

Its more about air delivery, not so much air temperature in terms of intakes with the JRSC.

ProjectDarkBlack

a cold air could result in higher intake temps, because the blower has more resistance to sunck in air

keebler65

there are numerous previous threads that back up the short ram intake for the JRSC. it is your best bet.

MooreBoost

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by newgsrdriver &raquo;</TD></TR><TR><TD CLASS="quote">

Thing is, the "cold air" is negligible since the charger heats up the air so much by itself. So if the incoming air truly is x # of degrees less than a short ram (which I actually would like to see tested independently with before and after IAT's), its going to get heated up to x temperature by the hot charger anyway.

Its more about air delivery, not so much air temperature in terms of intakes with the JRSC.</TD></TR></TABLE>

I see your point, but the charger isn't going to excrete the air at a given temp regardless of the input temp. I agree that the charger will increase the temp alot, but a CAI has to effect the output temp slightly, and a gain is a gain, right?

Rory Breaker

Thats what I mean....it isnt like, ok, the charger heats the air up to 160 degrees if the air coming in is 80 degrees...so if the air coming in from a CAI is 60 degrees, then it must reduce the intake temperatures by 20 degrees. It isnt like that. Thats also what I meant by Id like to see someone with a CAI actually datalog IAT's back to back with a short ram just for ***** and giggles to see how much, if any, it affects actual IAT's.

HT Chaplain

Thanks guys for the replies. Short ram it is, dyno #'s dont lie.

HitEm'Up

I run a short ram on my charger seems to work good

MooreBoost

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by newgsrdriver &raquo;</TD></TR><TR><TD CLASS="quote"> the charger heats the air up to 160 degrees if the air coming in is 80 degrees...so if the air coming in from a CAI is 60 degrees, then it must reduce the intake temperatures by 20 degrees. It isnt like that.</TD></TR></TABLE>

Why isn't it like that?

Rory Breaker

Because I would think the heat that the charger generates heats that air up to x # of degrees anyway. If that charger is blowing 160 degree air, its blowing 160 degree air. The temperature of the air isnt whats heating the charge up, its the design of the blower.

When the air is compressed, its heated up. This heat is generated by the charger, which transfers to the manifold...thats where heat soak enters. That air is getting compressed and heated to x # of degrees, regardless if its 10 or 20 degrees less in temperature. Im thinking for the intake temps BEFORE getting compressed to make enough of a difference to keep the chargers heat output down, it would have to be significantly colder.

It would be like putting an intercooler BEFORE the turbo. That airs getting heated up by the compressor no matter what temperature it is (reasonably speaking obviously).

HYREV2NR

I went 1 step farther...forget the short-ram & just put the filter right on the throttle body. If U don't have enough room for that, K&N makes a great deal of different filters that will.

roadrunner

Nick,

The blower will generally heat the charge a given amount, so you'll see pretty much a fixed increase in degrees F, C, whatever. Likewise, dropping the charge by 20F before the blower will usually a 20F drop in the manifold. Sure it's better to cool the charge after the blower, but for the JRSC, this is usually a very expensive proposition.

BTW, most short-ram intakes produce more power on the dyno because the hood is opened when the dyno run is taking place. Let them get a good heat soak with the hood closed and the next run should see a measureable decrease in power. The CAIs usually have more uniform measurements, though I too prefer the Comptech solution. I had a 3-inch pipe routed to my stock airbox fitted with BSQs Ghetto Icetake since I didn't want to spend $350 for roughly the same thing...

SoEvoL

my understanding is a 3" short ram will be more benifitcial over a cai, because air velocity over a short ram is more important over colder charge but longer distance to travel.

anyways, i had a cai, i just chopped my aem into a short ram. i fear the rain and bypass is not a superchargers friend.

Rory Breaker

I would think it would be more proportional somehow even if it did make a difference. I dont think the charger heats the air up X amount of degrees. So starting at 20 nets you 20degrees cooler air. I dont think it works like that, I would love to see some IAT's either way.

And I agree, its not so much the temperature of the air as much as it is the delivery.