My J's Racing Intake Installation...


D'janiero said:
Tough choice, but which do you prefer more, the v2 or the J's racing?. Both sound like top quality induction kits:)
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i couldn pick between the two i find them both equally as good as each other...the only bad thing ill say about the v2 is it rains alot over here an they get the filter wet awful easy which is bad cos dont want a water locked engine if it sucks in too much from say a puddle!!:mad:
 
Ive been doing some research on the two, and some of the guys in the states reccon the j's racing only performs well upto 3500 rpm and the v2 wins hands down out of the two, as its a CAI.
Also do you have any issues with heat soak with the j's racing kit?
 
Hang on, that dyno graph is probally done with the hood down. so obviously the J's intake would have been sucking HOT air which would compensate the lower figures. AEM is a cold air intake not short ram like J's. If J's intake were to be fed cold air then figures would change.

More colder air = more oxygen molecules = more power.

J's intake design obviously has more volume for top end than the AEM just like the same theory with the Exhuast.
 
I'll take some pics of my temporary heat shield that made a difference. As long as you can seal up the intake area and fed cold air into it, you'll be making a lot more power.

I was thinking to add a computer fan or something there to continously draw and blow cold air from my pipe onto the pod filter, this might stop the hot air from moving towards the pod filter.
 
all dyno runs are supposed to be run wit the bonnet up an a cold feed blowin at the engine....if the bonnet was down it'd jus create a pocket of heat around the engine makin it hotter an the indution kit would suck it in loosin power...the v2 would do the same but it wouldn suck in as much heat!!
 
jugbugz said:
I'll take some pics of my temporary heat shield that made a difference. As long as you can seal up the intake area and fed cold air into it, you'll be making a lot more power.

I was thinking to add a computer fan or something there to continously draw and blow cold air from my pipe onto the pod filter, this might stop the hot air from moving towards the pod filter.
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i dont think a computer fan would do it...they wouldn be powerfull enough...its ok workin in a room but introduce it to open air an it would still never compete wit the engines heat....you'd want somethin thats about a quarter or half the power of your radiator fan 2 keep cool air goin into the filter wen the car is idling
 
So if the bonnet was up, and the J's had a cold air feed running to it, the figures would have been alot better?
Can a short ram work as well as a CAI kit though, i.e. its sat in the engine bay, while a CAI is further away from the engine?
 
D'janiero said:
So if the bonnet was up, and the J's had a cold air feed running to it, the figures would have been alot better?
Can a short ram work as well as a CAI kit though, i.e. its sat in the engine bay, while a CAI is further away from the engine?
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as long as you get a good enough cold feed to the filter theres no reason it cant be as good..like you could make a plate that blocked the filter off from the engine so less heat could get at it!!an bring a cold feed in through the plate to where the filter is less heat soak more power
 
Seems like a good idea dude, but would'nt it be more logical to get a CAI instead?
 
D'janiero said:
Seems like a good idea dude, but would'nt it be more logical to get a CAI instead?
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yup it would but they usually twice the price of a short ram kit...you could get a piece of metal stainless steel or aluminium for a few dollers or euros an have a good heatsheild for your filter all you'd have to do if drill a hole or two an cut it to shape for still roughly have the price:nice:
 
Cool. Thanks for the info:nice: It rains quite alot down here in manchester, so the short ram and heat sheild might be a better option actually:)
 
Actually, in higher rpms with an equal temperature air source, a short ram makes more power than the longer cold air intake. Short rams also give more throttle response than a cold air intake, because of the short tube. Not to mention easier filter servicing.
So what do you do? Isolate the short ram filter from engine bay air, either with a heat sheild, or even better with a fully enclosed box that has a large tube going to a cold air source (in front of fender shroud). Look at the comptech ice box or the mugen intake if you need an example. (these don't suck up water as well)
 
Interesting. I always thought that a cai would perform better in the higher rpm range than a short ram?.
What intake are you using dude?
 
ya short ram is better if it rains alot like it does here...i only use the v2 in my track car an i only go the track wen its dry out but i used to have it in my road car until i got the j's short ram....i no the short ram has better throttle response alrite but top end im not sure about both my engines are b18c an i find the track one wit the v2 a lil bit better in the top end
 
D'janiero said:
Interesting. I always thought that a cai would perform better in the higher rpm range than a short ram?.
What intake are you using dude?
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Think about it the same way as the intake manifold, one with short runners like the type-r is more optimized towards high rpm than one with long runners like the b18a1. (although advances in design have proved this theory less relevant with certain IM's)
I'm using the comptech ice box.
Way2fastforu the only way to be sure of where each intake performs is to do dyno testing with both intakes. The v2 may feel better than the J's because it has a cold air source, the short ram is sucking in hot air until it is given an isolated or direct cold air source. You should try tests with an open hood, cold air source on both, then a test with the engine hot and the hood closed.
Cold air intakes do have the benefit of better torque in the low to mid rpms vs. a short ram.
 
way2fastforu said:
all dyno runs are supposed to be run wit the bonnet up an a cold feed blowin at the engine....if the bonnet was down it'd jus create a pocket of heat around the engine makin it hotter an the indution kit would suck it in loosin power...the v2 would do the same but it wouldn suck in as much heat!!
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hmmm, the AEM sucks in cold air with the bonnet up or down. The pipes goes down to where the mugen goes to, which is where my cold air feed pipe is right now. Short ram always has less restriction with shorter pipes and less bends. My friend dyno'd his car with short ram pod filter and bonnet down. This shows the proper figures on what it will do on the road. :nice:

Theres no way J's intake would make less than AEM with cold air. Thats kinda saying a slightly restricted exhuast would perform better than a free flowing exhuast at top end...:shocked: :nice:
 
D'janiero said:
So if the bonnet was up, and the J's had a cold air feed running to it, the figures would have been alot better?
Can a short ram work as well as a CAI kit though, i.e. its sat in the engine bay, while a CAI is further away from the engine?
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Short ram + cold air = Best intake.

CAI is prefered because you can't always get cold air fed to a Short Ram intake. So CAI would generally perform better in most cars. But yes Short Ram + cold air is the best you can get, with the exception of Individual Throttle Bodies:)angry2:i want one) fed with cold air.:nice:
 
Dino-Spumoni said:
Think about it the same way as the intake manifold, one with short runners like the type-r is more optimized towards high rpm than one with long runners like the b18a1. (although advances in design have proved this theory less relevant with certain IM's)
I'm using the comptech ice box.
Way2fastforu the only way to be sure of where each intake performs is to do dyno testing with both intakes. The v2 may feel better than the J's because it has a cold air source, the short ram is sucking in hot air until it is given an isolated or direct cold air source. You should try tests with an open hood, cold air source on both, then a test with the engine hot and the hood closed.
Cold air intakes do have the benefit of better torque in the low to mid rpms vs. a short ram.
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Dino: Correct!!! Short ram provides better response due to no restriction and more air mass available at top end. CAI has long pipes which will create a restriction in air movement at top end.:nice:

way2fastforu: Short ram will always perform better at top end with more air mass available and less restriction like a free flowing exhuast... longer pipes do create some velocity down low and low-mid but suffers with restriction at top end when VTEC kicks in.

D'janiero: nah, it's easy,:) just think of it like this, CAI will give you more consistancy in power because COLD AiR = more Oxygen molecules = more power consistantly.
Short Ram isn't consistant because of engine heat under bonnet and summer days. But if you can shield off the intake area very well and provide some cold air then it'll be as good as a CAI or better.

You would have noticed that I've already got a CAI with the modified Stock air box. Me and RVM have done this mod and thought it was very good and provided better consistancy in power. Now I've changed from my modified stock intake to a short ram. I want the sound, response and top end power.

I'm still trying to figure out what would be the best way to give it more cold air...:nice:
 
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