Best cold air intake?
Adrenaline
Joined: Feb 2001
Posts: 1,261
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From: Long Island, NY
*Warning*
If you plan on upgrading to a cold air intake you will most likely run into problems if you plan on upgrading to an aftermarket intercooler. There will most likely be some clearance problems, this is not for all intakes, however, most of them will end up being a problem.
I didn't feel like looking through all the post, someone probably said the same thing I just wrote.
If you plan on upgrading to a cold air intake you will most likely run into problems if you plan on upgrading to an aftermarket intercooler. There will most likely be some clearance problems, this is not for all intakes, however, most of them will end up being a problem.
I didn't feel like looking through all the post, someone probably said the same thing I just wrote.
Senior Member
Joined: Mar 2001
Posts: 492
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From: SF
Originally posted by KZ1
I also bet that the temps of the pettit cold-air intake and M2 are the same when driving, porblemw ith open air intakes is that they get hot as hell when stopped.
I also bet that the temps of the pettit cold-air intake and M2 are the same when driving, porblemw ith open air intakes is that they get hot as hell when stopped.
Senior Member
Joined: Mar 2001
Posts: 492
Likes: 0
From: SF
Originally posted by Barwick
You're gonna eventually overheat your motor on hot days if you leave that foam off the radiator. There's a reason it's there. It's made to force air through the radiator before it enters the engine bay. If too much air goes AROUND it, it'll do 2 things: First, lessen the amount of air going through the radiator. Second, it'll build up higher pressure in the engine bay, disallowing even MORE air from coming through the radiator. Your engine will not like you for it.
You're gonna eventually overheat your motor on hot days if you leave that foam off the radiator. There's a reason it's there. It's made to force air through the radiator before it enters the engine bay. If too much air goes AROUND it, it'll do 2 things: First, lessen the amount of air going through the radiator. Second, it'll build up higher pressure in the engine bay, disallowing even MORE air from coming through the radiator. Your engine will not like you for it.
Full Member
Joined: Apr 2002
Posts: 174
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From: new york
ok what about the plastic piece that connects the air intake to the radiator intake? my understadning of the stock intake (on a 93) is that all the air comes in thru the radiator than enters this maze that goes from the back on the radiator to the air intake. I opened up my stock box on the bottom and am fashioning a scope to be mounted next to the radiator to get fresh air into the intake. can I remove the plastic maze thingy?
Thanks
Thanks
Full Member
Joined: Sep 2001
Posts: 113
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From: Hermosa Beach, CA
Why pay hundreds of $$$ just to suck hot air?
The stock air box mod with K&N drop in is the way to go. Cant beat $60 and no noise.
http://www.rx7turboturbo.com/robrobinette/coldair.htm
This is interesting as well:
The third-generation RX-7 had come off Mazda's rigorous development test programs on the bench and on the demanding Global Road Circuit section of the Miyoshi Proving Ground with flying colors. Yet, there was one arduous test left undone. When the car was taken to a race track near Tokyo known for its tight turns requiring short bursts of speed followed by fierce deceleration, the pride of Mazda's rotary rocket team quickly cooked its powerplant when pushed to the limit. Subsequent investigation revealed that air temperature at the entry area had risen as high as 50 C (122 F). Fresh air for the engine's consumption was taken from the single intake that also fed to the air-to-air intercooler. On wide-open driving, air flow reversed its course from the intercooler and went straight into the engine's intake. The intercooler was acting as an inter-heater! In the updated RX-7 with a designed fascia, fresh air is taken through a separate, dedicated duct guided by a newly installed air-guide. Air temperature at the engine's intake entry area has been halved to about 25 C ( 77 F), which adds about 7 kW (10bhp) to the output.
http://www.rx7turboturbo.com/robrobinette/coldair.htm
This is interesting as well:
The third-generation RX-7 had come off Mazda's rigorous development test programs on the bench and on the demanding Global Road Circuit section of the Miyoshi Proving Ground with flying colors. Yet, there was one arduous test left undone. When the car was taken to a race track near Tokyo known for its tight turns requiring short bursts of speed followed by fierce deceleration, the pride of Mazda's rotary rocket team quickly cooked its powerplant when pushed to the limit. Subsequent investigation revealed that air temperature at the entry area had risen as high as 50 C (122 F). Fresh air for the engine's consumption was taken from the single intake that also fed to the air-to-air intercooler. On wide-open driving, air flow reversed its course from the intercooler and went straight into the engine's intake. The intercooler was acting as an inter-heater! In the updated RX-7 with a designed fascia, fresh air is taken through a separate, dedicated duct guided by a newly installed air-guide. Air temperature at the engine's intake entry area has been halved to about 25 C ( 77 F), which adds about 7 kW (10bhp) to the output.
Originally posted by WANKEL POWER
Okay, is there a difference between the stock air box mod vs. the dual k&n filter mod (referring to rob robinette's site) ? Im going to do one of them, just dont know which one yet.......
Okay, is there a difference between the stock air box mod vs. the dual k&n filter mod (referring to rob robinette's site) ? Im going to do one of them, just dont know which one yet.......
http://www.rx7turboturbo.com/robrobi...kn_filters.htm
If so, then yes there is a difference. The one above gives you basically an open air intake. Some people argue that this is bad on the car (since it will breate in warm engine air, but that's really only the case when the car isn't moving).
Some people say the stock air box is too restrictive so they want to get rid of it all together. It really depends on what you want.
