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Underbody braces, turbos and more!

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 Post subject: Re: COLD AIR INTAKE idea
PostPosted: Wed Jul 30, 2008 8:20 pm 
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Joined: Thu Jul 03, 2008 7:10 am
Posts: 48
Location: united states
i have a k@n air filter should i remove the the box under the wheel well and the rubber thingy in the inside fender to stop the cool air from coming in the engine compartment or should i leave it.i am trying to get the most mpgs,what do you guys think?
jb :huh:


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 Post subject: Re: COLD AIR INTAKE idea
PostPosted: Wed Aug 13, 2008 8:23 pm 
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Joined: Wed Jun 06, 2007 9:01 pm
Posts: 147
Location: Massachusettes
Get rid of that damn box.
#1 It lets the car breathe SO much better! Ive personally felt a little increase in responce time.
#2 Mpg should increase a tid-bit without that box, again because the car can breathe better.
#3 The sound. Your intake will be a bit louder, but more aggressive sounding.

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 Post subject: Re: COLD AIR INTAKE idea
PostPosted: Thu Aug 14, 2008 7:05 am 
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Joined: Tue Apr 29, 2008 8:06 pm
Posts: 1445
Location: Atlanta GA 30052
swift13b wrote:
so on a MPFI motor, having the coolant lines to the tb are just for emission reasons? ive got charge temps that im certain are over 60*C, even with meth and the intercooler, if I can drop even 5 degrees off the temps entering the engine, to me, it seems worth it. I realize its not as easy as taking them off and plugging them, or routing them together with my current throttle body, but all that aside, im wondering about removing coolant from intake system

On a daily driver in Canada, I'd leave the water connected. It helps running in cold weather.
Seven yrs ago it was common to remove the water piping on top of the Nissan 280ZX manifold in warmer climates for reliability and appearance. There are several 2" long hoses (see upper right of pic). While i was assembling the turbo system in my 240Z (240hp at the wheels) i included a $20 outdoor digital thermometer in front of the TB, after the turbo, and after the intercooler. The air-air Porsche intercooler acted as a heat sink and was amazing until it warmed up. I recall that for the first 10 minutes the IC removed all the heat that the turbo added. I did not measure temps, power, or MPG with the water on the throttle body.
180 degree water could cool hotter air but my bet is: the air by the engine is 120. I'll see if i still have a working thermometer. the wires broke at the hose clamps after 30 hrs.


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280zxT old manifold CU.jpg
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daily driver: red 1991 Metro 3cyl 5sp, roof rack, 8 degree advance,
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completed frame up restoration: black 1994 Swift GT 5sp -- like new ! 45mpg
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 Post subject: Re: COLD AIR INTAKE idea
PostPosted: Thu Aug 14, 2008 7:12 am 
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Joined: Tue Jul 20, 2004 7:17 pm
Posts: 3566
Location: Georgetown, Guyana
xrw44 wrote:
On a daily driver in Canada, I'd leave the water connected. It helps running in cold weather.


See now - that there was why I asked this question in an earlier post ....

fordem wrote:
Now - I have a question for the folks running cold air intakes in the colder climates - anyone ever have a problem with the throttle body icing up on them?

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 Post subject: Re: COLD AIR INTAKE idea
PostPosted: Fri Aug 15, 2008 3:02 pm 
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Joined: Thu Jul 03, 2008 7:10 am
Posts: 48
Location: united states
makes sense to me :D


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