Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: RedRummy on May 24, 2007, 10:30:49 PM

Title: Custom intake / airbox?
Post by: RedRummy on May 24, 2007, 10:30:49 PM
Hi,

My FD is running ~350bhp and its got a mahoosive FMIC and a bigger radiator. This, combined with the twin oil coolers means my front end grill space is pretty much taken up...

The intakes for my twins sit right behind the rad / FMIC and I reckon the intake temp is being raised by having to share air with the rad...

Anyone got any ideas how I can route some fresh cold air onto the intakes..?

I\'ve got the 99 spec Mazda front end...
Title: Custom intake / airbox?
Post by: LRP on May 24, 2007, 10:37:35 PM
350 on twins i should think they are getting warm anyway of ducting cold air with the use of flexi tubing from the floor??
Title: Custom intake / airbox?
Post by: RedRummy on May 24, 2007, 10:52:01 PM
Quote from: LRP350 on twins i should think they are getting warm anyway of ducting cold air with the use of flexi tubing from the floor??

well, dunno really... don\'t wanna start pushing water / grit and crap into them :flamed
Title: Custom intake / airbox?
Post by: LRP on May 24, 2007, 11:01:54 PM
Quote from: RedRummywell, dunno really... don\'t wanna start pushing water / grit and crap into them :flamed
i run my filter sat inbetween my v- mount geting forced everything that comes at it and hav never had a problem dpsent seem to get dirty??
Title: Custom intake / airbox?
Post by: interloper393 on May 24, 2007, 11:03:22 PM
re-locate them into the drivers wing and vent the wing, i have similar plans to free as much space as poss under the bonnet
Title: Custom intake / airbox?
Post by: gmogle on May 25, 2007, 07:28:53 AM
Sell the 99 spec bumper to me ;-) and buy one with a wider centre opening !!!!
Title: Custom intake / airbox?
Post by: d-king on May 25, 2007, 08:28:16 AM
Quote from: interloper393re-locate them into the drivers wing and vent the wing, i have similar plans to free as much space as poss under the bonnet
ive looked into this but it cant be done with twin oil coolers :0( doh
Title: Custom intake / airbox?
Post by: interloper393 on May 25, 2007, 09:04:50 AM
im sure theres a way ma man.. :) is the oil pipe work running along that direction? not had anything off yet to have a nosey, wont be doing it to the black car but the next one im trying to remove as mucho as possible..
Title: Custom intake / airbox?
Post by: RedRummy on May 25, 2007, 02:41:33 PM
Quote from: interloper393re-locate them into the drivers wing and vent the wing, i have similar plans to free as much space as poss under the bonnet


thats a plan i spose, but really don\'t want to hack into the wing... it\'d mess up the sexy body lines  ;)

Quote from: LRPi run my filter sat inbetween my v- mount geting forced everything that comes at it and hav never had a problem dpsent seem to get dirty??

hmm... that does seem the most sensible suggestion... actually thinking about it won\'t the undertray block direct air getting to the intakes anyway..


Here\'s the engine bay... you can see the problem.
Title: Custom intake / airbox?
Post by: RedRummy on May 25, 2007, 02:44:35 PM
would a Power FC show the intake temps?

I\'ve got an Apexi ECU, but no commander :((
Title: Custom intake / airbox?
Post by: RemarkLima on May 25, 2007, 03:20:06 PM
Well, why not run the Mazda route?

They seperated the 99 spec air flow so it sucked in air underneath the number plate section and had it\'s own seperate intake.

I wouldn\'t worry too much about the Ram Air effect as the turbo\'s will suck more than any ram air can deliver, so just make sure it\'s sucking a cold source.

I\'ll see if I can dig out the Mazda diagrams...

All IMHO.
Title: Custom intake / airbox?
Post by: danrx7 on May 25, 2007, 03:20:45 PM
The Power FC Commander displays both water and intake temps..
Title: Custom intake / airbox?
Post by: RemarkLima on May 25, 2007, 03:23:25 PM
Ah here it is:
http://www.rx7.net.nz/newrx7.htm

(http://www.rx7.net.nz/vent.JPG)
Title: Custom intake / airbox?
Post by: Jonathan_F on May 25, 2007, 07:47:25 PM
Quote from: RedRummythats a plan i spose, but really don\'t want to hack into the wing... it\'d mess up the sexy body lines  ;)



hmm... that does seem the most sensible suggestion... actually thinking about it won\'t the undertray block direct air getting to the intakes anyway..


Here\'s the engine bay... you can see the problem.

Hi. I\'ve a similar setup. I dropped 15 deg C inlet temps by moving the rad and intercooler over to the right as far as poss and putting a panel in to direct air from the front around the rad to the intake. I only achieved a 3inch gap. It was enough though. This will improve rad/cooler efficiency by preventing air from passing round the sides. win-win.

Take care that the rad/cooler does not wear through on the frame rail.

Jon
Title: Custom intake / airbox?
Post by: Jono FD3 on May 25, 2007, 08:29:39 PM
Quote from: d-kingive looked into this but it cant be done with twin oil coolers :0( doh

Your just not trying hard enough:rolleyes: !!!! Nothing is impossible...... just some things are more difficult to get your head around:Thumbs-up !!

Jono