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cooch t31
X-TRAIL HOLIC
Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re: Intercooling with water vapour
There are are lot of variables that can go wrong with this, especially with controlling the amount of fog at different speeds. It will need more fog as the rpms increase. All I can picture is you dialing it in manually inside the cab.
See that your only fogging the inlet before the MAF, would it be a better idea to relocate the intercooler to the front of the Xy's grill. That way your getting colder air.
If you get it working, it probably be more efficient than a water injenction system.
Either that or you just fill the intercooler with dry ice all the time.
--- Tony X-891c
HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1
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7/Dec/2009, 4:41 am
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Revhead Kev
Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: Intercooling with water vapour
So if the MAF is before the intercooler, how does the ECU get the correct air flow mass and temp data for injection and timing to give correct combustion ?
--- Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
My Blog
My CarPC Worklog
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7/Dec/2009, 11:58 am
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basshead
X-TRAIL HOLIC
Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Re: Intercooling with water vapour
I suppose you've already thought of water-spray onto the i/c. My brother set one up on his WRX about a decade ago, running from the windscreen-washer bottle (or a secondary one). If heat-soak of the i/c is your main concern, this may be a simple solution. Only for an hour's worth of stop-start driving, you might need a big jerry-can instead of a washer-bottle
I used an even simpler method on my N/A Pulsar, which has already been mentioned - ran a new intake ducted from the fog-light hole in the lower bumper, with a 120mm 12v PC cooling fan sitting at the air filter end of the ducting, so when I sat at lights, it was sucking in cold (outside) air (and creating positive pressure in the custom heat-shield/filter-box), so I didn't have the terrible heat-soak acceleration lag...
http://ww2.datazap.net/ftp/basshead/pulsar_cai.html
http://ww2.datazap.net/ftp/basshead/pulsar_heatsh.html
I've done a similar thing with the X-Trail, minus the 12v fan, and retained the factory filter-box (still covered in the same heat-reflective foam). I still get heat-soak (displayed in cabin using 3x in/out temp-gauges) but probably nowhere near as bad as retaining the factory intake position behind the grille.
--- Rich. X-013(c)
'04 S2 ST Auto. Nudge_roofracks_tow_tints_Lightforce_GME_YokoGeoA/T-S_TBS_bashplate_50mm-spacer-lift
Click here to see >300MB of photos and videos All For His Glory.
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9/Dec/2009, 8:32 pm
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hiimkam
X-TRAIL FANATIC
Date Registered: 11-2008
Location: Perth
TOTAL POSTS: 414
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Re: Intercooling with water vapour
Hey dude, good to see another X-trail with forced induction goodness
RE water injection: Its seriously the sh!t. Really good way to DRASTICALLY drop intake temps.
I think a few people are getting confused with water sprays on the intercooler as opposed to water injection. Ive considered it too, still am in fact!
But if i was you, id just go for a FMIC instead.
They are a thousand times better that top mounts...
the ONLY downside, is slightly longer intake piping.
Mine works perfect where it is. Under normal warm engine, sitting in traffic even, the intercooler stays COLD... only starts to warm up AFTER the engine is off (heat radiation).
have a look in my build thread, page , for where my intercooler is.
http://www.runboard.com/baustralianxtrail.f17.t127322
Why not have a look into alcohol or methanol injection too?
they all work under the same principle, and all have different pros and cons.
But if i was you, pick up a cheap cooler off ebay (you can pay 600+ for one, but ther all the same...) andmeasure up some ally piping... bobs your uncle!
--- GT2860rs, Ems stinger, tial external gate, 3" exhaust, 10psi and ~200kw @ all fours. Koya drifteks w/245/50 rubber, 70mm lowered springs, slotted rotors and painted calipers :)
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11/Dec/2009, 9:00 pm
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