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basshead Profile
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X-TRAIL HOLIC
 


Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Factory intake - addition of heatshield wrap & proposed intake modifications


This afternoon after I gave the X-Trail a good long-awaited wash & polish, I had a little time to put on the foam with aluminium foil wrap I bought from USA when I was there in February this year...

While it's not completed yet, I thought I'd put up some photos of how it looks so far. I still need to do the underside of the filterbox, and the little resonator chamber on the engine side of the filterbox, but I don't think I'll worry about doing the huge resonator chamber that is outside/below the engine bay (it's actually in behind the flexible front corner panel). I also need to buy a roll of the air conditioning silver/cloth tape as I didn't have any (I gave all my leftovers to the buyer of my previous car when I finished making up the heatshield for it). That tape will cover up all the gaps and also keep it all in place - I am worried the heat from the engine bay will cause the stuff I've just put on to peel off, as it's adhesive is not very sticky at all.

The foam is approx 3mm thickness; the stuff I used on my previous car was almost identical, except it was at least double the thickness. This product has thicker aluminium - you could almost cut yourself on it; I'd guess it's at least 2 or 3 times thicker than foil; it's almost the thickness of an aluminium can (the old product was more like aluminium foil).

Unfortunately there's probably no accurate way of determining if this is effective. The only way I can think of testing it would be to use a thermometer and see if the intake temperature is maintained all the way to the filterbox, and then set up the thermometer in another unmodified X-Trail (ideally it would've been better for me to have taken some measurements before putting the foam/foil on).

Like I said, I got this product from USA - I wouldn't be surprised if you can get it here - I think I got the old product from Clarke Rubber.




editted 14 Jan 2008...

Have I noticed any performance increase? Probably marginal, but at least I am 90% sure the air getting into the air intake manifold is colder than without the tape-wrap around the ducting emoticon



Image Image Image Image

Image Image Image

I will be posting up some more recent photos as I have covered the silver-backed foam with silver-backed cloth-reinforced self-adhesive air-conditioning tape (about $12 for a 50m roll from a local A/C supply place on Milperra Rd - called WESTAFLEX).

Editted 30 Jan with a/c tape company details.

Admin Edit: Photos converted to thumbnails to reduce page length


Last edited by basshead, 30/Jan/2008, 5:57 pm


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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.
21/Nov/2007, 9:24 pm Link to this post Send Email PM   Send Private Message MSN Yahoo Blog
 
basshead Profile
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X-TRAIL HOLIC
 


Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Re: Factory intake - addition of heatshield wrap.


Here's the latest photos with the air-con reinforced tape:

Image Image Image Image

I have also taken some photos and editting with explanations of ideas for a proposed air intake. I have decided against using the method some other members of the forum have used (such as Brett) as I really don't think I'd be able to make the scoop large enough to be effective, as my Blitz 240 lights are blocking the majority of the grille emoticon I was tempted to drill out all the holes that are blanked-off around the Nissan badge, and extend the scoop across to that area, but again, the spotties don't leave much room for the air to get through.

There's also a tip in the first image on how to remove the foglight cover on the ST (not sure if there is already a FAQ on how to do it).

Image Image Image Image

All supportive comments and criticism welcome emoticon


Last edited by basshead, 16/Jan/2008, 9:23 pm


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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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BRETT72 Profile
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Date Registered: 10-2005
Location: Orange. NSW.
TOTAL POSTS: 1999
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Re: Factory intake - addition of heatshield wrap & proposed intake modifications


Hey Rich,

 Silver tape looks good. Not sure how effective it will be, but any reduction in heat transfer from the engine bay into the air intake will be a plus. The cooler the air the better. What about the throttle body bypass to really lower the air temp travelling through your tb. emoticon

 Re the new air intake. Are you intending to use the lower fog light hole for a ram. I have seen this done on heaps of cars in the US and from all reports, it is very effective. Just be mindful of water ingress, but it looks a winner. You should ask Noel for what type of flexi hose he used for his lower air intake as it fitted perfectly.

 Good luck with the air intake mod.

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BRETT72 - X235

16/Jan/2008, 9:40 pm Link to this post Send Email PM   Send Private Message MSN
 
basshead Profile
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Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Re: Factory intake - addition of heatshield wrap & proposed intake modifications


So Noel has done a similar setup? I'll do a search tomorrow after work and see if I can find his setup.

I had a similar setup in my previous car using 5inch diameter flexible ducting. The foglight hole was about 3 times the size, but I cut out the blank/flat panels of the cover and put it back in again. I don't know if I'll do the same with the X-Trail as the hole is already considerably smaller, but it would probably look neater than having nothing there apart from the ducting poking through...


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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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BRETT72 Profile
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Date Registered: 10-2005
Location: Orange. NSW.
TOTAL POSTS: 1999
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Re: Factory intake - addition of heatshield wrap & proposed intake modifications


Yeah, if you check out Noels air intake system, he uses two intakes. One is via his Apexi charger that comes out near the factory location, but he also has a lower intake and he used flexi pipe to plumb this in to his system.
Just watch those puddles. emoticon

One question on your intake system, have you already removed the large lower resonator. Because if this has not been covered, it will be storing hot air and redirecting this air through your system. The tape will then prevent this hot air from escaping. The lower resonator is between the air filter and intake join and goes straight down via a Y. I have removed mine already, as I believe it disrupts the air flow. Just a thought.

Last edited by BRETT72, 16/Jan/2008, 10:12 pm


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BRETT72 - X235

16/Jan/2008, 10:08 pm Link to this post Send Email PM   Send Private Message MSN
 
basshead Profile
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Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Re: Factory intake - addition of heatshield wrap & proposed intake modifications


I found Noel's setup but I don't intend on usng two intakes. His lower intake is too low for my liking, due to much higher risk of water entry (although I suppose it would be very difficult for water to flow directly upwards, but a deep creek crossing might still pose problems without the hydrolock bypass/sensor).

My preference is to route the new duct between the headlight and the metal panel, and leave the large resonator in place, to act as a catcher for any water entering the intake. I don't think it would get too hot as it is mostly outside the engine bay. When I get a dual in/out temperature sensor (hopefully today) I will test that theory (possibly over the weekend).


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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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jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29100
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Re: Factory intake - addition of heat shield wrap & proposed intake modifications


Rich,

You need to keep in mind that any location lower than the factory intake position would require the bypass valve for safer driving.

Given that you're still off-roading, I would shelf this idea all together, as you will be introducing a risk to your exy you can do without, especially having the factory exhaust system set-up. The gains (if any) are not worth the risk and trouble you will be going through.

Your K&N filter and the current heat shield wrap are giving you the best results you can achieve without compromising your off-road drive-ability.

That's just my opinion.

---

17/Jan/2008, 7:06 am Link to this post Send Private Message MSN Blog
 
basshead Profile
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Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Re: Factory intake - addition of heatshield wrap & proposed intake modifications


Thanks Jalal.

I have already thought of this, and that is why I even more prefer the method in which only the top front section of factory ducting is removed, and retain the large resonator box.

The idea is that it only takes a few seconds (literally) to remove and replace the top front section of factory ducting, and the flexible stuff I intend to use can just easily squash out of the way when I put the factory one back in place in the case of a deep(er) creek crossing. The very few times I do creek crossings, I have already thrown the recovery gear into the car for the trip anyway, so the factory ducting will just be one more thing to pack emoticon


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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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Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: Factory intake - addition of heatshield wrap & proposed intake modifications


Not an option for us Ti guys with foglights fitted emoticon but then I don't have any big spotties blocking my grille airflow emoticon

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Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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Eggins Profile
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X-TRAIL ENTHUSIAST
 


Date Registered: 08-2004
Location: Brisbane
TOTAL POSTS: 184
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Re: Factory intake - addition of heatshield wrap & proposed intake modifications


Spotties in front of the grill shouldn't matter, there is such a big wall of pressurised air there while driving that it will have no trouble getting around the spotties.
If you found that spotties affected your temp, then there are other bigger problems to look for - like a blocked radiator for instance.

Something that will really help the XT's with extractors, is getting some of the heat proofing wrap that goes on exhausts. Wrap it right from the head really neatly all down the extractors as far as you can go. This achieves a few things:

* reduces the heat in the engine bay
* keeps exhaust gases hot - when they cool they shrink and slow down in the pipe therefore losing some of the "extraction" effect (extractors should be matched to the size of the exhaust ports in the head to help this)
* helps the efficiency of the catalytic converter

You may need a sump guard or bash plate to protect the wrap down the bottom of the extractors.



---
Shawn and Belinda Eggins
2003 STR, K&N, Strut brace, Ground wires, Dunlop LM702's, Tint, Mud flaps, Tow, Nudge, Spots, Mats, Rear scuff plate
http://eggins.synthasite.com/
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