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Generation 4-3 Pajero NW model 2011 - 2014

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  #1  
Old 12-10-17
JoeMcDermott JoeMcDermott is offline
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Default Bushskinz Intercooler Issue?

I fitted the Bushskinz underbody armour and was happy with the ease of fitting, the look and the protection it gives.

But…………………………………….

I have found that, in hot weather, the performance is reduced and the fuel consumption increased when compared to the same conditions with the OE tin foil protection for the intercooler.
I am assuming that it is because the airflow over the intercooler is much reduced when compared to stock, but I am not 100% sure.

Has anyone else found this effect?

Has anyone done anything to correct it? That might be drilling more holes through the plate (but this will reduce its strength) or upgrading the intercooler? I have a winch fitted to the bullbar so that second option might be difficult.
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  #2  
Old 12-10-17
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Quote:
Originally Posted by JoeMcDermott View Post
I fitted the Bushskinz underbody armour and was happy with the ease of fitting, the look and the protection it gives.

But…………………………………….

I have found that, in hot weather, the performance is reduced and the fuel consumption increased when compared to the same conditions with the OE tin foil protection for the intercooler.
I am assuming that it is because the airflow over the intercooler is much reduced when compared to stock, but I am not 100% sure.

Has anyone else found this effect?

Has anyone done anything to correct it? That might be drilling more holes through the plate (but this will reduce its strength) or upgrading the intercooler? I have a winch fitted to the bullbar so that second option might be difficult.
Yes, I found I was disappointed with the reduction in intake temperature achieved with the Bushskinz in place (which came with my NT when I bought it). So, when I found myself with much time on my hands, I drilled 128 extra 3/8" holes in my plate.

When the intercooler is clean, travelling at 100km/h showing around 8psi boost, my intake reports 18 degrees above ambient. Higher boost (i.e. headwind) the temperature differential would increase.

When the intercooler is dirty (most of the time) the intake reports 22 - 23 degrees above ambient.

Yes, the extra holes have reduced the strength of the plate. Will that reduction in strength ever make any material difference?
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  #3  
Old 12-10-17
erad erad is offline
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I too have noted awhat I think is a change in air intake temperatures with the Bushskinz intercooler guard fitted. At times, on a long steep mountain climb towing my 16.5 ft poptop caravan, I see over 120 Deg C, and I don't really like it. The cooling water temperature is OK - i think 96 Deg C was the maximum I have seen (I have a Scangauge II monitoring the Boost, Voltage and the air and CW temps).

I have looked at the possibility of drilling more holes in the plate, but I am concerned about weakening the plate. I demolished a wombat at 100 km/h, and the plate showed some wombat fur, but nothing else - no damage. I am thinking of opening up the airflow a bit, bu strengthening the plate with a bit of angle iron welded to the inside to stiffen it up where I remove some metal. This is one of the GUNNADO jobs. When I do it, I'll take some photos and try to post them up for others to see/comment.

I will also look into maybe installing a fan eg a 12V computer fan behind the gecko to see if that boosts the airflow. Again, a GUNNADO job. I have had the Bushskinz guard fitted for over 4 years and the other day my wife saw it and commented on the gecko design. Not very observant...

I haven't noticed any significant increase in fuel consumption with the Bushskinz guard fitted - only the inlet air temperature worry me at times.
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Old 12-10-17
twisted32 twisted32 is offline
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Yes this was always a concern for me when I could easily crack 100deg intake temps when not pushing the engine that hard up long climbs (ie 3rd gear locked at 70km with car only weighing around 2.6t at the time). My solution was a front mount intercooler (by Jonny Tigg). Sure keeps the intake temps down (and moves the core to a less vulnerable position), but also put a lot of heat into the radiator charge air. Still working on that one.
I think the Bushskinz plate would be much better if all of the vents were cut vertically (as opposed to horizontal) as there is no clear air path when fitted due to the angle of the bash plate.
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Old 12-10-17
06PAJ 06PAJ is offline
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4mm steel let alone stainless wont dissipate heat anywhere near as well as the MMA ally plates either

If its that big an issue could go front mount
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Old 12-10-17
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The PB/PC Challenger suffers a similar problem but not as bad. I have modified my Bushskinz intercooler plate and have seen an improve my inlet temps.
https://www2.pajeroclub.com.au/forum...ad.php?t=50101

I have looked at the Pajero's setup and discussed this with Twisted 32 at length, and have been thinking of options. I have an experimental mod to do on Paj 12's NW before we go away next weekend so if we get this done then we can monitor inlet temps both on and offroad and see if it is successful.

OJ.
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Old 12-10-17
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Quote:
Originally Posted by old Jack View Post
The PB/PC Challenger suffers a similar problem but not as bad. I have modified my Bushskinz intercooler plate and have seen an improve my inlet temps.
https://www2.pajeroclub.com.au/forum...ad.php?t=50101

I have looked at the Pajero's setup and discussed this with Twisted 32 at length, and have been thinking of options. I have an experimental mod to do on Paj 12's NW before we go away next weekend so if we get this done then we can monitor inlet temps both on and offroad and see if it is successful.

OJ.
I look forward to your findings Jack. The drilling of extra holes was going to be a Xmas project once I am at mates workshop. Not an ideal fix so would be interested to see if you come forward with any suggestions. I read about you remedying your Challenger some time ago. Hopefully a fix for the Paj will be found.
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Old 12-10-17
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Also following with interest
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MY14 NW GLX-R 3.2L Auto Build Thread
Fitted: Mickey T STZs. Ultimate Suspension HD Front EHD + bags rear. MM Towbar. OL Premium Post Bullbar. SPV EGR Mod. Bushskinz Bash Plates x4. Roleys Rear Bar Protector. Icom IC-400Pro. Rhino Pioneer Tradie Rack. CTEK CTD250S w/ Dual Bats. Airtec Snorkel. Scangauge II. Blackvue Dash Cam. TC mod. Autosafe Half Barrier. Masten TPMS. Drifta Custom Drawers w/ Mounted Compressor. 47L ARB Fridge. Warn XD9000 Winch. Towing an MDC stepthrough.
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Old 13-10-17
Lazarus Lazarus is online now
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x1
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  #10  
Old 13-10-17
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Noted the same issue when mine went on after first 6 months of ownership. Ended up resolving this & other issues by installing an HPD front mount intercooler https://www2.pajeroclub.com.au/forum...1&postcount=37.

So far so good in regards to dropping inlet temp and not adding to radiator heat load, will see how we go for summer trips.
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Last edited by Scouter1; 13-10-17 at 07:20 AM. Reason: Typo
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