| [ Total Views: 724 | Total Replies: 15 | Thread Id: 4371 ] |
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 teamfaulkner
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| posted on March 13th, 2003 at 05:38 AM |
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Air intake modification - useful?
Now that I've bought a bus, I'm amazed at how many I see around my suburb (northcote melb) - there must be six just in a couple of square
blocks.
One of them has an interesting modification to the air intake (pictured) - It's made from cut and curved aluminum, relatively thick, with very
nicely carved wedges that allow it to fit into the grill very tightly - there's no way of telling, however, what holds it in place. There is one
on either side (it's a post-72 camper).
Any views on the utility of this?
Peter
[Edited on 12-3-03 by teamfaulkner]
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Team Faulkner
"In the battle of style verus substance, our side is winning"
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Robo
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| posted on March 13th, 2003 at 06:26 AM |
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You can get fibreglass ones from Vintage V dubs in Sydney, 02 9789 1777 you just pop rivit them on. gets a bit more cooling air into the engine
bay!
Robo
Boxer Power
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kombikim
A.k.a.: Kim
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| posted on March 13th, 2003 at 07:18 AM |
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I just fitted mine in time to go down to Bulli & scoop in all the rain, they make a really big difference to the temp of the motor, keep the whole
engine bay cool, not letting any hot air rise, got them from Alex Brown in Toowoomba ONLY $35 a pair
& $8.00 postage (thanks for the lead Marcel)email him at kimbest1@bigpond.com
but I don't think the scoops for the later type vents will fit the earlier type, you could ask Alex if he also makes the early type
[Edited on 12-3-2003 by kombikim] |
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70AutoStik
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| posted on March 13th, 2003 at 08:21 PM |
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Yep, they really do work. I made some out of fibreglass for my Kombi and they made a huge improvement. The extra air they provide allows the engine
to draw cool air through the carb, instead of heated by the engine. They produce the most effect on long drives, of course.
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silver
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| posted on March 13th, 2003 at 08:36 PM |
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I DISAGRREE
I disagree with these scoops... firstly when the new opening is measured it is a decrease in the surface area of the vent. that cant be good. secondly
the fan draws all the air it needs for engine cooling it cant blow any more. thirdly when on the highway the standard scoop on these vents is enough
to ram more air in and finally a team of engineers /experts (the same ones who designed the very vehicle you love everything about) are to be trusted
more than a guy with some tinsnips and or a penchant for sniifing fibreglass fumes . do the sums yourselves dont believe the guys trying to sell you
something.....
Keeping it real !
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Mr Hoodjacks
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| posted on March 13th, 2003 at 09:33 PM |
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Hoodjacks for Kombis!
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68AutoBug
A.k.a.: Lee Noonan
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 posted on March 13th, 2003 at 10:08 PM |
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You can't scoop in too much AIR....!! IMHO!!
[size=4]I would put them on... the original air scoop!! was designed to look good and let air in, but I believe You can't get TOO Much Air into a
VW's engine bay whether it be a type 1 or 2 .... When the Air Temp is around 35 degrees Celcius I believe the Air Cooled engines need all the
air they can get -- FORCED into the engine bay.... IMHO it MUST make a difference...and if it doesn't , well I'll still sleep better
knowing that I am Capturing MORE air than the original design....[/size]
:thumb:thumb:o:bounce:bounce:bounce
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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70AutoStik
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| posted on March 14th, 2003 at 12:14 AM |
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Actually, Silver, I just noticed it's a post-72 with the larger vents and built-in scoops. Obviously, the engineers did recognise the need for
more air and copied the aftermarket offerings of the time... As I recall, additional scoops were also available from VW in the mid-70's,
marketed for long-distance travelers. Any additional cooling with today's fuel can't be a bad thing (of course, they will cause a little
more drag, but anything that will help stabilise a Kombi at speed has to add up to a good thing.)
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Robo
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| posted on March 14th, 2003 at 06:30 AM |
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I had them on mine, and they definately made a difference, I just sold the ones I had because one was modified for the precleaner that I had for the
Donaldson I just sold, now I have to get some new ones.
Rob........
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bullyboy
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| posted on March 14th, 2003 at 07:11 AM |
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I used to run these and I can honestly say the made no difference to the engine temperature for high-speed driving (which is when you'd think
they would make the most difference)
I made mine for a split and they were BIG - i.e. lots of air got pumped in the engine bay.
If your engine bay is well sealed, the only place air comes in from is the top vents, and that air gets pumped out - it is not re-circulated. If your
engine bay is not well sealed they might make a difference as the fan would suck air in from around the hot engine/tranny.
Cheers,
BB
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SKEWtYpe3
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| posted on March 14th, 2003 at 02:27 PM |
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if they lasted thins long without scoops why do they need them now
keep the engine tinware rubbers in good nic and all should be good!
:bounce
they started makng the scoops bigger as the engine size and weight increased.
[Edited on 14-3-2003 by SKEWtYpe3]
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amazer
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| posted on March 15th, 2003 at 03:18 AM |
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but the just look ugly and bodgy. All these kombi campers that have been running around for 30 years mostly without the elephant ears have got to say
they arent needed.
Chris.... kombi pilot, oval dreamer... finisher #26971 2005 city to surf
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KruizinKombi
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| posted on March 15th, 2003 at 11:42 PM |
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silver, there's more to it than just the area of the opening; the scoop effect of the elephant ears increases the pressure with which air is
forced into the vents, rather than allowing the backpressure to deflect the air away from the vents.
Kruizin Kol
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The_Bronze.
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| posted on March 16th, 2003 at 12:40 AM |
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I was just going to add what Colin said.
I agree that keeping the tin rubbers intact would be the best option but can also see that the physics of the ears can only benifit provided a
suitable speed was maintained. An opening 90 degrees to the direction of flow would capture more air in total duration that an opening 180 degrees to
the direction of flow. The latter would be competing against the backdraft as Colin added and whould also have to rely on the draw of the fan to bring
the air in. Admiditly, yes some air would be forced in but not as much as with the ears attached.
A Kombi my Ex used to have would get very hot in the rear because of the heat transfer from the bay into the cabin - even throught the carpet and felt
and access hatch. Surprisingly it was actually cooler at 80kph than 100kph not only because of the engine load but also the diflection of air by the
front of the bus. Dont believe me - Blu tack or tape some plastic ribbons onto the outside of your bus and have a look at the cruve of the ribbon and
where the tail stops at different speeds. An interesting way to kill time on long trips.
[size=4]Bronze.[/size]
Rathmines, Lake Macquarie, NSW.
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Robo
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| posted on March 16th, 2003 at 06:11 AM |
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HiYA Bronz
I think you may be onto something there! I have a camper that used to be a panel van, the windows that I have in it are not factory and sit proud
of the body work about 2/3 an inch, I have often wondered if they interfeared with the airflow into the intakes, because when I attached the extra
scoops it did run cooler!
Rob.......
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kombikim
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| posted on March 16th, 2003 at 09:02 AM |
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They are ugly,but they do work, just before I fitted them I did 60 ks at 100kph, watched the oil temp & felt every HOT thing in the engine bay-
fitted them & did the same trip & saw the oil temp nearly 10 degrees less & felt every WARM thing in the engine bay. of course the car
doesn't HAVE to have them, or the oil temp guage but it sure makes me feel better for the long term. |
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azz
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| posted on March 16th, 2003 at 03:28 PM |
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You are probably all aware of my temp concerns from a previous thread...
I got them and THEY WORK!!
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KruizinKombi
A.k.a.: Col
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| posted on March 17th, 2003 at 07:32 PM |
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I wouldn't say that they're too ugly. Even my workmate who shares an interest in my kombi didn't realise that I'd fitted the
elephant ears until he'd spent a few minutes looking for the unspecified change. He eventually found them and commented on how well the fit in.
Of course, they were supplied in white, and my kombi just happens to be the same colour. I think the pop rivets probably gave them away.
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Kruizin Kol
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KruizinKombi
A.k.a.: Col
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| posted on March 17th, 2003 at 07:35 PM |
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Sorry, I couldn't find a clearer pic from the rear quarter...
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Kruizin Kol
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KruizinKombi
A.k.a.: Col
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| posted on March 17th, 2003 at 07:35 PM |
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Damn, it came out even worse than I expected! 
Kruizin Kol
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