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#Post#: 1005--------------------------------------------------
The Ultimate VWMS K-Jet Metering Head
By: daligh Date: October 17, 2013, 2:54 pm
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VWMS Pt Nr.: 027 133 471 SP
It flows 50% more air than the standard unit!
[URL=
HTML http://s899.photobucket.com/user/daved96/media/MeteringHeads002JMR_zps4da00704.jpg.html][IMG]http://i899.photobucket.com/albums/ac193/daved96/MeteringHeads002JMR_zps4da00704.jpg[/img][/URL]
[URL=
HTML http://s899.photobucket.com/user/daved96/media/PAGE5680-50JMR_zps57bf71e4.jpg.html][IMG]http://i899.photobucket.com/albums/ac193/daved96/PAGE5680-50JMR_zps57bf71e4.jpg[/img][/URL]
[URL=
HTML http://s899.photobucket.com/user/daved96/media/PAGE9JMR_zpsebbd2154.jpg.html][IMG]http://i899.photobucket.com/albums/ac193/daved96/PAGE9JMR_zpsebbd2154.jpg[/img][/URL]
#Post#: 1006--------------------------------------------------
Re: The Ultimate K-Jet Metering Head
By: mitlom Date: October 17, 2013, 3:19 pm
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From my experience while testing a couple of different air
metering heads back to back, it is not just the amount of air
the metering head will flow but more importantly, in my opinion,
the shape of the cone which controls the amount the flap opens
for a given airflow and hence the amount of fuel delivered. ;)
#Post#: 1007--------------------------------------------------
Re: The Ultimate K-Jet Metering Head
By: ces Date: October 17, 2013, 4:17 pm
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hi .
i try it one ,and it's pretty interessting how it's made.
the difference about a oe"black head" :
The first difference is that in manufacturing.
the head is aluminum, separate by a flexible sole (nitrile?)
then gives the slots on each injector output are increased.
and the last improvement is driven by vwms disk tray probe that
even under him, a curved drive to improve the air passage.
HTML http://nsa34.casimages.com/img/2013/10/17/mini_131017112123231456.jpg
HTML http://www.casimages.com/img.php?i=131017112123231456.jpg
#Post#: 1009--------------------------------------------------
Re: The Ultimate K-Jet Metering Head
By: daligh Date: October 18, 2013, 4:59 am
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[quote author=Tim Moll link=topic=147.msg1006#msg1006
date=1382041179]
From my experience while testing a couple of different air
metering heads back to back, it is not just the amount of air
the metering head will flow but more importantly, in my opinion,
the shape of the cone which controls the amount the flap opens
for a given airflow and hence the amount of fuel delivered. ;)
[/quote]
Hi Tim.
Have you published your findings? I would find them of academic
interest as there is no way I would consider changing the shape
of a cone in this as one assumes that the shape was developed to
suit the progression requirements for the VWMS Mk2 engines!
The K-Jet Manual has quite a good basic description of what the
cone does and of how its shape determines progression.
[URL=
HTML http://s899.photobucket.com/user/daved96/media/K-Jet18JMR_zps22d28c54.jpg.html][IMG]http://i899.photobucket.com/albums/ac193/daved96/K-Jet18JMR_zps22d28c54.jpg[/img][/URL]
[URL=
HTML http://s899.photobucket.com/user/daved96/media/K-Jet24JMR_zpsc182af45.jpg.html][IMG]http://i899.photobucket.com/albums/ac193/daved96/K-Jet24JMR_zpsc182af45.jpg[/img][/URL]
Herewith photo and dimensions:
[URL=
HTML http://s899.photobucket.com/user/daved96/media/boschamh2JMR_zpsf3f0e2e6.jpg.html][IMG]http://i899.photobucket.com/albums/ac193/daved96/boschamh2JMR_zpsf3f0e2e6.jpg[/img][/URL]
Note the extra step in the cone.
[URL=
HTML http://s899.photobucket.com/user/daved96/media/MHDIMS_zpsb68e449f.jpg.html][IMG]http://i899.photobucket.com/albums/ac193/daved96/MHDIMS_zpsb68e449f.jpg[/img][/URL]
Bosch Motorsport Part Numbers:
[URL=
HTML http://s899.photobucket.com/user/daved96/media/BOSCHFMHNRJMR_zps7a54b4ca.jpg.html][IMG]http://i899.photobucket.com/albums/ac193/daved96/BOSCHFMHNRJMR_zps7a54b4ca.jpg[/img][/URL]
[URL=
HTML http://s899.photobucket.com/user/daved96/media/BOSCHAFMJMR_zpsc76394d4.jpg.html][IMG]http://i899.photobucket.com/albums/ac193/daved96/BOSCHAFMJMR_zpsc76394d4.jpg[/img][/URL]
Regards,
Dave
#Post#: 1015--------------------------------------------------
Re: The Ultimate K-Jet Metering Head
By: mitlom Date: October 18, 2013, 5:27 pm
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Hi Dave,
I don't doubt that the VWMS item is without question the best
for a specific engine. I did some back to back comparing a
standard 1.8 8v air metering head vs. a 1.6 8v air metering head
as was fabled to have been used by the Slick 50 boys back in the
day. The base engine for this was a 1.9 8v running a Pack
C/Stage 3 head...I will dig out the comparative data and post it
over the weekend ;)
#Post#: 1017--------------------------------------------------
Re: The Ultimate K-Jet Metering Head
By: daligh Date: October 19, 2013, 2:32 am
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Thanks for that Tim, I'll try to change the title if I can?
So new to this type of forum I am having some difficulty working
all of the uttons as yet.
#Post#: 1100--------------------------------------------------
Re: The Ultimate VWMS K-Jet Metering Head
By: JMR Date: October 24, 2013, 7:06 pm
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Is the disc bigger Dave or the area's either side?
I tried a 1600 metering head on an 1800 slick 50 type spec
engine, but unlike Tim's I couldn't get it to work...swapping
back to the 1800 metering head gave a better result/richer
mixture...but like all tuning, what work's on one spec wont
always work on another.
As a side note, even with the warm up reg adjusted (16v unit on
an 8v) so the control pressure was backed right off to a couple
of bar, we still couldn't get the mixture ideally rich
enough....thank god for DCOE's!
ces....have you used a motorsport metering head?...any
comparison's available V's a std metering head?
#Post#: 1109--------------------------------------------------
Re: The Ultimate VWMS K-Jet Metering Head
By: daligh Date: October 25, 2013, 3:05 am
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The disc is the same size Jason.
I have not stripped the unit as yet, but I assume that the fuel
metering system has different size slots, etc., to give the
correct fuel ratio during progression and at full throttle when
the air metering can flow some 50% more air!?
As I am in no position at the moment to do anything meaningful
with the metering head would you like to borrow it?
You would have to pay for the courier, and they are uber
expensive in Eire!
Dave.
#Post#: 1111--------------------------------------------------
Re: The Ultimate VWMS K-Jet Metering Head
By: ces Date: October 25, 2013, 10:50 am
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hi jason .
I had the opportunity to try one, but it had been badly stored
and therefore a little butcher so hard to evaluate.
I try to adjust at best, and I know that the flow rates are
increasing and the progress of a flow is faster.
in the catalog of adjustment of the flow rates golf 2 16s (if I
remember correctly) are in the 255 ​​ml min.
and I get a 260 ml above with a good injector (volvo turbo,bmv
etc)
So according to the head can surely use following an engine
power enough elevate.
stole my experience
pity I did not keep the photo tray to show the form
#Post#: 2292--------------------------------------------------
Re: The Ultimate VWMS K-Jet Metering Head
By: Victerman Date: January 8, 2019, 10:06 pm
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Back to describe the details so easy to access in more clearly
anymore.
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