M110 Weber - air filter swap.

Post by **zohar** » Sun 19 Mar, 2017 8:27 pm

Hello
I own the above mentioned combo.

The air filter as you can see in the picture is a monster and hides away the lovely looking German lump.

I would like to swap it for either a much smaller unit or use a snorkel adapter with the capsule filter near the from of the engine bay.

Has anyone attempted this ?
What about the hose the goes from the valve cover to the air filter ? What can I do with that ?

Appreciate your help

Zohar

Post by **zohar** » Sun 19 Mar, 2017 10:31 pm

Post by **zohar** » Sat 22 Apr, 2017 11:01 pm

Done and Done.
Much better.

Post by **merc-304** » Sun 23 Apr, 2017 9:59 am

Nice neat look...hows the intake suction noise ..is it very much louder on accelaration ?

Post by **zohar** » Sun 23 Apr, 2017 1:13 pm

A bit louder but not unpleasant at all. Most of the noise at the moment is from worn bearings on fan , compressor and pulleys all of which are being replaced. Oh and due to worn bearings the fan is fouling on the compressor. Next week I hope I can hear the actual air sucking ...

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Post by **gazman** » Sun 23 Apr, 2017 1:40 pm

Look's better but much smaller. I would recommend cleaning often and if your engine breathes a lot maybe reroute breather tube into a catch can.

Post by **zohar** » Sun 23 Apr, 2017 3:02 pm

Thanks gazman.
Interestingly in kjet form the air filter on the M110 is much smaller than the carb version I had.
An added benefit is that these Weber filters are much cheaper and simpler than the original.

That tube is supplying clean air to the engine head not venting oily fumes so not sure why a catch can would work?

Post by **zohar** » Sun 23 Apr, 2017 3:36 pm

Well I initially assumed this was a PCV style arrangement allowing oily fumes to re enter the combustion chamber. Reading online the view seems to be the flow is from filter to head. The new pipe is translucent and has no sign of oil. I'm happy to be corrected if that is wrong.

Post by **zohar** » Sun 23 Apr, 2017 3:53 pm

Can't see anything in the original Mercedes filter arrangement that would filter out oil droplets and prevent the engine smoking when burning them? Am I missing something?

Post by **zohar** » Sun 23 Apr, 2017 5:20 pm

This is what I read : http://www.benzworld.org/forums/attachm ... 1253649376

Post by **CraigB** » Sun 23 Apr, 2017 6:50 pm

I can't see if it is a K&N filter but if so they flow really well and even when a bit dirty. A mate has a lotus 7 and fitted these little K&N caps on the trumpets of the dcoe webber and had it dynoed with them off and on in the same sitting - no measurable difference so for that small an area pulling max revs, my guess is you will be pretty right.

Post by **zohar** » Sun 23 Apr, 2017 7:09 pm

I recommend watching the mighty car mods episode where they examine the cold air intake and pod filters using a Dyno. Very educational.

Post by **Bartman4800** » Mon 24 Apr, 2017 10:00 am

zohar wrote:I recommend watching the mighty car mods episode where they examine the cold air intake and pod filters using a Dyno. Very educational.

If you read it well, you might conclude that your filter setup is far from ideal. You created yourself a "hot air intake"

I had the same filter on my Subaru Brumby, for the sole reason that the original filter box did not fit under the hood anymore. But the original setup was superior.

On very hot days, your engine might stall because it sucks in very hot air.

Bart

Post by **zohar** » Mon 24 Apr, 2017 10:09 am

Thanks Bart.
By "read it well" do you mean the attached doc ? What innit would suggest a problem with hot air ?

How is the air any hotter in this setup compared to stock?

Post by **Bartman4800** » Mon 24 Apr, 2017 10:39 am

Because the stock airfilter has a large snorkel that takes air besides the radiator, where it is considerably cooler.
Maybe the hose on yours was already missing.

http://s251.photobucket.com/user/tamar0 ... 1230133929

Bart

Post by **zohar** » Mon 24 Apr, 2017 10:41 am

Oh I see. Mine did not have that when I bought the car. Probably missing from many M110 carbi cars judging by online photos.

Post by **CraigB** » Mon 24 Apr, 2017 12:22 pm

I guess see how it goes. My carby M110 converted to gas had a bigger but similar placed filter taking air from the top. It was a Falcon element between plates and thin enough to fit it all under the bonnet. I had underheating (gas works better at higher temps) rather than overheating and ran the whole time without an engine fan. On hot summer days in traffic the a/c fan was enough to keep things cool. If i could have got a higher temp thermostat that fitted that would have been a better option, but it does serve as a good example of how this may not be the same problem it was on the Subaru. The principal of cold air being denser and therefore more sucked in for a bigger bang is unquestionable, but anyone who rode in that manual trans car with free (but not loud) exhaust of mine, including those familiar with W116's, was always impressed with the power. I also sprinted it at Mallala and had very good times for such a heavy old girl. But if I was looking for more then no doubt it would have been better if i had designed and fitted some sort of cold air intake. I'm just not sure how much more it would have been for all the effort and as a daily it all worked just fine.