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> Quieting Carbs, Carb air cleaners
KaptKaos
post Sep 18 2012, 04:43 PM
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Nominate for classic thread status. This is a common issue, with a very innovative solution.

Nice job!
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Gint
post Sep 18 2012, 05:39 PM
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Interesting. Hmmm....

Seems like you could fab up a couple of air boxes out of sheet aluminum or galvanized steel without too much trouble also.
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ClayPerrine
post Sep 18 2012, 05:45 PM
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I took the stock air cleaner off my six and put on K&N watershield air cleaners because I like the sound of the six stacks at full song.


Just got to listen to it too. My car is back up and running. (IMG:style_emoticons/default/driving.gif)

(IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/cheer.gif) (IMG:style_emoticons/default/mueba.gif) (IMG:style_emoticons/default/aktion035.gif)
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02loftsmoor
post Dec 27 2012, 01:28 PM
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nice out of the box thinking! a clean look
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Cap'n Krusty
post Dec 27 2012, 01:38 PM
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QUOTE(wobbletop @ Sep 18 2012, 10:15 AM) *

Anyone found anything for a -6?


Well, there's the one designed and installed by Porsche ..................

The Cap'n
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wobbletop
post Dec 29 2012, 07:41 PM
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QUOTE(Cap'n Krusty @ Dec 27 2012, 03:38 PM) *


Well, there's the one designed and installed by Porsche ..................

The Cap'n


I'm new to this stuff. I guess you're referring to the Zenith covers? Would a particular model fit a 3.0 with webers?
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Dave_Darling
post Dec 30 2012, 02:14 AM
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The triple Webers in the 914-6 used a single combined air cleaner. Almost the same as the one from the 1969 911T, which makes sense because the Six motor is almost identical to the 69 T motor.

I'm pretty sure that's what the Cap'n was referring to.

--DD
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Mark Henry
post Dec 30 2012, 07:42 AM
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I'm to believe any /6 carb airfilter assy. will fit but you might have to cut off the snorkel.
Is this correct?

Is the bolt pattern the same on both the zenith and weber carb tops?
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JamesM
post Dec 30 2012, 08:26 AM
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CB performance sells covers for use when turbocharging, why not just run them without the turbo? They have a bunch of different models including a low profile one for 356s that might fit under a rain tray. Looks like it would be easy to pipe the inlets whereever you want.


http://www.cbperformance.com/ProductDetail...oductCode=7313T
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euro911
post Dec 30 2012, 11:45 AM
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Interesting (IMG:style_emoticons/default/idea.gif)


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kgruen2
post May 1 2017, 12:59 AM
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QUOTE(ldsgeek @ Sep 18 2012, 03:20 PM) *

The GL1000 (shown by RonD), GL1100 and GL1200 should all have something similar. this is a great idea. For those who don't know the setup, this bolts to the top of the air plenum that connects the 4 carbs on these bikes. Any cycle salvage place (Coopers is in Franklin, NH near me) should have these available.


I know this is a very old thread, but...........In the case of the Honda Goldwing air boxes, does it matter which way the air intake horns are pointed, towards the front or the rear?
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porschetub
post May 1 2017, 02:23 AM
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No makes no difference,I like this idea for a 4 just makes sense,the sound is fun for a while....
I feel lucky to have a six with stock air cleaner ,hate to have to buy one they are getting a bit crazy pricewise.
Always like the Alfa setup for Dellorto's and Webers on the early carb cars no reason it won't work on a T4 without simple mods.
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michael7810
post May 18 2017, 03:07 PM
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QUOTE(RonD @ Sep 17 2012, 10:35 PM) *

For me the induction noise of carbs is too loud. So I went looking for a solution and I thought I would share what I found and trying. 1985 Honda 1200 Goldwing air cleaners.

They seem to be working great. Nice deep sound and quieter. The air horns on top are about 1"x 1 1/2" each. Combined they are bigger then 1 throat of the carb. I don't feel any reduction in power and idle seems about the same. Engine is a basic rebuilt 1.7 to 2.0L specs with carb cam and hydralic lifters.

Cheap too. shipping cost more than the air boxes themselves. A little fabrication of a mounting plate, but pretty much bolt on. Linkage clears.


I just finished with the same mod and couldn't be happier. Cost of the filter boxes off eBay was $24 each including shipping and I used 85 Gold Wing Aspencade 1200cc boxes. I've driven about 10 miles and did not notice any changes in A/F, idle speed or power. I did notice a HUGE reduction of intake noise and now I can hear the exhaust. The ultimate test is driving up an incline on the highway with the windows up which I will attempt sometime before WCR. Below are a few pictures of how it goes together...basically as RonD describes. And thanks to Keith914 who gave me his lessons learned.

Mounting plate made from 1/8" aluminum:

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Before installing the old K&N-type filter. You can't see it here but I had to grind off the ends of the chrome bottom plate to fit the GW air box opening.

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With filter cover installed...I had to weld in a longer 1/4-20 bolt for the wing nut and dimple the top of the chrome top to make it all fit properly:

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7TPorsh
post May 18 2017, 04:37 PM
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Congrats! I did this mod too and I met a fellow from Laguna Beach at the G&R Swap that had it as well.

This is an easy 80% reduction of intake noise and I highly recommend this mod to everyone.
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Elliot Cannon
post May 18 2017, 07:47 PM
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I like the noise my carbs make. Especially when I'm wearing these. (IMG:style_emoticons/default/biggrin.gif)


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Beach914
post May 18 2017, 08:07 PM
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QUOTE(7TPorsh @ May 18 2017, 03:37 PM) *

Congrats! I did this mod too and I met a fellow from Laguna Beach at the G&R Swap that had it as well.

This is an easy 80% reduction of intake noise and I highly recommend this mod to everyone.

That was probably Keith914. He made the same set up for his t4. But now he's doing his six project.
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lonewolfe
post May 18 2017, 08:26 PM
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QUOTE(euro911 @ Dec 30 2012, 10:45 AM) *

Interesting (IMG:style_emoticons/default/idea.gif)

Those CB Covers are made to go with an air box. Those covers have no filters inside. I've been thinking about gabbing an air box attached to the covers with silicon hoses.

There's a company in Germany with a similar setup as I've been working on. They are call CSP Performance. Their airbox kits start at 799.00 Euro's if I'm not mistaken but items a chunk of change for a plastic airbox, carb covers, silicon hoses and hardware.
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euro911
post May 29 2017, 12:17 AM
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QUOTE(lonewolfe @ May 18 2017, 07:26 PM) *
QUOTE(euro911 @ Dec 30 2012, 10:45 AM) *
Interesting (IMG:style_emoticons/default/idea.gif)
Those CB Covers are made to go with an air box. Those covers have no filters inside. I've been thinking about gabbing an air box attached to the covers with silicon hoses.

There's a company in Germany with a similar setup as I've been working on. They are call CSP Performance. Their airbox kits start at 799.00 Euro's if I'm not mistaken but items a chunk of change for a plastic airbox, carb covers, silicon hoses and hardware.
Yeah, I looked into those CB covers way back when, and still might go that route if I keep the 'BB' after finishing up the '71 (which has F.I.) (IMG:style_emoticons/default/confused24.gif)

It'll be project# 1,785 (IMG:style_emoticons/default/laugh.gif)
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