 Need HELP with Weber Carbs |
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| dcecc1968 |
 Jan 16 2016, 01:21 PM
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#1
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Member  Group: Members Posts: 251 Joined: 31-December 12 From: Concord, NC Member No.: 15,313 Region Association: South East States  |
I'm in the final stages of installation of dual 40 IDF carbs and something with the air filter assembly doesn't look right. After I put on the gasket and air filter assembly, there is space between the gasket edge and the top of the carb. The mating surfaces of the gasket appears to be fine, but I am concerned that when I put the air filter assembly on, I'll be screwing on the 4 nuts with no supporting surface below.
I purchased these carbs used and I can see that the air filter plate was warped a little due to the previous owner overtightening one screw. Is this the way the air filter assembly is supposed to work? Also, I'm missing the 4 nuts for the air filter assembly, are you guys using double nuts on each post or a lock washer and nut to ensure the nuts don't come off and into the intake.    |
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| tomrev |
Jan 16 2016, 01:36 PM
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#2
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Member Group: Members Posts: 231 Joined: 25-February 14 From: N. Mich. Member No.: 17,037 Region Association: None |
You have the wrong carb base for those carbs; the base needs to sit on the lower plane, as you have discovered. It's possible the base can be cut to slip over the inner, raised center section. Miss matched bits.
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| ThePaintedMan |
Jan 16 2016, 01:38 PM
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#3
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Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States 
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I believe with those particular air filters it should go ->
1) Carb 2) Carb top 3) Cork gasket 4) Air filter bottom plate 5) 4 Nylock nuts Nylock will prevent them from vibrating loose and ending up down in the engine. Edit: (IMG:style_emoticons/default/agree.gif) with what the posted above said, same idea. That very top adapter isn't necessary with these air cleaners. |
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| tomrev |
Jan 16 2016, 01:38 PM
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#4
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Member Group: Members Posts: 231 Joined: 25-February 14 From: N. Mich. Member No.: 17,037 Region Association: None |
QUOTE(tomrev @ Jan 16 2016, 11:36 AM)  You have the wrong carb base for those carbs; the base needs to sit on the lower plane, as you have discovered. It's possible the base can be cut to slip over the inner, raised center section. Miss matched bits. I ment to say "Filter base". |
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| stugray |
Jan 16 2016, 02:11 PM
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#5
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Advanced Member Group: Members Posts: 3,824 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
Did you try flipping the linkage bases from one carb to the other and turning them over?
That would put the flat side facing up where the filter base would sit on flat metal. |
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| dcecc1968 |
Jan 16 2016, 04:19 PM
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#6
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Member Group: Members Posts: 251 Joined: 31-December 12 From: Concord, NC Member No.: 15,313 Region Association: South East States |
So, if I understand correctly, I really don't need the plate (shown in red below)currently screwed onto the top of my carbs if I use the current air filter base?
I could just unscrew and remove the top plate and screw the air filter base on top. Or alternatively, I could try to flip the plate over on the other carb. Tom/Stu/George, thanks for your input.  |
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| SKL1 |
Jan 16 2016, 11:19 PM
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#7
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Senior Member Group: Members Posts: 1,602 Joined: 19-February 11 From: north Scottsdale Member No.: 12,732 Region Association: Upper MidWest
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Also, that looks like Redline linkage- I could never get that to work well- got the Tangerine linkage. Not cheap, but works great...
And yes, that top part doesn't look like my Webers but the air cleaner assembly looks the same. |
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| Old Yella |
Jan 16 2016, 11:39 PM
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#8
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Old Yella Group: Members Posts: 158 Joined: 2-July 13 From: Canberra Australia Member No.: 16,086 Region Association: Southwest Region |
The carb top is in fact a set of combined velocity stacks/air horns. You can take them off and buy a cheap set of new air horns to replace them or use those ones once you put the filter housing under them.
Some Examples:- with combined air horns and with individual horns. Attached image(s)       
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| r_towle |
Jan 17 2016, 12:55 AM
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#9
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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This is what you want to do.
Attached image(s) 
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| dcecc1968 |
Jan 17 2016, 04:20 PM
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#10
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Member Group: Members Posts: 251 Joined: 31-December 12 From: Concord, NC Member No.: 15,313 Region Association: South East States |
That is exactly what I needed to see. Thanks fellas for all your input.
-Don PS - Yes I've read all the threads about problems getting this linkage to work with carburetors, I'll give it a try and when I can't get it to work, I'll buy the Tangerine linkage... you can't beat the quality of Chris' products. |
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