The Fast Idle Screw on my car's BBS has come loose and is now resting comfortably somewhere alongside I 95. Same carb that lost it's Pump Arm Screw six months ago (thanks, Charrlie). I guess I need me some loc-tite.

I'm looking for a replacement, of course, and found this one for a BBD. So my question is, does anyone know if this one, which looks correct, will also fit a BBS?

Note that this is the screw that secures the Fast Idle Cam; it is not the fast idle adjustment screw. It is #5 on this diagram.

Thanks,

Richard

Main reason you had lost these items is missing the springs. This is the key item that prevents these screws to undo themselves and get lost.

Cheers, Wizard

What springs are you referring to?

Locktite or a star washer under the screw.


Richard

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Part of Tyrde-Browne Racing

The short springs under the idle & fast idle screws.
DD

It wasn't the adjustment screws that were lost, it was the special machined screw that attaches the cam. See part #5 below. The previous one I lost was #11.

I ordered the one in the ebay link above so I will be able to answer my own question in a day or two. Meanwhile I was able to rig something with an M6 screw, a pair of washers and some heat shrink tubing
Worked fine during the commute today, but I will be relieved to get the right one on there.

Well the short answer for anyone who might need this in the future is that the screw from the BBD does not fit the BBS carb.

Not only is the screw thread different, but it has a flat head and not the cylindrical head that the BBS screw has. It is the head of this screw that stops the travel of the idle adjustment screw.

If anyone has an old BBS core that they'd like to sell, please PM me. I will also post on that part of the forum.

Alternatively, this might be a good time to either switch back to a Holley 1945 or a 1920 if I can find a good one. Any suggestions on this would be welcome.

Richard

I received replacement mixture screws for my BBD from Daytona Carburetors.I may not be correct on the name but they were recommended by SLANT SIX DAN. I recommend you contact them They have millions of parts and are willing to help. I am at work right now so I do not have Access to the contact info. they helped me and are #1 in my book

Thanks for the lead; I'll check with them.

If you cant find them anywhere else shoot me a PM and I'll send you both of those, if you pay the shipping. I've got still got my old BBS around here somewhere. Its a piece of junk (super warped body, holley reman) but it has those screws in usable condition. Or if you are lucky SlantSixDan might post a great source of these parts.

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'66 Dodge Dart

Even with the spring my screws back out. A little wipe of RTV cures it. These things are old and the screw wiggles open the threads in the hole.

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto Dually Clubcab needs a injector pump
2005 Golden Couch Buick

Thanks Josh; PM sent.

I did try Daytona Parts but they couldn't help.

R. Wood

Josh, yuda man! Received today and installed it before total darkness set in; all is well. I put some Loctite blue on the threads so hopefully there won't be an encore performance.

Thanks,

Richard

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Glad it all worked out for you, happy to help.

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'66 Dodge Dart