Author Topic: Weber carb set-up (Read 151882 times)

scottly · « **Reply #675 on:** October 31, 2015, 07:58:04 PM »

Frank, F11 and F16 seem to be the most common. Billy, Jerry, what size tubes do your carbs have? Jonnycakes is using F16s, IIRC.

Jerry Rxman Griffin aka MuthaF'er · « **Reply #676 on:** October 31, 2015, 10:07:11 PM »

#$%* Scott, what are 'tubes'? Let me know and I'll find out tomorrow. Seriously....

Tintop · « **Reply #677 on:** November 01, 2015, 04:17:52 AM »

It's the part between the air correctors and the main jets Jerry. Size is stamped at the main jet end.

scottly · « **Reply #678 on:** November 01, 2015, 07:56:16 AM »

Jerry, under the round cap with the wing-nut there are four brass screw-heads; the ones with the holes in the middle are the emulsion tube/main jet assemblies, and the others are the idle jets. In the second picture, the middle assembly from left to right is the emulsion tube holder, the air correction jet, the emulsion tube, and the main jet.

Jerry Rxman Griffin aka MuthaF'er · « **Reply #679 on:** November 01, 2015, 08:46:58 AM »

150's and 200's.

scottly · « **Reply #680 on:** November 01, 2015, 08:53:55 AM »

Those would be the air jets and mains (huge mains!). The tube itself has a number always with an F.

Jerry Rxman Griffin aka MuthaF'er · « **Reply #681 on:** November 01, 2015, 09:02:24 AM »

OK then, see what you are going to have to deal with! ;-)

F11

So now you have to tell me what these do.

754 · « **Reply #682 on:** November 01, 2015, 09:20:20 AM »

He cant yet , its a secret....you have to own them four years , before we let you in on it !
And you have to flash the polished brass W keychain.....ala the ZZ Top video..........! !

scottly · « **Reply #683 on:** November 01, 2015, 12:08:54 PM »

Jerry, what other parts are in your carbs? Chokes, auxiliaries, idle jets, and pump jets? I don't remember who you got these from, but with 150 mains I suspect it was Bear?

scottly · « **Reply #684 on:** November 01, 2015, 08:28:58 PM »

Jerry, take a closer look at the main jet size. Are you sure they aren't 130s?

Jerry Rxman Griffin aka MuthaF'er · « **Reply #685 on:** November 01, 2015, 08:33:30 PM »

I have not dissected them yet due to other things presently. Priorities. Been gone 1+ month and for most of the next 3 weeks. Plus I don't know #$%* about them yet.

Perhaps I can get into them tomorrow?

scottly · « **Reply #686 on:** November 01, 2015, 08:36:20 PM »

You got them from Johno, right? Didn't he include a bunch of spare parts?

Jerry Rxman Griffin aka MuthaF'er · « **Reply #687 on:** November 01, 2015, 08:37:35 PM »

Si

scottly · « **Reply #688 on:** November 01, 2015, 08:41:29 PM »

I had to dig back through the for-sale section quite a way before I figured it out.

He mentioned extra RC jetting, which may have included F16 tubes?

Jerry Rxman Griffin aka MuthaF'er · « **Reply #689 on:** November 01, 2015, 08:45:13 PM »

Scott, I'll have to do this tomorrow. Please ask any questions and I will do my best to answer with my limited knowledge of these.

scottly · « **Reply #690 on:** November 01, 2015, 08:54:35 PM »

The RC kits came with F16 tubes, while the MPD kits came with F11s. If you find a set of F16s in the extra parts, please send them to me so I can proceed with testing.

BTW, the chokes fitted were 31mm, with 32mm included as extras, per Johno's ad.

Jerry Rxman Griffin aka MuthaF'er · « **Reply #691 on:** November 01, 2015, 09:38:34 PM »

Didn't see extra tubes but I'll check. Gotta get the mock up completed first then disassemble and drop off stuff at the coater before leaving town on Thursday. Much to do since I'll have been away for 2+ months. Webers are on the back burner mostly for now.

mwasson · « **Reply #692 on:** November 03, 2015, 08:45:12 PM »

Send me your mailing address and I will order the F16s and have them sent to you today.

My email address is- mark.s.wasson@gmail.com

Jerry Rxman Griffin aka MuthaF'er · « **Reply #693 on:** November 03, 2015, 10:32:03 PM »

Quote from: scottly on November 01, 2015, 08:54:35 PM

The RC kits came with F16 tubes, while the MPD kits came with F11s. If you find a set of F16s in the extra parts, please send them to me so I can proceed with testing. BTW, the chokes fitted were 31mm, with 32mm included as extras, per Johno's ad.

I'll be damned! Those 150's are attached to F16's. Get your address to me asap as tomorrow is the ONLY day I have to get them out before 11/23. Want me to just leave the 150's on? Need anything else (like I know WTF I'm doing)?

scottly · « **Reply #694 on:** November 04, 2015, 09:44:53 AM »

The idle jets are at the bottom of the pic. If you run out of time, just leave the main and air jets in the tubes, as they can sometimes be a pain to remove.

Bill/BentON Racing · « **Reply #695 on:** November 04, 2015, 10:07:42 AM »

Greggo, here you go.

Greggo · « **Reply #696 on:** November 04, 2015, 04:38:27 PM »

Looks good Bill! Can't wait to open it up.

scottly · « **Reply #697 on:** November 06, 2015, 05:33:01 PM »

Tested the F16 emulsion tubes today (thanks Jerry

) compared against F11 tubes, with no other changes from the previous test: 30 chokes, 3.5 aux, 105 main, 185 air. The F16s leaned the motor over the entire range, but had a greater effect at the low and mid range than at the high end. The motor made more HP and torque from about 4250 to 6750 RPM, and was up 1.96 HP and 1.87 ft/lbs at 5500 with the F16s. From 6750 RPM up power is down, with a sharp drop-off in output starting at about 8100, even though the A/F is fairly level, albeit very lean.
Next test will be with 4.5 aux, with no other changes.

BPellerine · « **Reply #698 on:** November 06, 2015, 07:43:40 PM »

very good info scottly,nice to know the effect of some of these "mystery" components have .billp

Jerry Rxman Griffin aka MuthaF'er · « **Reply #699 on:** November 06, 2015, 10:14:34 PM »

1 size up on mains?

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Author Topic: Weber carb set-up (Read 151882 times)