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Old October 12th, 2023, 04:17 PM   #321
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Good to see some of the old basic methods of removing frozen screws are being used...
these new guys would have tried to weld a nut to it ! HAHAHHAH
done right the easy out is by far the easiest method but it does require a straight hole...
and being a pilot jet the hole was already there you just had to enlarge it a bit...so the easy out would fit and start....
.... I've broken all of my small easyouts over the last 50 years so I would have to buy a complete set if I ran into that problem..... or just send it to you LOL
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Old October 13th, 2023, 02:46 PM   #322
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MOTM - Nov '18, Mar '17
happened on the pilot adjust screw, not the pilot jet. Frozen solid, started with a tiny hole, increased bit size till I achieved proper size listed on the #2 EZ out,
still a tricky removal process.
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Old October 13th, 2023, 05:20 PM   #323
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yah ! I bet it was....one slip and you destroy the carb...glad it was you and not me ! HAHAHAHAHHA ( I'ed be pricing a used carb if it was me !)
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Old October 15th, 2023, 10:34 AM   #324
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MOTM - Nov '18, Mar '17
the VTX1300 carb is completed, with the exception of a new bowl "gasket" which i await delivery on.

Complicated Keihin single carb designed with both an accelerator pump and a decel valve. I've disassembled both and cleaned all their passageways along with the same old pilot, main circuits (which were previously clogged solid)

These should be fine runners once reinstalled.
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Old October 17th, 2023, 05:32 PM   #325
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MOTM - Nov '18, Mar '17
an especially nasty set of EX500 carbs in house currently. Float valves frozen in place within their seats, black gook all over. Wow. Pics'll follow as i progress.
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Old October 20th, 2023, 06:57 PM   #326
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some progress, though not completed as yet
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Old October 23rd, 2023, 11:58 AM   #327
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MOTM - Nov '18, Mar '17
and they are finally ......done. Both wet and air tested perfect, no leaks internal or external. Synched, estimated idle speed. Ready to go back home now.

Photo as received and completed.
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File Type: jpg eb5.jpg (111.1 KB, 2 views)
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Old November 9th, 2023, 03:30 PM   #328
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Quote:
Originally Posted by ducatiman View Post
the VTX1300 carb is completed, with the exception of a new bowl "gasket" which i await delivery on.

Complicated Keihin single carb designed with both an accelerator pump and a decel valve. I've disassembled both and cleaned all their passageways along with the same old pilot, main circuits (which were previously clogged solid)

These should be fine runners once reinstalled.
the owner just called, whoever did the install missed attaching the vac hose onto the petcock.....once corrected the 1300 runs SUPERB!
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Old November 16th, 2023, 04:30 PM   #329
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MOTM - Nov '18, Mar '17
been busy preparing my #113 EX500 carbset (my property based on trade-ins)

Actually removed a tiny pilot screw tip, broken off and solidly blocking its port. I'll post a pic when I can. These are a tough refurb, the pilot jet port on the other carb is solidly blocked, currently in ultrasonic, hopefully will clear it.

And, in the meantime, the electric motor has overheated/seized on my 12-15 year old shop vac. As its NLA to buy/replace as new...had no choice but to buy a new shop vac this morning, an integral supporting device used within my services.
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Old November 16th, 2023, 04:53 PM   #330
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What is it with shop vac's ? I've gone through 4 of them in my time so far
my latest is a Haart 3.5 gal for cleaning my pellet stove, so far so good
but all the rest the bearings in the motors went out.... it's like they were ALL put together with no grease on the bearings !
I am tempted to pull the one I have apart right now and grease it real good !
they all worked great for a short period of time...then promptly died as the bearing would ware out and allow the motor to wobble
once they start going into that wobble mode they can't get the RPM and are useless.......
I suggest you pull your brand new Shop vac apart and lube the bearings !
they should be tiny ball bearings but even those need lubed !
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Old November 17th, 2023, 06:56 PM   #331
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MOTM - Nov '18, Mar '17
on my shop vac the motors' commutator windings were badly burnt.

Carbset #113 (though for EX500) will be released tomorrow, I believe.
Perfectly passed a wet test this afternoon, levels right on the money, no leaks internal or external.

Edited to add: totally finished #113 today, currently listed FS on the EX-500 website.
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Old November 19th, 2023, 04:38 PM   #332
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MOTM - Nov '18, Mar '17
today, near finished a 250 set, wet test followed by final assembly to commence tomorrow. I'll post a pic or 2 then.
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Old November 20th, 2023, 01:25 PM   #333
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MOTM - Nov '18, Mar '17
done, back in the mail already. Findings included swapped jet needles (as they are '09 L/R placement is critical), totally clogged mains/pilots and also 1 choke circuit clogged solid. All cleared/corrected now, should be bolt-on runners. I'll await owners report.
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File Type: jpg BL5.jpg (110.4 KB, 7 views)
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Old January 17th, 2024, 01:44 PM   #334
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Currently have a pair of Stromberg carbs off of a 1947 American LaFrance brand firetruck which uses a 12 cylinder engine. Work commencing in my inside cellar/shop (brutally cold outside)

After extensive research, 2 carb/gasket kits ordered today at $67 each, some disassembly reveals carbs using 3 sections. Different fo' sure....pic on right side is 1 partially disassembled carb.
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File Type: jpg strom1.jpg (215.7 KB, 1 views)
File Type: jpg strom2.jpg (92.2 KB, 2 views)
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Old January 27th, 2024, 11:46 AM   #335
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a pic of the finished carbs installed AND a photo of the actual firetruck they are in. My ex-coworker advises its running fine!
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Old January 30th, 2024, 01:35 PM   #336
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And currently I'm back to a set of more familiar, little ole 2 fitties.
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Old January 31st, 2024, 02:24 PM   #337
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MOTM - Nov '18, Mar '17
pic of 1 carb, near completion
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Old January 31st, 2024, 04:51 PM   #338
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MOTM - Nov '18, Mar '17
carb #2 completed......both have been reconnected (pic taken prior)

Floats have been re-adjusted (fuel levels found to be way too high)

Wet testing to commence in the morning.
Attached Images
File Type: jpg ea2.jpg (79.3 KB, 0 views)
File Type: jpg ea3.jpg (56.2 KB, 0 views)
File Type: jpg ea4.jpg (88.3 KB, 0 views)
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Old January 31st, 2024, 08:06 PM   #339
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nice work Professor !
float level too high will definitely cause problems !
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Old February 24th, 2024, 10:38 AM   #340
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MOTM - Nov '18, Mar '17
Ducati/Mikuni's recently completed, a far cry from "as received"
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Old February 26th, 2024, 10:01 AM   #341
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MOTM - Nov '18, Mar '17
now prepping these "trade ins" 250's, will document progress here, should be ready to go within a couple days.
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Old February 26th, 2024, 04:18 PM   #342
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MOTM - Nov '18, Mar '17
set has been split, totally disassembled, certain cleaning procedures completed.

pics, before and after

A lot accomplished today, more tomorrow.
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File Type: jpg IMG_9033.jpg (75.3 KB, 8 views)
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Old February 27th, 2024, 12:22 PM   #343
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Iíll submit these and proclaim Iím now done
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File Type: jpg IMG_9037.jpg (83.9 KB, 1 views)
File Type: jpg IMG_9036.jpg (106.6 KB, 3 views)
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Old February 27th, 2024, 01:40 PM   #344
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They look great as usual, Gordon!
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Old February 27th, 2024, 02:03 PM   #345
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awesome
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Old February 27th, 2024, 02:46 PM   #346
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thank you, both
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Old March 1st, 2024, 01:22 PM   #347
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MOTM - Nov '18, Mar '17
this carbset, recently refurbed has been accused of leakage....I can't replicate/duplicate ANY leakage whatsoever....I've contacted the owner. Currently on a protracted, very long "wet test", a pic'll follow.
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Old March 1st, 2024, 04:09 PM   #348
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thats odd usually all you have to do to get them to leak again is just put gas in them when they leak.... maybe their being used at a funny angle
like the bike is on a rear wheel stand and it's ass is real high in the air...
or maybe it is the front wheel being held too high.
....
that's a real pickle buddy can't have leaking carbs but if you can't get them to leak again just double check the float level and send them back !
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Old March 5th, 2024, 02:45 PM   #349
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MOTM - Nov '18, Mar '17
currently on a set of EX500 carbs. Found 1 clogged pilot jet, dirty float valve seats, worn valves. Owner reports fuel in oil. Also 2 oversized Mikuni main jets installed in Keihin carbs!

Lets see how it goes, more tomorrow.
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Old March 5th, 2024, 06:50 PM   #350
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makes you wonder how it even ran with oversized mains in it and the other problems !
been my experience that even one step over on the mains makes them so boggy you have to take them back out just to be rideable.... LOL
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Old March 6th, 2024, 12:34 PM   #351
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MOTM - Nov '18, Mar '17
a comparative chart reveals 130 Mikuni jets are equal to 150 Keihins. Stock Keihin supplied was, in fact 130. WAY oversized!

The float valves were adjusted to provide a lower fuel level...I wonder why?

All will be corrected, I'm anxious to hear how it runs/responds after corrections.
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Old March 6th, 2024, 05:59 PM   #352
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yes you might add a word of caution when he first throttles up he might kill himself ! LOL ..... it's strange how forgiving a I.C. engine can be at times,
it may not run good but it still runs.... getting it to run RIGHT is always a major triumph !!!!!
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Old March 7th, 2024, 11:28 AM   #353
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MOTM - Nov '18, Mar '17
some photos of EX500 carbset I'm doing currently. To be shipped back to owner tomorrow.
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File Type: jpg trev4.jpg (80.6 KB, 5 views)
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Old March 14th, 2024, 12:45 PM   #354
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MOTM - Nov '18, Mar '17
I've been advised a set of Ducati Monster (Mikuni) carbs are currently en route...stay tuned!
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Old March 16th, 2024, 08:05 AM   #355
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MOTM - Nov '18, Mar '17
above referenced carbs presently in hand. Pics/refurb info to follow.
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Old March 16th, 2024, 09:36 AM   #356
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Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R

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MOTM - Nov '18, Mar '17
Findings so far:

170 main jets? Seriously way oversized .....especially with jet kit needles set on position #5. Way too much fuel being sucked through these carbs (as owner has confirmed)

1 partially occluded pilot jet, though (thankfully) stock size #40

Thats all for now.
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Old March 16th, 2024, 10:47 AM   #357
ducatiman
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Name: Gordon
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MOTM - Nov '18, Mar '17
as i await ultrasonic process......
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Old March 16th, 2024, 12:23 PM   #358
Bob KellyIII
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that's what you get when the guy tries to HOP-UP the machine and make it FASTER.... and doesn't know anything about the running of an engine !
the when in doubt add more fuel syndrome ! and it does not work that way!
..... I bet when he gets the bike running again he won't believe how good it runs !!!!!
..... a little knowledge is a dangerous thing !
....
Bob........
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Old March 16th, 2024, 06:25 PM   #359
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MOTM - Nov '18, Mar '17
agreed Bk. The owner newly aquired the bike....it had jet kit, exhaust, removed air box cover.....he's now returning it back to stock. I have since supplied stock sized 140 main jets and stock needles.....should be perfect with stock components yet again.
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Old March 16th, 2024, 08:36 PM   #360
Bob KellyIII
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Wow those were really big jets in there then..... man I'm surprised it ran at all !
140 stock to 170 WOW ..... that is really unbelievable !
at most from 140 maybe as high as 150.... with engine work as high as 160 but 170?
it's like Blink, Blink UH ?
I bet you were surprised to see them in there....... never a dull moment eh ? LOL
....
when I was porting and polishing 2 strokes, I would usually have to go 2 sizes up to get a chocolate burn but that is 2 strokes !
so that's like 150 to 155 to 160 because the way they numbered the jets on 250cc bikes back then.... now days you can get single digit increments.... the old mikuni carbs back then jets were real hard to come by.... I had to on many occasion drill them out by hand with indexed drill bits.... twas easy though...ya find the drill bit that fit it perfectly and just drill it out with the next size bigger
.... but you had to be sure to file off the numbers for the next guy or he would have a hard time figuring out why it was running strange ! LOL




Bob....
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