Author Topic: Anyone out there have bored factory carbs? (Read 17080 times)

POPS 911 · « **Reply #50 on:** March 10, 2013, 03:33:11 AM »

I WILL SEND YOU A E-MAIL PICTURE TODAY OF RC CB750 CARBS BORED 28.9MM. How could anyone tell you what numbers theirs carbs would run on your bike

ever thing would have to be the same just like the elevation were you live, these are old style carbs that need to be tuned [ jetted ] to your location and not like CV carbs that fixed the problems for the OEM bike builders. Jetting on the dyno at [ 600' ] will be a fine tune, but a ride to the mountains [ 9200' ] and the motor runs different= right

? On my old bikes I run 110 low lead AV GAS and this helps all over the riding area. Never got a PM from you. I got 29,33,34 RS CARBS and Flat slides.

POPS BK911

gschuld · « **Reply #51 on:** March 10, 2013, 06:52:53 AM »

Pops,

Sorry, I hadn't realized that the PM I sent you did not go through. A moderator mentioned that there have been problems with PMs not getting through lately. Regarding the carb setup, perhaps you misunderstood my question. First of all, the fine points of carburetion is not my strong suit so I am speaking about a subject well beyond my knowledge level. By modifications I was referring not to jet sizes and the like.

My search for knowledge led me in a bunch of directions, one of them was Monty Campbell(X-pipe guy). He appears to be the only guy still advertising his boring service on early round top carbs(since the mid/late 70s). He is still around. He and I spoke about 2 weeks ago. He mentioned that he does significant "surgery" on his carbs beyond the basic milling of the opening. On top of that he offers an addition of a separate fuel circuit for an added fee. Without reliable sources with first hand knowledge of his work coming forward and insisting that he knows what he is talking about, I'm left with little more than a (fairly strong) sales pitch to go by. He wouldn't, of course, get into any details of WHAT he does beyond the physical boring. Perhaps it's important, perhaps it's his overblown justification for charging nearly $500 for his services. He did mention that his work would be tailored differently if the carbs were going on a drag bike vs a street bike.

Pops, I look forward to seeing your carbs and hearing anything else you know about them.

Bwaller,

If the bike wasn't a 69 K0, it would be so much easier for me to just let it go a run a set of smoothbores. There is more knowledge out there, I'm sure of it. Just not readily available information. I could take a chance and buy a set of vintage bored carbs with unknown modifications done to them and just give them a try and see what happens. But until the ported RC1000 motor is up and running, I don't have a motor powerful enough to "need" the extra cfm to properly test them. $:-\$

POPS 911 · « **Reply #52 on:** March 12, 2013, 05:54:49 AM »

I SENT YOU PICTURES ! ARE YOU THE REAL DEAL

? YOU WANTED BORED OUT CARBS AND I GOT A PERFECT SET = ABOUT 30.3MM FOR A CB750 SOHC.................. YOU FIND A BETTER DEAL AND I WILL BUY THEM.

POPS BK911

Bill/BentON Racing · « **Reply #53 on:** March 12, 2013, 06:11:31 AM »

POPS,chill,George for real...just like you! He's seeking info and carbs.When you taking your bike out again? We start on the 30th @ Commerce.George,if you want a set(you do) POPS would be a good buy.Bill

gschuld · « **Reply #54 on:** March 12, 2013, 01:59:44 PM »

Pops911,

I have no idea what is going on...

I have been checking my e-mail since the 10th and haven't found anything from you. Checked my spam folder as well. Granted, some days I can't seem to find the milk staring right at me on the top shelf of the fridge, but for some reason, I'm not finding your e-mail.

Again it's gschuld@hotmail.com

Life is WAY too short to be jerking people around, it's not my intention I assure you.

George

Retro Rocket · « **Reply #55 on:** March 12, 2013, 03:34:48 PM »

George, get rid of the hotmail account, i have been told Microsoft are dumping hotmail so it will disappear in the near future. It is without doubt the worst email service around and is on a lot of company ban lists as they refuse to open any mail from hotmail, it is the most hacked, virus filled email service around. My account {and nearly everyone i know who had hotmail} was hacked and sent out 16000 virus emails to everyone in my list, microsoft closed it down and i would and didn't ever use it again... Try Gmail or a dedicated mail program like thunderbird or outlook .....

gschuld · « **Reply #56 on:** March 12, 2013, 03:56:06 PM »

Don't hold back...tell me what you really think!

...

Seriously, thanks for the info. I've been reluctant to switch as I've had this email since wheels were still square. Sounds like I don't have much of a choice!

Thx,

George

Retro Rocket · « **Reply #57 on:** March 12, 2013, 04:16:05 PM »

Quote from: gschuld on March 12, 2013, 03:56:06 PM

Don't hold back...tell me what you really think! ... Seriously, thanks for the info. I've been reluctant to switch as I've had this email since wheels were still square. Sounds like I don't have much of a choice!

Thx,

George

Yes, there was a time when we all had Hotmail accounts but i had increasing trouble with the service, i bought guitars from Japan and have some great contacts there and after i while my emails were not being returned, in the end {to cut a long story short} i just opened up a Gmail account and all was solved, i have 3 different email accounts and none are hotmail, after the last episode i dumped hotmail completely....

dusterdude · « **Reply #58 on:** March 13, 2013, 03:29:49 PM »

Hotmail aint nothin but scammers these days

gschuld · « **Reply #59 on:** March 13, 2013, 07:28:30 PM »

Pops 911,

Perhaps my Hotmail account isn't allowing your e-mails to get through. Sadly, my lack of computer skills probably does not help the situation. Regardless, I have no interest in needlessly jerking you around. Your offer sounds just fine to me. I'd be happy to buy your carbs from you assuming you haven't written me off by now!

I understand that you don't have a Paypal account. No problem. Please PM me your mailing address and I'll send you a certified bank check along with my mailing address. Shipping a set of carbs should be under 20 bucks(I just shipped a cb750 seat and an ARD magneto setup in the same box with overkill wrapping in a big box for under $30) plus the $250 your asking for the carbs, so does $270 sound fair? I'll send you more once shipped if shipping costs go over for some reason. Again, sorry for the communication issues. I promise, I'm generally very easy to deal with

I think at this point that Bill Benton can vouch for me

George

gschuld · « **Reply #60 on:** March 14, 2013, 04:08:29 PM »

Pops,

I'd also like to have them shipped to Bill Benton as he'd like to experiment with them for a bit before I need them..

Thanks,

George

POPS 911 · « **Reply #61 on:** March 17, 2013, 07:48:50 AM »

What size jets do you need in the carbs = I got A K&L BOX with 20 new SETS OF 4 and a ANDERSON & FORRESTER JET DRILL KIT that has sizes # 81, .22mm or .008 in. up to #40, 2.44mm or .096 in. that I can custom drill, 42 drills in this set. I would think that BILL has the same jets and custom drill set ups for custom tuning on DYNO. So what size do you want in carbs??

POPS BK911

Bill/BentON Racing · « **Reply #62 on:** March 17, 2013, 08:04:54 AM »

POPS,cool,yes have jet drills,but if you got em,45 pilots and 137.5,140,or 142.5 mains be fine.Can move needle later,Thanks,Bill,appreciate it.

gschuld · « **Reply #63 on:** March 17, 2013, 10:43:40 AM »

Pops,

I'm happy with whatever pilots/jets Bill would find most useful. He'll be playing with them first...

You can e-mail me your address and I can send you a bank check if you would prefer to avoid online banking options. Or you could give the info to Bill as we seem to be in contact fairly consistently recently

. Sorry for the communication issues. It was not my intention I assure you...

Or if you would prefer, my cell is 732-966-seven-nine-eight-one.

George

gschuld@hotmail.com

POPS 911 · « **Reply #64 on:** March 18, 2013, 05:21:05 AM »

CB750 30MM CARBS : Are you going to be running alcohol fuel, as a 142.5 main jet on a 750cc SOHC must be out to 1280cc+.. I do not have any N424-22-XXX = 019-034 #45 SLOW JETS as all my race carbs are MIKUNI or FBG [ NO JETS ]. So you will have to jet drill out with a # 77 and that gives you 47. Here is the name of the best place to get carb parts [ gas or alcohol ] CARURETOR PARTS WAREHOUSE 4207 RIDGE RD CLEVELAND, OHIO 44144 PHONE# 216-635-1099 or www.carbparts.com

POPS BK911
PS. BILL do you wonder why your number plate was always sooty black

Way to RICH............

Bill/BentON Racing · « **Reply #65 on:** March 18, 2013, 05:38:07 AM »

POPS, 135 mains fine, running a RC head 1000cc kit RC also.Thanks Bill yes was rich on bottom,.

gschuld · « **Reply #66 on:** March 18, 2013, 03:00:47 PM »

Pops 911,

I'm not sure exactly what Bill will use the carbs for/on this season, but the plan is to have them on my 1969 RC 1000cc motor next year. It is a full RC build, 10:1 pistons, RC "race ported" head, with lightened and polished rockers, 1mm oversized intakes, RC springs/retainers, lash caps, an RC #315 cam(thanks Bill, just got it today), RC super rods, etc. It should put out a reasonable amount of power for an old school 1000cc motor. The motor will be going into a matching 11/69 framed "hot" street bike, not meant for competition. Ability to idle reasonably would be important for my interests if at all possible.

But for now, I'll have Bill set the carbs up for whatever he wants to do with them...

A bank check will be on it's way to you tomorrow morning.

Thanks again,

George

BLUE71TURBO · « **Reply #67 on:** March 18, 2013, 04:17:50 PM »

Quote from: dusterdude on March 13, 2013, 03:29:49 PM

Hotmail aint nothin but scammers these days

Hotmail works fine for me.

And i ain't no scammer !

Oh, is anyone interested in buying a RC tripple engined dragbike ? Only $ 5,000.00 shipped to your door.

Bill/BentON Racing · « **Reply #68 on:** March 18, 2013, 05:30:24 PM »

Is that engine 1, 2, or 3? lol. Carbs not bored out!! Oh well might be, we'll just get it going right now. Bill

POPS 911 · « **Reply #69 on:** March 19, 2013, 05:22:59 PM »

gschuld : UPS [ THE BROWN TRUCK ] will be bring them CB750 CARBS to BILLS door THURSDAY, what I'm saying about BIG jets, I had a couple ZIRS 1000 cc stock bore KZ W/.385 LIFT CAM, 1 OVER ON THE VALVES, PORTED, .20 OFF HEAD motor which I made 500-600 passes on and they never had a 140 main jet in the 29 mm Mukuni Smoothbore w/stacks that ran 10.60 at 1328-2100 DA. for years. The STAR RACING MEGAPHONE was always a light gray color on the inside and on the dyno 15-1.
Like I said these are GAS CARBS not ALCOHOL. I do not know if you can get conversion kits for these old carbs so the alcohol does not eat up the rubber insides. I sent 4 small main jets that can be jet drilled out to you spec for your motor.

POPS BK911

Bill/BentON Racing · « **Reply #70 on:** March 19, 2013, 07:32:41 PM »

POPS, that's good. Thanks appreciate you. Good Luck this year. Bill

gschuld · « **Reply #71 on:** March 19, 2013, 10:01:46 PM »

Pops 911,

Your check is on it's way. Thanks for the carbs, Bill will hopefully give them some good exercise this season;)

Curious, what would be your best guess for a starting point for jets/pilots for my ported RC 1000 motor with a RC #315 cam in it?

George

POPS 911 · « **Reply #72 on:** March 21, 2013, 05:12:48 AM »

I would ask the guy who did the head and the engine, Size and flow are what the jet needs to be right. If all else fails ask SAM GREEN as he knows everything on this site and many other sites 13,000 hits alone must be some record for knows alot. Do-not start out with a 142 main jet as your plugs will foul out soon = right SAM. If you think your RC 1000 head and motor is big we can go over to my mans shop in INDY on his flow bench and dyno and run my stock KZ 1000 LTD J-MODEL and I will pull the head right their and put it on the flow bench and you will see good numbers from 1982 JAPAN stock. Did you ever ride a SUZUKI GS1150 [ bought one from OEM owner $1100 w/6700 miles ] like SAM says my luck, now thats raw power = same block as NHRA PRO-STOCK for years. I'll send BILL a picture of this RED AND WHITE fairing GS1150. When BUSA comes out in 2015 at 1500cc its over for all the rest = bet that !!

POPS BK911

gschuld · « **Reply #73 on:** March 21, 2013, 05:48:18 PM »

Pops,

I did not intend to suggest that my RC built 1000cc motor is a monster power maker or anything. Nearly any modern 600cc sport bike would be able to blow me into the weeds with little effort. And that's just fine! I love these bikes because they are classics. They are purposeful, enjoyable to own and work on, fun to ride, and allow me to enjoy the company of the many like minded people here. Hell in 20 years worth of motorcycle ownership, I have yet to ride a bike newer than 1974. RC Engineering bikes/motors/speed parts appeal to me because they were at or near the forefront of their field. They brought us outrageous drag bikes, and sold us tons of parts as a result of their successes on the track.

Mike Reick could easily build a modern 1000cc motor that would outperform the RC 1000 motor in every measureable way. Times have changed, new things were learned, metallurgy has improved. But I will favor the old school vintage stuff every time... just my personal preference.

Thanks again for the carbs! Hopefully Bill Benton will give them a good thrashing on the Calendar Girl and be able to offer some feedback on how the bike runs with them compared to the stock unbored but otherwise identical carbs he has now. Looking forward to it.

George

Bill/BentON Racing · « **Reply #74 on:** March 21, 2013, 06:51:42 PM »

Carbs arrived just fine.Thanks POPS, more later, Bill

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Author Topic: Anyone out there have bored factory carbs? (Read 17080 times)