Author Topic: Calendar Girl Gets New Engine,Yosh,RC,etc.  (Read 175114 times)

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Offline Bill/BentON Racing

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2275 on: December 11, 2015, 06:32:32 PM »
Why you degree. Last engine TDC mark was dead on. This one is off.
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Offline Old Scrambler

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2276 on: December 12, 2015, 07:48:11 AM »
Bill..........the OFF could be attributed to your NEW piston stop...............when the piston is at TDC there is 2-3 degrees or more of crank rotation and chain-slop to measure when the piston is 'stopped' ...............your mark now looks exactly like mine on the C.B.R.  Now check your ignition timing (on dyno)..............it may need a few advance degrees ;) BTW......I removed the pump-pin on my RS-34s 8)
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Offline POPS 911

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2277 on: December 13, 2015, 06:53:52 AM »
BILL: The reason for the BOG off the line on our 1075CC KZ'S was that 34mm carbs pin which while on the 2-step made the motor TOO RICH = BOG.   Could your bog could have been from being to RICH and not to lean ??????  read the above posts = no rod, adjusted rod , and FRANK IN THE 10'S BROKE PUMPER.
The problem with a dyno tune for that rod , your on a drum that you can turn by hand and not a sticky starting line that tends to bog your motor down in the first place, with a super sticky track and too fat fuel off the line =bog.
GEORGE BRICE said to us MSP : On your PRO-STOCK bike you want just a little bog off the line to stop the lock up from spinning rear wheel [ you going up in smoke ] if you spin on the hit the lock up keeps the tire spinning. Bill in your case the clutch is in your hand and other than rolling out of the throttle [losing ET ] and with a big bog your dial in is a guess = right ????

Offline Bill/BentON Racing

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2278 on: December 13, 2015, 05:54:36 PM »
POP's believe you be correct. You learn in this game if it didn't work for them....99% of the time it ain't working for you either!!  ;D I still can scare em though!  Lol! Guess this pics why they dialed me at 7.11!! Billy
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Online scottly

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2279 on: December 13, 2015, 06:08:12 PM »

The problem with a dyno tune for that rod , your on a drum that you can turn by hand and not a sticky starting line that tends to bog your motor down in the first place, with a super sticky track and too fat fuel off the line =bog.

Try to spin that drum up to 100mph in seven or eight seconds by hand, Pops. ;)
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Offline POPS 911

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2280 on: December 14, 2015, 05:51:19 AM »
My right hand could be wicking up a STROKER BUSA ON THAT DRUM at 6-7 seconds 100mph but would not get you or I a win ticket at the end of 1320' at the ticket booth....
It's ST/ET bracket racing, be in first gear, do-not red light , take a look at mph cone , and womp them at 1319' !!!!!

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2281 on: December 14, 2015, 11:26:00 AM »
Did it fire yet?
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline MRieck

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2282 on: December 14, 2015, 11:39:36 AM »
Bill.....I talked about the accelerator pump at Valdosta (or just prior) but got to sick to do anything.
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Offline Tintop

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2283 on: December 14, 2015, 01:28:20 PM »
Questioning minds would like to know - if accel pumps are not good for drag bikes, why did RC used Webers??
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Offline Bill/BentON Racing

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2284 on: December 14, 2015, 08:36:31 PM »
Yah, me too. I had no problems with it so far...and yes all 4 are working. Mike Rieck. ..call me please sir! 
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Offline dragracer

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2285 on: December 14, 2015, 08:43:23 PM »
No knowledge of webers but that burst of extra fuel from Mikunis while trying to launch a bike hard will cause it to go rich and bog in most cases. I suppose it depends on how hard you twist the throttle. Riding like grandma pulling off from a stop light in the middle of downtown or riding like you stole it.

Online scottly

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2286 on: December 14, 2015, 09:03:42 PM »
Frank, are you and Billy running the exact same carbs? (I can't keep up... :-[)
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Offline dragracer

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2287 on: December 14, 2015, 09:09:27 PM »
Frank, are you and Billy running the exact same carbs? (I can't keep up... :-[)

Lol Scottly,

You know i don't make weekly changes. But yes, Bill and I are using Mikuni RS flatslide carbs. I'm running 36mm carbs and he has 34's. I bought mine new when i first built the bike. And yes, i went through the bogging issue til i figured it out.

Offline POPS 911

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2288 on: December 15, 2015, 05:36:46 AM »
BILL: Did that DYNA DRL300 tell you what type plug wires to use [ DW800 ] ???? Call Dave Schnitz and ask him, never seen RED Dyna plug wires must be new on the market.

Offline dragracer

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2289 on: December 15, 2015, 08:35:15 AM »
My right hand could be wicking up a STROKER BUSA ON THAT DRUM at 6-7 seconds 100mph but would not get you or I a win ticket at the end of 1320' at the ticket booth....
It's ST/ET bracket racing, be in first gear, do-not red light , take a look at mph cone , and womp them at 1319' !!!!!

Pops,

I sure hope ya'll don't bracket race that Big Stroker Busa. I can't imagine having to tear into that thing 4-5 times over a season to change out the bearings. Strokers are brutal on the rod bearings. And how many passes did you say you get before freshening it up?? These boys on my end dig deep to keep those big stroker motors reliable and I know MSP ain't cheap up there.

Offline 754

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2290 on: December 15, 2015, 09:24:24 AM »
As long as you play the throttle and clutch together, you should get around any bogging.
 If you let the clutch out to soon and it bogs..let it out slower..
 I tried to stay in the higher rpms till first gear catches up to the motor..then fully release clutch..ie most of the way through first before releasing clutch..
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Offline Bill/BentON Racing

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2291 on: December 15, 2015, 01:43:47 PM »
Yippee Kai Yeah,  finally!  ;D
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Over 35 years of experience working on vintage motorcycles, with a speciality in Honda SOHC/4 with a focus on the CB750 and other models as well from 1966 - 1985.
______________________________________
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Offline dragracer

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2292 on: December 15, 2015, 02:34:32 PM »
Good buy Bill. Buy an offset front sprocket from Kenny and you're on target. Might have to get the rear sprocket adapter milled down some to move the chain inwards towards the wheel to help with chain alignment.

Offline Bill/BentON Racing

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2293 on: December 15, 2015, 03:33:11 PM »
Frank, thanks. Need to  talk to Kenny anyway. K, Bill
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Over 35 years of experience working on vintage motorcycles, with a speciality in Honda SOHC/4 with a focus on the CB750 and other models as well from 1966 - 1985.
______________________________________
1993 HRC RS125 | 1984 NS400R | 1974 Honda CB750/836cc (Calendar Girl) | 1972 CB 500/550 Yoshi Kitted 590cc | 1965 Honda CB450 Black Bomber | 1972 Suzuki T350 | 1973 88cc | Z50/Falcons Pit Bike | 1967 CA100| 1974 CB350 (400F motor)...and more.
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Offline kmb69

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2294 on: December 15, 2015, 03:39:25 PM »
Nice wheel, Bill.  8)

Offline gschuld

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2295 on: December 15, 2015, 07:15:51 PM »
I assume you guys are all using 530 chains and sprockets for drag racing?  High end 520 chains and sprockets are rated for power levels well beyond what out sohc motors can put out, but not sure about the shock loads of 1.40 60 ft launches. The extra material in the 530 series would be a benefit there I guess.

George

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2296 on: December 15, 2015, 07:29:58 PM »
Yes George, we're using 530 chains. EK, Drz2

Offline dragracer

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2297 on: December 15, 2015, 07:30:28 PM »
One important thing you will need to pay attention to is the proximity of your chain to your stock absorber. It gets really tight as you move the chain outboard. You'll have fun threading the needle with that wider tire/ rim.
« Last Edit: December 15, 2015, 07:33:42 PM by dragracer »

Offline Bill/BentON Racing

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2298 on: December 15, 2015, 07:47:02 PM »
Yes, not much room, yes Keith, it looked like new in the pics, K. ;D
BentON Racing Website
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Over 35 years of experience working on vintage motorcycles, with a speciality in Honda SOHC/4 with a focus on the CB750 and other models as well from 1966 - 1985.
______________________________________
1993 HRC RS125 | 1984 NS400R | 1974 Honda CB750/836cc (Calendar Girl) | 1972 CB 500/550 Yoshi Kitted 590cc | 1965 Honda CB450 Black Bomber | 1972 Suzuki T350 | 1973 88cc | Z50/Falcons Pit Bike | 1967 CA100| 1974 CB350 (400F motor)...and more.
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Offline 754

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Re: Calendar Girl Gets New Engine,Yosh,RC,etc.
« Reply #2299 on: December 15, 2015, 08:01:50 PM »
520 should help clearance wise, and less rotating mass.  Slipping clutch vs dumping is far easier on chains..
If a 520 can hold up on a , Busa...shouldnt be hurting them with our bikes..
« Last Edit: December 15, 2015, 08:04:20 PM by 754 »
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way