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Author Topic: Classic Bonneville Racer  (Read 46317 times)

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Offline Old Scrambler

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Re: Classic Bonneville Racer
« Reply #75 on: August 05, 2014, 01:17:57 pm »
Joe...........You could have a good discussion with Dave Murre about the 360 motor........He built a winning 360 flat-tracker a few years ago for a current pro-racer.

Jerry..............Zak is planning to be there along with his Dad 8)   The banner and the log-book..............you are aware that I plan to have the current Pimp-Lizard riding on the CBR ;) ;D ;D ;D ;D ;D
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
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Offline Old Scrambler

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Re: Classic Bonneville Racer
« Reply #76 on: August 09, 2014, 06:32:12 am »
We will try to fire-up the motor today :)  Cam-timing is spot-on for opening events.........but a little short on closing......just a little.

Oil & filter, plugs, carbs, header-clamps, and a fuel-bag to be installed..........then ear-plugs.

Later.......... ;D ;D ;D
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
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Offline Sam Green Racing

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Re: Classic Bonneville Racer
« Reply #77 on: August 09, 2014, 06:38:07 am »
Good luck Dennis.

Sam. ;)
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Offline Bill/BentON Racing

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Re: Classic Bonneville Racer
« Reply #78 on: August 09, 2014, 07:01:06 am »
What Sam said! Pics and video! ;D 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.
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Offline 754

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Re: Classic Bonneville Racer
« Reply #79 on: August 09, 2014, 08:57:34 am »
Good luck....awaken the beast....
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
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

Offline bwaller

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Re: Classic Bonneville Racer
« Reply #80 on: August 09, 2014, 09:14:10 am »
That damned first startup is always stressful...even though you've been over & over & measured & calculated and test fit...

It'll be smiles all around.  ;D

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Classic Bonneville Racer
« Reply #81 on: August 09, 2014, 11:19:22 am »
Hell yeah!
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Old Scrambler

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Re: Classic Bonneville Racer
« Reply #82 on: August 09, 2014, 04:13:50 pm »
I was tooooooo optimistic :-[

The carbs are on.........after a few grunts.........and the motor turns just fine with the electric starter.........but no plugs because we do not have oil pressure. Before we take anything apart, Dave will try his big air-drill and socket applied to the crankshaft on Monday AM.  That will give us faster rpms so it should push some oil. We can see that we have oil in the sump because the edge of the cam-chain is wet.

All of the painted parts are complete and waiting...................I'll post a few pics later.

Jerry............Grasscutter and his dad will arrive on Saturday, the 23rd, and leave on Tuesday.   
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Classic Bonneville Racer
« Reply #83 on: August 09, 2014, 09:51:55 pm »
My first time in 2013 I got no oil pressure until it fired. Worried the #$%* out of me. I installed the pump dry, filled the tank, put SOME oil in the gauge galley and top end without initial success. This past time I filled the tank, I tried to prime the pump but it seems most drains out anyway and dumped about 2 quarts in the top end. I'm thinking thats what does the trick since the stopper valve keeps the oil tank full. The 2 quarts drains to the sump that way and the pump picks it up and sends that to the engine.  Much quicker pressure before firing up but never as quick as you'd like. Sweat it out  :o  Assembly lube to the rescue, yes!
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Old Scrambler

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Re: Classic Bonneville Racer
« Reply #84 on: August 10, 2014, 11:12:32 am »
Dialing-in the cam..........Intake & Exhaust





Trial-fit of tank & seat.........front fender is complete



Oil-tank...........its smaller than stock and the filler is inboard beneath the seat..........stock hoses were retained. RS34 Carbs are on :)


« Last Edit: August 10, 2014, 11:20:55 am by Old Scrambler »
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
2000 Aprilia Pegaso

Offline MRieck

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Re: Classic Bonneville Racer
« Reply #85 on: August 10, 2014, 12:22:19 pm »
Looks very nice Dennis. If it goes as good as it looks you will do well. ;) ;D
Owner of the "Million Dollar CB"

Offline bear

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Re: Classic Bonneville Racer
« Reply #86 on: August 10, 2014, 05:47:36 pm »
Dennis,
.
We have modified the cap on the oil feed journal that most people use to fit their oil gauge.
It's been drilled out and we have fitted a hose tail.
We then use a large syringe attached to a short length of hose to fill all the oil galleries under a little pressure,  only takes a minute.
Replace the original cap or gauge and Bob's your uncle, instant oil pressure. ;)
Probably a little to late to help now, sorry about that.

Cheers,
Brian
« Last Edit: August 10, 2014, 06:01:51 pm by bear »
The older I get the faster I was.

Offline Old Scrambler

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Re: Classic Bonneville Racer
« Reply #87 on: August 10, 2014, 06:16:25 pm »
Just in time ;D ;D ;D

Dave is very cautious about starting a motor. He likes to SEE oil pressure before it fires. Your tip will re-enforce my suggestion to him to remove the center-plug (former sending-unit to the idiot-light) and do as you suggest.  He has the tools to get it done.  Thanks for the help and encouragement.

My wife is trying to teach me how to use the video feature on my camera..........no promises ;) 
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
2000 Aprilia Pegaso

Offline 754

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Re: Classic Bonneville Racer
« Reply #88 on: August 10, 2014, 07:28:04 pm »
What the long range weather forecast look like.. ,
 The flats have been rained out nearly every event since 2013..
 Gotta stop, hope it dries up and stays clear..
« Last Edit: August 10, 2014, 07:29:44 pm by 754 »
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
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

Offline Old Scrambler

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Re: Classic Bonneville Racer
« Reply #89 on: August 10, 2014, 07:38:40 pm »
HOT & SUNNY..............I hope ;D

My daughter lives at the same latitude in northern California............it rained there today which is a good thing for the forest fire situation.........but will the rain get to the salt-flats?............usually not at this time of year.  I think the recent rains were caused by changing winds in the Pacific due to the hurricanes. Now that event is past................but we will be watching the weather very closely beginning next week.  Stay tuned so you get the latest report before you hit the road ;)
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
2000 Aprilia Pegaso

Online scottly

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Re: Classic Bonneville Racer
« Reply #90 on: August 10, 2014, 08:00:54 pm »
We can see that we have oil in the sump because the edge of the cam-chain is wet.

The pressure side of the oil pump is supplied from the tank, not the sump. Brian's suggestion of injecting oil into the galley is a good idea.
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline Old Scrambler

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Re: Classic Bonneville Racer
« Reply #91 on: August 11, 2014, 06:05:12 pm »
So we pumped about a 1/3-qt of 20-50 into the galley............no go >:(

We poured about a 1/2-qt down the cam-tower...........no go >:(

We turned the motor over with a large high-speed drill and succeeded in pumping oil into the tank.........to the point that it was FULL :o

So we drained the sump and dropped the pan...........worked everything in the pump by hand...........re-installed with a new gasket.........sure happy to have spares on hand.........and spun the motor with the drill..............Yeah ;D ;D ;D ;D ;D

Proceeded to hook up the fuel bag and the ignition...........watched fuel (VP-110) flow to the new RS34s...........applied separate battery power to the starter............and SUCCESS ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D

THE CBR RUNS 8)  We ran it through a few short heat-cycles at about 2500 to 3000 rpm..............advised by the cam and carb specs to keep the motor happy at those speeds.............or higher ;D  I'll try to post a pic or 3 later.........

Final wiring and a long-term heat-cycle will be tomorrow...........then re-torque............installithe air-intake and tach, adjust the brake and clutch............then its time to RIDE...........short test ride............then a little longer............and then ;D ;D ;D ;D ;D ;D ;D ;D

 
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
2000 Aprilia Pegaso

Offline bwaller

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Re: Classic Bonneville Racer
« Reply #92 on: August 11, 2014, 06:45:37 pm »
Nice.

Offline MCRider

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Re: Classic Bonneville Racer
« Reply #93 on: August 11, 2014, 07:12:12 pm »
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline MRieck

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Re: Classic Bonneville Racer
« Reply #94 on: August 11, 2014, 08:09:05 pm »
Hand cycling the pump always works....at least it has for me. The engine must sound nice with that CR.
Owner of the "Million Dollar CB"

Online scottly

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Re: Classic Bonneville Racer
« Reply #95 on: August 11, 2014, 08:43:28 pm »
Why do you refer to it as the "CBR"? I thought a CBR was a modern bike??
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Classic Bonneville Racer
« Reply #96 on: August 11, 2014, 08:59:33 pm »
About time  ;) 2 weeks to spare too. I was beginning to think you were going to have to ride behind Dave on I-80 to get it broken in.

Congrats guys. Looking forward to the ride report. Will you get it on a dyno?
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline MCRider

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Re: Classic Bonneville Racer
« Reply #97 on: August 12, 2014, 07:20:49 am »
Why do you refer to it as the "CBR"? I thought a CBR was a modern bike??
You're going to kick yourself, as I did:
CBR=Classic Bonneville Racer.  Thread title.
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline Old Scrambler

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Re: Classic Bonneville Racer
« Reply #98 on: August 12, 2014, 09:08:01 am »
Jerry.............that has been considered..........

Scott........MC has my back!

Mike........The motor sounds better than 'good'............I'm optimistic and Dave is happy. Dave was impressed with the ability of the RS34s to work right out of the box. We began with 125-jets. We will know a lot more after a 'test' ride........Friday or Saturday.
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
2000 Aprilia Pegaso

Online scottly

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Re: Classic Bonneville Racer
« Reply #99 on: August 12, 2014, 07:01:08 pm »
Why do you refer to it as the "CBR"? I thought a CBR was a modern bike??
You're going to kick yourself, as I did:
CBR=Classic Bonneville Racer.  Thread title.
:-[ :-[  OK, how about C.B.R. for dummies like me? ;D
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

 

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