Author Topic: Cobra motor disassembly and rebuild  (Read 109860 times)

0 Members and 2 Guests are viewing this topic.

Offline Bill/BentON Racing

  • Really Old Timer ...
  • *******
  • Posts: 6,725
  • Ex Honda Service Manager, Cert. Honda Tech - Racer
    • BentON Racing
Re: Cobra motor disassembly and rebuild
« Reply #700 on: November 27, 2016, 05:05:57 AM »
Well, I think they are just fine. Several reasons. If I can get a matching one ,we'll be good to go. In the meantime I kept hitting the broom on this! Lol.
BentON Racing Website
OEM Parts | Service | Custom Builds
BentON Racing Facebook
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.
______________________________________
See our latest build 'Captain Marvel' CLICK HERE

Offline Jerry Rxman Griffin aka MuthaF'er

  • This MuthaF'er is getting to be a
  • Really Old Timer ...
  • *******
  • Posts: 14,940
  • Bought her new 4/75
Re: Cobra motor disassembly and rebuild
« Reply #701 on: November 27, 2016, 10:09:31 AM »
Ahh haaaaa, the ace in the hole engine. Why not! 
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Bill/BentON Racing

  • Really Old Timer ...
  • *******
  • Posts: 6,725
  • Ex Honda Service Manager, Cert. Honda Tech - Racer
    • BentON Racing
Re: Cobra motor disassembly and rebuild
« Reply #702 on: November 27, 2016, 10:14:42 AM »
Nope, but I did just talk with Gary for about an hour! No, it's California Girls engine! Stay tuned.
BentON Racing Website
OEM Parts | Service | Custom Builds
BentON Racing Facebook
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.
______________________________________
See our latest build 'Captain Marvel' CLICK HERE

Offline Bill/BentON Racing

  • Really Old Timer ...
  • *******
  • Posts: 6,725
  • Ex Honda Service Manager, Cert. Honda Tech - Racer
    • BentON Racing
Re: Cobra motor disassembly and rebuild
« Reply #703 on: November 27, 2016, 02:55:27 PM »
Well lookee here! ;D
« Last Edit: November 27, 2016, 02:59:40 PM by Bill/BentON Racing »
BentON Racing Website
OEM Parts | Service | Custom Builds
BentON Racing Facebook
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.
______________________________________
See our latest build 'Captain Marvel' CLICK HERE

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,050
Re: Cobra motor disassembly and rebuild
« Reply #704 on: November 27, 2016, 03:20:24 PM »
Jeez bend and tap a little alloy bracket, get that heavy end of starter piece of #$%*e outa there..
 Looks like stroker... With. Infamous MReick heavy oldtech pistons...
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 Bill/BentON Racing

  • Really Old Timer ...
  • *******
  • Posts: 6,725
  • Ex Honda Service Manager, Cert. Honda Tech - Racer
    • BentON Racing
Re: Cobra motor disassembly and rebuild
« Reply #705 on: November 27, 2016, 04:28:03 PM »
We still investigating, me and BabyFace!  Lol.
BentON Racing Website
OEM Parts | Service | Custom Builds
BentON Racing Facebook
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.
______________________________________
See our latest build 'Captain Marvel' CLICK HERE

Offline Medyo Bastos

  • Master
  • *****
  • Posts: 1,616
  • Gusto mo titi ko?
    • project
Re: Cobra motor disassembly and rebuild
« Reply #706 on: November 27, 2016, 04:48:56 PM »
cam chain tensioner, broke?

Offline MRieck

  • Really Old Timer ...
  • *******
  • Posts: 10,612
  • Big ideas....
Re: Cobra motor disassembly and rebuild
« Reply #707 on: November 27, 2016, 05:14:17 PM »
Jeez bend and tap a little alloy bracket, get that heavy end of starter piece of #$%*e outa there..
 Looks like stroker... With. Infamous MReick heavy oldtech pistons...
Yes. No blow by
Owner of the "Million Dollar CB"

Offline kmb69

  • Master
  • *****
  • Posts: 2,041
Re: Cobra motor disassembly and rebuild
« Reply #708 on: November 27, 2016, 05:32:35 PM »
Jeez bend and tap a little alloy bracket, get that heavy end of starter piece of #$%*e outa there..
 Looks like stroker... With. Infamous MReick heavy oldtech pistons...
Jeez bend and tap a little alloy bracket, get that heavy end of starter piece of #$%*e outa there..
 Looks like stroker... With. Infamous MReick heavy oldtech pistons...
Yes. No blow by
Geez, Billy won't have to buy anchors for his next 4 bass boats!  ;D

Offline kmb69

  • Master
  • *****
  • Posts: 2,041
Re: Cobra motor disassembly and rebuild
« Reply #709 on: November 27, 2016, 05:34:29 PM »
cam chain tensioner, broke?
Good eye Medyo.  :o  Does look a little suspect, don't it?

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,050
Re: Cobra motor disassembly and rebuild
« Reply #710 on: November 27, 2016, 06:44:04 PM »
So it is a stroker ? Must be 1150 cc or more..
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 Bill/BentON Racing

  • Really Old Timer ...
  • *******
  • Posts: 6,725
  • Ex Honda Service Manager, Cert. Honda Tech - Racer
    • BentON Racing
Re: Cobra motor disassembly and rebuild
« Reply #711 on: November 27, 2016, 06:50:15 PM »
Tomorrow,  me tired....off to bed....but looks promising....
BentON Racing Website
OEM Parts | Service | Custom Builds
BentON Racing Facebook
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.
______________________________________
See our latest build 'Captain Marvel' CLICK HERE

Offline dragracer

  • Really Old Timer ...
  • *******
  • Posts: 5,147
  • CB750F Dragbike
Re: Cobra motor disassembly and rebuild
« Reply #712 on: November 27, 2016, 10:46:48 PM »
Tomorrow,  me tired....off to bed....but looks promising....

You still got a taste in your mouth from that super eliminator record you set don't you?? Craving more?? Lol.

Oh, did Bil Baxter email your official record certificate yet?? I gave him your email information but not the mailing address for the hard copy. 

Offline Bill/BentON Racing

  • Really Old Timer ...
  • *******
  • Posts: 6,725
  • Ex Honda Service Manager, Cert. Honda Tech - Racer
    • BentON Racing
Re: Cobra motor disassembly and rebuild
« Reply #713 on: November 28, 2016, 04:41:59 AM »
LMAO....guilty on all counts! Reminds me of someone who all year said I ain't running SEL at the finals...., but I'm glad you did! Lol. Competitive you are....and you wanted to bring home both! I bet between us they both fall again next year! Thanks for your help,  Bill
BentON Racing Website
OEM Parts | Service | Custom Builds
BentON Racing Facebook
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.
______________________________________
See our latest build 'Captain Marvel' CLICK HERE

Offline dragracer

  • Really Old Timer ...
  • *******
  • Posts: 5,147
  • CB750F Dragbike
Re: Cobra motor disassembly and rebuild
« Reply #714 on: November 28, 2016, 06:50:11 AM »
LMAO....guilty on all counts! Reminds me of someone who all year said I ain't running SEL at the finals...., but I'm glad you did! Lol. Competitive you are....and you wanted to bring home both! I bet between us they both fall again next year! Thanks for your help,  Bill

Without side by side competition, you may not have pushed as hard. I was just giving you some incentives. Lol.

Offline Bill/BentON Racing

  • Really Old Timer ...
  • *******
  • Posts: 6,725
  • Ex Honda Service Manager, Cert. Honda Tech - Racer
    • BentON Racing
Re: Cobra motor disassembly and rebuild
« Reply #715 on: December 08, 2016, 10:44:49 AM »
Here you go,  thanks to all who helped,  Bill
BentON Racing Website
OEM Parts | Service | Custom Builds
BentON Racing Facebook
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.
______________________________________
See our latest build 'Captain Marvel' CLICK HERE

Offline Old Scrambler

  • My CB750K3 has been in 39 States & 5 Provinces
  • Old Timer
  • ******
  • Posts: 3,814
Re: Cobra motor disassembly and rebuild
« Reply #716 on: December 08, 2016, 11:12:41 AM »
Nice wall-hanger 8) 8) 8)..........and I notice your sponsor is the big brother to mine ;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
2020 ROYAL ENFIELD Himalayan

Offline dragracer

  • Really Old Timer ...
  • *******
  • Posts: 5,147
  • CB750F Dragbike
Re: Cobra motor disassembly and rebuild
« Reply #717 on: December 08, 2016, 11:43:49 AM »
Well deserved Bill. You worked hard to get the bike in the ten's so this stands as a fitting reward. I'm sure you'll work even harder next time to lower and own both the MPH and ET records. Name in the books for all future generations and the old farts to see as well.

Offline Retro Rocket

  • Eggs are hard due too a
  • Really Old Timer ...
  • *******
  • Posts: 19,235
  • ROCK & ROLL
Re: Cobra motor disassembly and rebuild
« Reply #718 on: December 08, 2016, 01:47:43 PM »
Very cool.... 8)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,050
Re: Cobra motor disassembly and rebuild
« Reply #719 on: December 08, 2016, 01:50:43 PM »
Congrats.. Any 10 sec single stick is a cool bike..
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 Medyo Bastos

  • Master
  • *****
  • Posts: 1,616
  • Gusto mo titi ko?
    • project
Re: Cobra motor disassembly and rebuild
« Reply #720 on: December 08, 2016, 03:44:56 PM »
mak'n us old farts proud  8)

Offline kmb69

  • Master
  • *****
  • Posts: 2,041
Re: Cobra motor disassembly and rebuild
« Reply #721 on: December 08, 2016, 04:01:17 PM »
Ditto!   ;)

Too Kool, Billy!  8)

Offline dragracer

  • Really Old Timer ...
  • *******
  • Posts: 5,147
  • CB750F Dragbike
Re: Cobra motor disassembly and rebuild
« Reply #722 on: December 08, 2016, 04:50:18 PM »
Well, my hard copy didn't arrive yet so here's a picture of a PDF document  showing the other half of the CB/SS national record. Mine is for lowering my previous ET record from 2015. Next season is going to be very interesting.

Offline Bill/BentON Racing

  • Really Old Timer ...
  • *******
  • Posts: 6,725
  • Ex Honda Service Manager, Cert. Honda Tech - Racer
    • BentON Racing
Re: Cobra motor disassembly and rebuild
« Reply #723 on: December 10, 2016, 07:03:56 PM »
Yes, it is! Lol. I'm so tired, wore out all my hand files rounding corners and filing additional cooling slots, wow time consuming! LMAO
« Last Edit: December 10, 2016, 07:05:34 PM by Bill/BentON Racing »
BentON Racing Website
OEM Parts | Service | Custom Builds
BentON Racing Facebook
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.
______________________________________
See our latest build 'Captain Marvel' CLICK HERE

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,050
Re: Cobra motor disassembly and rebuild
« Reply #724 on: December 10, 2016, 07:07:54 PM »
Ummmm that was an early original head....
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