Author Topic: Cobra motor disassembly and rebuild  (Read 107660 times)

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Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #125 on: January 01, 2016, 05:25:22 PM »
LMAO,  We'll see how it comes out, I got a feeling, a feeling deep inside!!  ;D, Bill
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Offline Medyo Bastos

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Re: Cobra motor disassembly and rebuild
« Reply #126 on: January 01, 2016, 05:32:11 PM »
Those wheels have got my attention  ;D

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #127 on: January 02, 2016, 06:37:29 AM »
The 18 rear is for sale or trade!! ;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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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 Medyo Bastos

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Re: Cobra motor disassembly and rebuild
« Reply #128 on: January 02, 2016, 10:59:11 AM »
ummm, i mean the 17 you joker


...Save a tree, eat a beaver...

Offline dragracer

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Re: Cobra motor disassembly and rebuild
« Reply #129 on: January 02, 2016, 11:01:35 AM »
We all want the 17".

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #130 on: January 02, 2016, 12:29:23 PM »
Yes, we do! Just got this and a RC swingarm! K.,Bill
« Last Edit: January 02, 2016, 12:39:45 PM by Bill/BentON Racing »
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 seanbarney41

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Re: Cobra motor disassembly and rebuild
« Reply #131 on: January 02, 2016, 01:06:30 PM »
Bill, how do those RC arms compare to stock weight wise?...that a legit F2 motor in your truck or just painted black?
If it works good, it looks good...

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #132 on: January 02, 2016, 02:15:57 PM »
Legit, 410 on back of head, 23 first 2 of engine serial number!  K, Bill  I'll weigh them and let y'all kniw, Bill
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 Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #133 on: January 02, 2016, 02:30:09 PM »
For the next one,we going big, ok, bigger!! ;D, Bill
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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See our latest build 'Captain Marvel' CLICK HERE

Offline Restoration Fan

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Re: Cobra motor disassembly and rebuild
« Reply #134 on: January 02, 2016, 03:20:53 PM »
We all want the 17".
That's what she said!

(Sorry...couldn't help it.  ::) )
Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline kmb69

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Re: Cobra motor disassembly and rebuild
« Reply #135 on: January 02, 2016, 05:07:09 PM »
Legit, 410 on back of head, 23 first 2 of engine serial number!  K, Bill  I'll weigh them and let y'all kniw, Bill
Check that engine number again. Should be 26xxxxx.

Offline dragracer

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Re: Cobra motor disassembly and rebuild
« Reply #136 on: January 02, 2016, 07:05:49 PM »
Does that arm pivot Bill??

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #137 on: January 02, 2016, 07:38:30 PM »
Yes to 26 and to arm pivots!!! K, Bill
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 dragracer

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Re: Cobra motor disassembly and rebuild
« Reply #138 on: January 02, 2016, 09:32:31 PM »
Yes to 26 and to arm pivots!!! K, Bill

You've been sanding and polishing your fingers off. All that shiny stuff should really have you running some low numbers. All my parts are old and dull looking. Maybe if I follow your lead, I can get my junky bike into the 9's.

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #139 on: January 02, 2016, 11:28:52 PM »
 ;D , yeh right Master Po, I ain't done nothing yet! .....but I will!!!  ;) ;D, Bill
« Last Edit: January 02, 2016, 11:37:19 PM by Bill/BentON Racing »
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 POPS 911

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Re: Cobra motor disassembly and rebuild
« Reply #140 on: January 05, 2016, 05:27:19 AM »
So Frank in the 10's : You are shooting for a SUPER GAS 9.90 bike $$$$$$$$  in 2016.  Does MAN CUP have a S/G CLASS  ?????   That 9.90 could get you another record in S/E class and on a 750 based SOHC them 2cyl. racers would be having their work cut out to take you down.

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #141 on: January 05, 2016, 06:30:19 AM »
Well not so fast young man.....there'll be another rider in the other lane!  ;D, Bill  And z other rider,me aka Grandma, might just turn into " the little old lady from Pasadena " !! LMAO, 2016 sho going be fun! Look what Frank made me do now!
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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See our latest build 'Captain Marvel' CLICK HERE

Offline gschuld

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Re: Cobra motor disassembly and rebuild
« Reply #142 on: January 05, 2016, 07:11:41 AM »
Fancy looking front end Billy.  Make sure that stuff is polished enough to blend people.  Any idea what the weight difference is between a stock cb750 front end and your Ceriani fork front end?

What's the plan with the RC swingarm?  You were going with a 12" over swingarm for 2016 on Cobra girl right?  The RC is 6" correct?

George

Offline dragracer

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Re: Cobra motor disassembly and rebuild
« Reply #143 on: January 05, 2016, 07:23:43 AM »
So Frank in the 10's : You are shooting for a SUPER GAS 9.90 bike $$$$$$$$  in 2016.  Does MAN CUP have a S/G CLASS  ?????   That 9.90 could get you another record in S/E class and on a 750 based SOHC them 2cyl. racers would be having their work cut out to take you down.

No Pops,
No shooting for the 9's. Just blowing smoke. I've done my thing, got my name on the books. Time for Billy Bling, Bling and a few others to step up in S/E. I set the bar, and not a very high one, for them to jump. Shouldn't be too hard with the right rider and properly prepared bike.  I'm still focused on an event win in street et. That's all. You are right, no more 9.90 index class. Not only that, why spend tons of money on an Sohc bike to go fast in 2016 when it'll still be the slowest bike out there. I'm living in the present, not the past. Got any KZ or Busa parts for sale??

Offline BPellerine

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Re: Cobra motor disassembly and rebuild
« Reply #144 on: January 05, 2016, 01:07:04 PM »
Yes to 26 and to arm pivots!!! K, Bill
are those the rc rods without the small end bush or big bolts?billp
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Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #145 on: January 05, 2016, 01:45:17 PM »
No, the rods are std CB1100F 1983. But, I'm checking on Carrillo's for a CB1100F now. I want as long a rod as feasible. I believe it's 1.5mm longer. 17 mm pin though, 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 dragracer

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Re: Cobra motor disassembly and rebuild
« Reply #146 on: January 05, 2016, 02:03:25 PM »
The good thing is you can have a bushing put into those rods so a 15mm pin fits to allow the use of your massive stocks of CB pistons in various diameter. I intend to use them because my current plan calls for the use of Kawasaki pistons under the 410 head. Kaw pistons have 17mm pins.

Offline BPellerine

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Re: Cobra motor disassembly and rebuild
« Reply #147 on: January 05, 2016, 05:05:50 PM »
again I got lost!haha you got so many things going on!!billp
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Offline POPS 911

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Re: Cobra motor disassembly and rebuild
« Reply #148 on: January 06, 2016, 04:40:32 AM »
The local HONDA EXPERT  [ Lancaster, Ohio shop ] that had a shop full of machines to tinker with for years always said to me those 900cc motors with 15mm pins are the weak spot to blow up you motor and cost money = he ran in that SUPER GAS class 9.90 for many years with 17mm pins and his site name on DRAGBIKE.COM is SONICRETE . He knows more information about drag racing motorcycles then anyone I have ever talked too...... his dad had him working in their machine shop when he was a small kid, knows a lot about making chips fly and smooth surfaces.

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #149 on: January 06, 2016, 06:35:37 PM »
Lol, I did sumpin right!  This front PM caliper is well....cute!  ;D Scored on ebay for $112.00 shipped, he sent me back $5.00, said shipping was less than expected! Now, that's a good seller! K. Bill
« Last Edit: January 06, 2016, 06:37:59 PM by Bill/BentON Racing »
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.
______________________________________
See our latest build 'Captain Marvel' CLICK HERE