Author Topic: Cobra motor disassembly and rebuild  (Read 107678 times)

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Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #250 on: February 20, 2016, 07:27:26 PM »
Full speed ahead, as Russ would say,"Run It" !! Gotta still clean off the RC logo! Much better than this time yesterday!
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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 NalleyRacing

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Re: Cobra motor disassembly and rebuild
« Reply #251 on: February 21, 2016, 01:41:20 AM »
I bet you get up to go to the bathroom in the middle of the night and trip over an RC big block.. Dang man.. How many of those thangs you got layin around over there?? ;D 8) ;)

And is that red wrinkle? Totally thought this was the red one you had on the stove a few months back
« Last Edit: February 21, 2016, 09:26:15 AM by NalleyRacing »

Offline gschuld

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Re: Cobra motor disassembly and rebuild
« Reply #252 on: February 21, 2016, 04:50:15 AM »
When goin' into battle, wear red.  Never let them see you bleed. ;)

George

Offline Restoration Fan

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Re: Cobra motor disassembly and rebuild
« Reply #253 on: February 21, 2016, 05:52:35 AM »
Jimmy,  I'll need you to tell me that in person! Lol, you home this weekend?  Hope so, cause I don't see RC selling a block that looks cracked! I'll bring that puppy with me and my red one to compare,  let me know , thanks, Bill
LOL, that's what I was going to recommend, Bill.  I was going to say, "Take it Jim French and see what he thinks."
Ron

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Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #254 on: February 21, 2016, 09:13:26 AM »
Oh had I not fixed it, etc, Jim's where I'd been off to!  The man knows his stuff!
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 BPellerine

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Re: Cobra motor disassembly and rebuild
« Reply #255 on: February 21, 2016, 03:57:58 PM »
this gonna be the little red rooster??haha.billp
1978 CB 750K ard and webers
another anfob

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #256 on: February 21, 2016, 08:27:42 PM »
Maybe ! Lol. Getting there! ;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 calj737

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Re: Cobra motor disassembly and rebuild
« Reply #257 on: February 22, 2016, 02:18:24 AM »
this gonna be the little red rooster??haha.billp
He certainly seems to be feeling a bit cocky with all that RC goodness lurking  ;)
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #258 on: February 22, 2016, 06:04:11 AM »
LMAO, one day I may resemble that remark!! ;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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Offline POPS 911

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Re: Cobra motor disassembly and rebuild
« Reply #259 on: February 24, 2016, 05:45:18 AM »
Bill MWS : I need a gallon of that RED CRINKLE PAINT did you make it or buy it ??????

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #260 on: February 24, 2016, 10:31:09 AM »
POP'S,  it's VHT Red Wrinkle!  Only in aerosol  in stores, but contact VHT for a gallon maybe. Part number SP904.
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

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Re: Cobra motor disassembly and rebuild
« Reply #261 on: February 24, 2016, 05:23:35 PM »
The fun part!
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

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Re: Cobra motor disassembly and rebuild
« Reply #262 on: February 24, 2016, 06:09:55 PM »
We good, .002 or a little tighter. K.
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.
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See our latest build 'Captain Marvel' CLICK HERE

Offline TurboD

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Re: Cobra motor disassembly and rebuild
« Reply #263 on: February 24, 2016, 06:46:24 PM »
Bill where are you getting your bearings?

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #264 on: February 24, 2016, 08:31:58 PM »
Honda. They superseded to the same mains as the DOHC 4's, 425 middle part number.  A green main is 13317-425-003,  the rod bearings superseded to the 400 T rod bearings,  413 midle part number. Just  ordered 16 green mains on Monday and picked  them up Tuesday!  Must of been in the Atlanta warehouse. K, Bill
« Last Edit: February 24, 2016, 08:35:02 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 Jerry Rxman Griffin aka MuthaF'er

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Re: Cobra motor disassembly and rebuild
« Reply #265 on: February 25, 2016, 09:56:13 AM »
Check Yamiya for prices.  ;)  Shipping reasonable and USUALLY quicker than ordering locally.
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: Cobra motor disassembly and rebuild
« Reply #266 on: February 25, 2016, 10:36:50 AM »
Check Yamiya for prices.  ;)  Shipping reasonable and USUALLY quicker than ordering locally.
The yen is in the tank.....I just ordered from them last night.
Owner of the "Million Dollar CB"

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #267 on: February 25, 2016, 10:46:56 AM »
How much you pay for them?
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 PeWe

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Re: Cobra motor disassembly and rebuild
« Reply #268 on: February 25, 2016, 11:26:02 AM »
David Silver has too. Brown is temp out of stock. Pound is going cheaper too...
The green shells I ordered from CMSNL 2012 have 3 holes in each shell. Improvement to store oil or shells for another engine? My old have only the center hole.
« Last Edit: February 25, 2016, 01:15:41 PM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline MRieck

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Re: Cobra motor disassembly and rebuild
« Reply #269 on: February 25, 2016, 11:55:20 AM »
How much you pay for them?
I ordered a heavy duty cam chain and primary sprocket bearing Bill
I have dozens of 750 main /rod bearings on hand.....could probably build 5 engines.
Owner of the "Million Dollar CB"

Offline Bill/BentON Racing

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Re: Cobra motor disassembly and rebuild
« Reply #270 on: February 25, 2016, 02:20:04 PM »
The 2 holes were added for the DOHC 4's.
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 Jerry Rxman Griffin aka MuthaF'er

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Re: Cobra motor disassembly and rebuild
« Reply #271 on: February 25, 2016, 06:24:48 PM »
$9'ish?? 1,100 yen back on 6/09/2015. Multiply by 10 and add in some rod bearings while yer at it. Then throw in more goodies too  ;D Shipping real reasonable and quicker than US orders.

rods $6.62 and mains $9.93 currently.
« Last Edit: February 25, 2016, 06:26:44 PM by Jerry Rxman Griffin aka MuthaF'er »
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

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Re: Cobra motor disassembly and rebuild
« Reply #272 on: February 26, 2016, 04:56:30 AM »
Well, drop me off 8 green's!! ;D, 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 Jerry Rxman Griffin aka MuthaF'er

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Re: Cobra motor disassembly and rebuild
« Reply #273 on: February 26, 2016, 01:50:30 PM »
I have a special courier heading (let's clarify that) FLYING your way next Wednesday if you need something PARTS-WISE.
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

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Re: Cobra motor disassembly and rebuild
« Reply #274 on: February 26, 2016, 03:33:57 PM »
My bud delivered this morning!  Thanks though.
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