Author Topic: Best place for the bang for your buck for cb500 four engine kit  (Read 1843 times)

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Offline Dos

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Hello all,

I'm tearing down the top end of the motor, cleaning everything, and putting it back together.

Where should I go to get a good prices gasket set, o ring, rubbers, etc?

Offline flybox1

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #1 on: June 08, 2015, 11:18:38 AM »
Hello all,I'm tearing down the top end of the motor, cleaning everything, and putting it back together.
Why?
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Dos

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #2 on: June 08, 2015, 11:28:27 AM »
Engine has been sitting for 30 years. intake and muffler's have a lot of crap in there.. Internals are great but it really does need a clean up..

This is the new set I am thinking about getting:

http://4into1.com/vesrah-top-end-gasket-set-vg-555-honda-cb500-cb550/

Offline flybox1

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #3 on: June 08, 2015, 11:54:41 AM »
is the engine seized?
does it smoke (black/blue)?
does it leak oil?
if your answer is NO to any of these, i'd leave it alone.
once you open it up, the 'cheap' fixes will become expensive 'replacements/upgrades' and seem never ending  ::)
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Dos

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #4 on: June 08, 2015, 02:25:03 PM »
Okay.

what about the best bang for your buck cb500 four engine gasket set?

Offline flybox1

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #5 on: June 08, 2015, 02:33:23 PM »
I've had good luck with Vesrah brand.
Others will swear by OEM HONDA gaskets, only. 
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Dos

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #6 on: June 08, 2015, 06:59:46 PM »
about the engine being seized... well I took the top end off to reveal the cam chain and cam sprocket.. I went to take the chain off and it is TIGHT, i can barely wiggle it off. In other demonstration videos I have seen people take it off no problem.. I have loosened the tensioner all the way.

I thought well it should be in neutral right?

I clicked up and down and couldn't find neutral and it clicks up i would say 3-4 times and it's a 5 gear so I dont know what's up.. when i was younger i would play on it and kick it and it would cycle through but now it's just stuck.

I don't know what to do.

Offline Dos

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #7 on: June 08, 2015, 09:21:24 PM »
How do you know when its in neutral.. I know noob question.

The cam will not rotate and neither will the bolt under the points cover


Offline Don R

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #8 on: June 08, 2015, 09:27:05 PM »
 So the engine is seized? If so remove the plugs and lube the cylinders with your favorite brand of penetrating oil. I'm assuming it is out of the bike?
No matter how many times you paint over a shadow, it's still there.
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Offline Dos

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #9 on: June 09, 2015, 07:12:18 AM »
The engine is out. I'll use the other side.
The drive sprocket is off.
I click it all the way down and when I pull up it takes a lot of force and seems to go right into 2nd.. Not sure can't really find neutral. I'll try at it again now

Offline flybox1

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #10 on: June 09, 2015, 07:26:56 AM »
shift while rotating the front sprocket.
if your shifter cover is off, it should be easy to see.
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Dos

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #11 on: June 09, 2015, 08:08:32 AM »
Yeah totally. I will test everything out and get back to you guys later tonight..
Engine is out of frame sitting on a table btw

Online PeWe

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #12 on: June 09, 2015, 11:27:32 AM »
My bike had been sitting in a not heated barn for 20 years. Valve seats corroded and need of fresh cut. I was too focused on pistons with bores the years after parking. I should have sprayed thin oil thru the spark plug holes, rotated the engine letting oil to cover all seats when parked. Redone the procedure every 5 years or so. I knew that the engine was in need to be restored since I knew how the tensioners will do when rubber is old and hard like bakelite.
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 Dos

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Re: Best place for the bang for your buck for cb500 four engine kit
« Reply #13 on: June 10, 2015, 04:32:56 AM »
Haven't had to much time but it clicks down 3 times and up 3 times. I'm waiting for the pb blaster to get out these stripped screws on the stator cover