HONDA CB750 CAMSHAFTS & RELATED

 


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If you're in need of tech help, refer to our camshaft tech tips page.
 

Honda SOHC High Performance Camshaft Details
 Camshafts always raise a lot of questions: What kind of performance do you expect? What kind of top end power do you expect?
What kind of riding do you do? What kind of valve relief do your pistons have?
Below are some camshaft profiles you will enjoy without the headaches that monster cams can produce without background and experience behind you.

(Click pics above for an expanded view)

Here is the problem...

With our Honda CB750 camshafts and more to come, camshaft installation knowledge would be helpful to your machine shop and to the customer knowing what to buy. 

For example: Unless a "drop-in" camshaft is being installed. The machine shop or cylinder head assembler will need to know which camshaft is being used. Some of the most common heartbreak stories we hear from the public is that a customer had their head ported with oversize valves and all the latest, greatest parts and the valves collided because the the camshaft was chosen lastly. With most "big boy" camshafts, valve to valve clearance and also valve guide seal to top spring retainer clearances are very important but are taken for granted occasionally and a catastrophic situation occurs. The Cycle X high-lift valve guides prevent the top spring retainer from hitting and the valve guide seal from falling inside the keeper groove area of the valve stem and cause potential oil usage. We don't want to get long winded about the well documented procedures with cam clearances and installation procedures. So, here is what we are doing...

  • All of our camshafts will now have valve to valve clearances with stock size valves.
  • All valve to valve clearances with oversize valves with all the cams and how far to sink the valves.
  • All camshafts that will require "high-lift" valve guides.
  • Installed heights and spring pressures for those heights.
  • This knowledge will allow you to change camshafts for performance desires without possibly doing all the mathematics again.
  • This knowledge will allow you to keep the sinking of the valves to a minimum and losing precious flow numbers.

 

 


Early Cam Oilers

Early style Honda cb750 sohc camshaft oilers (new)

There are many nicely ported early Honda cb750 cylinder heads still around from the olden days.

Unfortunately, most of the camshaft oilers are stuck in the heads and sometimes need to be drilled when the old tricks-of-the-trades do not work to remove them.

Not exactly breaking news .... but, introducing our alloy early cam oilers and "O" ring combos.

.040 oiling hole.
$ 42.00 Per pair
 

 

 

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SPECIALTY CAMSHAFTS

 


 

CX-1 
Drop-in Camshaft

No valve to valve or valve to piston checking needed.

Broad power range. This cam will bolt right in stock engines. You will notice good power increase with this one. This camshaft profile was used on tight road-race tracks. You will like it. Made for Cycle X by Web Cam. Equivalent to their 41 Cam.

INSTALLATION INFORMATION

ENGINE:  Honda CB750 F (75-76); CB750 F 77-78) CB750 K (69-78) SOHC 8V

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.004"

.005"

VALVE LIFT (INCH):

0.340

0.340

DURATION @ .0.050":

229°

229°

LOBE CENTER:

103°

103°
 

INTAKE OPENS     11.5°     BEFORE TDC

EXHAUST OPENS     37.5°     BEFORE BDC

INTAKE CLOSES     37.5°     AFTER BDC

EXHAUST CLOSES     11.5°     AFTER TDC

NOTE: This camshaft is considered a drop-in or a bolt-in grind.

Valve to valve, Valve to piston, Valve drop at TDC and all the other performance checks and procedures are generally not needed.

"Generally" not needed?

Well, if someone has milled the head or cylinder, used bigger intake and exhaust valves, used stock pistons, used thinner gaskets and such, checking will be needed.
 $ 399.00

 

CX-2

INSTALLATION INFORMATION

ENGINE:  Honda CB750 F2 (75-78) SOHC 8v  ;  CB750 K (69-78) SOHC 8V

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.004"

.005"

VALVE LIFT (INCH):

0.340

0.340

DURATION @ .0.050":

235°

236.5°

LOBE CENTER:

103.5°

104.25°
 

INTAKE OPENS     14°     BEFORE TDC

EXHAUST OPENS     42.5°     BEFORE BDC

INTAKE CLOSES     41°     AFTER BDC

EXHAUST CLOSES     14°     AFTER TDC

$ 399.00
TEMPORARILY OUT OF STOCK

 


SX-1 
We are proud to reintroduce the SX-1 to our variety of  camshafts.
This camshaft has been known to run low 12 second 1/4 mile times and a winner on short or medium road race tracks.
With its "not to big not to small" numbers it is right at home on the street or touring applications.
One of the best ... Well rounded camshafts in our inventory.
Intake .358" /  248 duration.
Exhaust 350" / 258 duration.
Overall lobe center is 107.5
Note:
Best performance for most applications ... Set to 105.5 intake lobe center.

$ 399.00
TEMPORARILY OUT OF STOCK


 

CX-3

Here is a great cam for your 836cc hot street motor. Springs, big bore kit will be needed to utilize this cams potential. Made for Cycle X by Web Cam. Equivalent to a 63A.

INSTALLATION INFORMATION

ENGINE:  Honda CB750 F (75-76); CB750 K (69-78) SOHC 8V

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.004"

.005"

VALVE LIFT (INCH):

0.355

0.355

DURATION @ .0.050":

251°

250°

LOBE CENTER:

98°

99°*

* = 98.5° overall
 

INTAKE OPENS     27.5°     BEFORE TDC

EXHAUST OPENS     44°     BEFORE BDC

INTAKE CLOSES     43.5°     AFTER BDC

EXHAUST CLOSES     26°     AFTER TDC

VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050 INCHES OF VALVE LIFT.
$ 399.00
 TEMPORARILY OUT OF STOCK

 

 

KHCX1

No valve to valve or valve to piston checking needed.

Kenny Harman "D" grind. OK with stock pistons. Use HD springs. Mid-range and some top-end.
Longer exhaust duration allows for cooler combustion chambers.

INSTALLATION INFORMATION

ENGINE:  Honda CB750 F (75-76); CB750 F (77-78)  CB750 K (69-78) SOHC 8V

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.004"

.005"

VALVE LIFT (INCH):

0.344

0.330

DURATION @ .0.050":

249°

267.5°

LOBE CENTER:

108.5°

108°
 

INTAKE OPENS     16°     BEFORE TDC

EXHAUST OPENS     61.75°     BEFORE BDC

INTAKE CLOSES     53°     AFTER BDC

EXHAUST CLOSES     25.75°     AFTER TDC
   

TEMPORARILY OUT OF STOCK
 

CX-5

Upper midrange and top end camshaft. Use with big-bore, exhaust system and 12 plus compression ratio pistons.

INSTALLATION INFORMATION

ENGINE:  Honda CB750 F2 (75-76); CB750 K (69-78) SOHC 8V

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.004"

.005"

VALVE LIFT (INCH):

0.350

0.350

DURATION @ .0.050":

273°

273°

LOBE CENTER:

99°

99°
 

INTAKE OPENS     37.5°     BEFORE TDC

EXHAUST OPENS     55.5°     BEFORE BDC

INTAKE CLOSES     55.5°     AFTER BDC

EXHAUST CLOSES     37.5°     AFTER TDC

VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050 INCHES OF VALVE LIFT.

$ 399.00


 

XXX-4
This camshaft is for drag race applications.
This is the biggest, baddest camshaft for Honda cb750 ever made.
Extensive head work will be needed and all clearances be checked.
Designed by Kenny Harman and used by some of the fastest Hondas in the olden days.

 This camshaft is bigger than billets will allow us to go. Therefore, they are only offered in hardweld only.

INSTALLATION INFORMATION

ENGINE:  Honda CB750 F (75-76); CB750 K (69-78) SOHC 8v - Special Base Circle

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.006" - .008"

.008" - .010"

VALVE LIFT (INCH):

0.457

0.457

DURATION:

287°

291°

LOBE CENTER:

108.5°

107.5°
 

INTAKE OPENS     35°     BEFORE TDC

EXHAUST OPENS     73°     BEFORE BDC

INTAKE CLOSES     72°     AFTER BDC

EXHAUST CLOSES     38°     AFTER TDC

VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050 INCHES OF VALVE LIFT.
NOTES:
We will not be able to give any opinions or data for installing this XXX-4 in a Honda CB750 SOHC head. The camshaft is so big, a special head will need to be built especially for this camshaft.

$ 399.00   


 

CX-7
 Similar to the Mega Cycle 125-75 but with 3 more degrees of duration. We found this cam to work well with 915cc kits and above.

INSTALLATION INFORMATION

ENGINE:  Honda CB750 F2 (75-78); Honda CB750K (69-78) SOHC 8V

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.004"

.005"

VALVE LIFT (INCH):

0.395

0.366

DURATION @ .0.050":

258°

252°

LOBE CENTER:

104.5°

106°
 

INTAKE OPENS     24.5°     BEFORE TDC

EXHAUST OPENS     52°     BEFORE BDC

INTAKE CLOSES     53.5°     AFTER BDC

EXHAUST CLOSES     20°     AFTER TDC

VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050 INCHES OF VALVE LIFT.

$ 399.00

 

CX-9

INSTALLATION INFORMATION

ENGINE:  Honda CB750 F2 (75-76); CB750 K (69-78) SOHC 8V

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.004"

.005"

VALVE LIFT (INCH):

0.380

0.328

DURATION @ .0.050":

259.5°

268°

LOBE CENTER:

108.5°

105°

* = 98.5° overall
 

INTAKE OPENS     21.25°     BEFORE TDC

EXHAUST OPENS     59°     BEFORE BDC

INTAKE CLOSES     58.25°     AFTER BDC

EXHAUST CLOSES     29°     AFTER TDC

VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050 INCHES OF VALVE LIFT.
$ 399.00
TEMPORARILY OUT OF STOCK


 

CX-10

This camshaft is one of our favorites for 890cc and bigger Honda CB750 race bikes. (12+ comp ratio or more)
This camshaft is perfect for road race or drag race applications.
Very similar to the Mega-cycle 125-X12, but with a 112 lobe center.

INSTALLATION INFORMATION

ENGINE:  Honda CB750F2 (75-78); CB750K (69-78) SOHC 8v

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.004"

.005"

VALVE LIFT (INCH):

0.420

0.430

DURATION:

258.5°

261°

LOBE CENTER:

109.75°

115.5°
 

INTAKE OPENS     19.5°     BEFORE TDC

EXHAUST OPENS     66°     BEFORE BDC

INTAKE CLOSES     59°     AFTER BDC

EXHAUST CLOSES     15°     AFTER TDC

VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050 INCHES OF VALVE LIFT.

  $ 399.00


 

CX-11

This camshaft profile is one of the hardest hitting mid-range and excellent top-end camshafts designed for Honda CB750's.
Works great with 65mm bores and larger.
Higher compression ratios are recommended.
You vintage road racing people should try this cam!
 

INSTALLATION INFORMATION

ENGINE:  Honda CB750 F2 (75-76); CB750 K (69-78) SOHC

 
 

Intake

  

Exhaust

  

Valve Lash (Inch):

.004"

.005"

 

Valve Lift (Inch):

0.385

0.329

  

Valve Lift (mm):

9.78

8.38

  
       

Duration @ 0.050":

256°

265°

  

Lobe Center:

109°

110°

= 109.5° Overall

Intake
Opens

19°

Before
TDC

  

Exhaust
Opens

62.5°

Before
BDC

Intake
Closes

57°

After
BDC

  

Exhaust
Closes

22.5°

After
TDC

Valve Timing Is Checked With Zero Valve Lash
@ 0.050 Inches Of Valve Lift.

$ 399.00 
TEMPORARILY OUT OF STOCK

 

 

CX-12-84

These camshafts have a huge following with the Honda high performance world. Check out the specifications and you will see this cam is serious stuff. We love this cam on our big bore sleeper motors!

Limited supply!

INSTALLATION INFORMATION

ENGINE:  Honda CB750 F2 (75-78); CB750 K (69-78) SOHC 8V

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.005"

.006"

VALVE LIFT (INCH):

0.430

0.430
DURATION: 292° 292°

DURATION @ .0.050":

270°

270°

LOBE CENTER:

108°

110°
 

INTAKE OPENS     27°     BEFORE TDC

EXHAUST OPENS     65°     BEFORE BDC

INTAKE CLOSES     63°     AFTER BDC

EXHAUST CLOSES     25°     AFTER TDC

VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050 INCHES OF VALVE LIFT.

TEMPORARILY OUT OF STOCK
 
 
 
 
 
 

OTHER CAMSHAFTS


Camshafts for sale.
Most of these camshafts are like new or pre-owned and were generally used for checking valve sinking, lifts, durations, valve to valve,
 imperfect rocker arm ratios, lobe centers and such.
They do not come in the original boxes so they are considered almost new.
 
 CLICK HERE:  FOR INFO ON DEGREEING AND CAM INSTALLATION
 

 

 


KENNY HARMON KHF
SEE OUR CX-11 CAMSHAFT ABOVE FOR SPECS.
$ 299.00

 


MEGA CYCLE 125X12
SEE MEGA CYCLES WEBSITE  FOR SPECS.
$ 429.00

 

 

WEBCAM GRIND 63B

ENGINE:  Honda CB750 SOHC

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.004"

.004"

VALVE LIFT (INCH):

0.370

0.370

DURATION @ .0.050":

310°

310°

LOBE CENTER:

103°

103°

* = 98.5° overall
 

INTAKE OPENS     52°     BEFORE TDC

EXHAUST OPENS     78°     BEFORE BDC

INTAKE CLOSES     78°     AFTER BDC

EXHAUST CLOSES     52°     AFTER TDC

VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.010 INCHES OF VALVE LIFT.
$ 349.00

 

 
 
 

WEBCAM GRIND # 88
 

ENGINE:  Honda CB750 SOHC

 

INTAKE

EXHAUST

VALVE LASH (INCH):

.004"

.005"

VALVE LIFT (INCH):

0.390

0.390

DURATION @ .0.050":

390°

390°

LOBE CENTER:

 

 
 

INTAKE OPENS     25°     BEFORE TDC

EXHAUST OPENS     55°     BEFORE BDC

INTAKE CLOSES     55°     AFTER BDC

EXHAUST CLOSES     25°     AFTER TDC

VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050 INCHES OF VALVE LIFT.
$ 399.00

 

 
 
 

ADDITIONAL CAM PARTS

 

 


 

OEM Adjustable Camshaft Sprocket Combo

Our adjustable camshaft sprocket also comes with a set of shouldered bolts to compliment.

Note: These shouldered bolts are a great upgrade and a little insurance that the camshaft bolts do not move or slip when using higher spring pressures.
The shank area of these bolts can be a slightly bigger than the OEM bolt (about .010 only in most cases), so make sure the bolts fit nicely into the sprocket of your choice and camshaft of your choice before final tightening and torque is applied. $ 59.95

 


 

 

 



Refurbished adjustable camshaft sprocket and shoulder bolt combo.
A must for performance and stock Honda cb750 camshafts.

The problem:
Performance cams should be degreed.
Cam chains stretch.
Cam chain tensioners wear a bit.
Gaskets are different thicknesses.
Milling or surfacing effects timing mark alignments.

The cure:
With an adjustable cam chain sprocket you can line-up cam timing marks to your cam spec's or adjust to the factory manual specs again.

Precisely slotted cam sprocket bolt holes.
Shouldered bolts.
 Sale Price $ 29.99

 

 

 

 

Cryo Info
 These chains have gone through our cryogenic treatment, which involves taking the chains down to temperatures of minus 300 degrees Fahrenheit. What this does is rearranges the molecular structure of the item being treated, making them more uniform and evenly spread. Why is this good? Well, after this process is complete the item treated has increased tensile strength and resistance to wear.

In other words it makes stuff stronger and last longer!

“I used to have to adjust my Yamaha motorcycle chain after the first run because it would stretch. After cryo-treatment, the chains don't stretch at all, and the treatment also keeps cam chains from breaking. I haven't broken a chain since I started cryo-treating all of my parts.”
- Customer of Cryotreament

 

Cryogenically Treated Tsubaki
Cam Chains

Tsubaki cam chains have been known to be the best for decades.
Tsubaki has discontinued making these chains and many engine builders were freaking out. Well, no need to panic. We have a limited supply of these chains. 

These Tsubaki cam chains have been the best available for years and years, now that they have been Cryogenically treated with this proven process, they are truly the best available.
No stretching, no resetting cam timing, and there has never been a reported failure even without the cryo treatments.

A Cycle X exclusive product!
 ENG-TSUBAKICRYO     $113.95

 


 

You will need these cam chain tensioners parts so your Honda SOHC does not sound like a wash machine.
These are Factory Replacements direct from Honda. OEM.

Cam Chain Roller

ENV-001    $24.95


 

Cam Chain Roller Assembly

ENV-002    $129.00
 

Cam Chain Slider

ENV-003    $25.00
 


 

 
 OEM Cam Chain Slider, Assembly & Roller With Cryo Treated Cam Chain Combo
 Slider # 14611-300-000, Assembly # 14500-300-00, Roller # 14601-312-000
 $ 285.00    # ENV-222

 

 

                 

               Cycle X Cam Chain Tensioner # TNS-007                                   Cryo Treated Cam Chains # TNS-008                                        Combo Cam Chain Tensioner & Cryo Chains # TNS-009


 CycleX cam chain "slipper" racing tensioner.
These full floating self adjusting tensioners are race proven and feature the indestructible PA-46 material.
Extensive machine work and testing have been performed to make these tensioners a must in the racing world.
 ENG-108     $389.00

Tsubaki Cryo treated cam chains (the best)
Tsubaki have always been known to be the best cam chains ever made.
With the addition of Cryo treatments to add approx. 4 to 6 times the toughness and longevity ..... its the only choice for cam chains.
Straight side plates are perfect for all types of "slipper" tensioners.
#TNS-008 $113.25
 
CycleX Cam Chain Tensioner and chain combos.
Race proven cam chain products at a combo price.
#TNS-009 $465.00


CYCLE X CAM CHAIN TENSIONER ONLY
$ 389.00    # ENG-108
 

 CRYO TREATED CAM CHAIN ONLY
$ 113.25    # TNS-008
 COMBO CAM CHAIN TENSIONER
 & CRYO CAM CHAIN
$ 465.00     # TNS-009

 

 

 

 

Random Pictures Of Cam Chain & Primary Chain Development Below:

              

             

               

 

          

 

                    

Note: We were disassembling 24 cam chain tensioners and every factory rubber wheel was bad.

 

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A 3.99% customer service charge is applied to all phone orders.

It is the sole and exclusive responsibility of the purchaser to determine the suitability of any part, product or work for his or her use.
The purchaser shall assume all legal, personal injury risk and liability and all other obligations, duties and risks therewith. There is no warranty on High Performance products.

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Cycle X Global Headquarters

6246 US Hwy 51 South

Hazelhurst, WI 54531

Phone: 715-356-7346

Email: hotrodcyclex@gmail.com