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Cam Chain Tensioners...Here is the Problem!
The above photos show an OEM Honda tensioner and an unidentified aftermarket tensioner. These photos were from an AHRMA vintage roadracer's bike (thanks Matt Esterline #237) and clearly show the problem. The OEM tensioner lasted approx. 3 weekend races and the aftermarket tensioner approx. 10 weekend races. These types of product malfunctions are exaggerated when racing is involved, but racing makes for a good test because these results happen in street bikes as well.
Note: Matt's bike is using an OEM stock cam chain tensioner rather than a manual tensioner that has been overadjusted.
Original Press Release (Just a reminder.)
These cam chain tensioners are
designed to float and compensate for milled heads, thinner gaskets,
worn/stretched cam chains and hard deceleration which destroys OEM
tensioners. The
arrows show how the sliders can move a few degrees to compensate for the
above mentioned problems.
Features:
| ✓ Proven
XPA 46 slider material. ✓ Floating/compensating design. ✓ No more than four chain links unsupported. ✓ Front slider is longer with a gentle curve. ✓ Stock length cam chains, peanut or straight side plates are fine. |
Note: Fixed slider designs shift the pressure points upward and only make contact at the very top when thinner gaskets, milling and stretched chains.
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This was designed with a combination of 3D imaging, motor cut-a-ways and proven XPA-46 materials, no expense was spared. This floating/self compensating design and highly accurate machining processes surely makes this a candidate for product of the decade (we like saying that).
NOTE: ITEM IS NO LONGER AS PICTURED. NOW COMES WITH A STOCK SLIPPER
ENG-108 $349.00
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Cryogenically
Treated Tsubaki 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 $113.25
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Most performance camshafts are considered to be a horsepower, torque and acceleration upgrade depending which camshaft is selected. These CX-11 and Hellcat #84 camshafts are two of the best and most powerful grinds on the market.
In stock!
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This camshaft
profile is one of the hardest hitting mid-range and excellent
top-end camshafts designed for Honda CB750's. INSTALLATION INFORMATION ENGINE: Honda
CB750 F2 (75-76); CB750 K (69-78) SOHC 8v
INTAKE
EXHAUST
VALVE LASH
(INCH):
.005"
.005"
VALVE LIFT
(INCH):
0.385
0.330
DURATION @
.0.050": 264° 272°
LOBE
CENTER:
107°
110°
VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050 INCHES OF VALVE LIFT.
Additional tech info coming soon. CX-11 $314.00 |
This "Hellcat" camshaft is
the latest addition to our specialty performance camshaft options. ENGINE: Honda
CB750 F2 (75-78) SOHC 8V; Honda CB750K (69-78) SOHC 8V
VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050 INCHES OF VALVE LIFT.
OUT OF STOCK
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Solid One Piece Stainless Steel Hard Chrome Stem Valves
Check out the high performance solid, one
piece, stainless steel hard chrome valves.
Stellite
tipped and added machine swirl.
These valves are world
class quality and comes at a sale price that cannot be
beat.
34mm intake.
33.5mm intake.
32mm intake. (stock "K" model size)
28mm exhaust.
Sold as a set or individually.
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32mm STD Size Stainless Steel This selection of "hard chrome" valves are endorsed and used by top engine builders for decades. These valves are designed and manufactured with the "preferred" 69-76 valve keeper groove. These valves will work in 77-78 K model heads by changing the keepers and top spring retainers from earlier 69-76 models.
ENV-32MM $24.99 per valve
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33.5mm 1.5 Oversize Stainless Steel Hard Chrome Intake Valves Check out the quantity discounts for sets of 8 valves.
Note:
ENV-335MM $24.99 per valve
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34mm 2mm Oversize Stainless Steel Hard Chrome Intake Valves
Quote: These valves are designed and manufactured with the "preferred" 69-76 valve keeper groove. These valves will work in 77-78 K model heads by changing the keepers and top spring retainers from earlier 69-76 models.
ENV-34MM $24.99 per valve
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28mm
Stainless Steel
TEMPORARILY OUT OF
STOCK
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Cryo Treated High Lift Cast Iron Valve Guides The testing is done and our test bike showed zero wear in 37,000 miles. We don't have time to see how long these cryo valve guides could actually last. Maybe forever! ENV-034 $168.00
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Black Diamond Intake Valve (STD.) All KPMI® Black Diamond™ stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond™” process improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Black Diamond™ Valves are lightweight, strong, one piece forgings with profiles that provide excellent flow characteristics.
Valve, Black Diamond™ Stainless, Std. IN, Honda®, CB™ 750 SOHC (Excluding F2™), 1969-1977 1 valve per quantity. 30-4186 $34.95 |
Black Diamond Intake Valve (+1.5mm) Oversize All KPMI® Black Diamond™ stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond™” process improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Black Diamond™ Valves are lightweight, strong, one piece forgings with profiles that provide excellent flow characteristics.
Valve, Black Diamond™ Stainless, +1.5mm O/S IN, Honda®, CB™ 750 SOHC (Excluding F2™), 1969-1977 1 valve per quantity. 30-4187 $49.95
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Black Diamond Exhaust Valve (STD.) All KPMI® Black Diamond™ stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond™” process improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Black Diamond™ Valves are lightweight, strong, one piece forgings with profiles that provide excellent flow characteristics.
Valve, Black Diamond™ Stainless, Std. EX, Honda®, CB™ 750 SOHC (Excluding F2™), 1969-1977 1 valve per quantity. 30-4188 $34.95
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Black Diamond Exhaust Valve (+0.5mm) Oversize All KPMI® Black Diamond™ stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond™” process improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Black Diamond™ Valves are lightweight, strong, one piece forgings with profiles that provide excellent flow characteristics.
Valve, Black Diamond™ Stainless, +0.5mm O/S EX, Honda®, CB™ 750 SOHC (Excluding F2™), 1969-1977 1 valve per quantity. 30-4189 $49.95
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Honda CB750 Super Gasket Set
(Race Proven)
"New Version"
Now featuring an oil filter, oil pump
stopper spring, pressure relief spring, oil stopper rubber and oil
filter "O" rings. (At no additional cost!)
Cycle X super gasket sets are a
premium quality cure for age old problems concerning chrome covers,
untrue surfaces, re-torquing
and the need to run to the hardware store
for miscellaneous "O" rings.
Cycle X was the first to put effort, expense and test these modern
gaskets on Honda cb750s.
Head Gaskets:
MLS head gaskets have been around for years. They feature great rebound
and are layered steel with a Viton coating.
Base Gaskets:
Steel with Viton coating.
Side Cover Gaskets:
Alloy with Foamet coating is the same combination used to stop old
Harleys from leaking.
Oil seals and every "O" ring in the motor that most kits do
not include.
Super Gasket Set Includes:
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MLS head gasket available in most bore sizes |
Base gasket available in .010 and .014 thickness |
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Valve cover gasket. (no leak alloy foamet coated) |
Dyno cover gasket (alloy foamet) |
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Trans cover gasket (alloy foamet) |
Clutch cover gasket (alloy foamet) |
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Sump cover gasket (alloy foamet) |
Cam chain gasket (alloy foamet) |
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Oil pump gasket (alloy foamet) |
(4) Cylinder liner "O" rings |
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(8) Valve inspection "O" rings |
(4) Oil feed "O" rings (inner intake cylinder studs) |
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(4) Cam tower "O" rings (under the cam towers) |
(2) Oil line "O" rings (oil lines bolt to the motor) |
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(3) Oil pump "O" rings (oil pump bolts to the case) |
(1) Case "O" ring (between case halves in the front) |
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(4) exhaust gaskets |
(6) nickel plugs (under the cam tower) |
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(8) valve seals |
(3) galley plug "O" rings (oil pressure gauge and galley plugs under the motor) |
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Oil seal set (69-76 with 77-78 counter-shaft seal optional) |
Points, starter and breather cover gaskets |
Note:
Specify STD, 836, 849, 915 or 1000cc for head MLS head gasket.
Cycle X super gasket kits are race proven and are the best money can buy.
ENG-001
$218.95 
Cycle X Race Team Approved
Honda CB750 Oil Seal
1977-78 Honda use this bigger seal around the counter shaft.
You will need this seal if you have a 77-78.
OL-006
$13.99
(Each)
CYCLE X BILLET HIGH PERFORMANCE TRANSMISSIONS
The highest level Honda CB750 SOHC products is our goal.
Our newest addition to the
highest level Honda CB750 products available are the race proven
complete Cycle X Racing transmissions.
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Nova "B" Transmission and Cycle X Chain Wheel and Hub Combo
These transmissions feature new splines (15
tooth), large unbreakable dogs, super polished and race proven.
These transmissions are for high horsepower applications or for
people that simply want the best products for their special
Honda CB750's.
The transmission also comes with the 4 bearings (mainshaft and
counter shaft) (Japanese bearings)
| 1st | 17 – 38 | 2.235:1 |
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| 2nd | 22 – 34 | 1.545:1 | |||||
| 3rd | 25 – 31 | 1.240:1 | |||||
| 4th | 31 – 33 | 1.065:1 | |||||
| 5th | 33 – 31 | 0.939:1 | |||||
| Overall reduction 1st – 5th | 58.0% | ||||||
The Cycle X Refurbished Chain Wheel and Outer Clutch Hub
We disassembled the cush drive and glass bead for inspection. The inner portion of the hub is drilled and tapped for screws to replace the long rivets installed by Honda to hold the drive together.
Before installing the new cush drive rubbers, we measure the amount of deflection or wobble the two sprockets have. Most hubs have different measurements. But, they generally deflect or wobble over 2mm measured by the outer tooth area, relying on the cush rubbers to keep things somewhat stable. With that said, we surface the outer plates and machine the inner portion to reduce this deflection and wobble.
Before we install the specific length and material cush drive rubbers, we
remove and install (2) new needle bearings on the inside.
This chain wheel and clutch combo has been refurbished as described above with inner clutch hub oiling modifications.
The chain wheel and clutch assembly combo is then balanced to absolute perfection. (1/2 gram, 1 in. from the center line)
ENL-032 $2999.00
Call to order. One (1) available.
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Under cutting:
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Honda cb750 sohc undercut
transmissions .... In stock. (early version) $549.00
RF-0012 |
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Honda cb750 sohc
.... 2nd, 3rd and 4th under-cut version used throughout Europe and
the world. |
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Transmissions Identification Early & Late
2nd Gear
4th Gear
3rd Gear |
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CARRILLO Connecting Rods We would like to welcome CARRILLO connecting rods to our lineup of hot rod Honda CB750 SOHC parts. These connecting rods are used by the top engine builders worldwide.
ENL-CCR
$1,499.00
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69mm Honda CB750 (69-78) SOHC
Stroker Crankshaft
This crankshaft has been freshly refurbished, Stroked to 69mm (63mm is stock), Micro polished, Balanced to perfection. Inspected and magnafluxed, increased stroke to 69mm, and dynamic balanced. Ion-plasma
nitrided, straightened, and micropolished all journals.
This chart
shows the displacement increases when using this 69mm
stroker crankshaft.
ENL-69MMSC $1,484.00 (Outright sale)
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%20SOHC%20Stroker%20Crankshaft%202.JPG)
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Dry Film Lubricated Rod and Main Bearings CT-1 is a Dry Film Lubricant coating that helps reduce friction and abrasive wear. It provides intermittent dry lubrication and is not affected by dust or dirt. CT-1 is specifically engineered to withstand the extreme conditions of today's high performance engines. Professional engine builders enjoy a higher level of confidence with increased embedability, strength and durability. CT-1 Dry Film Lubricant coating is applied as a spray process. Different surface preparation methods appropriate for the substrates will be used prior to the coating process. Coating thickness is varied to suit the application. Typical coating thickness for engine bearings is 0.00025" to 0.00030" inch (6 to 7.5 microns). Temp. Rating:
Thickness: Stories are more fun! A top level pro-mod drag racer was having connecting rod bearings failures every run down the drag strip years ago, the con-rod bearings were flattened out and were clearly junk. The distraught drag racer happened to reach out to our coating people for answers. Our people provided the pro-mod racer with a set of "dry film" connecting rod bearings and the machine ran more than 12 runs that weekend with virtually no signs of wear. True story! Note:
ENL-017
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Honda CB750 Stroker Piston Sets These 70mm diameter stroker
piston kits are designed for 69mm or 70mm crankshafts (63mm is stock) and
result in a 1060cc plus displacement. We feel the best way to build a big
bore stroker motor is to move the wrist pin holes rather than use shorter
connecting rods or spacer plates like people used in the 70's era. These
world class pistons are 170 grams (bare weight) and feature our race proven
Cycle X domes.
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Cylinder Sleeves for 836, 849 & 900cc Bore Kits Even though 836 big bore kits have been around for years, some people believe that the wall thickness is thin. So, many people install these sleeves to regain wall thickness. These sleeves will be needed when increasing bore sizes larger than 65mm (836cc) up to 67.5mm. Outside diam. is 2.916 inches (74mm) The bottom of the sleeve is tapered down 2.752 (69.9mm) to allow the sleeves to fit inside of the upper case without bore the upper case larger. Inside diameter is 2.522 (64.07mm)These sleeves have been the choice of engine builders for decades because of their dense long lasting cast iron materials. Most machinists can hear the difference when boring the cylinders and feel the toughness/denseness when honing them. World class, race proven, and a price that is impossible to beat. Note: Sometimes the upper cases have casting flash or casting protrusions which will need to be removed. Note: Cylinder block will need to be bored for these sleeves. Cycle X cast iron sleeves are the best in the industry.
836-849-900-SLEEVES $219.00 (set of 4)
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Big Bore Sleeves These sleeves have been the choice of engine builders for decades because of their dense long lasting cast iron materials. Most machinists can hear the difference when boring the cylinders and feel the toughness/denseness when honing them. World class, race proven and a price that is impossible to beat. Note: Cylinder block and upper case boring required.
Cycle X cast iron sleeves are the best in the industry.
BIGBORE-SLEEVES $219.00 |
