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‑A3‑

Nov./29/ 12

Use of Lightweight Outer Rotor ACG

SS-outer rotor is equipped as standard .Rotor body is a compact design and it weighs 536g.  The best ignition

timing is set up exclusively for this complete engine and the quick response has been achieved.

Features

Use of Plated Cylinder:

We have installed the oil jet which works to jet-spray the oil to the rear side of the piston from crankcase oil

line in order to cool the piston.

Use of Oil Jet:

Use of Wet Multiple-Disk Clutch:

We have installed a multiple-disk clutch with 5 disks onto the transmission main shaft so it can respond to 

even high output powers.

This arrangement serves to improve durability of the crankshaft and throttle response.  In addition, we have

installed a highly-reliable cartridge

 

oil filter on the clutch cover.  The clutch cover is so structured that a new

line is prepared  for taking out an oil cooler from the clutch cover and a thermostat can be installed as an 

option.

 Use of close ratio transmission:

The close ratio transmission is designed to enable smooth shift up and down and cornering, and, moreover,

effective transmission of engine power.

This cylinder is aluminum one-piece construction and the ceramic chrome plated inner wall allows the 

   

additional wear-resistance and the reduced friction loss. It also features both high gas tightness and

durability.

About our DESMO head

Most 4 stroke combustion engines use a camshaft and a valve spring to open and close the valves, but the

DESMO structure uses a specially shaped camshaft that forces the valve open and shut.

Thus, since it does not use a valve spring, there is no surging of the valve spring when driving at high speeds.

And another special feature is the very small amount of friction exerted on the camshaft.

The cylinder head uses a twin cam of 4 valves, so the intake valve diameter is 22mm and the exhaust valve

diameter is 19mm.

Within the limited space of the horizontal engine, 8 rocker arms and 2 camshafts are distributed like a precision

instrument, providing proof-positive of the technical power of our company.

In addition, we have tested a large number of combustion chambers of differing shapes, and we have utilized

the shape with the highest efficiency ratio.

Mutual compatibility of the exhaust port and the exhaust system has been achieved by using the same as our

Super Head and stock head.

In addition, the cam gear related parts and the intake manifold are also compatible with the present DOHC 

engine.

Summary of Contents for DESMO TWINCAM 4V

Page 1: ...racing course Never use this product on public roads This kit is compatible with the above mentioned compatible models ONLY Note Do Not use this product for other models than listed above The cylinder...

Page 2: ...these damaged parts as they are could lead to accidents When you notice something abnormal with your motorcycle while riding immediately stop riding and park your motorcycle in a safe place to check w...

Page 3: ...is cylinder is aluminum one piece construction and the ceramic chrome plated inner wall allows the additional wear resistance and the reduced friction loss It also features both high gas tightness and...

Page 4: ...clamp 13 1 2 2 12 Spark plug cap COMP 1 30700 DSM T00 1 13 Plug cord joint 1 00 01 1012 1 14 High tension cord 500 mm 1 00 01 1043 1 15 Hyper CDI 1 05 03 0003 1 16 Head cover gasket set 1 06111 DSM T...

Page 5: ...1 136 25 22 5th speed 1 000 24 24 rear wheel drive mechanism Type Chain drive Main Reference Value High octane gasoline research method over 97 octane value Camshaft type Items Frequency Refer to pag...

Page 6: ...film shortage at high temperatures In case you use the breather cap be sure to use an oil catch tank at the same time Due to large displacement engine blow by gas volume may increase Larger capacity c...

Page 7: ...to stretch it too tight Turn the clutch release pinion clockwise until it comes to a halt and put the plain washer into the release pinion Clutch release arm Arm spring Plain washer 20 25N m 2 0 2 5k...

Page 8: ...carburetor and pull out the spring and throttle valve Pass the inner cable of the throttle cable through the carburetor top cover and then through the spring And compressing the spring fix the top cov...

Page 9: ...he spring fix the top cover and all to the throttle valve Fix the throttle valve to the carburetor by aligning a notch on the throttle valve with the throttle stop screw In the case of VM26 Insert the...

Page 10: ...he spark plug Lightly apply the Aluminum Special the heat resistant lubricating agent to the threaded portion on the plug And tighten the plug Install an exhaust muffler according to the installation...

Page 11: ...mp the top bridge at the highest point of the straight portion to avoid the tapered portion of front fork Before installing make sure that no interference occurs when the front fork is fully bottomed...

Page 12: ...PIckup pulse Ignition AC output Neutral Switch Racing use A C G e n e r a t o r f o r S p a r k A C G e n e r a t o r f o r L i g h t i n g TAKEGAWA C D I Green Black Red Black Red Blue Yellow Green...

Page 13: ...sity matches the region and outside temperature CAUTION Be sure to use a torque wrench and strictly keep the specified torque Gap Benchmark 0 6 0 7 mm Electrode section Gap Standard NGK ER8EH Plug wit...

Page 14: ...er Lock nut Adjust nut Unfasten two bolts on the oil filter cover and detach the oil filter cover oil filter and oil filter spring Change of Oil filters Check the O ring in an oil filter cover and cha...

Page 15: ...ed At idling Give the air screw a right turn The air fuel mixture gets dense Give the air screw a left turn The air fuel mixture gets lean Loosen the tightened air screw back to the 1 5 turn position...

Page 16: ...0133 Main jet 90 00 03 0110 Main jet 150 00 03 0134 Main jet 92 00 03 0111 Main jet 152 00 03 0135 Main jet 95 00 03 0112 Main jet 155 00 03 0136 Main jet 98 00 03 0113 Main jet 158 00 03 0090 Main j...

Page 17: ...timing adjustable at up to 24 degrees Integral ignition coil with built in CDI unit Fully covered stator coil to protect the ignition coil Weight saving R type 58 rotor 336 g Stator including cords 38...

Page 18: ...uard 09 07 006 3F4L 09 07 002 4F5L Compact cool The oil Compact Cool is designed more compact compared to our current oil cooler and the best for mini motorcycles such as Monkey Gorilla The oil passag...

Page 19: ...type andreducestheshockwhenthefrontshocksreboundandcompress L R Front Fork Set Both high rigidity and lightweight which are both essential for swingarm have been achieved with the well balanced struct...

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