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Spesifikasi:
[Diameter bore] 57mm
[Panjang stroke] 54mm
[Diameter klep masuk] 22mm x 2
[Diameter klep buang] 19mm x 2
Bore Diameter] 57mm
Stroke Volume] 54mm
Intake Valve Diameter] 22mm x 2
Exhaust Valve Diameter] 19mm x 2
[Deskripsi]
Set termasuk head kit, cylinder kit, camshaft, dan crankshaft kit (termasuk rantai cam alpha die-hard dan baut stat).
Includes head kit, cylinder kit, camshafts, crankshaft kit with die-hard alpha cam chain and stud bolts.
■Features of the Desmodromic Twin Cam 4V Head
Desmodromic engine (forced valve open/close mechanism): The majority of motorcycles use camshafts and valve springs to open and close the intake and exhaust valves.
The Desmodromic mechanism is a mechanism that forcibly opens and closes the valves by using a specially shaped camshaft and rocker arm. Since there is no valve spring, surging does not occur in the high RPM range and the friction related to the camshaft drive is very small.
The SP Takegawa Desmodromic Twin Camshaft 4V is designed with 8 rocker arms and 2 camshafts that are arranged like a precision machine within the limited stud bolt positions of the Monkey.
■Rocker arm (forced valve open / close mechanism)
The valve opening and closing is forced by the camshaft without the valve spring.
Compared to the valve spring type, it reduces the resistance of the valve train and eliminates the valve surging that occurs in the high RPM range, which results in higher output and engine response in the high RPM range.
(A spring is provided on the closed side only to keep the valve in place)
■Hollow camshaft with oil jet
The camshaft of the forced valve opening / closing mechanism is equipped with camshafts that perform independent actions of "opening" and "closing".
Furthermore, an oil line is installed in the center of the camshaft to guide oil to the cam sprocket.This increases the durability and lubrication of the cam chain.
In addition, an oil jet passage is installed in the camshaft cam surface, and oil is sprayed from the cam surface to the rocker arm to effectively cool and lubricate.
・The camshaft journals are supported by ball bearings on both ends to reduce frictional resistance to the camshafts during startup and at low speeds.
■Ceramic-Mexiclinder
Adopts all-aluminum ceramic plated cylinder with excellent durability, airtightness and heat dissipation.
The cylinder is equipped with a temperature sensor as standard.
You can measure the cylinder temperature by purchasing SP Takegawa's thermometer built-in meter or thermometer.
Catatan
* Setelah dipesan, produk ini tidak dapat dibatalkan, dikembalikan, atau ditukar.
Peringatan
*Harap diperhatikan bahwa pembatalan dan/atau pengembalian produk tidak dapat dilakukan setelah pesanan dibuat.
*When the twin cam Desmodromic 4V cylinder head is installed, the length of the engine becomes longer and the engine interferes with the tire with the stock front fork and the stock top bridge and stem, so the front end needs to be changed.
*For Monkey and Gorilla
・It is recommended to install SP Takegawa's front fork kit at the same time.
・When installing SCUT138cc on a vehicle equipped with Φ30 upright front fork kit, use the specified steering & top bridge set (part number: SCUT138cc)06-02-0015).60mm offset type
・SP Takegawa 2 piece front fork kit (for 10 inches) cannot be installed with Desmodromic Twin Cam 4V SCUT138cc because the fender interferes with the head.
*For CRF50F / XR50R and CRF70F / XR70R
・SP Takegawa does not sell front fork kits.
・There are some aftermarket frame and front fork kits on the market, but SP Takegawa has not confirmed the installation of these kits.You are responsible for your own vehicle installation.
・SP Takegawa's digcrosser exhaust cannot be installed at the same time.
*Depending on the lot, the product may be delivered with the old price and label with the old JAN code before the price change.
*There may be changes in product specifications due to the manufacturer's reasons.
* Please note in advance that cancellation and/or return of this product cannot be accepted once the order has been placed.
