Port Cylinder Head
Bsa_A75_Rocket_3_750_Exhaust_Port_Thread_Repair_Service_01_gyr

Bsa A75 Rocket 3 750 Exhaust Port Thread Repair Service

BSA A75 ROCKET 3 750 TRIPLE EXHAUST PORT THREAD REPAIR (both sides) Using our own CNC machined STAINLESS STEEL insert. We helical interpolate a new repair thread into the head also machining the stub seating face (this face can be worn and if it is, we machine and fit a stainless spacer to recreate a good seat) and then we fit and lock our inserts into the head. These inserts are screwed in and will NOT WORK LOOSE nor can they be jacked out by the exhaust stub. The new thread is then machined into the insert to fit the new stub exactly. Due to the nature of CNC thread…
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TRIUMPH_750cc_TWIN_PUSH_IN_TO_PUSH_OVER_EXHAUST_PORT_THREAD_CONVERSION_01_lop

TRIUMPH 750cc TWIN PUSH IN TO PUSH OVER EXHAUST PORT THREAD CONVERSION

TRIUMPH 750cc TWIN EXHAUST PUSH IN TO PUSH OVER CONVERSION Using our own CNC Milling machine we helical interpolate a new thread into the exhaust port to accept one of our standard stubs. The new thread is CNC milled to fit the new stub exactly. Included in the price is a pair of our standard exhaust stubs and any remedial welding where poor attempts have been made to secure the exhausts. The head will be also cleaned and AQUA BLASTED prior to machining. We are offering this as a guarenteed conversion and the picture is for demonstration purposes only please note we also stock valves and guides offer a complete…
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1988_Yz250_Ported_Cylinder_Top_End_Motor_Jug_Barrel_Piston_Rings_Head_01_jfh

1988 Yz250 Ported Cylinder Top End Motor Jug Barrel Piston Rings Head

Nice oem 88 yz 250 ported cylinder by DBP. ON 1st oversize piston. The bore looks great with some cross hatching still showing, included is the head, 2 power valve covers and piston, please look at photos closely. I also have the power valve. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle & Scooter Parts & Accessories\Body & Frame\Fairings, Plastics & Body Kits". The seller is "motoman143" and is located in this country: US. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, Korea, South, Indonesia,…
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Triumph_500_Twin_Exhaust_Port_Thread_Repair_Service_01_bv

Triumph 500 Twin Exhaust Port Thread Repair Service

TRIUMPH 350/500 TWIN EXHAUST PORT THREAD REPAIR (both sides) Using our own CNC machined STAINLESS STEEL insert. We helical interpolate a new repair thread into the head also machining the stub seating face (this face can be worn and if it is, we machine and fit a stainless spacer to recreate a good seat) and then we fit and lock our inserts into the head. These inserts are screwed in and will NOT WORK LOOSE nor can they be jacked out by the exhaust stub. The new thread is then machined into the insert to fit the new stub exactly. Due to the nature of CNC thread milling, the two…
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GSXR_1000_K3_K4_Race_Track_Cylinder_Head_Kent_Crescent_High_Compression_Ported_01_hw

GSXR 1000 K3 K4 Race Track Cylinder Head Kent Crescent High Compression Ported

GSXR 1000 K3 K4 Race Track Cylinder Head Kent Crescent High Compression Ported. Ported and gas flowed head. Crescent titanium retainers IN. Kent race cams SUZ31 and D1148. PTV clearance to check when fitting. The D1148 cam lift is 8.0mm and the duration at 1mm with zero clearance is 256°. Cam Lift (mm) 10.23mm Inlet / 8.45mm Exhaust. Duration at 1mm 258 Deg Inlet / 236 Deg Exhaust. Full Lift Inlet 105 Deg ATDC/Exh 105 Deg BTDC. LTDC 3.20mm Inlet / 1.61mm Exhaust. Valve Lift (mm) 9.98mm Inlet / 8.20mm Exhaust. VC (mm) 0.25mm Inlet / 0.25mm Exhaust. This item is in the category "Vehicle Parts & Accessories\Motorcycle & Scooter…
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Manx_Norton_Exhaust_Port_Thread_Repair_Service_01_tz

Manx Norton Exhaust Port Thread Repair Service

Using our own CNC Milling machine we helical interpolate a new thread into the exhaust port to accept one of our CNC MACHINED bronze inserts. The new thread is then CNC milled inside to fit the new rose nut exactly. Because of the nature of CNC machining the external and internal threads are machined coincidentaly(both thread starting in the same position with one thread inside the other) giving a very strong insert. These bronze inserts are threaded and locked in and WILL NOT jack out. We have instock the bronze repair inserts to cope with previous repairs but in the last resort we can weld the port to fill in…
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01_13_YZ250F_YZ_250F_Port_Ported_Head_Porting_Polish_Polished_New_OEM_Yamaha_Kit_01_vkmi

01-13 YZ250F YZ 250F Port Ported Head Porting Polish Polished New OEM Yamaha Kit

FITS'01-13 YAMAHA YZ250F MODELS! THE HEAD YOU RECEIVE WILL LOOK JUST LIKE THESE PHOTOS! GET YOUR HEAD FROM THE BEST! Brand new OEM Yamaha cylinder head. Full race port and polish. Works with stock or built engine. We will put the quality of our cylinder head porting up against any in the industry, on the track or on the dyno. DO YOU MAKE A LIVING WORKING ON BIKES? ARE YOU A SHOP OR DEALER? WOULD YOU LIKE TO GET BETTER PRICING ON THE PARTS YOU SELL? IT'S FAST AND EASY. PRICES ARE SUBJECT TO CHANGE AND LISTINGS MAY BE REVISED AT ANY TIME WITHOUT NOTICE. At BPRATV we sell parts…
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