Port Cylinder Head

thread
Norton_Commando_Exhaust_Port_Thread_Repair_Service_01_ln

Norton Commando 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 3 sizes of bronze repair inserts to cope with previous repairs but in the last resort we can weld the port to…
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DUCATI_EXHAUST_PORT_THREAD_REPAIR_SERVICE_each_head_01_onp

DUCATI EXHAUST PORT THREAD REPAIR SERVICE (each head)

Using our own CNC Milling machine we helical interpolate a new thread into the exhaust port to accept one of our CNC MACHINED. 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. Inserts are threaded and locked in and WILL NOT jack out. We can weld the port to fill in any poor attempts at previous repairs. (please note this can be charged as an extra). Also any remedial welding where poor…
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TRIUMPH_650_750cc_TWIN_EXHAUST_PORT_THREAD_REPAIR_SERVICE_01_kfu

TRIUMPH 650/750cc TWIN EXHAUST PORT THREAD REPAIR SERVICE

TRIUMPH 650/750 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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Norton_Manx_Exhaust_Port_Thread_Repair_Service_01_gwcm

Norton Manx 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 coincidentally(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 3 sizes of bronze repair inserts to cope with previous repairs but in the last resort we can weld the port to…
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Triumph_T150_Trident_750_Exhaust_Port_Thread_Repair_Service_01_mjx

Triumph T150 Trident 750 Exhaust Port Thread Repair Service

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 threads are coincidental. In real terms this provides a very strong and wear resistant high expansion insert…
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Triumph_T160_Trident_750_Exhaust_Port_Thread_Repair_Service_01_ncys

Triumph T160 Trident 750 Exhaust Port Thread Repair Service

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 threads are coincidental. In real terms this provides a very strong and wear resistant high expansion insert…
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Norton_Dominator_Atlas_Exhaust_Port_Thread_Repair_Service_01_nzt

Norton Dominator/ Atlas Exhaust Port Thread Repair Service

NORTON TWIN EXHAUST 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 3 sizes of bronze repair inserts to cope with previous repairs but in the last resort…
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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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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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