|
|
|
Cylinder Head |
|||||||||||
                   |
Standard Cylinder Head |
||||||||||
 |
 |
 |
 |
 |
|||||||
| This is what a standard Lotus Carlton head looks like, its a long beast but pretty much the same as a GSi item. Differences are modified camshafts & some machining carried out in the combustion chamber to help lower the compression ratio. | |||||||||||
|
Inlet Port Work |
|||||||||||
 |
 |
 |
 |
||||||||
| The first picture shows the standard inlet port within the head. The other pictures show the work I carried out to match the inlet port to the injector rail holder & to also the gas flow the inlet path. Also notice the shortening of the valve guides to also improve airflow. | |||||||||||
|
Exhaust Port Work |
|||||||||||
 |
 |
 |
 |
||||||||
| The first picture shows the standard exhaust port within the head. The other pictures show the work I carried out to enlarge & gas flow the exit port. Again the shortening of the valve guides was also carried out. | |||||||||||
|
Chamber Work |
|||||||||||
 |
 |
 |
 |
 |
|||||||
| Again the first picture shows the standard combustion chamber within the head. The other pictures show the work I carried out to enlarge & gas flow the inlet & exhaust ports. | |||||||||||
|
Inlet & Exhaust Valves |
|||||||||||
 |
 |
 |
 |
 |
|||||||
| These pictures show the cleaning of both the inlet and exhaust valves. A comparison between before & after the work can be seen. New valve stem oil seals are also obtained. The brown items were a factory recall to be replaced with the green items, looks like this engine (737D) still had the original brown items, bar one !! | |||||||||||
|
Completed Head |
|||||||||||
 |
 |
 |
 |
 |
|||||||
| Head was also skimmed to ensure a nice flat sealing surface and finally the fully completed head was ready to be re-fitted once all the valves had been fully lapped in. | |||||||||||