|
|
| Re: fitting a 1400 head to a 1200 |
Subject: Re: fitting a 1400 head to a 1200
by Dodgeman on 2003/9/30 9:08:13
You do not mention which model of A12 engine that you have. If it is a 1200 engine then the following will apply, but if it is the one with the altenator on the distributor side, then it is a straight bolt on.
I fitted a 120Y GX head to a 1200 & the same problems apply.
Simply study both heads very carefully & figure out how the two designs differ in the supply of oil to the rockers, then copy the 1200 one. From memory, it needed two small passages to be drilled. The size can be determined by simply placing a drill bit into the 1200 head to check that you have the right size
There is no need to weld anything if you have access to a comprehensive tap set. Just tap the newly drilled transverse hole with a 1/8" gas thread, or it's metric equivalent, & fit a suitable plug. Thats what i did back in about '86 & it's still on the road.
Even without porting, if you want to keep it low buck, the A14 head will yeild better flow figures as the ports & valves are bigger than the A12. Just compare the combustion chamber sizes & measure them if necessary, as any increase in volume means a reduction in compression ratio & there are a couple of diferent A14 heads.
Chris
|
|
