Cylinder Heads

[gagvanman]

Working on my 1776, I have measured the valves and find the valves measure:
Inlet valve 33 x 8
Exhaust valve 30 x 9
Which I believe are the specs for a 1300

No wonder I am down on power. Biting the bullet and ordering a pair of CB Performance 044 40 x 35.5 heads.

The person who built this knows who they are (SS)...

 

[atafonso]

These can be later fuel injected heads(if your engine is a dual port). Are the spark plugs long reach? 1300`s had 35.5x32mm(dp).

Abel

 

[67panel]

Port match the heads , just a clean and raise exhaust port and they flow a lot better .