202 heads

bommodore · #1 28-09-2005, 09:34 PM

can anyone tell me the differance between black 202 and blue 202 heads is can i for eg put a black head on my blue motor, is a black head better.
if anyone has a list of differances that would be good but any help would be appreciated

vkberlina · #2 28-09-2005, 09:47 PM

The black heads had a slightly better flow due to a change in the casting for the inlet valves to improve gas flow. This gave a wider port about the valve along with a very small amount

I have included a diagram for reference

bommodore · #3 28-09-2005, 10:08 PM

so the black head bolts up fine and has better air flow making it a better head is that right

vkberlina · #4 28-09-2005, 10:09 PM

Yup.......

bommodore · #5 28-09-2005, 10:11 PM

with the air injection do i just put bolts in the injector hole

vkberlina · #6 28-09-2005, 10:24 PM

Try to buy an EFI 202 head that way it wont have the holes.

For a carbie head a few ways of doing it

One my old EFI 202 I ran a carbie head and has large grub screws made up for the holes. Else you can use the air injection fittings off the pipework and weld up the holes. Or just buy short bolts for the holes.

bommodore · #7 28-09-2005, 10:28 PM

thank you for your help i will go and get it tomorrow now