will a b6 head fit b3?

[lrcboi]

the head is from a bg series ford laser b6 sohc will it fit the b3?

i heard that the earlier ones fit and the later ones dnt

[muscle_Car1]

I dont think so

[FestYboy]

there's no reason the heads won't swap, except for valve clearances around the cylinder wall. i have an extra B3 and B6 head, i'll look into it...

[lrcboi]

im in nz and we dnt really have many b6sohc engines ae i would of thought the early ones fit cos of 8v but im unsure of the 12v

ive been asking around foran earlier sohc 8/12v b6 head from familia/laser 85-89 or 90-94 323

i guess ill have to take the head off the b3 but im guessing that ideally its only going to take the 8v as its an 8v newayz

seeing all b3s have 9.7:1CR shouldnt the pistons be the same?

[funky technician]

yes it works I drove my car for a year with an 89 b6 head on it, it lowers the commpression a bit but the extra port size makes up for it, it also had a little more throttle responce

[jlord16]

what gasket would you use

the B6 have a marginally bigger bore then the B3??

[funky technician]

I used the b6 head gasket, it overlapped the block a bit but I didn't care, and yes the b6 has a bigger bore by a bit

[lrcboi]

y not use the b3 and just enlarge parts of it?

[lrcboi]

so any b6 sohc head works? or just the 8v version?

what about 12v ?

[FestYboy]

just the 8V head

[lrcboi]

ok so how big are the b6 8v valves ? and what about the ports compared the b3 ?


also i was thinking of an adjustable cam gear?
i read on another page that you can use a bp/b6 dohc gear and rather than make a custom that would be easier is this true?

[lrcboi]

ok i got my head off my b3 and i saw the valve and spark pockets are they the same for b6 ? will it fit right on? with no problems if i use an oem size headgasket and same cam timing? i have a b6 sohc 8v head lined up

[FestYboy]

^^ the B6 valves are HUGE in comparison to the B3 valves, as well as the ports. NOTE: before installing the B6 head, have the shelf on the exhaust port smoothed out on the short turn radius, this will improve flow and scavenging.

the cam gears from the DOHC B series engines will work, and the piston reliefes are the same between the two.

[lrcboi]

cheerrs

[FestYboy]

head will bolt on with a B6 gasket