will 308 roller rockers fit 304 ?

[DANNY8]

I would go check, but don't really wanna pull the rockers off now that they're on there, all oiled up, and got cam lube on the ends of the pushrods...all ready to go!

 

[SRH-420]

Cheers for the info guys i will do as said above and check them out. I will let you know how i go thanks once again

 

[VK_3800]

FYI there are two pairs for the old carby heads, two front and two back, if you swap them around does it get any better?

All the aftermarket rockers I've seen for early heads are symmetrical and fit the same no matter how you swap them around...?

 

[ari666]

yep, mine are symmetrical, never head of a front or back. if its the case, i guess i just 'lucked it' and got them all right without trying.

?

 

[VR38]

It states 2x front and 2x back pairs for each head in Yella Terra's fitting instructions and to check you have not mixed them, don't make me dig them out and quote the actual differing dimensions they state.
As from the above photo, maybe you did not pay enough attention when fitting.

 

[VR38]

yep, mine are symmetrical, never head of a front or back. if its the case, i guess i just 'lucked it' and got them all right without trying.

?

What type are they?
You may be alright with some other types but not race style shaft mount, they come in the box 4x one and 4x the other and will not line up correctly if installed in the wrong place, it will still work and it is not much but it will wear unevenly on the tip and valve guide.

 

[VK_3800]

I'm pretty sure its the later (VN) heads that have the different ones like you're describing, not the early heads

 

[VR38]

PFI heads are symmetrical. ie there is no alternating of valve arrangement between the inlet and exhaust.

 

[ari666]

mine are yella terra shaft mount. they all fit beautifully. all identical. all on old VK style heads.

 

[VK_3800]

PFI heads are symmetrical. ie there is no alternating of valve arrangement between the inlet and exhaust.

I don't disagree with that, its the slight offset of the valve in relation to the pedestal. There is a photo around somewhere (can't find it at present) which shows it nicely on the Yella Terra rockers, one of each pair has the roller tip slightly off centre