brock heads

[caldonia]

Hey guys

My mate has a vk 5.0 he bought the car years ago but said the previous owner told him it had brock heads. Is there any difference and how can he identify if they are?

Thanks

[Boonz]

there is a B cast into the head under the rocker cover.

[SL/ENUT]

No the B is cast into the end of the heads, it will be a rough B cast too.

[immortality]

failing that, check your valve sizes 1.94 in, 1.5 ex

[Cane_It]

The "B" will look like a weld bead on the end of the head, SL/E NUt is correct.

[vee ka]

i didn't think all Brock heads are "B" cast??

i've matched mine to some standard "big valve" heads i had off my old VL and the port size is huge compared to standard but both had the same size valves.

[vkberlina]

Heres some B cast heads. B cast heads were cast differently to standard heads and will have a B cast into them.
See attached some images of what a B cast head will look like

cheers
Scott

[caldonia]

Just a quick question to you Scott unrelated to this thread

What 1/4mile time have you got out of the vk EFI
Also is the engine stock

[vkberlina]

No 1/4 times yet, the car has lived in the shed since the build with only 170km done. Those kms were done driving it to and from wheel aligners & auto engineer to have it engineered. I hope to have it on rego soon just been too busy to do anything with the car.

The engine isnt stock it has had a full rebuild, balence & blueprint. It is only a mild rebuild nothing too crazy I didnt want to loose street drivability.

cheers
Scott

[immortality]

The "B" will look like a weld bead on the end of the head, SL/E NUt is correct.

just checked the heads on mine and they definitly have the "B" there, funny, i never noticed it before

[Smitty]

Heres some B cast heads. B cast heads were cast differently to standard heads and will have a B cast into them.
See attached some images of what a B cast head will look like

cheers
Scott

and this is what a 'used' set look like



cheers

[immortality]

yep, don't you love unleaded fuel. thats why i run avgas in mine, nice clean exhaust valves. are there any marking on your crank/rods?