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Well, the red motor was first, I don't know much about that...
Then came the blue motor, which had a 12 port head, instead of a 9, electronic dizzy and was only available in 173 and 202.
The black motor came next which was basically a blue motor, but had the option of EFI, and different exhaust set-up. Same size, but different fit.
There are probably more differences, but that's all I can i think of at the moment, I hope it helped!
It was a bit rough digging 14years for that. But to clear it up, greys are older than you say. HQ had the red6 and hz was after that. Less emissions stuff on red, elec ign and better head on blue. EFI on black.Wrong all wrong.. grey was first !!
They added the colour for the fun of it, cos grey was plain, and easier to identify the different engines. Black and Blue is what you want. Reds basic, Grey's way old school, 70s ...
and if ya have a HZ or something the grey come out of (which don't really exist anymore cos the old fella threw them over the shoulder)
and in with a 208/304/308/355 .... Thats what I know
I just found a 202 blue in a VK shell
Pretty stoked just have to wait to pass boarder NSW to grab it.. when we can obviously
Errr VB had red motors.Commo's had blue and black (VK) only. Never reds.
Cheers for the correction thereErrr VB had red motors.
Blue is VC and VH
Black is VK.