Holden 186/202 krogdahl cylinder head.

[TdracerTd]

I can across this. According to the article these heads with supporting mods would allow engine speeds up to 11,000-12,000 rpm.

I thought it was pretty cool so sharing.

http://www.aussiespeed.com/holden-krogdahl-head/

[Gareth]

Nice

[vlad01]

That is sexy!

[Holden202T]

yeah if only they were still making them!

[vt3.8lt]

Thats awesome makes me wish i still had a vh

[Charlescrown]

Looks like it might be copied of a Jag head. Nice bit of gear but I wouldn't like to rev any Holden inline 6 anywhere near 11,000 rpm

[TdracerTd]

Looks like it might be copied of a Jag head. Nice bit of gear but I wouldn't like to rev any Holden inline 6 anywhere near 11,000 rpm

From what I have read it was based on and Alfa head. Only 12 valves, and apparently not the best combustion chamber design. Still would have to be better than the tractor motor heads that came on the red motors.

[psyolent]

toyota 5MGE similar also.
krogdahl heads havent been made for many, many years. i think repco may have done one also.
i'd love to see one of these in the flesh.

anyone ever see that guy who did something interesting with a grey motor - not sure it was stroked but, he had to weld the side of the block for some crazy kind of design. apparently created a pile more torque in doing so. see if i can find the article.

[psyolent]

and waggot
http://www.thegreymotor.com/2014/11/spe ... on-fx.html

some good info there
including a crossflow head. hmmm.

[psyolent]

i have a hard on
https://youtu.be/JoS_yYmpxpw