202 head on 186...

[reddo]

Hi All
Just a quick quiz....
I have a 186 motor with a 202 head..... small spark plug holes.
Somewhere back in history i seem to remember someone saying ya have to use 202 pushrods when using a 202 head on a 186.

Is this correct??
If so... i am guessing the reason must be something to do with the 202 head being "Thicker ".. or the rocker gear sits higher on the head meaning the distance from the top of lift on the cam /cam follower to the rocker is greater on a 202 than it is on a 186???
If ya dont use the 202 pushrods then you arent going to get the full movement on the rocker .. and the valve wont fully open ??

Your thoughts ??

Reddo

[EK JAY]

put a 149 head on it

[reddo]

Hi Jay.
Just came in from down the shed.
Have taken the 202 head off and just dropped a head off a 149 high comp motor on it.
Gotta chase up a few pushrods as some of the ones i pulled up out of my motor are from QLD.. aka Banna shaped/bent
The combustion chamber on the 149 head is about half the size of the 202 , so there should be plenty of "squish" before the "bang"

Mums 94th birthay tomorrow so all work ceases until i call in and have a few beers with her ( beer is the secret to her long life ) after work tomorrow arvo.
Should have it running late tomorrow night .

Cheers
Reddo

[muza]

Happy b'day mumma Reddo!!!
Good effort

[EK JAY]

giddy up