Rocker posts

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JanWulf
850 Super
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Rocker posts

Post by JanWulf »

Hi!

Is there any difference between the rocker posts for smalbore and bigbore (smal vs. oval pad 'folded' rockers)? Or are they interchangeable? I hope for the latter, saves me a head gasket :)

Background: I installed a smalbore 'folded' rocker assembly (smal, round pads) to a 1275, assuming they were the same. Now that I found out how bad they sit on the valves, I want to change them over for the oval pad type rockers. But I'm not sure whether the offset for the rocker shaft is different between round & oval pad type rocker assemblies.

Situation now:

Image

Regards,
Jan

PS: I hope you get what I'm on about :D
You can't have too many cars. Just too little space...
mk1
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Re: Rocker posts

Post by mk1 »

As far as I am aware the 3 types of rocker post are;

Early alloy (850 only)

Sintered (most common by a mile)

Forged (Cooper S only)

As far as I a aware there are no dimensional differences worth noting, you can get spacers to move the rockers around on the shaft to align them as well as possible.
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JanWulf
850 Super
Posts: 133
Joined: Thu Jun 24, 2010 12:32 pm
Location: germini

Re: Rocker posts

Post by JanWulf »

Hi Mark!

Ok, thanks a lot! :)

I know about the spacer trick (MiniSpres sells even a shim kit), but since I need to pull the shaft I'm it's not more wok to just chnage the rockers. And if it's true that the oval pad rockers give a wee little more lift...

Regards,
Jan
You can't have too many cars. Just too little space...
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JanWulf
850 Super
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Re: Rocker posts

Post by JanWulf »

Mmmh - yes, I think that looks a lot better!

Image

I had indeed fitted the smal pad ones... Easy to spot the difference, once you know about the two different rockers.
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Re: Rocker posts

Post by mk1 »

Much better!
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