Rocker Arm Assembly
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Road Master
Joined: Aug 2007
Posts: 942
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From: Grew up in Texas, moved to AZ
Rocker Arm Assembly
If I have the older rocker arm assembly (non-breather), and I would like to run with breather heads, do I just need to get the middle rocker cover? I think the lower cover and upper covers are the same, but not sure.. Thanks.
Banned
Joined: May 2018
Posts: 4,576
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From: Viet Vet, crossroads
I think you need a whole bunch of other stuff to run breather heads.
The timing cone is different afaik TOO.
Why would you want to switch?
In this case the bottom breather is better than the top in my opinion.
The timing cone is different afaik TOO.
Why would you want to switch?
In this case the bottom breather is better than the top in my opinion.
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Road Master
Joined: Aug 2007
Posts: 942
Likes: 323
From: Grew up in Texas, moved to AZ
I'm thinking about putting an Evo motor together. Right now, I would be putting a '97 flywheel assembly in a '88 case, and I have '97 heads, but non-breather rocker cover assembly laying around.
My plan was to get '93 later cone cover, and build a top breather engine, and just wanted to know if I needed a different set of rocker cover assembly, or just the different middle rocker cover section, since it's the one that has the umbrella valve.
I think the upper rocker cover and lower cover rocker are the same, but needed some input. Thanks.
PS. I also prefer lower case breather too (my 89 FL). No data to compare the two, except bro-science. Less potential mess and maintenance to deal with, but I think they both work well.
My plan was to get '93 later cone cover, and build a top breather engine, and just wanted to know if I needed a different set of rocker cover assembly, or just the different middle rocker cover section, since it's the one that has the umbrella valve.
I think the upper rocker cover and lower cover rocker are the same, but needed some input. Thanks.
PS. I also prefer lower case breather too (my 89 FL). No data to compare the two, except bro-science. Less potential mess and maintenance to deal with, but I think they both work well.
Last edited by daven9113; Oct 31, 2018 at 02:09 PM.
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