[Roadsters] R16 - How to get .425" Valve lift?

[Daryl Smith]

Thanks for all the replies and suggestions. And thanks to Steve and Jim on 
311s.org for sending me to the competition prep manual. 
http://www.datsun.org/roadster/info/sharp1600.pdf
They mention going as high as .480" valve lift, trimming the stands to keep 
the geometry correct, and shortening the pushrods, but nothing about the 
seals....?

Of couse Walter Peterson told me much of this already, but I thought there 
had to be a better/cheaper/less complicated way.....Silly me.....

Don't know if they used seals (been suggested leaving them out) or went to a 
different type of seal...Chevy/Porsche. . .?   or Custom made as Walter 
pointed out?

Thanks
Daryl


----- Original Message ----- 
From: "Daryl Smith" <drlsmith at dccnet.com>
To: "Datsun Roadster List" <datsun-roadsters at autox.team.net>
Sent: Thursday, August 21, 2008 11:34 AM
Subject: [Roadsters] R16 - How to get .425" Valve lift?


> No answers to the last question so let me put it another way......
>
> How do I get .425" Valve lift on an aluminum R16 head.
> I had a cam with .387" valve lift which crushed the seals (exhaust only) 
> and wanted
> to increase the lift if I could without too much difficulty.
>
>
> Anyone have any tips on whats involved? Any way to do it without custom 
> made
> parts?
>
> Any advice appreciated!!
>
> Daryl

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