Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

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blackfactoryV8
Peter Cosmides

(3 posts)

Registered:
12/27/2007 07:52PM

Main British Car:
Rover V8 tappet pre-load
Posted by: blackfactoryV8
Date: February 06, 2010 08:32PM

I was told to be sure to set the preload on the new tappets I am installing with my new camshaft. I am unfamiliar with this process, thinking that hydraulic tappets are non adjustable. "drop em in and your set"

Can anyone tell if this is a critical and necessary procedure?
Thanks


mgb260
Jim Nichols
Sequim,WA
(2463 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Rover V8 tappet pre-load
Posted by: mgb260
Date: February 06, 2010 09:03PM

Initial set up, yes. I would fill the lifters with oil first. Shaft rockers like Buick/Rover are not adjustable unless you have adjustable rockers. If adjustable, adjust like solids with the valves closed, but instead of gap turn the pushrod while tightening. When it just stops turning, tighten 1/2 turn. I guess you could also use adjustable pushrods or shim the rocker shaft stands also.



Edited 1 time(s). Last edit at 02/06/2010 10:37PM by mgb260.


Moderator
Curtis Jacobson
Portland Oregon
(4577 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Rover V8 tappet pre-load
Posted by: Moderator
Date: February 07, 2010 01:23AM

Pete, I think you'll find what you're looking for in this old thread:
Hydraulic Lifter Preload (Buick/Rover)
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