[Spridgets] Tubular pushrods - Re: Head Stud Torque Setting

[rrengineer.mike]

Reciprocating weight and rigidity.Mike MacLean


Sent via the Samsung GALAXY S® 5, an AT&T 4G LTE smartphone

-------- Original message --------
From: David Lieb via Spridgets <spridgets at autox.team.net> 
Date: 11/29/2015  12:33 PM  (GMT-08:00) 
To: spridgets at autox.team.net 
Subject: Re: [Spridgets] Tubular pushrods - Re: Head Stud Torque Setting 

I thought that the key benefit of the tubular pushrods was to reduce reciprocating weight, pushing the valve float rpm a little(!) further up the tach.David L
On Sun, Nov 29, 2015 at 1:20 PM, WeslakeMonza1330--- via Spridgets <spridgets at autox.team.net> wrote:





I switched to the APT push rods which I'm guessing are hollow (they are 
thicker).  I haven't bent one yet.  I have bent the standard ones but 
that engine did see more regular high rpm than this engine (car had a 4 speed 
box in so anything over 100mph need high rpm).
 

In a message dated 28/11/2015 20:32:53 GMT Standard Time, 
spridgets at autox.team.net writes:
Good 
  call on the stock pushrods, Mike. Even with clearance-ing  of holes, 
  there is no real reason to use tubular pushrods. I've had them bend just as 
  readily as stock ones. I've had the same stock pushrods in my now 10+ year old 
  race engine for seven years without any issues. The benefits of good oiling 
  outweigh any marginal benefits the tubular ones offer. I assure you I am 
  beating my motor harder than just about anyone on the list. Redline oil and 
  proper clearances are key to extended life at 8000 RPM

Ron 
Soave
------------------------



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