buick-rover-v8
[Top] [All Lists]

RE: rod length and deck height

To: buick-rover-v8@autox.team.net, mgb-v8@autox.team.net
Subject: RE: rod length and deck height
From: "Jones, Daniel C" <Daniel.Jones@MW.Boeing.com>
Date: Thu, 17 Feb 2000 13:41:03 -0600
>       Peter Kent told me he measured a Rover (3.5 or 3.9, don't remember
> which) and found it to be 8.957".  Dan LaGrou, of D & D Fabrications, told
> me over the phone that the BOP is 8.960".
> 
That checks with the info I have.

>       Are 6" rods available with the 2" diameter bearings?  From whom?
> 
>From many aftermarket rod manufacturers.  Eagle for one, list small 
journal rods in 5.7", 5.85", and 6" lengths.  Pick up a copy of Circle 
Track magazine to check for best prices.  

>       I would definitely like to hear further explanation regarding a
> long rod's effect on induction limited configurations.  Does it in any way
> relate to the "rod ratio" which we see mentioned often?
> 
Yes.  Rod ratio is the ratio of the rod length (center to center) to the
stroke.
> Longer rods reduce the rod angularity and thus the cylinder wall side load
> 
> and friction, all good things.  The piston also dwells longer at TDC,
> allowing 
> more power to be extracted from the combustion event.  The more
> restrictive 
> the heads/intake/carb, the more benefit you'll see.  Rod length does
> affect 
> engine tuning so a sophisticated engine simulation program like Dynomation
> 
> would probably help to optimize the package.
> 
Dan Jones

<Prev in Thread] Current Thread [Next in Thread>