Okay, here are some measurements (in grams). I'll verify them tomorrow when
I'm not so tired.
R16 U20
-------- --------
Piston w/pin 580 652
Rod 798 899
Just because the pin height is higher in one piston doesn't necessarily mean
the piston is shorter (and thus lighter).
Gordon Glasgow
-----Original Message-----
From: Daryl Smith [mailto:drlsmith@dccnet.com]
Sent: Wednesday, April 08, 2009 11:23 PM
To: Gordon Glasgow; 'Tim Waltz'; datsun-roadsters@autox.team.net
Subject: Re: [Roadsters] long rod (r16) stroker
----- Original Message -----
From: "Gordon Glasgow" <gsglasgow@comcast.net>
>
> A longer rod will also weigh more than a shorter rod, while the piston
> weight will change very little (if at all). This may reduce the ability of
> the engine to rev, partly offsetting the gains from the first factor.
>
> Gordon Glasgow
Good explanation Gordon.
As far as the rods go though I was under the impression that the R16 rod was
lighter than the U20 rod, and that the shorter piston
(shorter pin height because of the longer rod) should save a few grams
also....??? The pistons in this case would be about 8 mm shorter in this
case for the long rod stroker. I would expect a reduced weight with that
much difference in pin height.........
Anyone know what these rods weigh?
Daryl
________________________________________
Support Team.Net http://www.team.net/donate.html
Datsun-roadsters mailing list
http://www.team.net/archive
http://autox.team.net/mailman/listinfo/datsun-roadsters
|