The U20 specs are alredy compiled at
http://www.gordon-glasgow.org/U20specs.asp. Not that I see any problem with
having this info in more than one place.
BTW, the term "deck height" is normally used to refer to the position of the
top of the piston relative to the top of the block when the piston is at Top
Dead Center. When engine builders refer to deck height, it is usually in
measurements like .005" which means that the piston top is .005" above the
top surface of the block. If the piston top is below the top of the block,
the deck height would be negative.
> -----Original Message-----
> From: owner-datsun-roadsters@Autox.Team.Net
> [mailto:owner-datsun-roadsters@Autox.Team.Net]On Behalf Of Daryl Smith
> Sent: Sunday, November 28, 2004 1:45 PM
> To: Graeme Suckling; datsun-roadsters@Autox.Team.Net
> Subject: Re: 1500 Connecting Rod Length?
>
>
> > Daryl, just measured my G15 rods.
> > As near as I can, they are 144mm centre to centre.
> > Regards,
> > Graeme Suckling
>
> Thankyou Graeme, Gordon and Carl,
>
> There are two reasons for my asking:
> 1. A discussion on the 311s.org site about using the G15 crank in an R16
> block to get about 1800cc's. To use a stock R/U piston I
> calculate a 149 mm
> rod is needed.
>
> G15 stroke @ 74 mm
> Con. Rod @ 149 mm
> R/U piston pin height @ 41 mm
> R/U deck height @ ~ 227 mm
>
> (1/2 stroke + rod length + piston pin height = Deck Hieght)
>
> 37 + 149 + 41 = 227 mm
>
> So , unless there is a workable 149mm rod, the best way I can see
> to do this
> is with an R16 rod and a custom piston. 37 + 152.45 + (37.55) = 227
>
> Anyone know of a 149 mm rod that could work?
> How about some of that Brit. :-O stuff? DatsunMike?
>
> 2. I am in the process of putting together a data sheet for the G, R, U,
> and H engines. Basic stuff like bore, stroke, deck height, rod length,
> piston pin height, valve sizes...etc.
> Sort of a quick reference thing. I will do it up in Excel and forward to
> anyone who would like a copy, as well Steve Allen may put it up
> on his site.
>
> Graeme, sorry to pick on you, but, since you seem to have a
> dismantled 1500
> handy, could I bother you for the deck height and piston pin height?
>
> Thanks everyone
> Daryl
> '66 1600
> http://www.311s.org/registry/1966/spl311-01605.html
|