I'm using forklift pistons in a stroker and they work fine. Much increased
torque. The forklift people sell rings and bearings from companies like
clevite, and others. Why should roadster parts cost more than other engine
parts? I went with the dished pistons due to the increased compression from
a longer stroke and milled head. I also used standard 1600 carbs, with
special needles and nozzles. Possibly at a lower altitude this combination
would not work, I'm at 6000 feet .
Mike Koken
----- Original Message -----
From: "Jim Cawrse" <nqrithjim@hotmail.com>
To: "Adam Bradley" <ambradley@attbi.com>; "mike datsunman"
<datsunmike@nyc.rr.com>; <andycost@att.net>; "Datsun Roadsters"
<datsun-roadsters@autox.team.net>
Sent: Monday, August 26, 2002 5:57 PM
Subject: U-2100? flat top pistons, or what
> Flat Top pistons are what my car has. I think the fork lift pistons
> might actually be dished. Happy to invite comments on this,
> I know for a fact that my car is .040 overbore, stroker,
> and flat pistons, and runs quite fast, no spark knock
> with 20 deg initial advance, as long as I run best
> gas I can find, and an occasional bottle of
> octane boost juice.
> Best Regards,
> Jim
> Chesapeake, Va
>
> ----- Original Message -----
> From: Adam Bradley
> Sent: Monday, August 26, 2002 6:00 PM
> To: Jim Cawrse; datsunmike@nyc.rr.com; andycost@att.net;
> datsun-roadsters@autox.team.net
> Subject: Re: U-2100?
>
> www.motorpowerinc.com sells H20 pistons in .060 overbore for under $16
> each. Assuming same stroke as U20, what would an .060 overbore give us in
> terms of total displacement? I realize these are probably flattop
pistons,
> but that might be a good thing if we're cramming that much more stuff into
> the compressed area...
>
> At 04:35 PM 8/26/2002 +0000, Jim Cawrse wrote:
> >This is IRT the crank grinding question
> >Just like anything involved with horsepower, it depends
> >on how much money you have. I know the 1600/2000
> >stroker will live quite happily with .040 overbore, I would
> >think this would be the road to go before
> >fooling with the crank. I will have to get
> >the formulas out to find out how much
> >this gives, but would SWAG it at
> >2100 or therabouts on a 2000 stroker.
> >Plus, bigger piston
> >squishing same combustion chamber means
> >higher compression.
> >Best Regards,
> >Jim
> >Chesapeake Va
> >67 pushrod 2000/5spd
> >72 510 sportwagon
> >
> >PS:
> >SWAG equals
> >scientific wild ass guess
> >
> > >From: "datsunmike" <datsunmike@nyc.rr.com>
> > >Reply-To: "datsunmike" <datsunmike@nyc.rr.com>
> > >To: "Andy Cost" <andycost@att.net>, <datsun-roadsters@autox.team.net>
> > >Subject: Re: U-21
> > >Date: Sun, 25 Aug 2002 16:29:51 -0400
> > >MIME-Version: 1.0
> > >Received: from mc1-f22.law16.hotmail.com ([65.54.236.29]) by
> > >mc1-s6.law16.hotmail.com with Microsoft SMTPSVC(5.0.2195.4905); Sun, 25
> Aug
> > >2002 13:35:17 -0700
> > >Received: from teamfat2.dsl.aros.net ([207.173.21.42]) by
> > >mc1-f22.law16.hotmail.com with Microsoft SMTPSVC(5.0.2195.4905); Sun,
25
> > >Aug 2002 13:34:29 -0700
> > >Received: (from majordom@localhost)by teamfat2.dsl.aros.net
> (8.11.0/8.11.0)
> > >id g7PKUAt07139for datsun-roadsters-actors; Sun, 25 Aug 2002 14:30:10
> -0600
> > >(MDT)
> > >Message-ID: <002d01c24c76$2a5bb3e0$15385a18@nyc.rr.com>
> > >References: <001301c24c69$ae84efe0$2b11530c@cost>
> > >X-Mailer: Microsoft Outlook Express 6.00.2600.0000
> > >Sender: owner-datsun-roadsters@autox.team.net
> > >Precedence: bulk
> > >Return-Path: datsun-roadsters-owner@autox.team.net
> > >X-OriginalArrivalTime: 25 Aug 2002 20:34:29.0254 (UTC)
> > >FILETIME=[CF98BA60:01C24C76]
> > >
> > >How about just boring the motor. Nissan does make sleeves for the
engine
> so
> > >you can bore it as large as possible and install sleeves if the casting
is
> > >crappy or cylinder walls are thin.
> > >
> > > Cheaper and easier as you'll have to get custom rods also.
> > >
> > >Mike
> > >
> > >
> > >----- Original Message -----
> > >From: "Andy Cost" <andycost@att.net>
> > >To: <datsun-roadsters@autox.team.net>
> > >Sent: Sunday, August 25, 2002 3:00 PM
> > >Subject: U-21
> > >
> > >
> > > > Has anyone tried to offset grind a U-20 crank? My estimate is about
> > >100cc
> > >for
> > > > each 1mm offset ground. What is the limiting factor here?
> > > >
> > > > Thanks,
> > > >
> > > > Andy
> > > >
> > > > /// datsun-roadsters@autox.team.net mailing list
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> >
> >
> >
> >
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> Adam Bradley
> '70 Datsun 1600 Roadster SPL311-28181
> '67 Datsun RL411 SSS sedan RL411-11321
> '66 Datsun PL411 sedan PL411-022447
> http://www.picturetrail.com/abend
>
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