"Hall, Phillip" wrote:
> Mike, Pat, all
>
> I will also build a R20 this winter for my '66. From the smart ones on this
> list I have gathered the following. Please, please correct if wrong.
>
> Use the flat top u20 pistons for street. Compression ratio should be about
> 9.5/1 with new head
>
> Use R16 intake with larger U20 SU's and port/taper the spacer for the larger
> carbs.
>
> Use a good R16 header
>
> The U20 crank will have to have a key way machined in, which I heard can be
> expensive. I have not checked on this yet. Or, use a H20 forklift crank -
> or the whole short block with U20 pistons
>
> HP should be about 125 to 135.
>
> To me this should be a simple change - like always - if it looks too simple,
> it will bite you later. I you guys can recall I plan on turbocharging my
> motor so I will do other mods. OK smart ones on the list that has done this
> - your turn.
>
> Happy Roadstering
> Phil
> SEROC
>
> -----Original Message-----
> From: Patrick J. Horne [SMTP:horne@cs.utexas.edu]
> Sent: Monday, July 10, 2000 10:26 AM
> To: Mike Poorboy
> Cc: datsun-roadsters@autox.team.net
> Subject: Re: Stroked R-16
>
> I have been thinking about building a R-20 also. Has anyone given
> thought to the carb changes
> that will be needed? I have a complete U-20 exhaust system and a
> header on it, but don't have
> any idea if all I need to do is replace the needles, or if the carbs
> would be too undersized
> to work well. This engine is for street use.
>
> Peace,
> Pat
>
> --
> - Support Habitat for Humanity, A "hand up", not a "hand out" -
> Pat Horne, Network Manager, Shop Supervisor, Hardware Guru
> CS Dept, University of Texas, Austin, Tx. 78712 USA
> voice (512)471-9517, fax (512)471-8885, UUCP:cs.utexas.edu!horne
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