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
|