[Fot] I cut intake & exhaust port sections today ( tr4 )

[Tim Murphy]

Fantastic pictures, thanks!!!  It looks like the exhaust charge would go up
that wall and around and out.  In other words it didn't look all that bad to
my "untrained" eye.  The photos really show the large amount cooling around
the exhaust valve guide and the small amount around the intake guide.  They
also show the benefits of cutting off the guides so they don't stick into
the ports.  Thanks again,

Tim

-----Original Message-----
From: fot-bounces at autox.team.net [mailto:fot-bounces at autox.team.net] On
Behalf Of Jim Gray
Sent: Friday, October 19, 2012 10:24 PM
To: fot at autox.team.net
Subject: [Fot] I cut intake & exhaust port sections today ( tr4 )

FoT,
I cut some TR4 port sections today, right down the middle of the valve
guides. It sure is a different view of the 

TR4 ports. The exhaust port is a mess. I'm going to try welding around the
back of the valve guide boss

and try to smooth out that wall the exhaust charge slams into just outside
the valve seat.

We'll find out on the flow bench, I have three more cylinders to experiment
with

 

Pix are on photobucket

http://s698.photobucket.com/albums/vv341/TR4jim/Cylinder%20head/

 

jim g
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