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Jim, by all accounts, it looks like my first 1986 13B NA engine never
produced more than 140 HP at best. Some indications that it might have
been closer to 120 HP before I took the racing manifold and set up off.
Racing manifold only hurts unless you can turn racing rpms - and I couldn't with
the prop load.
Its hard to say how much the porting gave me since I did it on a 1991 turbo
block, but the new engine produces in the vicinity of 180HP, a bit more on cold
days, a bit less on hot days.
How much credit to give to porting, well, not certain but I would think
15HP would not be a wild estimate - perhaps a bit more.
Ed
----- Original Message -----
Sent: Sunday, December 14, 2003 9:22
PM
Subject: [FlyRotary] Re: Pre-rebuild
thoughts
Ed,
What do you think it bought you in the way of HP?
You estimate you started out with ??? and ended up with ??? after porting...
Seems like a fairly simple, easy way to buy myself 10-20 hp ... Jim S.
Ed Anderson wrote:
I used the Racing Beat Porting templates on my 91 turbo II and am pleased
with the results.Ed Anderson
RV-6A N494BW Rotary Powered
Matthews,
NC
eanderson@carolina.rr.com
----- Original Message -----
Sent: Saturday, December 13, 2003
2:54 PM
Subject: [FlyRotary] Re: Pre-rebuild
thoughts Guys, I'm going to work on rebuilding an 88 13B 6
port between Christmas and New Years. I'm thinking about porting it. Do
you recommend buying/using the Racing Beat porting templates? It's for use
in a car--at least until I get an airframe. If I decided to get more
ambitious in my porting, what are the lowest idle speeds one can get with
a semi-or full bridgeport? Or am I really best off sticking with what
Racing Beat calls the "streetable" port job? Barry GardnerWheaton, IL
--
Jim Sower
Crossville, TN; Chapter 5
Long-EZ N83RT, Velocity
N4095T
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