Tony,
I think you are on the right track. I'm not certain how to best join
the tubes unless they continue all the way to the plenum. I think you might want
to check, I believe that the Renesis has 2 different size oval ports. The cosmo
engines, both the 13B and 20B certainly have 2 sizes. I also understand what you
mean about bending. There are many manufacturing companies that do oval tube or
rectangular tube bending. In industry we call it "bending the hard way" or
across the longer section. I think a really cool manifold might include a
1/4 twist before the top with the oval horizontal over the top of the engine.
Tony, I really like the idea of having oval stock available in either aluminum
or steel (thin wall). But truly I think it might be better to do composite
layups for the intake. Some of the higher temp versions could be used all the
way to the block.
The problem you face is that there are 2 types on the lists. The
firat are the technically compotent and building types who always think they can
do it better than the next guy. (but would buy the complete manifold if you
built it!) Then there are the dreamers or non-mechanics who can't fab
their own, and only want a complete manifold because that is what they need to
bolt on. I'd be careful about spending money until you had a group signed up and
ready to pay or better yet prepaid.
Bill Jepson
In a message dated 5/23/2007 5:02:25 PM Pacific Standard Time,
tonyslongez@cox.net writes:
Does
everyone understand what it is I'm trying to do with this intake tubing or am
I speaking greek? I'm so tired of P.L. and his inebriated remarks. I swear he
is on a binge right now.
Do we as a rotory community not need
this type of lite weight aluminum tubing that is perfectly matched to our
ports? I thought one of the big obstacals was our intake manifolds have things
changed and I wasn't aware? OR is everyone happy with using a Paul -Port.
Which by the way talking to Dave at Mazdatrix revealed several inconsistencies
in his P-port reporting.
This whole thing started becasue I can't find
a manifold that isn't a chunk of extruded hunk of aluminum that weighs more
than my car.
Seems easy enought to just weld four tubes of the correct size
to an aluminum plate. and that is it. We can mandral bend them have them
straight what ever. I guess I'm surprized by the groups reaction or lack
of.
Tony