Tony,

I think you are on the right track. I'm not certain how to best j= oin=20 the tubes unless they continue all the way to the plenum. I think you might=20= want=20 to check, I believe that the Renesis has 2 different size oval ports. The co= smo=20 engines, both the 13B and 20B certainly have 2 sizes. I also understand what= you=20 mean about bending. There are many manufacturing companies that do oval tube= or=20 rectangular tube bending. In industry we call it "bending the hard way" or=20 across the longer section. I think a really cool manifold might include= a=20 1/4 twist before the top with the oval horizontal over the top of the engine= .=20 Tony, I really like the idea of having oval stock available in either alumin= um=20 or steel (thin wall). But truly I think it might be better to do compos= ite=20 layups for the intake. Some of the higher temp versions could be used all th= e=20 way to the block.

The problem you face is that there are 2 types on the lists.= The=20 firat are the technically compotent and building types who always think they= can=20 do it better than the next guy. (but would buy the complete manifold if= you=20 built it!) Then there are the dreamers or non-mechanics who can't fab=20 their own, and only want a complete manifold because that is what they need=20= to=20 bolt on. I'd be careful about spending money until you had a group signed up= and=20 ready to pay or better yet prepaid.

Bill Jepson

In a message dated 5/23/2007 5:02:25 PM Pacific Standard Time,=20 tonyslongez@cox.net writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Does=20 everyone understand what it is I'm trying to do with this intake tubing or= am=20 I speaking greek? I'm so tired of P.L. and his inebriated remarks. I swear= he=20 is on a binge right now.

Do we as a rotory community not ne= ed=20 this type of lite weight aluminum tubing that is perfectly matched to our=20 ports? I thought one of the big obstacals was our intake manifolds have th= ings=20 changed and I wasn't aware? OR is everyone happy with using a Paul -Port.=20 Which by the way talking to Dave at Mazdatrix revealed several inconsisten= cies=20 in his P-port reporting.

This whole thing started becasue I can't=20= find=20 a manifold that isn't a chunk of extruded hunk of aluminum that weighs mor= e=20 than my car.
Seems easy enought to just weld four tubes of the correct=20= size=20 to an aluminum plate. and that is it. We can mandral bend them have them=20 straight what ever. I guess I'm surprized by the groups reaction or lack=20 of.

Tony