I have a 16ga manifold project coming up, and need to know what size tube would form to fit a standard T4 flange the "best"?

Thanks!
Bryson

 

Just wondering what someone has used and prefer to use.

 

Are you talking about making a merge collector, or just what diameter tubing fits the T4 opening the best? I'm confused.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sharkytm &raquo;</TD></TR><TR><TD CLASS="quote">Are you talking about making a merge collector, or just what diameter tubing fits the T4 opening the best? I'm confused.</TD></TR></TABLE>

The merge collector will have a 90deg bend off of it going into the flange. thus I need to know what size tubing can be "formed" to the T4's opening.

 

A pic of what I'm talking about. This is an EVO header that tony did a while back. I sent him a pm.

 

just do the math, figure out the perimeter of the t4 opening (234.228mm) now just pick up some pipe that has an id with the closest circumference. 3" 16g pipe has an id circumference of 229.495mm so that is probably as close as you are going to get.

 

use 2.75"
bend the 2 long sides flat with a vise tack them on flange, get hammer and start working the shorts sides till they come flat and tack them, wahla
If you use 2.5" it will be small and fit inside the flange use a ball peen hammer to form the small areas out to fit the flange

-James

 

2.75" will be too small for a t4 james... it may work for a t3 though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by weiRtech &raquo;</TD></TR><TR><TD CLASS="quote">2.75" will be too small for a t4 james... it may work for a t3 though.</TD></TR></TABLE>

You can make 2.75 work for a t4...ive made 2.5 work.

You can also buy tubing flared to t4 or t3 inlet sizes. I believe that is what Tony used in that pic

 

http://store.racing-solutions.org/2tot4tr.html
that place sells 2.5 and 3''. So I guess you can make either work.

 

Mine was 2.25", Burns made it. I'd never go any bigger than 2.25" tubing before the turbo. That would kill the velocity. We don't have 6+ liters of **** to fit through there! lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by swappedcx &raquo;</TD></TR><TR><TD CLASS="quote">http://store.racing-solutions.org/2tot4tr.html
that place sells 2.5 and 3''. So I guess you can make either work.</TD></TR></TABLE>

And the one from burns fits a hell of a lot better than the one in that pic. It's a perfect fit.

 

 

Makes me wonder why the inlet to almost every turbine housing made is even rectangular to begin with... why don't they make them circular?

If I made a turbo manifold out of square tubing you guys would laugh your butts off (yes, it's been done before) yet almost every turbo forces the air to transition from round tube to square inlet. You'd think Garret or someone would have changed that over the years.

Any ideas why?

Fred

 

Yeah, doesn't make much sense, huh? lol The HKS T51R turbine housings are a round V band inlet. I've also heard that TiAl is about to come out with some stainless steel V-band inlet housings for the GT40 and GT42 stuff. The rectangular housings probably have something to do with keeping the airflow at it's ideal entry angle into the housing and turbine wheel. If the flange area was round, it would eventually have to work back towards a rectangular shape near the turbine because of the width of the turbine wheel.

 

Thanks a lot tony! I'll definetly be getting one from burns.