Need some help.....need some ovalized tubing for a TP intake.October 6 2017 at 3:55 PM
|Brent Lykins (Login blykins)|
Having trouble finding sources, can someone point me to something?
Found this with a Google search
|October 6 2017, 4:02 PM |
Sorry, should have been more clear....
|October 6 2017, 4:17 PM |
Tubing for the pushrod tubes. The tubes that are in it are about 5/8" in diameter. They need to be ovalized so that I can have some more pushrod clearance. As of right now, when I roll the engine over with the intake sitting on there unbolted, the pushrods will move the intake up and down.
Brent I made mine out of aluminum tubing. I used to have pics, but Photobucket has them...
|October 8 2017, 7:32 PM |
I looked at the factory tubing, and it was nothing more exotic than just plain aluminum.
So I headed to Lowes Home store, and bought the same tubing as the old, then shaped it in a vice.
I then elongated the holes with a dremel tool, and had the tubes half welded, half epoxied in.
Even then I still had to clearance the holes just a bit so the pushrods would clear.
|October 6 2017, 4:56 PM |
Rumor had it that Holman Moody developed a wing shaped pushrod tube for their NASCAR tunnel ports.
Having access to a Superflow, I made wings for the port I was flowing by folding sheet metal around
the tube, and was rewarded by a 20+ increase in flow. Don't know how that might affect wet flow, but
dry flow sure liked the wing. Don't know how H-M accomplished the wing shape, but a tapered die could
be made up to reform round tubing AND give the needed clearance.
Re: Pushrod Tubes
|October 6 2017, 5:51 PM |
I have always used aluminum tubing and just pressed it into an oval shape in a vice then tig it in place.
(Select Login johnvermeersch501)
Brent, I just flattened tube, a press or
|October 6 2017, 5:52 PM |
vice works....the available oval tube is too much like an airfoil......
Re: Brent, I just flattened tube, a press or
|October 6 2017, 7:25 PM |
The o=teardrop shaped is called Wing Strut tubing. I could only find steel . It is simple to flatten 3/4" aluminum a bit in a vice or hammer. You are only needing 3" long pieces.
|October 6 2017, 9:16 PM |
Re: Tubing ..
|October 6 2017, 11:09 PM |
Own a beadroller?
|October 6 2017, 9:29 PM |
A simple set of homemade or modified dies and you can consistently form round tubing into oval or teardrop"streamline"/"slimline" tubing as well as any variant there of. Also try K&S precision metals and similar supply houses for full size and model aircraft for small aluminum streamline and oval tubes..
I agree with JV modify some larger diameter....
|October 6 2017, 9:30 PM |
tubing to form an oval shape. You can go much bigger if you are worried about pushrod rod to tube interference and it will still be much better than the stock smaller cylindrical shape.
I make them like the blue pic.....
|October 6 2017, 10:13 PM |
I start with a larger diameter solid plug. Offset the location to get the hole in the right place. Then I mill two sides like a dumbell, leaving the top and bottom round. Then shape the wing, position, and weld in. Then go back and machine the oval hole as required. It makes a nice winged shape just like the blue pic above, and the slotted hole inside. Not cheap but it is the right fix.
Re: Pushrod Tubes
|October 7 2017, 7:30 PM |
My Tunnel Port had the wing tube .My heads were used for a Nascar racer back then I used my eng on the street worked OK.
I'm pretty sure I have some airfoil tubing left that I used for this in the past. Drop me
|October 7 2017, 4:53 PM |
a message if you're interested in what I have. I recall the stock tubes fit snugly right inside this, so relatively easy install
|This message has been edited by dcmgt on Oct 7, 2017 4:55 PM|
Can you shoot me an email?
|October 7 2017, 5:55 PM |
Air flow behavier
|October 8 2017, 6:42 AM |
Very interesting video
|October 8 2017, 8:46 AM |
Well worth the time it took to watch it.
1966 7 Litre Convertible
1959 F-100 (under construction)
2005 GT40 (in my Dreams)
I put the length of TP PR airfoil tubing on ebay
|October 9 2017, 8:13 AM |