intresting and simple manifold on ebay... questions about it.
05-20-2003, 02:51 PM
#13
3.0 BAR
Join Date: Dec 2002
Posts: 3,830
Re:intresting and simple manifold on ebay... questions about it.
a memeber of this board HAS used a manifold simualr too that i wont name names
Made with what was around the garage w/ a Jiggsaw, grinder, drill, and rental welder. 100% of the fab credit goes to my brother. I just made dumb jokes and blew smoke in his face
Circa 99' pics....
A V8 buddy didnt think it would work. Left his mark...
Turbo/mani test fit:
Getting....ummm....broke-in
I love digging up old pics.
Heres the finished homebrew victory beer on the mani shot.
One more...my Thunderbird IC before it hatched into the two core bastard it is now.
Yeah, the square log manifolds blow...duhhhh, but it worked, for 2 years of daily panty tearing. God I wish I knew what the HF mani looked like then. We tried to find a VX? mani the day before cause' we knew it terminated up high, but whatever. Good times.
05-20-2003, 11:28 PM
#16
1.0 BAR
Join Date: May 2003
Posts: 468
Re:intresting and simple manifold on ebay... questions about it.
hahaha
leed did you use the lincoln weldpak 100 from home depot? how thick are your pieces? mustve taken a lot of weld/grind/weld/grind?
at least yours has chamfered sides.. that ebay one looks like a winner, and for 330$ lol
leed did you use the lincoln weldpak 100 from home depot? how thick are your pieces? mustve taken a lot of weld/grind/weld/grind?
at least yours has chamfered sides.. that ebay one looks like a winner, and for 330$ lol
05-20-2003, 11:43 PM
#17
0.0 BAR
Join Date: Feb 2003
Posts: 0
Re:intresting and simple manifold on ebay... questions about it.
Log manifolds are constant pressure designs.
Tubular manifolds are constant flow designs.
Square/box or tubular weld el log style... neither one flows. They aren't designed to, they are designed to be a plenum for building pressure. The ubiquitous constant pressure (log) manifold is why traditional turbo theory goes for wide LSA and no overlap in camshaft design. Exhaust reversion is a bitch.
If you use a tubular manifold and peaky turbo like Todd/HiTech/FFGeoff/Kooks/Tinker/blahblahblah where flow is promoted and TIP (turbine inlet pressure) from the restriction that the turbine wheel represents is minimized, then a turbo engine starts acting strangely like a NA engine, and likes some overlap and a narrower LSA.
The next log manifold I make, I'm not playing around with a bunch of stupid expensive schedule 40 els. I'm reaching right for the 14 gauge 1"X2" RHS mild steel and not even worrying about runners.
Tubular manifolds are constant flow designs.
Square/box or tubular weld el log style... neither one flows. They aren't designed to, they are designed to be a plenum for building pressure. The ubiquitous constant pressure (log) manifold is why traditional turbo theory goes for wide LSA and no overlap in camshaft design. Exhaust reversion is a bitch.
If you use a tubular manifold and peaky turbo like Todd/HiTech/FFGeoff/Kooks/Tinker/blahblahblah where flow is promoted and TIP (turbine inlet pressure) from the restriction that the turbine wheel represents is minimized, then a turbo engine starts acting strangely like a NA engine, and likes some overlap and a narrower LSA.
The next log manifold I make, I'm not playing around with a bunch of stupid expensive schedule 40 els. I'm reaching right for the 14 gauge 1"X2" RHS mild steel and not even worrying about runners.
05-21-2003, 10:28 AM
#20
1.0 BAR
Join Date: May 2003
Posts: 468
Re:intresting and simple manifold on ebay... questions about it.
Originally Posted by Joseph Davis
The next log manifold I make, I'm not playing around with a bunch of stupid expensive schedule 40 els. I'm reaching right for the 14 gauge 1"X2" RHS mild steel and not even worrying about runners.
