Nathan's Road-Legal/Track BB4

Ferdie · Post by **Ferdie** » Tue Dec 31, 2013 4:07 pm

Nice nice !!!

The last photo what is that??

Post by **RattyMcClelland** » Tue Dec 31, 2013 4:19 pm

Plus is sqiggly wiggly. Thats always a winner.

mercutio · Post by **mercutio** » Tue Dec 31, 2013 4:28 pm

NafemanNathan wrote:
wurlycorner wrote:What is meant to be the benefit of the curly bits on these styles of manifold btw? What characteristics is it meant to give the power/torque curves?
It's still a little controversial as to whether the design is a winner, but the theory in my head is that it expels the gases a lot quicker. You know if you have a cola bottle and fill it with water to rinse it out? Say the bottle is half full... If you just tip it upside down, it takes ages for the water to glug out right? But if you put the same amount of water in the bottle and give it a quick spin as you invert it, the whirlpool effect makes the water pour out much much faster and much much smoother as well. I believe the curls in the manifold give the gases the same characteristics (Imagine a water park flue ride). And as all the runner's initial curls curl in the same direction as well, so it should make for a nice entwinement of gases at the -1 section.

plus its a way of having your cake and eating it longer primaries give different results to shorter ones it moves the peak power up or down the rev range and also changes the power/torque characteristics, but also having the same length secondary as a standard manifold means you lose no torque by going for peak power.

so ordinarily win win

there is a lot of math and gas science involved in a really good manifold and a bad one even a good looking manifold can lose you power rather than create it, its a minefield

to be tiptoed through

with a calculator

Post by **NafemanNathan** » Tue Dec 31, 2013 4:46 pm

Ferdie wrote:Nice nice !!!

The last photo what is that??

It's the downpipe to block bracket

...

K30DPC · Post by **K30DPC** » Tue Dec 31, 2013 5:55 pm

Nice mani and nasty oil leak

Post by **NafemanNathan** » Tue Dec 31, 2013 7:23 pm

Not my engine

fred_eg5 · Post by **fred_eg5** » Wed Jan 01, 2014 8:54 pm

very nice!

CrunchyAdams82 · Post by **CrunchyAdams82** » Wed Jan 01, 2014 9:20 pm

Looks sweet mate. You think it will be winging it's way around a track sometime this year?

Post by **NafemanNathan** » Wed Jan 01, 2014 9:27 pm

Nope!

eDaniel · Post by **eDaniel** » Thu Jan 02, 2014 9:16 am

K30DPC wrote:Nice mani and nasty oil leak

That's my oil pan gasket buddy

@NafemanNathan : Some erotic photos of your manifold coupled to my engine

http://www.extreme-tuning.bg/en/project ... xit-flange

P.S.: By the way, I bought that engine from the UK

Lude Generation

Nathan's Road-Legal/Track BB4

Re: Nathan's Road-Legal/Track BB4

Re: Nathan's Road-Legal/Track BB4

Re: Nathan's Road-Legal/Track BB4