Punishment Racing Tubular Manifold

[tharaka]

God damn this thing looks amazing!

I want one!

http://www.punishment-racing.com/header.html

$650 USD

 

[JSTYLE]

650USD is abit pricey... add $110USD for freight then add customs and its near 1k.. AUD

Jon

 

[AUSVR4]

plus it looks like it will have some clearance issues

 

[GVR40]

i got a price on a stainless manifold today of 1500, so that is a pretty good price, looks nice i like it

 

[JSTYLE]

mmmmmm how bout this hot 4G93T manifold? under $700AUD

Jon

 

[CLuTZ]

Just wait 'till you see what some of the local guys can do!

 

[olly]

how much gain would you get upgrading to a tuned length manifold or to any aftermarket manifold?

 

[OFFON-4]

Just wait 'till you see what some of the local guys can do!

Doubt there that good :wink:

 

[Sylent Nyte]

Just wait 'till you see what some of the local guys can do!

Doubt there that good :wink:

Check the 6Boost stuff. Kyle's offerings are at least that good. :twisted:

 

[evopwr]

i never understood why they make these "tuned" manifolds??! i always thought the shorter an exhaust route, the less energy is consumed in releasing the exhaust gases...

must be something to do with the firing sequence of the engine.. 1-4-2-3 was it ??

 

[JayRome]

1 3 4 2

 

[EVO-00X]

Yeah the 1-3-4-2 sequence (clockwise direction) seems to be the preferred method of joining the runners into the merge collector. Others just go 1-2-3-4. What that means in the whole scheme of things I have no idea, maybe one variation is better than the other. Or maybe its too difficult to get runners close enough in a 1-2-3-4 sequence that 1-3-4-2 spaces them out from one another better? :? I'm outta my league on this one :lol:

 

[evopwr]

so wouldnt it make sence that the length of each exhaust port would be accoring to the firing sequence ??

ie: from shortest to longset port -> 1-3-4-2

it doesnt seem so in the pics.... seems port 3 is the longest.

 

[GVR40]

i never understood why they make these "tuned" manifolds??! i always thought the shorter an exhaust route, the less energy is consumed in releasing the exhaust gases...

must be something to do with the firing sequence of the engine.. 1-4-2-3 was it ??

yes and no, the exhaust gas has to be as free flowing as possible, the better the flow the more air through the exhaust housing the shorter spool time the easier revving. but in order for it to be most effective the pipes all have to be exactly the same length and have the same amount of restrictions and bends so that the airflow is constant, thats why they are tuned, so that there is a constant airflow and air speed across all 4 pipes and out the flange. someone will correct me if i am wrong tho

 

[evopwr]

yes and no, the exhaust gas has to be as free flowing as possible, the better the flow the more air through the exhaust housing the shorter spool time the easier revving. but in order for it to be most effective the pipes all have to be exactly the same length and have the same amount of restrictions and bends so that the airflow is constant, thats why they are tuned, so that there is a constant airflow and air speed across all 4 pipes and out the flange. someone will correct me if i am wrong tho

yeh i totally agree, but it some of those ports are clearly longer that others, hence higher restrction... thats why im confused :?

 

[JayRome]

best result would be port matched exhaust runners the same length..... free flow after the turbo......

 

[GVR40]

you don't want all the exhaust gasses getting to the exhaust wheel at the same time, it needs to be a constant flow, they spend lots of money and time working out the best setups for their manifolds, and i think if you measured all the pipes you would find them to be pretty close to the same length

 

[JayRome]

approx would be good enough plus space is an issue......

 

[EVO-00X]

You will see drag cars with super long runners and big ass turbos, and then others with short tight runners running medium size turbos. I honestly dont know the specifics of what is better or not, and whether turbo positioning and lag plays a big part in it as well, but there has got to be pros and cons of both methods. Someone like 6Boost who does this sort of thing for a living would be able to answer the questions :lol:

 

[evopwr]

you don't want all the exhaust gasses getting to the exhaust wheel at the same time, it needs to be a constant flow, they spend lots of money and time working out the best setups for their manifolds, and i think if you measured all the pipes you would find them to be pretty close to the same length

ahh this makes perfect sence i can se clearly now!

thanks man