S54 Swap Header Feeler

[rkettner]

wow. that looks so damn cool.

[Ray Smoodiver]

Damn, those look amazing.

They also like they'd never fit a RHD car heh.

[89AlpineM3]

A couple more pics of the headers........

[gills]

Looking real good. He's has to come up with a bundle with the subframe/oil pan mod soon!

[nando]

these look pretty damn nice! price isn't bad either

what do the collectors look like? merge? triangle piece?

[E30Strube]

Nice work! They look great.

[Wh33lhop]

The quality and fab work look incredible, but these don't look even close to equal-length to me... I guess we are throwing that out the window when we are this tight on space?

[nando]

equal length really doesn't matter. pipe diameter, total length, weld quality and collector design will have a larger effect.

I wonder what the insides of the pipe welds on Ebay S54 headers look like. I bet it's not pretty.

[AndrewBird]

Why not a one-piece flange? Seems like one piece would be a lot less likely to warp over time. I'v personally experience a header warp when it had 3 individual flanges instead of a one-piece, and it wasn't a cheaply made header (ANSA).

[TinyT]

Hey guys. I'll be making a full announcement with pricing and details.

It's not worth the disruption in flow and the added cost to snake a bunch of pipes around for this equal length nonsense. Smooth transition and proper merge collector is much more important.

I'll make the announcement about them soon!


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[TinyT]

And if you can warp 3/8" 304 stainless flanges by just running the engine you need to adjust your timing


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[MyE30]

This is a really nice looking set of headers. It looks like the design is geared more toward fitment than performance. Have you considered designing headers that have equal length runners? You definitely have the skill to pull it off and the end product would be well worth the money, IMO.

[nando]

equal length doesn't really mean much.

[MyE30]

Perhaps, but considering the motor comes stock with equal length headers I figured the engineers felt there was value added in them. However, I am not a subject matter expert when it comes to the S54 that is why it was just "IMO".

nando, have seen any difference between ELH and non-ELH in relation to torque curves after tuning on the S54 or is it negligible?

[nando]

the stock headers are not likely to be equal length. I really, really doubt they are - maybe within a few inches. that is good enough.

do some research on headers. I mean a lot of research - primary length, diameter and the merge design are much more important than how close to equal length the primaries are. Most "equal length" headers are in fact not. My RD headers are +/- 3-4".

in fact having headers 100% equal length will narrow the effects of scavenging to a smaller band. slightly unequal length should actually widen the torque curve. few headers are actually 100% equal length - packaging makes it impossible mostly, and it just ends up not mattering all that much.