Custom Header Design Opinion

[dipsticktuning86]

Hi guys i need your opinion on the header design. what do you think?

im doubting the long secndary runner *the not so straight one* do you think it will affect exhaust flow?

Primary is 2.5"
secondary is 1.75"

Thanks for your opinions.

[wulfgang]

ok, I'll bite.

1. It's a UEL, so why are you worried about the longer pipe? In a UEL, it is pointless to make the pairs of primaries the same length; it provides no theoretical advantage whatsoever. Or are you more worried about the tighter turns in that long pipe? To my eye, the turns do not look nearly as restrictive as the turns in the two short primaries, so I think it's ok.

2. Why 1.75" primaries? I know the shops will push for large primaries, but the pro header shops are all going to tell you that's too large.

3. Put double slip joints in the two long primaries and leave a 1-2 mm gap for expansion.

4. Nice work, I love it!

[dipsticktuning86]

@wulfgang Thanks for the response. and i appreciate your opinion and of course the complement! , hmmm.. 1.75 primaries since ive seen 2 or 3 headers from different companies running them giving good hp increase.