I started the MarKI Collector for the RB Road Race header

 

Making do with some materials around the shop. I used 2 1/2" vice the 2" I would have preferred

 

Tacked and ready to trim

 

Nice job! So, what is the equation for finding the rpm to tune the collector location for? I have read that collecting further away tunes for higher rpm, which is the opposite for tuning a restriction point (ie. tuned pipes on two stroke engines). I have also heard that the RB collected header is tuned for street use (midrange).

 

trimmed and welded

 

with the collector pipe. It is oval into the 3" inlet for the SPINTECH muffler. Yep... I hear ya'll scraming:"ITS TOO BIG!!!!!". I know I'm experimenting. IF it sux, the components will work on the turboII.

 

sweet!

 

Not bad.I should build one of those at the fab shop I work for. I'm only there 7 days a week 10 hours a day.

 

Dyno test of this beast suxor!



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