flyrotary@lancaironline.net Mailing List Archive

Turbocharger Hiflows 12A 13B Series IV & V

Rusty, here is some interesting stuff from down under. Stock wastegate ported to minimize boost at low rpm and bring it on at higher rpm. This is the route I am planning on going whereever I get this 4th manifold done and satisfied with - probably way in the future {:>).

As I recall for an exchange turbo the cost was only around $380 USD for both new wheels and ported housings. The technical papers from Mazda on the turbo indicates they worked hard to get a desgin that brought on the boost at LOW rpms. Just a thought.

FWIW

Ed Anderson

12A & 13B Series IV & V

No Modifications Required - Bolts Straight On!
Factory Hybrid HiFi Sleeper!
Looks factory but internally supplies up to a 100% HP Gain at 15 PSI Boost!

	Recondition, blueprint & performance balance to < 1/2 factory spec. your existing HT18 turbocharger.
	Fitted with an ATS modified T4 HiFi Compressor Wheel rated at 375-575 BHP.
	Profile Machine the Compressor Cover & Back-plate to suit the new HiFi Wheel & dramatically increase the air-flow capability of the cover which not only increases air flow by aprox. 100% but also helps lower critical inlet manifold temperatures.
	Radically back-cut the Turbine Wheel & enlarge the Turbine Housing Exducer to increase exhaust gas "dump" & reduce exhaust manifold backpressure.
	Modify the swingvalve choke to resist over-boosting.
	Optional Polished Compressor Cover at no extra cost.