RPM Parts & Performance

Dylan's badass 80 series Cruiser went on the dyno last week for a tune up by Jeff at power managemnet solutions

Dylan recently completed a blower upgrade from his previous Magnuson Hearbeat 2300 to one of Harrop Engineering's 2650i Race-Port units. Along with Harrops Billet Fuel Rails and a full LSA front drive assembly that is setup with an 18% lower and an 80mm Top Pulley. The blower currently runs their standard 4-bolt throttle body snout with a new Nick Williams 102mm T/B as an upgrade from his previous stock 92mm T/B.
The engine itself is a stock-bottom-end L77 6.0L with a Crow 1287 camshaft and the usual Valve Springs, ARP Head Bolts and Oil Pump etc and behind that is the factory 5spd Manual Gearbox fitted with an NPC H/D Clutch and the factory 80-series diffs.

Engine management on this one is a FuelTech Australia FT550 and to go with this new combo the guys fitted and wired in a factory LSA bypass-valve control solenoid so we could tame it down to keep the little 6.0L happy. Which we used a common Boost vs RPM vs Ethanol Content control strategy to limit boost on 98 octane aswell as at low RPM and gradually increase it as Ethanol Content approaches 70% which is where it will see full boost.

So with it all bolted onto the hubs it copped a fresh set of plugs gapped down and a fuel pressure sensor supplied and installed and it was time to rev it up. Starting with 98 pump fuel and tuning various Ethanol Contents all the way to a max of E70%.

575rwhp@6400rpm on 10psi boost and 98pulp!
814rwhp@7000rpm on 19psi boost and E70!

Rhys's LX Torana back on the dyno!

This time it was back with the Waterman cable drive mechanical fuel pump back in it to eliminate the chance of any fuel supply issues as well as the full exhaust getting the flick again in favour of the race-trim side pipes!

With all that sorted it really allowed those twin Turbosmart 6870C's to come to life on the Warspeed Dart 388ci LS combo without even breaking a sweat!

Thanks to jeff at Power Management Solutions!

1408rwhp@7750rpm on 30psi boost and E85!