How the History with RPM Engines and HOOHAA started:
In 2014 HooHaa was presented to RPM Engines (back then JC's engines) fresh with a few dropped valves and some internal engine damage after a track day at lakeside.
She had a Harrop 2.3L super charger a whopper of a cam and off Her very very chops! From what we were told a 530rwhp power house by HooHaa's mum and dad.
So Back then we went all out with the good parts. 0.005" srp forged pistions, down the camshaft to a nice comfortable lunati voodo cam package new inlet vavles, new push rods, some tye-bar lifters, crank lynish, new race series bearings, hi volume oil pump and engine balanced. Then a nice Dyno and tune.
For the Next 7 years to come HooHaa Terrorised the Car meets, track days and the streets at an awesome 642.5RWHP.
Stepping forward 7 years HooHaa's Daddy called us at the end of 2021 and expressed he thought HooHaa was a little sick ( and not like in the Fully Sick, fully hectic type of way ).
So at the Start of 2022 we got her into the shop and worked out there are a few noises. Not normal to how the hi powered monster usually sounds. we had many different moans and groans and the charger sounded a bit worse for ware also. As we removed the engine and stripped her down. we found the main problem being the tye-bar lifters one had turned, jammed and did not tye bar anymore.
she had ground the lifter down and put some extreme metal through the engines oil system. damaged the camshaft scored the crank with metal not to mention all of the other areas that had been affected.
So the time around our client expressed he had his fun but it was time to make here bullet proof. As a safe everyday turn key.
So the new 2022 Build went alot differently in some ways, we sat down with all of our new components and advanced improvements in technology since 2014.
Deciding to run a 0.010" 15cc dished piston to decrompress the engine and some Cometic metal shimed head gaskets. ( this allowed us to machine face the engine block .003" per face and take .005" off each head face to clean them up.) Now we have a calculate compression of 9.9-1 from a previous 10.8-1.
Going with a new Lunati cam package, but so impressed by the original set up, used the same cam specs kept the same duration cam. New crow rocker trunnion up grade, New ls7 lifters and new gm lifter retainer kit. New Gm Timing chain kit and guide tensioner. New hi volume ls3 oil pump, in the process also nice new eagle con-rods and the crankshaft ground with new 0.010" undersized race bearings. Once machined and reassembled. we finished her of in a gum metal grey machine coat.
The Supercharger was a concern as the engine was not the only part of this beast making noises.
We stripped her down and cleaned internally checked the blades and replaced all bearings. pressure tested the coolers andre assembled her on the bench. refilled her new oil & set the belt tension.
Now all back together We put her on a tow truck to M-tek https://mtekautoservices.com/ for Michael to wave his computer magic. what we did not expect was the result on the Dyno, after calculating making HOOHAA the safer street build. she ran a whopping 659.6rwhp.
Have to say i was expecting low 600's.
Michael's Thoughts and recomendations as the Dyno wizard he is would be 700+rwhp with a better and upgraded fuel system the potential is endless.
My Thoughts as the engine Builder and machinist i was stoked with the outcome overall it is a very proud and humbling time when you see engine components and your caculations all work together after putting so much time and effort into what we do. I am in awe of my team at www.rpmengines.com.au for their efforts and input on this build also.
Lance Blissett ( RPM Engine Reconditioning and Mechanical )
With Special appreciation and thank's to my whole team who worked on HOOHAA, Mark Stallan, Blake Trotter, Zac Gentle.
Additional thankyou to:
Jas ( for the opertunity and trust )
M-Tek ( For Dyno Tuning )
K.T.S towing service. ( big Kev )
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