Hiddey ho, everybody. Finally completed the Kraftwerks K-race kit install on my EG tonight. Gotta say, the brackets that mount the Rotrex blower to the block are very impressive, fitting perfectly and being built to very tight tolerances. The install instructions are also impressive in their completeness. Installing the Rotrex and it's separate oiling system was a snap. Edit: I opted for the C38-61 Rotrex with a TSX crank pulley and 100mm s/c pulley, after consulting with Oscar Jr. and Tony at Kraftwerks. They predicted 400whp at 10-11psi with this setup and as you'll see below, they were bang on.
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Fabricating the front mount intercooler system and figuring out how to make a full width rad fit was a bit trickier, but thanks to Sasha at SG Motorsport all these challenges were sorted out. Once the FMIC system was completed Sasha retuned the KPro on U2Ndyno.com's Dynapack (which reads a bit lower than the local Dynojets). Vibrant Performance (thanks Donavan!) provided the intercooler and all the tubing and couplers required plus one of their velocity stacks for the intake.
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FYI, the K24A2 block is 100% stock (other than the baffled pan and modified oil pump), the head is stock other than Skunk2 Stage 3 cams and valvetrain, and I'm running a DC Sports K-swap header and 3'' Vibrant exhaust along with a RBC manifold and 65mm TB. Although I ran 94 octane pump gas on the all-motor setup, I decided to step up to 104 octane race gas for a little extra detonation protection.
Tuning didn't take long, since the all-motor mapping was actually very close to what the Rotrex needed. No power was found by adjusting cam timing or ignition timing in the upper rpm range, though Sasha did find a bit of midrange power by adjusting ignition timing in that area and a little fuel was added throughout, of course. Here's the last pull, after Sasha added a bit of extra fuel and pulled a bit of timing for safety:
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I'll post some more detailed pics of the install later, along with a video clip of it rippin' tec on the dyno. The plan is to track test it on Sunday. Can't wait!
Fabricating the front mount intercooler system and figuring out how to make a full width rad fit was a bit trickier, but thanks to Sasha at SG Motorsport all these challenges were sorted out. Once the FMIC system was completed Sasha retuned the KPro on U2Ndyno.com's Dynapack (which reads a bit lower than the local Dynojets). Vibrant Performance (thanks Donavan!) provided the intercooler and all the tubing and couplers required plus one of their velocity stacks for the intake.
FYI, the K24A2 block is 100% stock (other than the baffled pan and modified oil pump), the head is stock other than Skunk2 Stage 3 cams and valvetrain, and I'm running a DC Sports K-swap header and 3'' Vibrant exhaust along with a RBC manifold and 65mm TB. Although I ran 94 octane pump gas on the all-motor setup, I decided to step up to 104 octane race gas for a little extra detonation protection.
Tuning didn't take long, since the all-motor mapping was actually very close to what the Rotrex needed. No power was found by adjusting cam timing or ignition timing in the upper rpm range, though Sasha did find a bit of midrange power by adjusting ignition timing in that area and a little fuel was added throughout, of course. Here's the last pull, after Sasha added a bit of extra fuel and pulled a bit of timing for safety:
I'll post some more detailed pics of the install later, along with a video clip of it rippin' tec on the dyno. The plan is to track test it on Sunday. Can't wait!
