5. BLUEPRINT RBC +5.3HP +1.3TQ BluePrint Racing is one of the highest regarded K-series engine building shops known. They offer services such as their popular "BluePrint intake manifold" which is a thorough port job on the RBC intake manifold. Their port job is geared towards the big boy K24A engine builds. The BPR port job requires the cutting and opening of the RBC plenum so the runners can be accessed more easily. Porting is performed and once done, the cut plenum piece is welded back into place. We compared the BPR graph to the stock RBC and there were significant low to mid-range power gains made over the RBC, yet top-end was only slightly better. If my K20R were cammed I'm sure the BPR manifold would respond even better.We compared the BPR graph to the stock RBC and there were significant low to mid-range pow 6. RAA MANIFOLD -10.5HP +7.4TQ The 2-piece "RAA" intake manifold is found on the '02+ CRV, '03+ (4cyl) Honda Accord and '03+ Element. It is very similar to the RBB TSX manifold design, but has a smaller plenum and a 60mm throttle-body hole in comparison. A lot of Accord/CRV/Element owners upgrade to the RBB manifold because of the larger plenum, which shows some healthy torque gains. Curiosity made me want to see what kind of power this piece would produce on a K20A engine. This RAA was left completely stock except for the throttle-body hole, which was opened up to 70mm. At the end, the final tuned calibration was close to what the RBB was set to in terms of fuel, ignition and cam angle. The RAA makes decent torque as it stands, but lacks in the horsepower department. Perhaps an Endyne port job could bring the RAA horsepower up to a feasible level!At the end, the final tuned calibration was close to what the RBB was set to in terms of f 7. RRC MANIFOLD +14.5HP +8.6TQ The "RRC" manifold is found on the JDM '06+ Civic Type-R (FD2) K20A engine. Physically, the RRC looks almost identical to that of the RBC but has some significant differences upon closer inspection. On top of costing almost double what the RBC is, the runners are wider and a bit longer and the plenum seems to have more of an oval shape (internally) versus a rounder shape. There is a lot of hype surrounding this manifold on the forums and I wasn't sure why. I gratefully thank K20A.org member 6spd_EK (Greg) for lending me his RRC for this test as I had no other access to one. As mentioned earlier, there is no IACV port on this manifold, so one had to be created for the IACV to work. Luckily Greg already had this pre-done for me! Once installed with 64mm throttle-body and using the tuned Skunk2 calibration, baseline run produced 214.3whp/144.81tq. Erick worked his magic and reworked fuel/ignition timing/and cam angle and power gradually increased up to 223.9whp/148.9tq. This was the best he could tune with the 64mm t/b. We moved onto the 70mm t/b and power was almost identical to the 64mm t/b except top-end power falls earlier right around 8500rpm. Erick played with fuel and cam angle some more and hit 226whp/150tq while fixing top end loss! He felt he could get a little more cowbell from this manifold and in the final pull was able to hit 228.5whp/152.6tq -- just amazing! Not only did Erick reach 228whp but he managed to reach the 150+ torque range, touching on the RBB's torque output! RRC hype understood. SOURCES: Erick's Racing Engines - www.ericksracing.com K20A.org & K20A.org members - 6SPD_EK (greg),PB16B (Suja1) & KON - www.k20a.org Robert Green Ben@BluePrint Racing - www.blueprintracing.com Blox Racing - www.bloxracing.com Karcepts - www.karcepts.com A/Q Motorsports & Ryan Novak Endyne Energy Dynamics - www.theoldone.com JHPUSA - www.jhpusa.com K20Mart - www.k20mart.com Skunk2 - www.skunk2.com « | 1 | 2 | 3 | View Full Article By Katman Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!
