Miata jdm engine11/19/2023 ![]() Tech will print and add this to our binder. The ITBs were borrowed from Toyotas 4AGE inline-four ( another engine that. Including a pint-sized, mid-engine alternative to the Miata: the Honda Beat. According to the build specs on YouTube, this engine makes 172 horses from 1.6 liters at an 11.3:1 compression ratio. But, as with the first Civic Type R and Nissan Skyline GT-R, some sporty JDM cars are only now becoming available in the US. It's 145ps which is 143hp when converted. The S2000 competed directly with the Miata, and the NSX proved that supercars could genuinely be daily-drivable. RESPONSE: I found Mazdas official power rating from Japan: It produced between 156-158hp at 6,500rpm with 139-140lb/ft torque at 4,000rpm and a redline of 6,800rpm. Make the best effort to validate the claim of horsepower increase at or under the 3% max. This engine was only ever featured in the JDM-model Honda Stream for the 2001-2006 model years, in both FWD and AWD applications. If not you need to claim points on the intake, cam, and header.Īs well I have websites talking no hp gain, 3 hp, and 9 hp. You must have a full JDM engine swap (and claim it), plus proof of purchase of a complete engine and number match to use the JDM square top intake, JDM cam, and JDM 421 header. ***NOTE: The JDM 90-00 motor includes a VICS Manifold NOT SQUARE TOP, and we've been running the VICS not Square top, but we improperly identified it as a square-top previously. We're investing a lot in these races and I want to be sure we are 100% legal. If you can let me know ASAP it would be greatly appreciated as we are in the final stretch before Road America. There are a lot of these on eBay and they are easier to source than the USDM motors, which is why we got it to start. We do not see our JDM engine performing better than the USDM motor. We've confirmed that teams with NA8 (1997) engines dyno'ed in the 145s and we expect the USDM 99-00 motor to hit 150-160 since it has a much better head design. We've freshened the engine and we had the following Dyno results:ĭynoed at: 151HP with Pulley and SD exhaust (Before Road America)ĭynoed at 132HP w/o pulley and bad self-tune (After Sebring)ĭynoed at 145HP with custom exhaust and good tune (Before Road Atlanta)ĭynoed at 133HP with exhaust cam retarded a tooth and valve spring issues (Before VIR)ĭyno TBD - Added Port and Polish - 21" Intake (The goal is to hit high 150's) JDM Honda K24A VTEC Engine RBB iVTECJDM Honda K24A Engine RBB-3 06-08 Acura. It also includes a square-top intake manifold, and 4-2-1 header, although the engine usually only comes with a 4-2 portion. JDM Mazda Miata 1990-1993 1.6L B6 Engine and 5 Speed Transmission Complete and Extremely Clean Motor setApprox 59K MilesComplete Engine with 5 Speed Manual. Miata Power Upgrades Why did I go with a K-swap. Exhaust cam, pistons, rods, head, block, and everything else in the long block is identical to USDM. It includes a BP5A cam vs BP4W, the BP5A is advanced 2 degrees but the same lift and duration as the USDM cam. It was brought to my attention that it may not be and I wanted an official ruling. I wanted to confirm that a JDM Mazda Miata engine (99-00) is allowed under the swap rules.
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