UPDATE. Well, more bad news. Had it at the tuner this past weekend. Couldn't keep the kpro connected still. But eventually got to a point where it was steady enough to tune. Got it strapped in. Idle was hunting all over the place. Did a few pulls and after 6000rpm the ecu was pulling a ton of timing. ECU was seeing intake temps up near 190 degrees F. Turns out we have the wrong IAT sensor.
FUTURE REFERENCE! Use an IAT sensor from an early Honda Civic or Integra. 1995 Honda Civic should be fine and will bolt right into the JRSC manifold. Or spring for a T1 Motorsport IAT sensor that is super quick but you'll need to drill and tap for it. We went with a stock K24A2 IAT sensor and it is not reading correctly. No one told me about this going in. Learn from my mistake. Looking at the dyno graphs you see the power climb and climb and right at 6k rpm it drops off a cliff and plateaus. Not good. Still, we were seeing 290rwhp and about 260ftlb of torque. Pretty decent. So I've got a T1 IAT sensor on order.
The hunting idle. This is the bastard. Discovered that completely blocking off the throttle body and iac valve port completely didn't do jack --- the engine still idled at 1k rpm. So obviously there is a huge leak somewhere. Isolated it to the blower/manifold mating. Took everything off and found that the bolts weren't even torqued down and that there was about 1.5" of mating surface with no sealant whatsoever. On top of all that, the pulley is totally ruined now. Whoever put it together didn't do it correctly so the keyway for the woodruff key is competely ruined. Will need a new pulley and all the hardware. Pulley will not come off. Need to find out what my options are at this point.
Both Apex and I are just so tired of this project. Over the past four months, with the k24 block being replaced recently, we have pretty much re-done everything I paid the shop to do. About $17,000 can basically be written off as a complete waste. We've retained an oil cooler mount (which we had to modify anyway to fit the passenger side wheel-well liner back on), an intercooler mount (which wasn't placed correctly, requiring us to modify the driver's side wheel-well liner to make fit), we didn't redo the rotors and brake piston install, and we didn't have to re-route the wiring harness they put in, so I guess that wasn't redone. But just thinking about how I essentially paid them 17 large for what amounts to basically nothing makes me so raging mad I can't even begin to describe it.
And now this. I'm beginning to think we need to check the brake install, too. Just to be double triple sure.
Thinking of K-swapping? Here's
an idea of the cost involved.
2006 LOTUS EXIGE (ASPEN WHITE) Honda K24A2 + MPx90 supercharger. 322whp/271lb-ft @13psi. Build thread here.
1994 AUTOZAM AZ-1 MAZDASPEED Japanese Super Kei!
2014 FIAT 500e Hydroelectric powered EV daily driver.
2007 SUZUKI SV650 Track bike.
Last edited by Butters; 04-02-2014 at 05:36 PM.