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^cool

yeah the PRB calibration will only work if you have a factory wideband wired into the k-pro for it to read. the PRA uses a special logarithm taken from the European civic type r to run the map but in that case you have to run the primary o2 sensor to the secondary o2 sensor position. I run open loop all the time but there is split seconds in the map were it hit's closed loop so the wires do need to be moved. even though you don't run closed loop.

I have a feeling that andy accidentally sent you the wrong map I think he might of sent you the failed wideband conversion map we were messing with.

As for your gm air sensor this further proves that there is a connection between honda and gm. supposedly from good source's the gm ecotech motor is made by honda and so far no one has been able to credibly deny this. hmmm

good luck with it you got my help any time.

 
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So yeah. The facts.

The MAP sensor blew out of the IM at 7000 RPMs and around 18 psi, detonation ensued and subsequently caused one of two (or both) things.

1. Bent valves.
2. Damaged rings and/or ringlands.

The pressure had to go somewhere when it detonated. It definitely went up and around some valves, and I'm certain it went down as well, it's just a matter of how hard it went down. My ring gap was pretty large to start with and the pistons are forged so that's two things in favor of the pistons not being damaged. It's not knocking, from what I can see of the pistons down through the plug tubes, everything looks OK. The rotating assembly spins freely.

If it's just valves, I will replace as many as necessary and put it back on the road, a little bit wiser and (maybe) a little more cautious. If the rotating assembly is damaged, she's going down the river as it's not worth the time, effort, and money to build a new short block.

She ran like a ****ing raped ape before the MAP sensor blew out. The first test drive only had a minor hitch. Vac driving was smooth as butter, a second gear boost pull into 3rd went off without a hitch. I came off a stop sign, pounded into second and had a charge pipe blow off. So I drove it home in vacuum and put the charge pipe back on and cinched things down.

Took her back out and got on it. Animal. Kpro is unbelievable. Pulling wicked hard, smooth boost transition - nowhere near as violent as the piggyback - I mashed it in 3rd while still in vacuum and the AFRs dipped to 13.5 until the turbo spooled and then she was solid around 11.75 in boost. I did this again and the tires broke loose at around 6000 RPMs. In third. At like 55mph. Wow. Was on the phone with Adam and nailed it again in 3rd and was winding it out at fullish boost (18 psi ish) at the fun end of the tach when the MAP sensor blew off the IM.

And that's where I am now. If I hadn't gotten that short taste of how well the car was running I would already have started the part out. Even so, it took Andy and Adam talking me into doing the compression test and checking the valves before doing anything else. Thanks guys.

More to come this weekend......

 
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DAMMMMM!!! If you need my help I'm there for you man.


So have you done the compression test yet? And what are the results?

There is another possibility that when it detonated it did not bend the valves or screw up the piston. I have had this happen before. All I had to do was re-seat all the valves. some times the detonation will just knock the valves off there seats.

Keep me up to date on everything.ROUGH

 
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Keep hanging on Clint...not worth giving up this far in. Let us know when you get some info on the diagnosis!

 
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Naw Paul, no compression test yet. Once again, I ran out of weekend to keep working on it.

When I checked the lash, #3 exhaust valves had no lash. I adjusted them and kept going. When I was done I ran through each cylinder and checked them again. #3 exhaust valves had no lash again. Re-adjusted and then ran through them all again. Lash was fine after the second adjustment. Got it started and she wouldn't run for ****. I actually had to fill the IM with propane to get it to start (don't laugh too hard, it works!) but was only able to get to idle for like 20 seconds and then it died. Definitely some bent valves at least.

I'll know for sure what's wrong next weekend.

Will do. I'll post back up on Saturday with what I find.

 
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sounds like there bent but only slighty not enough to destroy the bottom end. Hopefully it's just valves that would be my guess.

 
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I'm hoping its just valves too. At least you got to feel what it will be like once you get everything dialed in. Let me know if you just need an extra hand with anything bro. oh finally moved into the new house too bro. just need to un pack alot of things and thats it.

 
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Buh bye.

 
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Weiiiird. Doesn't detonation usually occur near the outside of the pistons first? For that to be in the center seems a little odd, as it seems me that it's the coolest part of the piston before ignition via the spark plug.

Did you do a compression test before you pulled it all apart?

I'm unsure as to how your map sensor is attached, but did it have any screws or anything that had pieces missing? Maybe something made it in to the cylinders, particularly #3.

 
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Naw, I bought a leakdown tester not a compression tester. Such is life I guess. I'm going to pull the pistons out tomorrow and look at the ringlands. Something isn't right, but nothing is missing from anything anywhere.

 
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are those marks or what ever they are smooth or gashed into the mani?

 
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They wiped out with my finger. That's the head you're looking at as well. I didn't check the mani. I'll have a look at it in the morning.

 
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was it shavings?

 
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Yeah, I'd check the mani for sure...I was wondering if the rings contributed also. That seems like the only other thing.

Harbor Freight compression tester is like $9...you may want to pick one of them up! Just used mine last weekend with success. Did you do a leakdown before pulling it apart? I'm asking because if cyl 3 had excessive leakage, that might be helpful in diagnosis. If the valves and HG were good, then you can at least be more confident in the rings being an issue before you yank it all apart.

It's just so odd how all 4 cylinders have the exact same marking, and yet only 1 has those flecks in the exhaust.

 
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I don't think so, there was nothing but soot on my finger afterwards. I'll check here in a little bit after I make my run at all the forums.

Yeah, I'm going to this morning. Something is definitely up.

I love HF for that kind of stuff, my leakdown tester was only $30.


So yeah, pistons are about to come out as soon as I find my rod bolt sleeves, drink a cup of coffee, and check the new threads on 7GH and d-series.

 
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Buh bye.

 
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Wow Clint! I just started reading from when your MAP sensor exploded. Man, my heart was pounding with anticipation in finding out what was wrong! My *** was on the edge of my seat until I read that your internals appeared to be fine. After you get things running great you need to write a damn book about this roller coaster ride!

 
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so how much boost are you going to run once its all assembled again?
take me for a ride?

 
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LOL - at the very least I'm going to build my website and document everything to have it all in one place Scott. I've got a Word document with every post that I update with my progress so I don't lose anything.

As much as 93 octane can handle without detonation.

You come to North Carolina, you can drive it.

 
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sweet so i can drive it?? lol

 
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next time i visit my brother in SC ill stop by.

 
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Just let me knoow. Hopefully the car won't be up on jackstands!

 
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nice use of a sock hehe

 
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When it's ready, yes. That way you will stop trying to sell those parts and go turbo!

I love my socks. Very versatile.

 
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well thats cool. but i doubt that i'll stop selling the parts, but who knows.

 
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Buh bye.

 
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Buh bye.

 
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love the picture instructions.....keep that going

 
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love teh pictures period.

 
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EM's are lookin' so sexy to me now! Seriously, not a hugely popular platform, but its bound to turn heads if builds like this keep coming around!