Anyone blown a stock boosted motor yet?

[xxscaxx]

Would like to know more info on @alexisfire02 engine failure with the larger supercharger. Like who tuned it, psi it was running, etc. Must have obviously been a tester since the 335 is not public yet.

[King Tut]

Originally Posted by xxscaxx

Would like to know more info on @alexisfire02 engine failure with the larger supercharger. Like who tuned it, psi it was running, etc. Must have obviously been a tester since the 335 is not public yet.

This should answer most of your questions:

http://www.ft86club.com/forums/showthread.php?t=52938

[xxscaxx]

Originally Posted by King Tut

This should answer most of your questions:

http://www.ft86club.com/forums/showthread.php?t=52938

I actually read that already. But just seemed like a little beating around the bush of what happened, lol.

Probably can't say much about it, but still would love to know.

[King Tut]

Originally Posted by xxscaxx

I actually read that already. But just seemed like a little beating around the bush of what happened, lol.

Probably can't say much about it, but still would love to know.

I know some more details on it, but it is up to the owner of the car to post those details.

[OrbitalEllipses]

You can add @civicdrivr to the list. Vortech, blew up while on the dyno.

[King Tut]

Originally Posted by OrbitalEllipses

You can add @civicdrivr to the list. Vortech, blew up while on the dyno.

I even researched his, but I couldn't remember if it was forced induction at the time. I just remembered his losing coolant thread and post in @nelsmar 's FA20Club thread.

[SmsAlSuwaidi]

Didn't @Frs300 over boost ?

[SmsAlSuwaidi]

this is something im not sure of but i heard that @robispec put a hole through his motor while on track, sealed it with duct tape and continued racing and im serious

[xxscaxx]

Would explain his absence thats for sure.

But hope its false, never want to hear the kit you have on your car is popping motors. lol

[King Tut]

Originally Posted by SmsAlSuwaidi

Didn't @Frs300 over boost ?

How would he know with no way to monitor boost pressure?

[SmsAlSuwaidi]

Originally Posted by King Tut

How would he know with no way to monitor boost pressure?

Meh, true but i thought after inspecting the carnage that was the most likely cause. Hey you have to remember that was 12 months ago

[jamesm]

Originally Posted by King Tut

I 100% agree. The only way to know that your tune is working is to be able to monitor it while driving with the use of a boost gauge and a wideband.

really though you're not gaining useful information staring at a gauge at WOT. you need to log and review later, data needs to be sifted and sorted. i wouldn't suggest anyone run without one, but they're not strictly necessary will a properly setup map.

the point is with ecutek you can just make the car smart enough to know what to do when something happens, rather than staring at a gauge hoping you'll react in time. you should have both lines of defense.

EDIT: to be clear i mean the gauge... not the sensor. the ecu can react to an off reading on the wideband much quicker than you can, and it can do it automatically with proper setup. no one should drive an FI car without a wired-in, proper wideband sensor.

[ecko04]

Originally Posted by King Tut

I 100% agree. The only way to know that your tune is working is to be able to monitor it while driving with the use of a boost gauge and a wideband.

A stand alone well calibrated wideband, I must add. Don't trust your AFR to a reading from the OBDII, which is reading from the primary AFR sensor which is not wideband. It's fine for boost as it's reading from the MAP but not ok for AFR.

[civicdrivr]

Originally Posted by King Tut

I even researched his, but I couldn't remember if it was forced induction at the time. I just remembered his losing coolant thread and post in @nelsmar 's FA20Club thread.

Yes, the motor blew with about 33k on it. And yes, it did have coolant issues in the past, which I thought were behind me. I guess I'll post the story:

I noticed the car losing coolant since new. Around 19k miles, I noticed that the coolant loss accelerated and I had white/light gray smoke from the exhaust above ~4k rpms. Queue dealer trip #1. They did a compression test and scoped the cylinders. The #3 cylinder was down compared to the others, but not "enough". There was coolant residue visible in the cylinder as well. Toyota requested that I monitor the coolant levels.

Dealer trip #2: About 3k miles later it was low again. They topped it off and told me to keep looking at it.

Dealer trip #3: At ~26k miles, while on the highway, the car started knocking and misfiring. I brought it to Toyota and they said that the valves on the #3 cylinder were bent (none of the others though) and the paperwork said "something in the valvetrain came apart". They replaced the cylinder head and sent me on my way.

From then on, the car ran fine. I still noticed some coolant loss, but chalked it up to evaporation. At 33k miles, that's when the fun stuff happened.

I had installed a wastegated Vortech kit along with a new fuel pump and injectors and had it on the dyno for live tuning by Visconti. We had the standard 9psi pulley on for initial tuning. At 5psi, it made ~250ish whp. At 9psi, it was consistently making 280-285whp. Earlier that day, prior to putting the kit on, the car put down 171whp, in line with other mostly stock twins that have run on that dyno.

On the 9th run, it put down 286/216 at the wheels. Then the oil volcano happened. The rod snapped about an inch below the wrist pin, spun around and punched a t shaped hole in the block. The cause? No idea. The logs from the run showed zero detonation, AFR was dead on (factory O2, so there's that...), there was no knocking, and it did not overboost (IIRC, the logs showed 9.4psi). I must also mention that I kept the stock rev limit as I saw no need to rev higher.

I have some pics of the carnage that I can post when I'm not on the work laptop. But yea, that was my experience with this motor.

Also, not that this matters anymore, but Visconti picked up the tab of the motor and the labor, and drove me 4hrs back home that night (then turned around and drove all the way back to CT), so lets not use my experience to disparage him - there are plenty of others that can easily accomplish that.