Anyone blown a stock boosted motor yet?

[nelsmar]

To be honest after going through great detail figuring out everything with boosted setup I half regret building an engine for this platform for my current build. I feel pretty confident in the strength of this motor with boost. If I could run as lean as I did for as long as I did for as hard as I did... This motor is quite accepting to boost!

I have half considered putting a stock intro in my car at least 2-3 times a week since my engine has blown. Bit I've already ordered a piston and rod setup that would be hard to sell as it was high compression and expensive... Go big or go home right?

[FullBlown]

It is a hit or miss with these motors. Quality control on some of the OEM parts must of been overlooked. There were numerous times where our stock motor should of blown up but never did. We were testing all sorts of stuff and really didn't expect it to take the abuse it took.

However, I hear some guys blowing their motors up with hardly any power or stress applied.

[FirestormFRS]

Originally Posted by civicdrivr

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:


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.

Having bent valves most likely means they hit the piston. I know at the factory we toss any engine that has a piston/valve contact during testing. I would have asked for a new engine or an opportunity to inspect the piston for witness marks had I been in your shoes. Sucks when there may have been a chance to avoid the blow up.

[civicdrivr]

Originally Posted by FirestormFRS

Having bent valves most likely means they hit the piston. I know at the factory we toss any engine that has a piston/valve contact during testing. I would have asked for a new engine or an opportunity to inspect the piston for witness marks had I been in your shoes. Sucks when there may have been a chance to avoid the blow up.

I was pushing for a new motor but the dealer attempted to blame me for the bent valves. They told me that the "black box" showed 8500rpm. I immediately requested to see said data, and they backed down. Later they tried to say the car must've been raced because the suspension is "highly modified" - apparently coilovers and sways is highly modified in their eyes. The regional office was of no help either.

What I find really funny is the first two times I brought the car in, I received a satisfaction survey within a week. I'm still waiting for the satisfaction survey for the third visit...

Sent from my Nexus 4 using Tapatalk 2

[FirestormFRS]

I'm just guessing from your pictures that the piston broke and the rod broke when it contacted the block. Had the rod broken first it would have just fallen and left the pin and piston where they were. Again this is just a guess from the pictures.

[xwd]

Originally Posted by FullBlown

It is a hit or miss with these motors. Quality control on some of the OEM parts must of been overlooked. There were numerous times where our stock motor should of blown up but never did. We were testing all sorts of stuff and really didn't expect it to take the abuse it took.

However, I hear some guys blowing their motors up with hardly any power or stress applied.

Yeah I've read about guys running 300+ WHP for a year now without issues. I know Accelerated isn't really on the forums anymore but they put their stock motor through hell and back, hundreds of boosted dyno pulls, running it to 8500+ RPM, 400+ WHP. Not sure it ever let go.

[alexisfire02]

Originally Posted by King Tut

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

I have been beating around the bush a little, I won't deny that. I have been trying to get more info on the release thread for the larger supercharger if anyone else has gotten one yet.

I believe the innercooler on mine was not enough and the supercharger screws were damaged. I also suffered a complete engine loss. I was not in or at the car at the time and "we" do not know still how I lost both the supercharger and the engine at essentially the same time.

I am at this time considering a custom innercooler for this blower (I am still, after 3 months, trying to get new screws) , or just selling the blower and just getting a whipple and doing a completely custom build.

Also, I purchased a new engine and it is currently being built

[Guildjs]

Very interesting posts guys. Thanks for sharing.

Overall these motors can handle some boost but give out a lot because of tuning issues. I know some motors can handle some tuning mishaps and survive but not these. At least that's the feeling that I am getting. Sound about right?

Also the rod fatigue thing sounds bad but wouldn't that happen to even a na motor over time? Sounds like maybe a design flaw.

[King Tut]

Originally Posted by alexisfire02

Also, I purchased a new engine and it is currently being built

Who is building it if you don't mind?

[s2d4]

Originally Posted by King Tut

So I guess I decided to compile the list today:

@Frs300 - Full Blown Turbo - blew his in 100 miles, reason unknown
@nelsmar - Vortech Supercharger - blew his after 12,000 miles due to running lean
@alexisfire02 - Larger Sprintex Supercharger - blew it on the drive home from getting it tuned
@Innovate Motorsports - Innovate Supercharger - blew it while developing the OTS tune to sell with the kit
@Jesse@JDLAutodesign - JDL Turbo Kit - blew up do to overboost while running AEM EMS on only port injectors
@civicdrivr - Vortech Supercharger - blew up while on the dyno
@shiro - Greddy Turbo - blew his in less than 600 miles believe to be caused by the cam timing

If anyone knows of any others, please post them up.

Who were the tuners?

[Ralph Spoilsport]

Can we please get fuel in use on these failures?

I'm wondering about E85. Specifically, I'm wondering about all the timing that gets thrown at E85 and whether rods are failing simply due to too much advance/too high max cylinder pressure.

But hey, at least it isn't ring lands .

Really appreciate guys being willing to share experience on failures. I know it doesn't feel great.

[toekneehair]

Originally Posted by King Tut

So I guess I decided to compile the list today:

@Frs300 - Full Blown Turbo - blew his in 100 miles, reason unknown
@nelsmar - Vortech Supercharger - blew his after 12,000 miles due to running lean
@alexisfire02 - Larger Sprintex Supercharger - blew it on the drive home from getting it tuned
@Innovate Motorsports - Innovate Supercharger - blew it while developing the OTS tune to sell with the kit
@Jesse@JDLAutodesign - JDL Turbo Kit - blew up do to overboost while running AEM EMS on only port injectors
@civicdrivr - Vortech Supercharger - blew up while on the dyno
@shiro - Greddy Turbo - blew his in less than 600 miles believe to be caused by the cam timing

If anyone knows of any others, please post them up.

@Unleashed - Full Blown Motorsports Stage 1 Turbo Kit - Local mechanic installed a 15lb spring and ran a 7lb OTS Map and over boosted. Spun a bearing.

[Die$eL]

Originally Posted by FirestormFRS

Having bent valves most likely means they hit the piston. I know at the factory we toss any engine that has a piston/valve contact during testing. I would have asked for a new engine or an opportunity to inspect the piston for witness marks had I been in your shoes. Sucks when there may have been a chance to avoid the blow up.

I agree. The structural integrity of the conrod would have been compromised with it previously smacking the valves.

As stated, the AFR and boost etc. seemed normal.

[Chen]

this thread... Makes me worried to go fi