Uh oh i make boom boom

[Jarods7920]

So leaving work yesterday do a 1-2 gear change around 3-3500 and guess what? #4 rod decided to relocate itself through the side of the block. I never would've thought that it could happen this way and i never believed anyones story before. Since it happened to me well i am a definate believer. Stupid crappy engineering.

[ElBartoRex]

sorry to hear---

mods? tuning?

[Unoriginalusername]

Originally Posted by ElBartoRex sorry to hear--- mods? tuning?

x2

[mazdaj]

I am so sorry for your loss bro. if you are willing to help the community out, it would be cool to let everyone know some details about what happened.

you said this about a week ago:

"I have intake, inlet, catless racepipe, and 3" exhaust."

im assuming your mods remain the same? anything different? mileage? boost?

[buddhabum]

Sorry man... Did you feel any excessive clutch vibration prior?

[Jarods7920]

No mods were the same i was running a cobb AP as well stage 1 93 +sf. Car is sitting at the dealer waiting to for their discretion. With the month i have been having signs do not point to anything good, but i will remain optimistic. Car showed no signs of anything. Just a 1-2 change and boom. I was have been easy on it the past week or so. A few pulls nothing crazy. My guess is its just a time thing. Its something that has happened overtime and finally enough was enough and it just gaveway. Mileage at time was 28,2xx

[Hectik1]

I think you might have been running the wrong tune through the AP.

Sorry to hear. Good luck.

[Jarods7920]

Originally Posted by SilverSpeed3 I think you might have been running the wrong tune through the AP. Sorry to hear. Good luck.

how do you figure?

[Unoriginalusername]

Originally Posted by Jarods7920 No mods were the same i was running a cobb AP as well stage 1 93 +sf. Car is sitting at the dealer waiting to for their discretion. With the month i have been having signs do not point to anything good, but i will remain optimistic. Car showed no signs of anything. Just a 1-2 change and boom. I was have been easy on it the past week or so. A few pulls nothing crazy. My guess is its just a time thing. Its something that has happened overtime and finally enough was enough and it just gaveway. Mileage at time was 28,2xx

did you unmarry the ap before taking it to mazda?

[smakdown61]

Interesting...since it didn't go boom under boost I can only assume the wrist pin siezed up or something like that.

[Fobio]

If your mods are:

Originally Posted by mazdaj you said this about a week ago: "I have intake, inlet, catless racepipe, and 3" exhaust." im assuming your mods remain the same? anything different? mileage? boost?

and you're running:

Originally Posted by Jarods7920 running a cobb AP as well stage 1 93 +sf.

then you were running the wrong tune...not the ideal tune anyway.

[smakdown61]

Originally Posted by Fobio If your mods are: and you're running: then you were running the wrong tune...not the ideal tune anyway.

We've been told by christian we can run either stage 1 or 2 with a rp so I highly doubt the tune had anything to do with it.

[Haltech]

Those 93 tunes are awfully hot... ive seen people with 93 octane knock with them. I take it, you dont have a DH and didnt bother to check the PID data while running that map the first several days after flashing it?

[whoosh@Realtune]

you guys are silly
those ap tunes are NOT aggressive and not enough to cause engine failure

no way jose or joseb

[spheed3]

I thought the 93 octane AP tunes were pretty hot too, when I had an AP I used to see 22psi spikes with stage 1+. It felt awesome but I just didn't like those spikes. To the OP I'm really sorry about your car, I hope Mazda doesn't give you too hard of a time.

[mouse0330]

damn, this suck, all he has is a few bolt on and a AP tune, 28k miles and it blows...it can't be the bolt on, so its either the AP map or shitty engine...I'm tired of these blown engine, sorry man, I hope they dissect it and find out the problem. Did you took the car to the dealer with your stuff on or you change back to stock?

[GFish]

Originally Posted by smakdown61 We've been told by christian we can run either stage 1 or 2 with a rp so I highly doubt the tune had anything to do with it.

I was running the su testpipe on both stage 1 and 2 + with the cobb sri and inlet and i took off the test pipe because the car was running like shit and it still is with eveything the map is calling for..... i will wait till june with the ap otherwise cpe standback here i come.

[CHIEFSMS3]

Originally Posted by smakdown61 Interesting...since it didn't go boom under boost I can only assume the wrist pin siezed up or something like that.

With a turbo inlet he could have easily been in the boost at 3000-3500 rpms.
My RPMC has boost coming on by 2500 rpm.

[Jarods7920]

I took all the mods off the car other than the exhaust. I did un marry the ap. Ok i am going to put this to rest once and for all. I am not an idiot. I did just hope for the best and fly by the seat of my pants on this one. I have been working in close correlation with christiain sending him logs and him sending me maps with the adjusted tunes. This was not an off the shelf 103 map just keep that in mind, so it was tuned idealy for my car baded on the logs i sent to christian.

[smakdown61]

Originally Posted by CHIEFSMS3 With a turbo inlet he could have easily been in the boost at 3000-3500 rpms. My RPMC has boost coming on by 2500 rpm.

You're not going to make much boost in 1st gear even at WOT at that rpm.

[Jarods7920]

Originally Posted by CHIEFSMS3 With a turbo inlet he could have easily been in the boost at 3000-3500 rpms. My RPMC has boost coming on by 2500 rpm.

I was in normaly drving so if i was in boost it was no more than 3-4psi. I dont just rap out the car everywhere i go. I do try to drive with resever the majority of the time.

[bf360]

my guess, he was in boost about 5 psi, this turbo spins quick as hell on our motor, and the ecu went lean and pop, no dh ftl

[kingpin748]

Thanks for the info. Considering this has happened a few times before I see no reason to doubt you.

Now if only someone could figure out what is happening. I still think it's the goofy ECU.

[Jarods7920]

Originally Posted by bf360 my guess, he was in boost about 5 psi, this turbo spins quick as hell on our motor, and the ecu went lean and pop, no dh ftl

A car should not break from normal driving. It just should not happen. I mean if thats the case the car is not safe to drive then, because i dont know anyone who just drives around in racecar mode all the time. What good would a dashhawk do me in this case? Am i supposed to be so paranoid of my car blowing up that i am supposed to watch that rather than the road in front of me during normal driving conditions? Had i been railing on the car sure i could understand it maybe even expect it.

This is not the first case we have seen of this and i really wonder what the problem is that is causing this. I know somewhere i have read something about the clips on that hold the piston ring in place being a problem and not being able to hold even stock power levels.

[bf360]

idk im still sticking to my theory that the ecu tends to stay in open loop if you boost around that area and the car runs lean, really lean which causes it

[Deadman]

had nothing to do with the ap. another one blows with the balance shaft intact.. get that shit out of there asap! Sorry bout your loss.

[badams118]

Blown engine thread:

1. "just driving it down the street"

2. part throttle 4-4.5k

3. cruising in 6th

4. hydro-lock

5. cruising in 6th

6. bad injector

7. over rev

8. cruising in 6th

9. jumped timing

10. 5th at 3500rpm

11. pulling into garage at 5mph

12. gunned it at 4.5k

14. accelerating in 3rd at 19psi

15. WOT 2nd-4th

18. 50mph no boost

20. 2nd-3rd WOT

21. WOT in 3rd

22. oil loss

23. 3-4k rpm part boost

27. 2nd-3rd light driving

28. 30psi over boost

29. 1st-2nd 3-3.5k rpm

The pattern: 11/22 are no or part boost at lower rpm. 7/22 are WOT/high boost. 4/11 are "other." It seems like every configuration from stock to BT, AP, standback, meth, fuel pump have all popped. Not many people have the BSD yet, but no one with the BSD has blow yet.

However, there are some who have beat the piss out of their car with meth/fuel pump + various mods & no BSD.

What can we conclude?

[motocrosser614]

that i need an s4

[bf360]

well 20-and21 doesnt say they had a pump upgrade, and i thought jimmy mac overboosted?
has there been any car to blow up at wot that didnt overboost or didnt have a cdfp upgrade?

[Cosmic3MPS]

Interested to know how many running meth have popped. Anyone have any figures on that?

[bf360]

Originally Posted by Cosmic3MPS Interested to know how many running meth have popped. Anyone have any figures on that?

no one that i know of besides buildabong but i dont count him he just started running it and was loading it up a hill, this motor creates a ton of heat so thats another good point

[6-Speed-6]

I know people are saying not to blame the AP. The last 3 or 4 people I have read about blowing up were running AP's. It might be a coincidence, but it is something I am keeping my eye on.

[badams118]

Only one known meth user has popped.

[aaronc7]

thats probably just because A LOT of people have APs.

[badams118]

Originally Posted by 6-Speed-6 I know people are saying not to blame the AP. The last 3 or 4 people I have read about blowing up were running AP's. It might be a coincidence, but it is something I am keeping my eye on.

I've only read of one other besides this one. Can you link the other one or two you are talking about?

[aaronc7]

who blew iwth meth?

[badams118]

buildabong

[aaronc7]

But he was having other boost issues and stuff right? Wasn't he using a mbc too?

[bf360]

he just started using meth right before he blew, he doesnt count

[mouse0330]

no ap, with ap, no meth, with meth,...it blows regardless, part throttle, or wot...and almost every gear, is there any other scenario that we havent pointed out,
how about plain stock, have there been any stock car that have blown and have warranty done on it by dealer....if yes..then whats the results...sorry if I already miss this issue