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-   -   2 holes (https://www.miataturbo.net/insert-bs-here-4/2-holes-27473/)

TURNS101 10-27-2008 11:57 AM

2 holes
 
2 Attachment(s)
Drivers side
Attachment 210360
:mad:

Passenger side
Attachment 210361
:mad:

Rebuild time ;)

Joe Perez 10-27-2008 12:08 PM

Now that is genuinely impressive. Care to share what happened just prior to the expensive noise?

TURNS101 10-27-2008 12:30 PM

I will share.
I was at the final round for the year in the local Pro AM Drift series.
Everything was fine. EGT,AF,oil pres, coolant temp. Low boost = 14.5psi
100 oct fuel

I was close to the rev limiter. Popped off it a few times as usual at this part of th track.

Then just a BOOOOM!!! Then someone threw a hand full of nuts and bolts at my car
At first, I was like Fuk me, transmission again!!!
Until I heard my engine was no longer running and the huge cloud of smoky oil.
I happen to be be right nexcxt to the pits and pull right in. Small flame on downpipe from oil, I blew out.

Then oil just ran out from from under the car like a headshot on a violent movie :crx:

SO things seemed fine and then BAAAAM

patsmx5 10-27-2008 12:31 PM

Nice. +1 on all the details that lead up to this blessing.

NINJA EDIT: Were you running a harmonic balancer?

m2cupcar 10-27-2008 12:34 PM

Given the duty your car sees, I think you were due for a forged build. After this, you will only have to think of transmissions...;) until you buy a six speed, right?

TURNS101 10-27-2008 12:56 PM

I think I was due for a build.

I did have the stock Harmonic balancer on there.

I also have a 6 speed now :)

patsmx5 10-27-2008 01:00 PM

Hmm. In for picks of the tear down. Wondering if the oil pump gears died and that caused the bottom end to die or what.

And put some pics of the engine bay before too. I wanna see. :)

y8s 10-27-2008 01:09 PM

ever over-rev your engine accidentally (or deliberately)?

elesjuan 10-27-2008 01:21 PM

Looks like a rod bolt might've failed? Damn.. :mad:

TURNS101 10-27-2008 01:26 PM


Originally Posted by y8s (Post 324211)
ever over-rev your engine accidentally (or deliberately)?

What do you mean by over rev?

I have my Tech limiter set at 7200 with 2 stages. i think thats what he said(my tuner). spark cut and then if it continues it totally cuts the firing??

So I never brought it past there and I never sat on the rev limiter on purpose.

Ben 10-27-2008 01:40 PM

I was looking for 1 cup? :dunno:

Damn dude. At least you broke it at the end of the year.

Stein 10-27-2008 01:44 PM

Well, at least "turbo not hit block" :giggle:Unfortunately, can't say the same for the rod(s).

+1 for pics on internal carnage.

TURNS101 10-27-2008 01:53 PM

I knew the title would get everyones attention ;)

I will get internal pics up.
It will be awhile though. I have to chill and take it apart slowly.

I have a new baby that I have to hang out with. So this will be taken apart when I have time here and there..

m2cupcar 10-27-2008 02:04 PM


Originally Posted by TURNS101 (Post 324225)
...I have a new baby that I have to hang out with. So this will be taken apart when I have time here and there..

welcome to the real (my) world ;) new babies are far better than old babies anyway :giggle:

jayc72 10-27-2008 02:15 PM


Originally Posted by TURNS101 (Post 324216)
What do you mean by over rev?

I have my Tech limiter set at 7200 with 2 stages. i think thats what he said(my tuner). spark cut and then if it continues it totally cuts the firing??

So I never brought it past there and I never sat on the rev limiter on purpose.

I think he means mechanically over-rev, like missing a shift and getting the wrong (lower) gear.

y8s 10-27-2008 02:40 PM


Originally Posted by jayc72 (Post 324232)
I think he means mechanically over-rev, like missing a shift and getting the wrong (lower) gear.

yeah that. either hitting 3rd instead of 5th or going into a corner with higher revs than your downshift can handle.

fmowry 10-27-2008 02:44 PM

I popped mine at the dragstrip at 16 psi and a 50 shot. Mine was definitely knock at about 6500 rpm. Only one rod snapped and you could see the det mark on the top of the piston. Similar carnage. I had parts go through the oil pan too.

Frank

TURNS101 10-27-2008 02:51 PM


Originally Posted by y8s (Post 324241)
yeah that. either hitting 3rd instead of 5th or going into a corner with higher revs than your downshift can handle.

No, nothing like that.
Just in gear hitting the rev limiter from throttle.
Not into a gear too low.

Ben 10-27-2008 02:53 PM

It really does look like the rod cap bolt came off?! Odd.

ApexOnYou 10-27-2008 03:00 PM

+1 That looks like that cap came right off.. Sheared studs? I've never seen that.


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