What are symptoms of metal fatigue or is there even a such thing?

 

There is such a thing, it is a science. Basically a piece undergoing cyclic stresses will start to form micro cracks, these cracks will propogate until thre is not enough metal to support the stress and the part will fail.

The symptons are the microcracks, very hard to identify until failure.

 

So there is no come and go metal fatigue? Like I won't feel it after givin' my boosted EJ hell?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EX-T &raquo;</TD></TR><TR><TD CLASS="quote">So there is no come and go metal fatigue? Like I won't feel it after givin' my boosted EJ hell?</TD></TR></TABLE>

I don't quite understand what you are saying. The only way you would feel metal fatigue is if a part broke.

Perhaps it is something else you are trying to describe?

 

Heat soak maybe?

 

What happens is when I run my car pretty hard, it becomes really boggy and wants to die. If I let the engine cool off for a few hours, it runs fine.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by t0p_sh0tta &raquo;</TD></TR><TR><TD CLASS="quote">Heat soak maybe?</TD></TR></TABLE>

This might be what I've experiencing. Explain this concept please.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EX-T &raquo;</TD></TR><TR><TD CLASS="quote">What happens is when I run my car pretty hard, it becomes really boggy and wants to die. If I let the engine cool off for a few hours, it runs fine.


</TD></TR></TABLE>

Has nothing to do with metal fatigue.

What does your temp guage read before, during, and after this?

 

OMG WTF IDB this has been covered before

SEARCH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


just kidding. This is by far the most interesting thread in this forum i've read all week

 

^ yes.

What is your setup? Type of plugs? Pounds of boost? More details please.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by old man neri &raquo;</TD></TR><TR><TD CLASS="quote">

Has nothing to do with metal fatigue.

What does your temp guage read before, during, and after this?</TD></TR></TABLE>

Temperature gauge reads the same at all times.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by t0p_sh0tta &raquo;</TD></TR><TR><TD CLASS="quote">^ yes.

What is your setup? Type of plugs? Pounds of boost? More details please.</TD></TR></TABLE>

Stock D16Y8
ZEX 105300 Cam
ZEX Nitrous plugs
GReddy td04h 15g kit @ ~12 psi
Apex'i N1 Catback
Landspeed Racing Testpipe
no primary o2 sensor because the harness is messed up

 

Running the Greddy kit FMU?

 

yeah, the blue box, not eManage...

 

So you currently have no o2 sensor?. So your computer has no lerned fuel trims?

 

The secondary is hooked up but the primary is not.

 

what is heat soak?