Hello everyone, im working on my mech engr senior project (which is building a turbo system for my gsr). A lot of you have done that (turboed your gsr) so you can help me with some feedback. I'm working on a section where I will do some stress calculations on certain components to try to find the range where failure occurs in our stock engines (a reasonable estimation). This info would help me pinpoint what areas i need to analyze instead of analyzing every component. From this, i can justify my power goals and sizing for turbo and all that other good stuff.

So this question goes out to people that have actually turboed your gsr and have had components break. I would like to know what failed first (sleeves, headgasket, connecting rods, axles, etc...) and at what horsepower you think you were making when this occured? I have some choices there but feel free to add your own.

I'm going to use this poll in my report as research so please dont go off tangents or start any pissing contest with each other. If you have any question, Please PM me.

Thanks A lot fellas.

 

The first thing that breaks is piston ring lands.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dustin &raquo;</TD></TR><TR><TD CLASS="quote">The first thing that breaks is piston ring lands.</TD></TR></TABLE>

Agreed. Kinda suprised it wasn't there.

 

well tuning is huge. but ya either headgasket or ringlands go first.

 

The first thing that is broke though... is you.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dustin &raquo;</TD></TR><TR><TD CLASS="quote">The first thing that is broke though... is you. </TD></TR></TABLE>


I second that, second this will be the ring lands

Kyle

 

I wish I had a cool project like that for school.

Instead, I've got firm valuation, WACC, DCF, covariance, etc...

 

I voted crank just to get it as high as the ringlands.....

 

Def. ringlands......extended periods of heat/pressure will crack those in no time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dustin &raquo;</TD></TR><TR><TD CLASS="quote">The first thing that breaks is piston ring lands.</TD></TR></TABLE>


The ssautochrome manifold will definately go before your ringlands, lol.

 

bump....also a ME major

 

bump for a COOL project

 

With stock engine, 60 trim t3/t4, hondata, 10lbs boost, 75shot nitrous blew the ring lands out.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mp3albums2k2 &raquo;</TD></TR><TR><TD CLASS="quote">With stock engine, 60 trim t3/t4, hondata, 10lbs boost, 75shot nitrous blew the ring lands out.</TD></TR></TABLE>

Ya think ??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mp3albums2k2 &raquo;</TD></TR><TR><TD CLASS="quote">With stock engine, 60 trim t3/t4, hondata, 10lbs boost, 75shot nitrous blew the ring lands out.</TD></TR></TABLE>

YUP THATS WHAT USUALLY HAPPENS

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dustin &raquo;</TD></TR><TR><TD CLASS="quote">The first thing that is broke though... is you. </TD></TR></TABLE>



"WALLET" needs to added to the poll

 

Besides getting aftermarket forged pistons of course. Are there any alternatives to making the ringlands stronger so they don't blow out? I mean headgasket you can just get a better or thicker one, but anything on ringlands?

 

Tuning... proper fuel and spark. And then stronger pistons.

 

Ring lands definetly - after 4 months of boosting on a stock motor, I broke all 4 - My senior project - intake and exhaust manifolds for turbo gsr (ME senior @ Pacific)

 

post your grade when your done. I might do something similare for my senoir project.

 

Just pushing the limits on a stock engine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by donkiman &raquo;</TD></TR><TR><TD CLASS="quote">well tuning is huge. but ya either headgasket or ringlands go first. </TD></TR></TABLE>

that's what I would say too.
I am currently boosting 10psi daily on my JDM B18C.
I haven't had anything break down yet but i am assuming the headgaskets the most. I am tryin to go with some thicker headgaskets to lower the CR along with some ARP headbolts.

 

cant ME majors do Fsae as a senior project?

bump


1bar who is transferin to VT for ME next semester

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1bar &raquo;</TD></TR><TR><TD CLASS="quote">cant ME majors do Fsae as a senior project?
</TD></TR></TABLE>

Yea, but historically at my school, it doesnt really get anywhere. One person will do something for a senior project and abandon it when they are done or they will butcher the existing car to match it to their project. So better to design my own intake and turbo manifolds - at least I get to keep it.

 

you got a better project then mine