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balancing.
- Subject: balancing.
- From: roccit_53 at hotmail.com (C Boyko)
- Date: Thu Oct 30 05:19:45 2003
I'd worry if you lighten too much, or didn't balance, or if something else
goes south. I saw what happens firsthand when a flywheel goes, it was very
ugly, and rightfully should have been a fatality.
The flywheel grenaded, no idea why, at the end of the quarter, with the car
doing probably a bit over 100mph, it was a ProStreet car, so I'd say about
an 11 second car. Anyway, the larger bits hit the hood with enough force to
open it onto the windsheild, which it shattered, and there was enough force
to drop the glass sunroof into the driver's lap. SO he's doing 100, with an
excellent veiw of the pretty paint on his hood (blind), with a pile of glass
on his lap, no doubt wondering what the hell happened, crossing the
centreline, and trying to get a few "Hail Mary's" in while he still has
time. He spewed every fluid and a lot of metal shards on both sides of the
track (shut things down for over an hour) and somehow got the car stopped
without hitting anything. Needless to say, he didn't hang around to
speculate on the cause of the failure. But the rad was bent out a good 4 -
6", the wiring under the hood was all chopped up ( I didn't see that, the
hood was closed), and oil/tranny fluid was streaming up over the top of the
back of the fender. I'm guessing he'll have a scatter sheild next time
around, but he needs a new car, that one was trashed.
But he was really lucky. There's your little horror story for Halloween.
Cathy
>From: "L F" <rocco16v@netzero.net>
>To: "shawn f" <falzsf@mts.net>,"Adrian" <adrian.culda@sympatico.ca>
>CC: scirocco list <scirocco-l@scirocco.org>
>Subject: Re: balancing.
>Date: Wed, 29 Oct 2003 15:37:39 -0800
>
>Don't worry about your lightweight flywheel.
>Unless your lightweight flywheel isn't balanced....
>
>Larry
> ----- Original Message -----
> From: shawn f
> To: Adrian
> Cc: scirocco list
> Sent: Wednesday, October 29, 2003 2:57 PM
> Subject: Re: balancing.
>
>
> Very good and interesting read.....Hmmm make me wonder about my
>lightweight flywheel.....
> ----- Original Message -----
> From: Adrian
> To: 'Dan Bubb' ; 'Mark' ; 'shawn f' ; 'scirocco list'
> Sent: Wednesday, October 29, 2003 12:17 AM
> Subject: RE: balancing.
>
>
> Here u go .. hope this article will clear it up for you.
>
> http://www.grapeaperacing.com/GrapeApeRacing/ttramblings/dampers.pdf
>
>
>
> Adrian C.
>
> Project Scirocco R2.oT - "The Turbocharged 16Valves of Fire Breathing
>Fury"
>
> ( 2.0L 16V T66 )
>
>
>
> -----Original Message-----
> From: Dan Bubb [mailto:jdbubb@ix.netcom.com]
> Sent: October 28, 2003 4:10 AM
> To: Adrian; 'Mark'; 'shawn f'; 'scirocco list'
> Subject: Re: balancing.
>
>
>
> Can you explain what "retune the harmonics of the crankshaft" means?
>
> Or was he just appalled that you'd put a heavy stock pulley on his
>beautiful lightened crank?
>
> Dan
>
> ----- Original Message -----
>
> From: Adrian
>
> To: 'Mark' ; 'shawn f' ; 'scirocco list'
>
> Sent: Tuesday, October 28, 2003 4:24 AM
>
> Subject: RE: balancing.
>
>
>
> The reason why they need the pulleys is that need to retune the
> harmonics of the crank shaft once its been balanced.
> My machinist after he knifeedged my crank he took a look at my
>pulley
> and looked at me and said:
> This is garbage... if I put this back up we didn't really accomplish
> anyhting cuz were just putting back some more weight.
> So I guess he got me aluminum one. From where he got it, I have no
>clue.
>
> The engine is almost complete.
> Rods and pistons are still back ordered (dammit why do they have to
> always give you a hasle with custom stuff!
>
> Head will be done soon and will post pictures of it :)
> - Ported and Polished ( 2.0L 16v )
> - Head Converted to Solid Lifters
> - Black Nitrided SS intake Valves and Inconel Exhaust Valves
> - Valves are .5mm oversized and 1mm back cut for better flow.
>
> Now I'm a bit confused on whatever I should wait for UMS or get the
>DTA
> unit.
> Either way I will have to look at fitting the Gm sensorsso it's a
>toss
> up between the $2500 CAN ECU or the $250 Can ECU ;)
>
> Adrian C.
> Project Scirocco R2.oT - "The Turbocharged 16Valves of Fire
>Breathing
> Fury"
> ( 2.0L 16V T66 )
>
>
> -----Original Message-----
> From: scirocco-l-bounces@scirocco.org
> [mailto:scirocco-l-bounces@scirocco.org] On Behalf Of Mark
> Sent: October 27, 2003 9:25 PM
> To: 'shawn f'; 'scirocco list'
> Subject: RE: balancing.
>
> I don't think they'll be grinding any metal off of the pulleys...
>My
> guess is that they bolt it together with the crank and material gets
> taken off of the crank if it's out...
>
> Mark.
> 80 S
> 81 S ABA/JH/4K
>
> > -----Original Message-----
> > From: scirocco-l-bounces@scirocco.org [mailto:scirocco-l-
> > bounces@scirocco.org] On Behalf Of shawn f
> > Sent: October 28, 2003 12:09 AM
> > To: scirocco list
> > Subject: balancing.
> >
> > Well since my engine build got delayed i decided i should get it
> balanced.
> > They (the machinist) want my Rod, one set of con rod bearings, one
>set
> of
> > rings, The crank, flywheel and bolts, cluch, pressure plate, front
> srocket,
> > with bolt and pulley. I was wondering i sanblasted (another get
>air
> tool i
> > got recently, sand blasting cabinet) the parts pulley and sprocket
> that is
> > and was wondering if it would be ok to paint these parts. Just
> wondering
> > if they mind i guess it doesnt matter. Problem i was thinking is
>if
> they
> > have to grind some of the parts there goes the paint. I guess i
>can
> touch
> > any areas ground down. But then that may throw it out of balance
> again.
> > Anyone know how much redline i can expect. I relize that i still
>need
> a
> > better cam and stronger springs in the future, but when i get some
> good
> > springs what redline can i expect. Any things i should stress with
>the
> > machine shop? Any advice would be great...
> >
> > Shawn F
> > _______________________________________________
> > Scirocco-l mailing list
> > Scirocco-l@scirocco.org
> > http://neubayern.net/mailman/listinfo/scirocco-l
>
>
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