Failed flex plate at nats

[HP-F]

Thought you guys may find this interesting. This is the flex plate off Tim's ute that broke at the nats. This is not the factory unit, it was replaced at some point with this aftermarket one.

http://www.hp-f.com.au/scratcharea/ls1nats-9.jpg

[Desertws6]

Ouch!!

Looks like time for a Flexplate with more metal in it. Something like this:

http://www.jegs.com/images/photos/49010010.jpg

Don't think those big gaps are doing any good.

Cheers,
Steve

[HP-F]

We've actually put a factory plate back in it, we've run many 9sec passes on them and haven't had one fail.

[Oztrack Tuning]

What were symptoms when the flexplate failed?

[HP-F]

What were symptoms when the flexplate failed?

Well obviously it had no drive, but there was also no load on the engine. It just free revved.

[Desertws6]

Funny how the factory parts are actually better. I've had conversations with folks swearing on aftermarket parts stating superiority, obviously not. Swiss chesse in a flex plate is never a good thing.

My Dad worked for GM for 34 years in components testing in Metro Detroit. I've seen the stuff they test, was always facinating. They would really beat-up parts, more that the consumer ever would under normal conditions.

Cheers,
Steve

[STATIE]

Thought you guys may find this interesting. This is the flex plate off Tim's ute that broke at the nats. This is not the factory unit, it was replaced at some point with this aftermarket one.


Strangely enough what I initially thought was a srarter motor has turned out to be an almost identical thing to this - a stuffed flex plate.

Funny that 2 black utes running similar times would do the same thing on the same day - I have a sneaking suspicion I may have the same type of plate as well.:errr:

[addicted vy ss]

Hey Statie, atleast you got to have a play in eliminations :bawl: Its ashame you didnt get the chance to advance to the next round dude:driving::driving:........ cheers Tim.

[pmpddyanlgrkn]

Ive seen the same thing with a aps ute at the last ls1 nationals ..
The drive plate ended up in about 5 bits as it shifted from 2nd to 3rd .

It looks like a h/d Magnum drive plate to me ..

I seem to think there a bit stiff and crack instead of flexing in big load situations ..

[STATIE]

I seem to think there a bit stiff and crack instead of flexing in big load situations ..

And if there is anyone that knows about stiff, crack & big load situations it would be you.:lmao:


How are ya Mr RVO - I have to come and see you tommorow or Monday.

Still haven't broken your box yet - and I have been trying.

[HOWQUICK]

looks like a zinc plated late OEM piece to me..............stamp steel crap.

we only use the .250" CrMo drive plates in our high power applications. Change the converter to 7/16" UNF drive bolts and your cranking.

[Tonner]

Ive seen the same thing with a aps ute at the last ls1 nationals ..
The drive plate ended up in about 5 bits as it shifted from 2nd to 3rd .

It looks like a h/d Magnum drive plate to me ..

I seem to think there a bit stiff and crack instead of flexing in big load situations ..

Dave If thats you rvo Dave,, :bow:
btw still using the derale cool pan,


Dave If thats you rvo Dave,, :bow:
btw still using the derale cool pan,

gotta sack the postman, :spew: