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-   -   SFI flexplate mandatory in all v8s Jan 2024 (https://classracer.com/classforum/showthread.php?t=85084)

Bob Bender 06-18-2023 03:37 PM
Re: SFI flexplate mandatory in all v8s Jan 2024
 
I have always used a SFI wheel. Just thought it was a good idea.

1347 06-18-2023 03:55 PM
Re: SFI flexplate mandatory in all v8s Jan 2024
 
Quote:
Originally Posted by Billy Nees (Post 681795)
This ruling only applies to S/SS cars and I'm not saying that in most cases it isn't a good idea BUT it doesn't apply to a low 10 second bracket car so why should it apply to a "U/SA 273 Mopar" or a P/SA 301 Pontiac that rarely if ever sees over 6 grand?
And where am I supposed to find this 301 Pontiac SFI approved flex plate?
Maybe a re-think and a change to 11.99 or quicker might be prudent?
Maybe a call to our division tech rep, whoever that is right now, or somewhere higher up the ladder will get an answer. i can't really believe if they don't make one, that the answer will be that you need to park the car.

L.Fite 06-18-2023 04:00 PM
Re: SFI flexplate mandatory in all v8s Jan 2024
 
Quote:
Originally Posted by Mark Yacavone (Post 681812)
Billy , Just mark your tech card with the ATI 400 Pontiac model.
If anyone asks , I'll say I saw you put it in .
I'm sure you will anyway..it's only a deuce , plus re-balancing
Still not sure if you can add or take away weight on an SFI approved flex.
Anybody?
You CAN...
I have in the past... (removed weight for balance)
Honestly never gave it a thought, just part of building a motor...
Will it recertify?
Don't know...
THAT is the true question...
Hmm...

Billy Nees 06-18-2023 05:54 PM
Re: SFI flexplate mandatory in all v8s Jan 2024
 
Quote:
Originally Posted by L.Fite (Post 681818)
You CAN...
I have in the past... (removed weight for balance)
Honestly never gave it a thought, just part of building a motor...
Will it recertify?
Don't know...
THAT is the true question...
Hmm...
Soooooooooooooo, "You CAN..." but can you LEGALLY?

L.Fite 06-18-2023 06:51 PM
Re: SFI flexplate mandatory in all v8s Jan 2024
 
Quote:
Originally Posted by Billy Nees (Post 681822)
Soooooooooooooo, "You CAN..." but can you LEGALLY?
Exactly!

Again, never gave it a thought, just SOP...?
I've been running SFI flexplate since it became a rule way back when.
Have always balanced according to what was needed building a motor.
Also recall having to drill the converter bolt holes to fit the converter bolts?

I can't remember anyone at any time crawling under a car to check if it was even there. Much less if it had any extra holes...

Always ran cars fast enough to require one, so always had one.
I've never seen a flexplate fail like that, (and due to the reaction I don't think it has been a particular problem) although I once saw a stock one spit the balance weight off... that alone will get your attention.

It will be something a lot of people will have to deal with in the off season, not too big a pain really just something else to put on the to do list over the off season freshen up.

4543 06-18-2023 07:42 PM
Re: SFI flexplate mandatory in all v8s Jan 2024
 
Quote:
Originally Posted by 1347 (Post 681816)
Maybe a call to our division tech rep, whoever that is right now, or somewhere higher up the ladder will get an answer. i can't really believe if they don't make one, that the answer will be that you need to park the car.

Option will probably be some kind of flywheel shield.

e vassar 06-18-2023 08:39 PM
Re: SFI flexplate mandatory in all v8s Jan 2024
 
So..is there an expiration date?
I have an SFI flexplate on my car now that I will examine for any cracks etc..but does it make sense to take one off that has never broke,and replace with one that might?

Pat6868 06-19-2023 12:56 PM
Re: SFI flexplate mandatory in all v8s Jan 2024
 
Does each and every SFI certified product have to go through the required testing to meet the standards. Asking if someone in the know can answer, thanks.

Steve Grady 06-19-2023 01:52 PM
Re: SFI flexplate mandatory in all v8s Jan 2024
 
A representative sample of the actual product is tested. Product is then considered SFI compliant for that part number. Any changes requires retesting.

Steve Grady 06-19-2023 01:55 PM
Re: SFI flexplate mandatory in all v8s Jan 2024
 
Quote:
Originally Posted by e vassar (Post 681830)
So..is there an expiration date?
I have an SFI flexplate on my car now that I will examine for any cracks etc..but does it make sense to take one off that has never broke,and replace with one that might?

SFI 29.1 Flexplates have a 3 year certification time limit. Some brands will recertify if you send it in to them. Check with manufacturer.


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