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Old 03-02-2020, 01:31 PM   #1
StompNDump
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Default What Flexplate?

Have any of you had any experience with the Summit or Jegs SFI Flexplates? I need to get a new one for my 582 BBC and was just shopping around.
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Old 03-02-2020, 03:30 PM   #2
Shake & Bake
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Thumbs up Re: What Flexplate?

Spend the extra money and buy a Meziere True Billet Flexplate for your BBC.
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Old 03-02-2020, 04:33 PM   #3
SGSST109E
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Default Re: What Flexplate?

I second that. Once you start getting up in HP the cheaper SFI flexplates will flex to much has damage to converter hubs. Get the Mez. and never look back
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Old 03-02-2020, 05:25 PM   #4
sgasman
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Default Re: What Flexplate?

Quote:
Originally Posted by StompNDump View Post
Have any of you had any experience with the Summit or Jegs SFI Flexplates? I need to get a new one for my 582 BBC and was just shopping around.
I've had good luck with Hughes. 1185 HP and never broke or had to re-shim starter
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Old 03-03-2020, 08:10 AM   #5
Charlie Yannetti
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Default Re: What Flexplate?

I've been using the Meziere, but have used one up.. starter alignment is very key in flexplate life.. just cause it sounds right, doesn't mean it's really right..

I was also just old about a new flexplate and starter drive gear set from ATI, that has been getting good reports.. the only draw back is that you will have to buy extra drive gears for your spare starters, should you have to replace a starter during a race...
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Old 03-03-2020, 12:52 PM   #6
Tom Goldman
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Default Re: What Flexplate?

Can't beat the Meziere for durability . ...Mine is on it's third recert and still looks new.
More expensive ,yes, but not by that much considering how tough it is and its nearly 100% explosion proof.
All other flexplates ,regardless of manufacturer have a ring gear that is butt welded together and is welded on . ...If the ring gear weld does not have a weld across it attaching it to the disc it's a potential failure point .
I have personally seen several fail this way.
Charlie , I just had a friend send me pictures of a new ATI flexplate that had daylight showing between the ring gear and the plate between the welds.
How round do you think that ring gear was ? !
Bottom line is do you want a $100 piece of possibly Chinesium steel between your $20Kplus engine and your $1200 converter .
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Old 03-03-2020, 04:34 PM   #7
Charlie Yannetti
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Default Re: What Flexplate?

WOW!!.. I was told that ATI has a billet plate.. different tooth count, and a drive gear that is like an inch across.. haven't seen one yet.. but that one you referred to is definitely a red flag...
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Old 03-03-2020, 04:39 PM   #8
Charlie Yannetti
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Default Re: What Flexplate?

Quote:
Originally Posted by Charlie Yannetti View Post
WOW!!.. I was told that ATI has a billet plate.. different tooth count, and a drive gear that is like an inch across.. haven't seen one yet.. but that one you referred to is definitely a red flag...
Can't find what was described on their site.. I hope I didn't dream the conversation..
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Old 03-03-2020, 06:00 PM   #9
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Default Re: What Flexplate?

Meziere also has a special "10-Pitch" flexplate/starter combo that's supposedly stronger. The only issue is if you mix the combos up.
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Last edited by voltdr; 03-03-2020 at 06:05 PM.
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