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FE Power Forums => FE Technical Forum => Topic started by: mike7570 on June 18, 2024, 04:24:12 PM

Title: SFI Flexplate
Post by: mike7570 on June 18, 2024, 04:24:12 PM
Any good recommendations?  I have a neutral balance PA SFI flexplate but the date is expired.  I tried calling Performance Automatic but they are moving and won't be up and running until August. (Not sure they will re-certify) Summit sells PRW but I really don't want to use any of their products.
Thanks for any suggestions.
Title: Re: SFI Flexplate
Post by: pbf777 on June 18, 2024, 06:59:15 PM
I have a neutral balance PA SFI flexplate but the date is expired. 

       Who's climbing under the car, removing the inspection cover plate, looking for the decal and checking the date?   ::)

       Scott.
Title: Re: SFI Flexplate
Post by: mike7570 on June 18, 2024, 10:12:36 PM
I have a neutral balance PA SFI flexplate but the date is expired. 

       Who's climbing under the car, removing the inspection cover plate, looking for the decal and checking the date?   ::)

       Scott.

No one yet but for a NHRA class car I would rather be legal. The rule was introduced to stock eliminator and there can be spot checks any time.
Title: Re: SFI Flexplate
Post by: Kirk Morgan on June 18, 2024, 10:29:10 PM
They dont have to go under the car. They will ask you for the paper work for a recert or a new purchase. They checked Ray Paquet at Indy last year for his certs.
Title: Re: SFI Flexplate
Post by: mbrunson427 on June 19, 2024, 08:04:09 AM
I just received an ATI flex plate for our race car. It's very lightweight. It came as a package with their torque converter.
Title: Re: SFI Flexplate
Post by: mike7570 on June 19, 2024, 11:50:52 AM
I just received an ATI flex plate for our race car. It's very lightweight. It came as a package with their torque converter.
I saw that on their web site but it is listed for a C6 and E4OD doesn’t mention C4. Are the C6 and C4 torque converter bolts the same pattern?  (I haven’t really checked)
(Corrected)
Title: Re: SFI Flexplate
Post by: pbf777 on June 19, 2024, 12:29:40 PM
Are the C6 and C4 torque converter bolts the same pattern? 

    There are two (common) O.E.M. bolt pattern diameters for C4. only one for the C6; but there are also converter mounting offset distances, which if I recall correctly the C6 only shares with the E4OD?   :-\

    Scott.
Title: Re: SFI Flexplate
Post by: Sand hauler on June 29, 2024, 11:07:24 PM
I have a Hays SFI on mine.
Title: Re: SFI Flexplate
Post by: JamesonRacing on June 30, 2024, 07:29:57 AM
I have a Reactor Products flexplate in my race car.  Billet aluminum.  Been trouble free.
Title: Re: SFI Flexplate
Post by: Stangman on July 01, 2024, 10:33:51 PM
If you get the ATI Flexplate make sure you get the spacer. I ordered a flexplate from Jegs and it didn’t come with spacer and starter was crashing into plate. Spent this weekend putting spacer in. Oh fun.
Title: Re: SFI Flexplate
Post by: Jb427 on July 02, 2024, 06:01:11 AM
If you get the ATI Flexplate make sure you get the spacer. I ordered a flexplate from Jegs and it didn’t come with spacer and starter was crashing into plate. Spent this weekend putting spacer in. Oh fun.

I asked you Stangman if you got the spacer as it is required

If you buy an ati flexplate for an fe get the kit It comes with flexplate spacer and bolts too ATI Part #915722
Title: Re: SFI Flexplate
Post by: Stangman on July 02, 2024, 10:31:14 PM
My bad I don’t know if I missed your post or skimmed by it. Yes it would have been great advice. Next time I will pay better attention. One good thing is that it used much less spacers for converter clearance.
Title: Re: SFI Flexplate
Post by: Jb427 on July 03, 2024, 02:42:50 AM
My bad I don’t know if I missed your post or skimmed by it. Yes it would have been great advice. Next time I will pay better attention. One good thing is that it used much less spacers for converter clearance.

Im glad you got it sorted  ;)
Title: Re: SFI Flexplate
Post by: mike7570 on July 05, 2024, 11:02:22 PM
I just received an ATI flex plate for our race car. It's very lightweight. It came as a package with their torque converter.
I have the trans out and the ATI C4 converter has the 11 1/2” bolt pattern, so the ATI flexplate will work for my car as well. I’m going to see what the Reactor flexplate cost and how hard it is to get it recertified since they are not too far from me in SoCal.
Title: Re: SFI Flexplate
Post by: 69ramair on July 06, 2024, 03:07:28 PM
I ordered a PRW SFI flexplate before I heard about their quality issues and have it on my 464 589 hp engine and have not had any issues . I installed it with a power master starter and it works perfectly  . I have thrashed on it with drag radials and so far no issues
Title: Re: SFI Flexplate
Post by: mike7570 on July 06, 2024, 06:37:09 PM
I have a Reactor Products flexplate in my race car.  Billet aluminum.  Been trouble free.
Are you using the inertia ring?
Title: Re: SFI Flexplate
Post by: JamesonRacing on July 07, 2024, 07:37:31 AM
No, doesn't make sense to me to add more rotational weight, especially with an automatic transmission.
Title: Re: SFI Flexplate
Post by: mike7570 on July 11, 2024, 11:20:35 PM
Looks like they use the same manufacture. I just received a new Hays (Holley brand) SFI flexplate that is identical to the Performance Automatic flexplate that I have that’s expired. Everything about it is the same but the price, the Hays brand is less expensive and was in stock at Summit.
(https://i.postimg.cc/WdQG4LhH/20240711-172234.jpg) (https://postimg.cc/WdQG4LhH)