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FE Power Forums => FE Technical Forum => Topic started by: 427HISS on February 21, 2020, 10:32:48 AM

Title: What is the pin height of pistons ?
Post by: 427HISS on February 21, 2020, 10:32:48 AM: I have a guy that is looking at my rods and piston's and is wanting to know the pin height, is it the center of the pin to the top of the piston ?

Is that the "compression height" ?
Title: Re: What is the pin height of pistons ?
Post by: 475fetoploader on February 21, 2020, 11:21:04 AM: Compression height yes. Center of wrist pin to top of piston. If it’s a domed piston, not the top of the dome though.
Title: Re: What is the pin height of pistons ?
Post by: DuckRyder on February 21, 2020, 07:55:10 PM: You should be able to call Mahle and give them the piston number, and they should be able to tell you the CH.
Title: Re: What is the pin height of pistons ?
Post by: blykins on February 22, 2020, 06:19:47 AM: No need to call anyone.....you can either do the math...… (10.150 - 2.1875 - 6.700 = ~1.263) ….or...…...you can just look on the box. On a Mahle piston, it will be part of the part number.
Title: Re: What is the pin height of pistons ?
Post by: 427HISS on February 24, 2020, 10:00:52 PM: (https://i.imgur.com/FZHa97N.jpg)
Title: Re: What is the pin height of pistons ?
Post by: 427HISS on February 24, 2020, 10:03:44 PM: (https://i.imgur.com/EmRlot4.jpg)
Title: Re: What is the pin height of pistons ?
Post by: My427stang on February 25, 2020, 06:59:48 AM: I would assume 1.267

If you look at the batch number, it says 1267/4375. The latter is stroke.

(4.375/2)+6.70 rod+1.267 = 10.1545 which would work with a cut FE deck

Usually it's more clear, but you could always call the company and you'd have the positive answer
Title: Re: What is the pin height of pistons ?
Post by: blykins on February 25, 2020, 07:04:08 AM: They are 1.267".

The part number, FFE267375I20 denotes a 1.267" compression height, 4.375" bore, and a 20cc inverted dome.
Title: Re: What is the pin height of pistons ?
Post by: 427HISS on March 03, 2020, 04:27:53 PM: Anyone interested in buying ?

Someone said they'll also work for big block strokers for Ford FE & 460, Chevy & Pontiac. Is that true ?
Title: Re: What is the pin height of pistons ?
Post by: My427stang on March 03, 2020, 07:03:53 PM: Kevin, that someone was me on Facebook, and yes, they are used on many stroker combinations.
Title: Re: What is the pin height of pistons ?
Post by: 427HISS on March 03, 2020, 08:20:25 PM: Thanks Ross. 8)
Title: Re: What is the pin height of pistons ?
Post by: TomP on March 03, 2020, 10:41:48 PM: I could be interested. I have a crank and block I could use them in. Didn't really want compression that low but could live with it.

I don't think you could use them in a 460 or Pontiac too easily.
Title: Re: What is the pin height of pistons ?
Post by: My427stang on March 04, 2020, 07:17:44 AM: Quote from: TomP on March 03, 2020, 10:41:48 PM
I could be interested. I have a crank and block I could use them in. Didn't really want compression that low but could live with it.

I don't think you could use them in a 460 or Pontiac too easily.

If I wasn't clear, the discussion off this site was about the 6.70 Compstar rods...I wasn't talking about the pistons. I can see how my post looked incorrect in this discussion. Only the rods are usable in other makes
Title: Re: What is the pin height of pistons ?
Post by: 427HISS on March 04, 2020, 08:00:57 PM: Quote from: TomP on March 03, 2020, 10:41:48 PM
I could be interested. I have a crank and block I could use them in. Didn't really want compression that low but could live with it.

I don't think you could use them in a 460 or Pontiac too easily.

Let me know Tom.