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Author Topic: What is the pin height of pistons ?  (Read 2405 times)

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427HISS

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What is the pin height of pistons ?
« 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" ?
« Last Edit: February 21, 2020, 11:01:10 AM by 427HISS »
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475fetoploader

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Re: What is the pin height of pistons ?
« Reply #1 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.
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DuckRyder

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Re: What is the pin height of pistons ?
« Reply #2 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.
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Robert

blykins

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Re: What is the pin height of pistons ?
« Reply #3 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. 
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427HISS

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Re: What is the pin height of pistons ?
« Reply #4 on: February 24, 2020, 10:00:52 PM »
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427HISS

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Re: What is the pin height of pistons ?
« Reply #5 on: February 24, 2020, 10:03:44 PM »
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My427stang

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Re: What is the pin height of pistons ?
« Reply #6 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
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Ross
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blykins

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Re: What is the pin height of pistons ?
« Reply #7 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. 
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Brent Lykins
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427HISS

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Re: What is the pin height of pistons ?
« Reply #8 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 ?
« Last Edit: March 03, 2020, 06:33:32 PM by 427HISS »
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My427stang

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Re: What is the pin height of pistons ?
« Reply #9 on: March 03, 2020, 07:03:53 PM »
Kevin, that someone was me on Facebook, and yes, they are used on many stroker combinations.
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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

427HISS

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Re: What is the pin height of pistons ?
« Reply #10 on: March 03, 2020, 08:20:25 PM »
Thanks Ross.  8)
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TomP

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Re: What is the pin height of pistons ?
« Reply #11 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.
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My427stang

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Re: What is the pin height of pistons ?
« Reply #12 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


« Last Edit: March 04, 2020, 07:22:09 AM by My427stang »
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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

427HISS

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Re: What is the pin height of pistons ?
« Reply #13 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.
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