piston rings for FI LSx builds...

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Dec 16, 2007 | 02:06 PM

#11

Badzracing

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From: southern NJ

I had good luck with Mahle rings running 15lbs of procharged boost.

Dec 16, 2007 | 02:10 PM

#12

Derek @ EDO

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From: Baton Rouge, LA

Quote:

Originally Posted by Superado

I have been told that the HellFire rings were more suited for a "track only" motor...and not suited very well for a DD...

Dec 18, 2007 | 08:51 PM

#13

fullthrottledan

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im running the Pro select rings on diamond pistons. seems do be doing a very good job so far. 3000 hard miles and counting

Dec 18, 2007 | 09:03 PM

#14

moregrip

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From: Wyoming

maybe higher tension oil rings and a napier secong ring with a nice moly top ring

Dec 26, 2007 | 05:41 PM

#15

Superado

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From: Dallas, Georgia

the rings on the pistons I bought seem to measure 1.5mm, 1.5mm, 3.0mm
finding an off the shelf 3.905 set in these thicknesses are between slim and none...
I did find a set today...WiseCo...manufactured by Hastings...
I believe that Lunati carries the same set...same part number...

Quote:

Mfr Part#: 39050GK
Description: High tech piston rings. These GK piston rings from Wiseco offer a ductile iroln plasma moly coated top ring. The second ring is a taper faced ferrox coated cast iron style. The oil rings are a 3-piece mini-flex vent design. These piston rings are a perfect replacement for stock to high performance engines.

http://www.wiseco.com/PDFs/Catalogs/...ompressors.pdf

the low tension oil ring is the only thing I question...
TurboBerserker...what are the specs on your Diamond Pro Selects

Dec 26, 2007 | 06:55 PM

#16

parish8

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From: omaha ne

hellfire rings in my 408.

ran good but it did use a little oil. about 1 quart every 1500miles. thats 1500 hard miles. didn't do any special break in.

Feb 25, 2008 | 04:03 PM

#17

Superado

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From: Dallas, Georgia

ring end gap?

ended up getting a set of Mahle 3910MS-5 standard tension, file fit rings...
what end gaps are you guys running for FI? I should be at 14 - 15 #'s of boost...
I thought it should be about .0195 - .020 top ring and .0215 - .022 second ring, but I just called Diamond for their recommendedation for their pistons and they said
.022 - .023 top ring and .024 - .025 second ring...for that boost level...

Last edited by Superado; Feb 25, 2008 at 09:21 PM.

Feb 25, 2008 | 04:43 PM

#18

jasond26

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That is what I gapped mine to.

Feb 26, 2008 | 10:36 AM

#19

Superado

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From: Dallas, Georgia

Jason...you mean your gap is the same as what Diamond recommended?
...how's the truck?

anyone else familar with what gap they used?

Last edited by Superado; Feb 26, 2008 at 03:50 PM.

Feb 27, 2008 | 01:38 AM

#20

'00SLVRDO

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From: San Antonio, TX by way of Benton, MO

Run Hellfires in my DD 408. No special break-in.

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