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09-23-2017, 05:52 PM
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#1
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Name: mfsuper90
Title: 300ft is all I need
Status: Not Here
Join Date: Feb 2013
Location: Southeast ohio
Member`s Gallery
Posts: 769
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Cummins piston wrist pin height
I've searched a lot and came up with nothing. Can some one help me out with wrist pin height (crown to pin centerline) on a 6.7 QSB piston and the less common 4.1" bore 6.7 that was used in Ag equipment?
Thanks in advance
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’82 300D benz Bosch MW turned up, HX30, W/A Intercooler
MF Super 90 various odds and ends done. Farm stocker
MF 98 3-71 screaming jimmy. Needs N90's. Another farm stock
'14 Ram Anarchy EFI, G56
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09-24-2017, 01:14 PM
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#2
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Name: Marq92
Title: Too Much Time
Status: Not Here
Join Date: May 2012
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Posts: 952
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Smoke has piston prints posted on here. I think it was something like 69-71mm IIRC.
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2001.0 QCLB 3500 4x4 3.55 Toyo M-55 255/85R16 Brown's/Goerend 48RE sonnax shafts/maxed count Alto clutches Carli/Deaver 3.0 EMF BJ's PSC 6 bolt box Synergy steering TheRetroShop HID projector retrofit VLED's DC Power 180A alternator W-T ground mod ISSPRO EV2's
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09-24-2017, 01:38 PM
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#3
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Name: Marq92
Title: Too Much Time
Status: Not Here
Join Date: May 2012
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Posts: 952
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__________________
2001.0 QCLB 3500 4x4 3.55 Toyo M-55 255/85R16 Brown's/Goerend 48RE sonnax shafts/maxed count Alto clutches Carli/Deaver 3.0 EMF BJ's PSC 6 bolt box Synergy steering TheRetroShop HID projector retrofit VLED's DC Power 180A alternator W-T ground mod ISSPRO EV2's
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09-24-2017, 06:57 PM
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#4
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Name: mfsuper90
Title: 300ft is all I need
Status: Not Here
Join Date: Feb 2013
Location: Southeast ohio
Member`s Gallery
Posts: 769
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Much appreciated! I couldn't find that info for the life of me, very helpful.
Thanks again,
Eric
__________________
’82 300D benz Bosch MW turned up, HX30, W/A Intercooler
MF Super 90 various odds and ends done. Farm stocker
MF 98 3-71 screaming jimmy. Needs N90's. Another farm stock
'14 Ram Anarchy EFI, G56
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09-25-2017, 05:10 PM
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#5
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Name: Smokem
Title: Turbler
Status: Not Here
Join Date: May 2006
Location: Iowa
Member`s Gallery
Posts: 5,565
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69.4mm for both, Photobucket has become even more useless, I didn't think that was possible.
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09-25-2017, 06:22 PM
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#6
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Name: mfsuper90
Title: 300ft is all I need
Status: Not Here
Join Date: Feb 2013
Location: Southeast ohio
Member`s Gallery
Posts: 769
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Thanks smokem, I appreciate the help.
Is the 4.1" bore an actual cummins engine or is it the iveco/caseIH/ new holland counterpart?
__________________
’82 300D benz Bosch MW turned up, HX30, W/A Intercooler
MF Super 90 various odds and ends done. Farm stocker
MF 98 3-71 screaming jimmy. Needs N90's. Another farm stock
'14 Ram Anarchy EFI, G56
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09-26-2017, 01:38 PM
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#7
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Name: Smokem
Title: Turbler
Status: Not Here
Join Date: May 2006
Location: Iowa
Member`s Gallery
Posts: 5,565
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It was produced by Cummins and used in a few different applications, I had a good bit of info on the piston some time ago, but I do not recall where it is now. Referencing the pin location, the same value represents both 4.21" versions, I believe the smaller bore had a different compression height.
Last edited by Smokem; 09-26-2017 at 01:40 PM.
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09-26-2017, 01:47 PM
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#8
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Name: 9724VF350
Title: Tractor Guy
Status: Not Here
Join Date: Mar 2010
Location: Northeast Ohio
Member`s Gallery
Posts: 2,784
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Quote:
Originally Posted by Smokem
I believe the smaller bore had a different compression height.
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Along with a 38mm pin. I can picture the post where you put the info, I know it's on here somewhere. I've had those pistons in my hands on several occasions, I probably wrote it down somewhere where I was sure I'd remember it......
__________________
97 F350 4X4 CC Dually 5spd 24V 913 S300/HT3B Ranch Hand.
Playtoy-Oliver 1655. 12V now , 13mm, S475
Wife's ride-03 Excursion 12V swap in the works.
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09-26-2017, 02:00 PM
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#9
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Name: 9724VF350
Title: Tractor Guy
Status: Not Here
Join Date: Mar 2010
Location: Northeast Ohio
Member`s Gallery
Posts: 2,784
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Quote:
The pin is 38mm vs 40mm that is standard, bowl is 52mm wide and 25mm deep.
Compression distance;
12v/24v 5.9L ~ 71mm
24v 6.7L ~ 69mm
12v 6.7L ~ 63mm
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...
__________________
97 F350 4X4 CC Dually 5spd 24V 913 S300/HT3B Ranch Hand.
Playtoy-Oliver 1655. 12V now , 13mm, S475
Wife's ride-03 Excursion 12V swap in the works.
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09-26-2017, 02:12 PM
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#10
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Name: Smokem
Title: Turbler
Status: Not Here
Join Date: May 2006
Location: Iowa
Member`s Gallery
Posts: 5,565
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Quote:
Originally Posted by 9724VF350
I probably wrote it down somewhere where I was sure I'd remember it......
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This describes my life.
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