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bolling397
MMT Pro Member
Joined: Mon Jul 25, 2011 11:48 pm Posts: 71 Location: Michigan
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Longer rods and shaved pistons
Been trying to find out how much longer c-rods to get and how much to shave off the pistons, i.e. what are BPS or PVT rod length and pistons shaved? I have searched and cant seem to locate it. BPS wants $150 a piston, I can get oem .020 over for less than one. If say the rods are .120 longer, and the pistons are shaved .070, is this like decking your heads .050 compression wise? Just trying to get a better grasp on the whole concept. Thanks for any help, I appreciate it.
_________________ 1854 Uncle J PD in a box....
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Sun Nov 17, 2013 3:14 pm |
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craig
MMT Elite Member
Joined: Tue Jan 13, 2009 7:53 pm Posts: 7515 Location: Chauvin
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Re: Longer rods and shaved pistons
BPS and PVT rod length is .120 over that of stock.
The stock pistons are shaved either .090 or .110...I can't recall right this second.
_________________ 1750 GatorTail Extreme/Stage 3 37 GTR HD Procrastination is a lot like masturbation. Sure it sounds great at the time but, in the end your only f--k--g yourself.
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Sun Nov 17, 2013 5:50 pm |
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dadazzsaleen
MMT Addict
Joined: Tue Nov 09, 2010 11:24 pm Posts: 743 Location: Mandeville, LA
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Re: Longer rods and shaved pistons
Maybe someone can tell you what compression #'s they had on a .050 decked heads. I had a motor with stock heads with pvt c-rods & pistons & compression was around 180lbs. (This motor had a cam too)
_________________ [Stage 2.5]
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Sun Nov 17, 2013 6:16 pm |
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Jamie B.
MMT 1000 Club
Joined: Tue May 19, 2009 9:48 am Posts: 2688
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Re: Longer rods and shaved pistons
If you call PVT he will tell you that each and every block is different which is true, he will tell you to start .075 taking of the piston and go from there. It all depends how muck you want the top of the piston in the hole.
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Sun Nov 17, 2013 6:28 pm |
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cupped up
MMT 1000 Club
Joined: Tue Jun 05, 2012 7:25 pm Posts: 4205 Location: St. Amant, LA
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Re: Longer rods and shaved pistons
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Sun Nov 17, 2013 6:52 pm |
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50fps
MMT 1000 Club
Joined: Tue Jan 13, 2009 6:42 pm Posts: 2377 Location: West Coast Wisconsin
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Re: Longer rods and shaved pistons
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Sun Nov 17, 2013 8:01 pm |
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bolling397
MMT Pro Member
Joined: Mon Jul 25, 2011 11:48 pm Posts: 71 Location: Michigan
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Re: Longer rods and shaved pistons
I will have to get some numbers. I was planning on doing all the internals, balancing the pistons, rods, and crank. Port and polish the heads and see where I am before decking the heads. From what I have seen on here the decking is minimal.
_________________ 1854 Uncle J PD in a box....
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Sun Nov 17, 2013 8:09 pm |
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cupped up
MMT 1000 Club
Joined: Tue Jun 05, 2012 7:25 pm Posts: 4205 Location: St. Amant, LA
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Re: Longer rods and shaved pistons
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Sun Nov 17, 2013 8:18 pm |
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bolling397
MMT Pro Member
Joined: Mon Jul 25, 2011 11:48 pm Posts: 71 Location: Michigan
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Re: Longer rods and shaved pistons
I will be getting a lot of help on this, my buddy is a product development mechanic for GM, he builds and rebuilds the new vettes and I know a Roush Racing machinist that's going to help. Getting all the parts together now. I am just trying to get the info on what I need. I really appreciate your help.
_________________ 1854 Uncle J PD in a box....
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Sun Nov 17, 2013 8:18 pm |
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MaXXis85
MMT Elite Member
Joined: Wed Jan 14, 2009 7:23 am Posts: 6233 Location: Tarkington, TX
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Re: Longer rods and shaved pistons
What about .120 longer rods, Flat top JE pistons with low friction rings, 0 deck height when oiled?
_________________ Bayou Surface Drive 337-351-0362 Tarkington, TX 77327
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Fri Dec 01, 2017 10:46 am |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: Longer rods and shaved pistons
necro, maxxis. this is from 2013 lol
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Fri Dec 01, 2017 12:52 pm |
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MaXXis85
MMT Elite Member
Joined: Wed Jan 14, 2009 7:23 am Posts: 6233 Location: Tarkington, TX
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Re: Longer rods and shaved pistons
_________________ Bayou Surface Drive 337-351-0362 Tarkington, TX 77327
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Fri Dec 01, 2017 1:35 pm |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm Posts: 16915 Location: Rowlett, TX
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Re: Longer rods and shaved pistons
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Fri Dec 01, 2017 2:12 pm |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: Longer rods and shaved pistons
lmao. I've got 25 hours on this one. must be a record for me
#CFFITR #TheGhostBoat #whoneedsphysicsihaveamudmotor
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Fri Dec 01, 2017 3:19 pm |
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