Re: Scuffed Piston/Bore?
[Re: DoubleD]
#2497837
05/19/18 12:25 PM
05/19/18 12:25 PM
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Joined: Jan 2003
Posts: 3,849 N.E. Ohio
6bblFLASH
OP
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OP
master
Joined: Jan 2003
Posts: 3,849
N.E. Ohio
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that scuffing could have been from initial fire up - as in lack of oil on the skirts and possibly honing grit left in the bores. I would re-hone it and scuff the pistons skirts with a scotch brite and stick it back together. How did the bearings look that will give you an indication of a dirty assembly More debri in the bearings than I would like to see for what is supposed to fresh.. Pan was spotless. So I can only assume the pan has been off and cleaned. Possibly too dry on start. I can imagine a scenario where the cyl.s were washed down,from sticking floats,timing wasn`t right or ignition. Cranked it forever over who knows how many attempts/days before actually getting it running.. It is getting honed,fresh bearings/rings and back together. Cheap insurance versus damaging a new block and assembly.
Last edited by 6bblFLASH; 05/19/18 12:27 PM.
70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas 9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ! 2013 StickShift Challenge Winner@ Mopar Nationals!
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Re: Scuffed Piston/Bore?
[Re: DoubleD]
#2497869
05/19/18 01:33 PM
05/19/18 01:33 PM
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Joined: Jan 2003
Posts: 3,849 N.E. Ohio
6bblFLASH
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OP
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Yep,I really got a deal on it.
No ,into the Cuda`. Haven`t had it running in 4 years. Having a 10-point cage installed and going into the 9`s permanently.
Shopping around for a cam for it.10.77cr 330cfm heads,4.15 crank/4.32 bore. So many choices and opinions,more confusing than a mail order bride.LOL
How are your projects?
70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas 9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ! 2013 StickShift Challenge Winner@ Mopar Nationals!
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Re: Scuffed Piston/Bore?
[Re: 6bblFLASH]
#2497882
05/19/18 02:30 PM
05/19/18 02:30 PM
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Joined: Jan 2004
Posts: 8,657 fredericksburg,va
cudaman1969
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master
Joined: Jan 2004
Posts: 8,657
fredericksburg,va
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Not an isolated cylinder so lack of oil to coat walls, metal in the oil, check the cam for wear, might have wiped and been replaced, same with lifters, "pan clean" reason you got it cheap. I'd go for hone and new pistons-rings, thorough clean job.
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Re: Scuffed Piston/Bore?
[Re: cudaman1969]
#2497885
05/19/18 03:10 PM
05/19/18 03:10 PM
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Joined: Jan 2003
Posts: 3,849 N.E. Ohio
6bblFLASH
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OP
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N.E. Ohio
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Possibly. Cam is already in the trash can. Looks like a roller going in. Bought it for the block. Anything else reusable is a plus. Has a nice set of ported 906 with big valves I need to find a home for.
70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas 9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ! 2013 StickShift Challenge Winner@ Mopar Nationals!
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Re: Scuffed Piston/Bore?
[Re: 6bblFLASH]
#2497989
05/19/18 08:47 PM
05/19/18 08:47 PM
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Joined: Aug 2003
Posts: 43,744 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,744
Bend,OR USA
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The Ross pistons have very delicate skirts on them, its the alloy They will look bad but measure okay
Last edited by Cab_Burge; 05/19/18 08:47 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Scuffed Piston/Bore?
[Re: 6bblFLASH]
#2498184
05/20/18 12:33 PM
05/20/18 12:33 PM
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Joined: Jan 2003
Posts: 2,320 NE Ohio
DoubleD
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,320
NE Ohio
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Yep,I really got a deal on it.
So many choices and opinions,more confusing than a mail order bride.LOL
How are your projects? I hear ya Dennis - best thing to do is ask an expert - too many keyboard advisers that never built an engine giving advice makes it even tougher! If your going roller - I have some cam specs from that 512 I built - that might be what your looking for The hefty just got its chassis certification good to 8.50 - it's almost ready to go - just gonna do some touch up on the primered spots - did not get a chance to do the paint this year - should be out soon
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Re: Scuffed Piston/Bore?
[Re: DoubleD]
#2498187
05/20/18 12:40 PM
05/20/18 12:40 PM
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Joined: Jan 2003
Posts: 3,849 N.E. Ohio
6bblFLASH
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OP
master
Joined: Jan 2003
Posts: 3,849
N.E. Ohio
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Cool,glad to hear you are still in the fight.
I would interested in your cam spec,,,thanks
70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas 9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ! 2013 StickShift Challenge Winner@ Mopar Nationals!
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Re: Scuffed Piston/Bore?
[Re: 6bblFLASH]
#2498194
05/20/18 01:12 PM
05/20/18 01:12 PM
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Joined: Nov 2004
Posts: 3,547 Syracuse,NY
CompWedgeEngines
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Joined: Nov 2004
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Syracuse,NY
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Thats not uncommon for those Ross pistons IMO.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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