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how to clean pistons?

  • Thread starter Thread starter 98COBRA281
  • Start date Start date Aug 29, 2008
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98COBRA281

10 Year Member
Nov 24, 2007
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Aug 29, 2008
#1
  • Aug 29, 2008
  • #1
i just got my mark 8 pistons but there kind of dirty and have some carbon on then, how can i clean them? i was thinking about sand blasting them, but i dont know if there coated or anything, and dont want to ruin them, wire wheel maybe?
 

96GT281

New Member
Apr 12, 2008
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Aug 29, 2008
#2
  • Aug 29, 2008
  • #2
just sand blast em bickings said that it should be fine. go for it. well do em at ur dads work or my shop
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
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#3
  • Aug 30, 2008
  • #3
They have solvents that can break up the carbon if you don't want to blast.

I'd just blast them. Make sure they are clean though before putting in the engine
 

98COBRA281

10 Year Member
Nov 24, 2007
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Port St. Lucie, Florida
Aug 30, 2008
#4
  • Aug 30, 2008
  • #4
Mustang5L5 said:
I'd just blast them.
Click to expand...

i want to blast them too, but im not sure because some pistion have a coating on them, and i dont know if these do.....
 

RedDaemon

10 Year Member
Mar 31, 2005
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Aug 30, 2008
#5
  • Aug 30, 2008
  • #5
seafoam + rag?

or does it only work when used in a working engine
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
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Port St. Lucie, Florida
Aug 30, 2008
#6
  • Aug 30, 2008
  • #6
-=NightHawk=- said:
seafoam + rag?

or does it only work when used in a working engine
Click to expand...

 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,260
17,945
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Massachusetts
Aug 30, 2008
#7
  • Aug 30, 2008
  • #7
OEM Lincoln Mark 8 pistons?



Ask these guys

Relocate
 

98COBRA281

10 Year Member
Nov 24, 2007
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Port St. Lucie, Florida
Aug 30, 2008
#8
  • Aug 30, 2008
  • #8
Mustang5L5 said:
OEM Lincoln Mark 8 pistons?



Ask these guys

Relocate
Click to expand...

thanks... ive been looking for a mark 8 forum, and yes there OEM pistons for 10.2:1 compression with npi heads
 

RedDaemon

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#9
  • Aug 30, 2008
  • #9
98COBRA281 said:
Click to expand...

it was worth a shot
 

DBMSTNG

I fantasize about it being BIG!
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Aug 30, 2008
#10
  • Aug 30, 2008
  • #10
i would not sand blast, or wire brush the pistons. use brake cleaner and a rag. i wouldn't do anything that is going to effect the finish of the pistons, especially on the outside edge and wrist pin location.
 

SonicStangGT

Active Member
Mar 18, 2008
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Aug 30, 2008
#11
  • Aug 30, 2008
  • #11
I used a bucket of carb cleaner to do mine.
 

98COBRA281

10 Year Member
Nov 24, 2007
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#12
  • Aug 30, 2008
  • #12
SonicStangGT said:
I used a bucket of carb cleaner to do mine.
Click to expand...

you have mark 8 pistons? i just saw your other thread and im going to be running 540 lift cams with a 270 duration
 

SonicStangGT

Active Member
Mar 18, 2008
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#13
  • Aug 30, 2008
  • #13
Stock pi cams and 96 stock cobra pistons, and it hit on one cylinder.
 

98COBRA281

10 Year Member
Nov 24, 2007
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#14
  • Aug 30, 2008
  • #14
SonicStangGT said:
Stock pi cams and 96 stock cobra pistons, and it hit on one cylinder.
Click to expand...

hmm.. well i think that mark 8 and 96-98cobra pistons are the same because there the same motor... i might have a problem
 

CobraRed_96_GT

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#15
  • Aug 30, 2008
  • #15
98COBRA281 said:
you have mark 8 pistons? i just saw your other thread and im going to be running 540 lift cams with a 270 duration
Click to expand...
270 duration doesn't make sense. What's the int/exh?
 

98COBRA281

10 Year Member
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#16
  • Aug 30, 2008
  • #16
CobraRed_96_GT said:
270 duration doesn't make sense. What's the int/exh?
Click to expand...

270/270 duration 540/540 lift and 114 LSA
 

CobraRed_96_GT

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May 20, 2006
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#17
  • Aug 30, 2008
  • #17
98COBRA281 said:
270/270 duration 540/540 lift and 114 LSA
Click to expand...
that just doesn't make sence, stage III 278AH which are basically impossible to degree and need fly-cutting usually are 242/246. I went to powerhead's site and it posts .510"x.530" cams and no duration specs. Either you got those figures wrong or you're never going to make those work. 230 intake would be really high for a stage 1.
 

98COBRA281

10 Year Member
Nov 24, 2007
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Port St. Lucie, Florida
Aug 30, 2008
#18
  • Aug 30, 2008
  • #18
CobraRed_96_GT said:
that just doesn't make sence, stage III 278AH which are basically impossible to degree and need fly-cutting usually are 242/246. I went to powerhead's site and it posts .510"x.530" cams and no duration specs. Either you got those figures wrong or you're never going to make those work. 230 intake would be really high for a stage 1.
Click to expand...

.510x.530 is the stock pi cam that comes with there head kit, or you can up grade with there regrinds for an extra 400$ powerheads has 2 stages, HOT STEET (which mine are) and PRO STREET.

hot steet 540/540 lift, 270/270 advertised duration, (i talked to them on the phone)

pro street 540/540 lift, 280/280 advertised duration.
 

CobraRed_96_GT

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May 20, 2006
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#19
  • Aug 30, 2008
  • #19
98COBRA281 said:
.510x.530 is the stock pi cam that comes with there head kit, or you can up grade with there regrinds for an extra 400$ powerheads has 2 stages, HOT STEET (which mine are) and PRO STREET.

hot steet 540/540 lift, 270/270 advertised duration, (i talked to them on the phone)

pro street 540/540 lift, 280/280 advertised duration.
Click to expand...
That's a crazy amount of duration - i'd like to see the real specs on those like lift cycle some time. Maybe thats why they sound good, but i have no idea how those are going to be timed, perhaps that's just how regrinds behave.
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
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Port St. Lucie, Florida
Aug 30, 2008
#20
  • Aug 30, 2008
  • #20
CobraRed_96_GT said:
That's a crazy amount of duration - i'd like to see the real specs on those like lift cycle some time. Maybe thats why they sound good, but i have no idea how those are going to be timed, perhaps that's just how regrinds behave.
Click to expand...

when you say timed, you mean degreed? i dont think they can be degreed, as they are windsor cams with pressed on gears
 
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