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Piston to cylinder wall clearance

  • Thread starter Thread starter 393 notch
  • Start date Start date Jan 24, 2007

393 notch

New Member
Jan 1, 2007
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Jan 24, 2007
#1
  • Jan 24, 2007
  • #1
Well the motor is going together this week, 393 stroker 40. over. does anyone know what the cylinder to wall clearance should be? im using forged pistons. the engine builder says its a little tight but wasnt very specific. any help would be great....
 

Rick 91GT

Mustang Master
Nov 29, 1999
9,692
95
99
PA
Jan 24, 2007
#2
  • Jan 24, 2007
  • #2
393 notch said:
Well the motor is going together this week, 393 stroker 40. over. does anyone know what the cylinder to wall clearance should be? im using forged pistons. the engine builder says its a little tight but wasnt very specific. any help would be great....
Click to expand...

What piston are you using? Each piston manufacture usually suggest something a little different. What is the exact application NA, Boosted, N2O? If your having the motor built by a professional it is not a question that they should be asking you, they should know.....
 

393 notch

New Member
Jan 1, 2007
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Jan 24, 2007
#3
  • Jan 24, 2007
  • #3
They are probe pistons (forged) from the coast high kit. its a n/a motor.. the engine builder said he likes a little more room between the piston and wall than there is but he said it would be o.k. i think it has 2 to 3 thousenths. i got alot of money into this motor and i want to be certain its done right.
 

Rick 91GT

Mustang Master
Nov 29, 1999
9,692
95
99
PA
Jan 24, 2007
#4
  • Jan 24, 2007
  • #4
393 notch said:
They are probe pistons (forged) from the coast high kit. its a n/a motor.. the engine builder said he likes a little more room between the piston and wall than there is but he said it would be o.k. i think it has 2 to 3 thousenths. i got alot of money into this motor and i want to be certain its done right.
Click to expand...

I build with a lot of Probe SRS series pistons, you should be fine with .002"-.003"
 

393 notch

New Member
Jan 1, 2007
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0
Jan 24, 2007
#5
  • Jan 24, 2007
  • #5
Thx rick.... ray
 
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