3.1l ironhead pistons

[sharkey]

anyways, back to my last question, does anyone know what my compression ratio will end up being if i was to get the Sealed Power (Fed-Mog) pistons???

will it still be simular to the stock 8.5:1???

[RacerX11]

All of the off-the-shelf pistons available (Sealed Power, Silvolite, etc) will be stock specs, so your compression ratio will not change. If you want to bump compression, you will need to go custom, or mill the heads/block more.

Marty

[XLR8ING]

Stock compression being 8.9:1 on all 3.1L NA engines if I'm right.

[sharkey]

ok thanx, i guess ill have to wait till i actualy get my 3.1 ironhead and the cam i plan to run, and figure out what i will have for piston-valave clearance before i can figure out how much i will be shaving off.

id like to get 9.5-10:1, but i dont know if it will be possible to get that high just by shaving the block and heads.

[TheProfessor]

i got them from wiseco through jbody performance

[614streets]

Lol. Nobody makes forged steel pistons, they would weigh to much and would get way too hot.

[TheProfessor]

http://www.jbodyperformance.com/pistonsN.html

[bszopi]

Where does it say "forged steel?" I see forged, but I don't see steel. And they sure look like aluminum to me...

[TheProfessor]

Forged Build Kit Crate Motor 3.1L

Federal Mogul Speed-Pro CamShaft (Profile 4)
214/224
288/298
.295/.310
.443/.465
107/117
JBP Custom Billet Steel Forged Pistons (Specify Desired Compression)
Sealed Power Forged Application Piston Rings
CompCam Magnum or Sealed Power Hi-Revolution Lifters (Hyrdraulic)
Clevite or Cloyes Double Roller Timing Chain & Gear Set
981 Cast Iron Nodular Forged Melonite Treated Crankshaft
Balanced Flex-Plate or Flywheel
Shot Peened Stock Rods
Custom Colour Choice of engine enamel
Basic Block Preperation: Bath, Honed and Bored. ** Additional Heat Treatment & Cylinder wall prep
Felpro Full Engine Gasket & Seals Kit
Clevite 77 Engine Bearings 'P-Type'
Pioneer Head Bolts/Main Bolts (Equivalent to ARP)
Walbro 255LPH High Pressure Fuel Pump
Dual Coil High Revolution Valve Springs
3 Angle valve job
Full Balanced on Rotation Assembly
Parts can be added or removed to customize the motor to your specs!

[TheProfessor]

http://www.jbodyperformance.com/forgedbuildkitcrate.html

[TheProfessor]

if what they say is wrong then im wrong
dont really wanna argue fro 3 more days lmao

[RacerX11]

Yeah...JBP...a real safe source for accurate information. They also list the crank as a "981 Cast Iron Nodular Forged Melonite Treated Crankshaft". So which is it, cast iron, or forged? What a bunch of idiots.

Its simple: the pistons are forged aluminum, and the crank is cast iron.

Marty

[TheProfessor]

okey dokey

[geoffinbc]

I would have to believe the pistons are aluminum. Iron pistons havent been used on any engine in eons.

Do you have any pictures of the pistons?

[TheProfessor]

no pictures
i should call wiseco and find out for sure