non-i/c pistons

[DoWhat?]

Whats the deal on non-i/c pistons? I've heard that they are the same as industrial pistons and I've also hear they are the right bowl shape for 370 marine injectors.

Is there any advantaget to running the non-1/c bottom end vs a 14mm main '94 pickup bottom end?

[ccoxva]

Great question just thought I would get it back to the top for ya cause someone knows.

[dpuckett]

I dont think they'd be the right shape for 370 marine injectors. They are different, though, from even the IC'd trucks. Not sure of the exact differences, since I didnt take measurements of each one when I did them.

DP

[pulltilbroke]

I thought the only difference was in compression hight between the N/Ic'd truck piston and the industrial piston

[KTA]

Non IC pistons have a wider shallower bowl than IC pistons, but they are not nearly as wide as 370 bowls.

[pulltilbroke]

Does any one have a pic of a N/Ic,industrial and a 370 piston side by side

[KTA]

Industrial engines have used the Non IC and the IC style piston as well as others depending on application. Therefore it depends on what piston part# you are calling an industrial as to if it is diffrent or not. I believe the common mahle internet "industrial" piston is the same as the non IC piston. It is kind of like Marine headgaskets, there is no such thing, but everyone refers to the .020" overthick gaasket as the marine gasket when in actuallity the same 3 part number thickness head gaskets fit all 12V applications.

[DoWhat?]

Finally someone with some actual knowlege!

Regular old 2nd gen 5x15's should be the right spray pattern (or close enough) to work well with these pistons?

Would these pistons be preferable to regular old '94 pistons?

[dpuckett]

Regular old 2nd gen 5x15's should be the right spray pattern (or close enough) to work well with these pistons?

Depends on how the 2ndGen pistons compare to the nonIC piston bowl.

[crewcabxlt]

ive measured the bowl between the 2, old non i/c piston bowl is over a 1/4 inch wider. all intercooled pistons are refered to as 145* spray angle. for example i found pods run cleaner in non i/c than intercooled motors due to wider bowl.p-pump spay angle works fine in non i/c. the intercooled piston,like most changes made in 911/2 and later were emissions not performance related. i once p-pumped a non i/c, used stock 215 injectors, ran really clean. theoretically you can run more timing with wider bowl,keeps spray inthe bowl.