Mach 1 pistons in 2v

[wmfateam]

I have some stock Mach 1 pistons/rods from a parts bin and after searching I am not sure if they are worth throwing into a 2v build. Would be super basic, no FI nor NOS, build that would be tuned and run only on 91 kinda thing. Stock PI heads, cams and crank. My search skills are as great as my motor knowledge and just found semi conflicting info on Corral.net

 

[RAU03MACH]

is the crank laying around

 

[96blak54]

Any stock modular piston will swap in any modular engine. No special clearancing needed when running stock. If you decide to run aftermarket cams in your 2v, their may need to be valve clearancing with any piston used. It all depends on the cam being ran. A .070" max depth valve relief in a flat top piston is all thats needed to clear the most radical cam with stock pi heads. Npi heads do not need valve reliefs. The intake valve resides roughly .100" up higher than pi heads and NPI head intake valve are not cupped with a huge over hanging margin.

 

[wmfateam]

is the crank laying around

I can only get so many things for free, lol. Guy put a blower on his Mach and upgraded pistons/rods.

Any stock modular piston will swap in any modular engine. No special clearancing needed when running stock. If you decide to run aftermarket cams in your 2v, their may need to be valve clearancing with any piston used. It all depends on the cam being ran. A .070" max depth valve relief in a flat top piston is all thats needed to clear the most radical cam with stock pi heads. Npi heads do not need valve reliefs. The intake valve resides roughly .100" up higher than pi heads and NPI head intake valve are not cupped with a huge over hanging margin.

Sweet sauce. Thank you for the information! Cheap and basic will be the idea of this motor. Just a little bump in power for the Bullitt.

 

[96blak54]

Oh yeah, compression bump will give a little more umpf!

 

[joe65]

wondering what you mean? From the piston swap? The 4v head chamber is bigger than the 2v, so i know if you put 4v heads on the 2v bottom end you'll lose some compression. Just curious what you're meaning.

 

[wmfateam]

wondering what you mean? From the piston swap? The 4v head chamber is bigger than the 2v, so i know if you put 4v heads on the 2v bottom end you'll lose some compression. Just curious what you're meaning.

If you are responding to me, I was asking about the validity of just dropping Mach 1 pistons into a stock PI 2V to bump compression ratio up.

 

[96blak54]

wondering what you mean? From the piston swap? The 4v head chamber is bigger than the 2v, so i know if you put 4v heads on the 2v bottom end you'll lose some compression. Just curious what you're meaning.

Good question. The 4v chamber are bigger than the pi 2v.

 

[joe65]

If you are responding to me, I was asking about the validity of just dropping Mach 1 pistons into a stock PI 2V to bump compression ratio up.

Is the dish different on the Mach 1 pistons or is it a flat top piston? I know i can look but since I'm here and you are mentioning it, I'm curious.

Just found it, the mach's are flat top.