Doing a fresh rebuild on my 5.9.
Had my machine shop do everything that needed to be done, even check rotating balance.
Anyways, I mic'd everything after I got it back.
My bores are all straight at 4.029" I saw in the service manual that the first rebore should be 4.034" and then honed to 4.036".
I thought that was odd, it's about 5-7 thou off. Was thinking my Piston clearance would be tight, so measured pistons too. They are 4.028" so, on paper I have about .00015" clearance. And in the real world (Piston in bore with feeler gauge) I have about 2.5-2.8 thou clearance.
What is the correct P2W clearance I need? I'm thinking around 6. I'm pretty damn sure the aluminum pistons will swell and seize with 2 thou.
The engine is being built to be a million miles work horse. Just aiming for durability (and possibly fuel economy). Thoughts? I think I need my machine shop to take out another 5 thou.
Had my machine shop do everything that needed to be done, even check rotating balance.
Anyways, I mic'd everything after I got it back.
My bores are all straight at 4.029" I saw in the service manual that the first rebore should be 4.034" and then honed to 4.036".
I thought that was odd, it's about 5-7 thou off. Was thinking my Piston clearance would be tight, so measured pistons too. They are 4.028" so, on paper I have about .00015" clearance. And in the real world (Piston in bore with feeler gauge) I have about 2.5-2.8 thou clearance.
What is the correct P2W clearance I need? I'm thinking around 6. I'm pretty damn sure the aluminum pistons will swell and seize with 2 thou.
The engine is being built to be a million miles work horse. Just aiming for durability (and possibly fuel economy). Thoughts? I think I need my machine shop to take out another 5 thou.
