Building bottom end - tips please

[sporadic]

I'm still confused as to why I would get it bored if it's not out of round.

[sporadic]

Originally Posted by 1turbofocus

Forged Pistons / Go over size
Eagle Rods
ARP head and main studs
Stock gasket set / use the felpro seals much better then Fords
Squair the block there off
Stock oil pump

Thats all you should need

There is a lot of talk about bearings and so far its all BS , Just get some regular Clevite/ Mich77 bearings and your fine

Tom

Tom what are your thoughts on the package offered by F2 with the SuperTech pistons and F2 con rods?
I'm having trouble finding Eagle rods for a 2.0.

Can someone help me determine what compression ratio and PSI I should run with 91 octane gas?
The 91 octane is important because that's so common here.

[DFv2]

Originally Posted by sporadic

I'm still confused as to why I would get it bored if it's not out of round.

To fit the new oversized pistons. Buy the pistons, rods, rings and bearings, oil pump and gasket set. Bring this and the bare shortblock to an engine shop and have them bore it for the pistons, square the deck assemble the shortblock.

Bring it home, pop it in your car and you'll be good to go. 9:1 is an excellent compression ratio for this vehicle. Decent off-boost throttle response, with enough headroom to turn up the boost without getting too finicky. Yes you need a new head gasket. You should be doing new head studs as well.

And you though you could just drop in rings and pistons didn't you!!?

[BigRed03]

9.0 if what you plan on running is 91 octane. If you had access to 93 (like here in Florida, that is premium) I would run 9.2 compression. Now, you would like to run more than 15 psi from time to time, that, to me, says 9.0.

And for the reasons behind boring the block out, the rings may have scored the cylinder walls and to get a good seal, those scorings will have to be removed with a boring and honing. Plus, there is no replacement for displacement!

[sporadic]

Thanks for the input everyone.

My plans have changed again.
I swung by my local salvage yard which is typically way expensive, but I thought what the heck.
They had a 2006 D20 with 68 miles on it for $500.
It includes the exhaust manifold, intake manifold, fuel rail, injectors, COPs etc.
It was from a rollover, most likely during a test drive.
So my plan is to throw that in for now (since 10psi was fine for the stock engine, the overboost hurt it) and I'll have still my current engine to take my time with building up.