question about boring over 3.0L turbo'ed

[docfeelgood111]

Would you guys bore over a 3.0L out of a 2001 escape? If so how much? I will be turbo charging the engine. Also I am hoping to do high boost levels and will be putting forged internals. What would be safe to these blocks? Also with the different bores what would that bring the 3.0L up to in __L's? Thanks alot for any help.

[FastCougar]

I am personally doing a .5mm overbore with 9.5:1 CR forged pistons. After the head work, I will probably be running around 9.2:1, which is right where I want to be. I don't want to loose too much power when the car is not on boost and before the turbo is installed. The plan is the build the engine/tranny to take the boost, but run the car and break it in for a year while saving for the Turbo. Then, when I have all the money saved up, I will have the car shipped to ADC and have then do the install so that they can spend the right amount of time tuning it properly.

I'm not sure about the final displacement ... completely depends on the chamber work done on the heads, but I'm figuring close to 3.05L.

Running natural aspirated, my car is going to be a weird car to tune: turbo cut heads, low compression ... should be interesting to see what it does on the dyno :)

My goal is a nice 1 bar of boost and ~350 fwhp for the street. 400+ with 1.5+ bar on the track ;)

[pgtatx]

<----- Running 1 bar of boost on a 2.5L, pulls low 13's...

Ohhh wait, wrong forum on the wrong board... ;)

Just a question...but if you were looking to spend the money on boring out an engine block (not .5mm over bore for fitment and balancing purposes), and wanted to run crazy boost, wouldn't using a 2.5L block bored out to maybe a 2.7-2.8L be more optimal to run high levels of boost...of course running a 8-8.5:1 compression ratio...??

[FastCougar]

If you where only running in a straight line, I would say yes. However, with the 2.5L oil starvation issue on long sweeping right turns, I would rather start off with the larger bore and run less boost knowing the the 3.0L don't have the inherient oiling issue designed into the heads/block ;)

[GrandMasterKhan]

not to mention over all better head flow design with the 3.0.

[DemonSVT]

Originally posted by: pgtatx
<----- Running 1 bar of boost on a 2.5L, pulls low 13's...

Ohhh wait, wrong forum on the wrong board... ;)
<----- Running 0 bar of boost on a lowly 3L, pulls low 13's anyway...

Driving the wrong wheels to boot! :shrug:

[GrandMasterKhan]

Originally posted by: DemonSVT

Originally posted by: pgtatx
<----- Running 1 bar of boost on a 2.5L, pulls low 13's...

Ohhh wait, wrong forum on the wrong board... ;)
<----- Running 0 bar of boost on a lowly 3L, pulls low 13's anyway...

Driving the wrong wheels to boot! :shrug:

Owned.


.....At least until he does some turbo upgrades