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Duratec 30 engine specs

well, im doing a full 3L swap but dont plan on using the stock 3L 02 taurus shortblock pistons, crank, etc. I was looking for specs specific stock specs on these parts so I know where to go as far as purchasing aftermarket replacement parts to increase the compression ratio.
 
just get new pistons...cant remember where they are though, someone will chime in. Or instead of a straight 3l drop in, use svt heads and up for raised compression, thats what I would do...
 
Lol well the new pistons part is what im trying to figure out, but i dont know where to start from because I dont know whats better than what I already have since I dont actually know what I already have...(dimensional specification wise)
 
1) Make a list of the specs you need.
2) Use the search to find what you can. (Don't be lazy, a lot of this has been covered). Don't forget to search the old forum that we just switched from.
3) List out the specific dimensions/specs you still need. Don't be generic and just say you need info.
 
Am I the only person wondering why he wants to UP the C/R, before adding a turbo or supercharger? I can see with nitrous, but definitely not the T/C or S/C!!

Mark
 
I don't know what in the world he wants to do...

But that link I posted to the old forums was a sticky on the old forums "piston durability" and I believe it touches on Forced Induction. So needless to say, he better read it.
 
bore on mine was actually 3.504 When Diamond cut the pistons...they used the 3.50 for stock bore, then cut them at about 3.46

My machinist said no way to put those in the block. Then with further investigation...it seems there may be a couple vriances within .001-.004.

That would only matter if you get stock bore pistons...if you go .01 over or something...just have the block honed to match the pistons.
 
posthuman63t said:
2002 Ford Taurus
Bore 3.50
Stroke 3.10
Click to expand...
Dimensioning these in inches to only two decimal places does no good. You are essentially giving a 0.010in range for bore size and stroke. These dimensions require tight tolerances.

The correct standard size bore for the 3.0L is
Grade 1: 89.000-89.010mm
Grade 2: 89.010-89.020mm
Grade 3: 89.020-89.030mm
The grade sizes are stamped into the top of the block (in the vee). Usually the plant runs about 90+% Grade 2.

The correct throw is 39.75 ± 0.05mm which makes the stroke 79.50 ± 0.1mm.
 
Is there a range of pistons you can pick up for these blocks? I mean what is the most anyone has ever bored over and was still able to find decent pistons to use?
 
back while I still owned my tour and was rebuilding the engine, when I took the block to the machine shop, he actually had one of these motors sitting there where they had just finished punching out a block and resleaving it to take either SBF or SBC pistons (i don't remember which). The customer was building some one-off motor for race purposes. You could always go that route.
 
Pope said:
back while I still owned my tour and was rebuilding the engine, when I took the block to the machine shop, he actually had one of these motors sitting there where they had just finished punching out a block and resleaving it to take either SBF or SBC pistons (i don't remember which). The customer was building some one-off motor for race purposes. You could always go that route.
Click to expand...
...or you could be SMART and not waste $1000's of dollars just to swap to a "common" piston size.

Stock pistons on the 3L have withstood 500 crank HP. I'd imagine the custom forged slugs currently available can withstand 800 then. Since the chassis can't handle 300 when does logic overcome peak thinking? :shrug:
 
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