MrNasty951

All You would need is standard components from a stock 2.5, rods,crank,head,ect,and this set-up will give you a 2.8 all bore NOT stroked, if you care to stroke...You would need a 3.0 crank!

Brian

333pg333

Any comments on the block filler? Curious as to what that might do to the cooling?

lart951

Brian, yes I got it.

Jeremy Himsel

It's really going to depend on how much filler was used. The water jackets are deeper on a 2.5L block then a 3.0L. Most of the cooling process takes place at the top of the bore and in the head so cooling the block/cylinders lower in the bore is not as critical as it is in the head. While I have no real world experience with fillers on a P-car block I have used them in domestic applications with great success. On a 302 ford block (notorious for cylinder flex) I filled the jackets 1" from the top of the bore on a pretty hot build with AC and I didn't overheat in the middle of a AZ summer. This motor typically made 20 to 35 more HP then similar motors.

One thing to consider is that even though the 3.0L block has less water jacket area in the block (which would indiacte it's not a problem), the WP's are different and I believe the difference is impeller size to promote more volume. I'd have to measure it when I get home to be for sure.

blown 944

I would agree with that. My concern is how careful the "filler" was when it was down and if it was done before of aft boring.

Myself, it doesn't bother me b/c really a larger oil cooler is a great tool here. One thing completely neglected in the Musclecar arena.

Not to mention I am Alcohol prone anyway

333pg333

Does that make you an alcoholic Sid lol?

Tom M'Guinn

I imagine the pistons would not work with a 3L crank....

Tom M'Guinn

951 head most likely (2.7 head has wrong water port). Head gasket is the other issue -- probably need to use an MLS since the bore will exceed any porsche bore for these motors...

MrNasty951

Tom M'Guinn,

You may be correct, but what I was told at one time was that they would work with a 3ltr crank,and rods I think? but I really don't remember all the facts...as it's been years sense I started to explore with this engine. At the time I purchased it I had a 951 with a bad cylinder. I was going to use most components from that engine, and do a big valve head! But I'm truly no engine builder. I was gonna leave that to my friend who does this type of thing for a living. It did come with a cometic h/g of which I still have.

Jeremy Himsel

Tom is correct. The engine stroke moves from 78.9mm to 88mm when going with a 3.0L crank. Meaning the piston work area is moved 4.55mm in both directions so either new pistons with raised pins, shorter rods, or a fat *** head gasket needs to be used.

MrNasty951

Jeremy,

How about in standard configuration using 2.5 components just going(all bore) not (stroked)?

Thanks' in advance
Brian

Jeremy Himsel

Provided the pistons are correct....No problem.

V2Rocket

wouldnt i need to modify my 2.5 head though to match the larger bore?

David Floyd

You could, but don't have to, no work done to my combustion chamber

V2Rocket

so the standard 2.7 head has a wide enough dish in the head for this?

cool.

im going to watch this for a while see if i can scrape 1500 together..