John Speake

You would need a new design block with different (wider) offset between cyl 1-4 and 5-8 ?

S4ordie

Gosh Greg! A new crank, and now a new avatar and an image in your sig file, as well as, a small business membership. This could tilt the equilibrium of the 928 universe.

Rob Edwards

Next thing you know, there'll be an espresso machine in the front office.

S4ordie

and implementation of a new dress code; long pants required and no facial hair.

I'm worried Greg, should I be?

SeanR

He even updated his Facebook page a couple weeks ago. I'm feeling a disturbance in the force.

GregBBRD

Yes, I'm actually finishing your engine, too!

I came back from my "Birthday Week in Yosemite" mentally recharged and ready to go...now if my knees and back would get the message.

brutus

The Nissan is a 60 degree V not 90 plus to be smooth it fires every 120 degrees. For that spacing it needs 6 individual rod throws. The normal V-8 is 90 degree V and pair up two rods on each throw. Many early American V-6s were 90 degree V-8 simply a V-8 with two cylinders missing. Created what was called an oddfire because of the missing beats of the no longer present two cylinders and was quite rough running. Even fire cranks with offset corrected the firing order sequence to sound better but then ran as two three cylinder banks with all the imbalance and harmonics of a straight three.
So the answer is no benefit at all for a 928 V-8 even if it were possible.

Imo000

Thanks, I learn something new every day.

Iwanna928

If these parts go for 6500 and you had a 5.0l shortblock what would a ball park figure be in putting it together with custom pistons. Pistons are around 2k give or take.. machining work etc etc what would you think for it to be all put together and ready to go?

IcemanG17

if you have to ask

I think its around $2k to over bore the block for 104mm pistons....then figure about double the parts price in labor....so $8500 labor + $8500 parts...

Iwanna928

Thanks Brian. Think I will need something like this for my Euro!

BC

One could get a 5l quite close to 400 with higher compression pistons and some nice cams. Then run it up past 7k safely.

Imo000

Isn't this a little too optimistic?

Iwanna928

A 5.0l with stock pistons like Greg is working on is a viable choice.

5.0l screamer put down some healthy numbers.

A 5.0l euro with some custom cams would be sweet. Save you the cost of custom pistons and boring the block.
Would be a healthy street car. Certainly enough power for me.
Time to start saving. Save half the money and sell the OB and there you go!

Rob Edwards

We haven't seen Greg's 5L crank yet. The setup that I think has the greatest potential as the basis for a 20-year 'refresh' and as the canvas for additional modding centers around Greg's new 78.9 mm (stock stroke) 5L crank. So $6500ish for crank, rods, rod bearings, main bearings, and piston pins.

Assuming the bores and piston skirts are good in your '85-'95 5L long block, on top of Greg's supplied bits, you could just re-ring your 100 mm pistons ($300ish a set for rings), deck the heads and install new valve guides (maybe $1K in springs/guides/stem seals/lightweight lifters and $1K in machine shop work), get Greg's rec on proper valve springs and installation height to work with whatever cams you pick (figure $1800-$2500 for cams), $700 for an ATI damper, and $600 MSDS headers. Add another $1500-ish for pan spacer, windage trays, an improved crankcase breathing setup, and ministarter.

I get to roughly $14K for all of that. Plus all the ancillary gaskets/hoses/sensors/PEMs, and whatever additional labor is involved in actually assembling everything. But this would be a heck of a 5L screamer, given the right cams. Dunno about 400 wheel hp, but I bet you'd get to an honest 330-340 whp with the right cams and sharktuning. Might touch 400 at the crank.

I don't know diddly about 16V engines- what is the maximum 'real' whp anyone has seen out of a normally aspirated Euro S (or whichever) 16V engine?