That`s not pig rich.. this is "pig rich"

I would say that is oil

UnderPSI,

I haven't ordered them yet. All options are on the table. Can you have too big of injectors, to where you can't dial them down at idle? Seems a legitimate question....

I'll discuss with the builder.

Thanks. Brad.

You can have to big of an injector. I haven't found to big yet. I run 210lb injectors on my 353ci street car. I can lean it out as low as I want at any rpm.

Dan, how do the cylinder walls look? Any indication of cyl washdown and scoring etc?
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There would be an optimum injector pressure/duration.

60lb injectors at 0.6 BSFC would deliver 560hp at 70% duty cycle.
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You're turning up the Pro Charger...you would be in that 560hp area.

One of your project goals is to streamline and bulletproof the fuel system. Having a buffer on the injectors to ensure there isn't a lean scenario may be job #1.

I wouldn't think you're running at 0.6 BSFC at WOT. Maybe 0.5 or 0.55.

That's at the rated pressure of 43.5psi.

60psi running pressure you may gtg with 60lb inj with sufficient buffer.

What he said. ↑ ↑ ↑
An 80lb injector is not a large injector.

That was long ago, probably the first engine rebuild. The owner set it so rich the walls were like a mirror.

Guys,

Progress has been slow, but we are making headway.

The heads are off to the machine shop for decking.

Rods will soon be going to the crank shop for mass matching. They currently vary from 784g to 796g, according to my postal scale.

The pistons are in, have been gone over for burrs and sharp edges, and are off to SwainTech for ceramic TBC on the crowns. When we get them back, they will go to the crank shop for final balancing of the crank. I'm hoping to we finally get the engine up on the stand this evening, get the oil pan off and get a look at the crank. Fingers crossed that Merc tech was correct in telling me the build sheet indicated the forged crank.

The new 600SCI oil cooler is in.

I have been working on some exhaust riser blocks that will give us an additional ~2-1/2" elevation on the elbows and increase the slope to the tips by 7-1/2°. We are also going to extend the tips of the elbows, further distancing the water from the exhaust valves. All of this SHOULD bring the exhaust path back in line with the tips inside the transom.

I've got a list of various parts to order. Valve springs, retainers, block-off plate (transom assembly), seals, gaskets, bearings, oil pump, on and on....




Good times....

Thanks. Brad.

Tartilla,

The custom grind cam we are shooting for showed around 620HP, at 5lb boost, with 60lb/hr injectors well short of maxed out. We have not had an actual conversation about bumping to 80lb/hr injectors, though. We still might yet go that route.

Thanks. Brad.