Do you have any more detail on the above?

 

Tony,

I saw that reinactment about a year or so ago on the history channel or something. Man, that was pretty incredible! Gotta love that little pop out prop! Looked like a troling motor on my Grandfathers fishing boat

BTW, I just had a thought. Why does Phil Threshy never post here?? I thought he had everything figgured out and could build a stroker for a considerable less amount of $. He does post his dollars on his web site but he never seems to chime in. Phil, you out there?
Just curious.

 

"Well one of the reason that we never went to the metric system, is because fractions actually make much more sense to computers and provide for faster clock speed and data calculations. There are big arguements about this every year at MIT in the Computer Science department and Mathematics."

I was curious about this as well. Digital computers understand binary numbers which is why octal or hexadecimal number systems make sense as opposed to decimal, maybe that's what you meant?

-Gary
btw. Did you go to MIT?

 

Jim the glide ratio is "3:1"; that is 3 nautical miles per thousand feet typically. I'm "worried" that they'll load 100,000 kilograms of cargo on my plane in Amsterdam, then present to me a weight & balance form that tells me that 100,000 pounds have been installed. I won't be "scared" until we reach the end of the runway at 170 mph, and nothing happens when I pull the nose up...

[Now y'all you know why I wish we'd convert to metric!]

N!

 

um, cause all the "stroker" parts come from the states? ie moldex, je pistons, cometic gaskets, carrillo, msds, ford injectors, etc... it's been a real PITA for sure though... so maybe we should just say it's a 394cu motor? does kinda make it a bit difficult/ironic to snub a chevy conversion at this point

I asked for 30 GALLONS of fuel in San Feipe, MX for my plane once... thought the bill was a bit low as I was taking off.... realized it was 30 LITRES when the motor quit... that 10 gallon reserve I had stashed in the aux tanks was worth every drop... fuel attendent was surprised my bird could hold so much fuel when I refueled in Calexico... didn't seem like enough when the guages stopped bouncing off the "E" on the way in ("E" is for Emergancy, right?)... as Chuck Yeager says: if you can survive your mistakes, you'll live to make new ones in the future... any landing you walk away from is a good one...

 

Adam, If possible, I would match each piston to a bore, and if not possible to get good tols, then get another block and bore the block to each piston.

Marc

 

Marc,

I think there's a misunderstanding here. My pistons will be in spec once they are coated. That's the reason the additional honing was done, to "make room" for the coating on the pistons. The machinest wasn't comfortable with HPC coatings recommendation to bore to factory tolerance, (He has worked with HPC coatings in the past) so he machined for some room for the coating.

What I didn't expect was for the ring manufacturer to nail the ring end gap spec out of the bag. Guess I've been working with SBC's too much where you come in expecting to do some end gap filing. I mean c'mon, .0007" over is enough to make the end gap too big? Only in the Porsche world.

So I'm not giving up yet. If the first over rings don't do the trick, then I'll have to look at some other options.

Just need to do a little "extra credit" work to raise them grades.
(And I thought I was all done with school)

-Adam

 

Oops, accidently cut out part of the original message.

Motorsport is trying to locate some first over ring sets for me. Assuming the back spacing will work with the stock bore piston, I'll have it made. (Considering the end gap issue I've been dealing with, I'm definitely skeptical). I just got a dial bore gauge, so I'll be able to take some measurements next chance I'm out at the shop.

-Adam

 

Adam,
Got it...maybe I need to go to school

End gaps are important, but not as important as piston to wall tols. Did JE provide the ring pack?

I wonder if anyone has any exp with gapless rings on the coated block bores? Our result using stock bores was not very good.

Have fun at HP school where they serve high octane at lunch!

 

Marc et al,

I like the the getting a spare block idea. How much would just a block cost? This way you could assemble the block, new pistons, crank, etc and still drive the car before pulling the engine.

 

Adam,
THat is how we build engines for customer...using a donor engine as parts. The good part is that the customer is not out of a vehcile while most of the work is being perfromed!

But you already have the bloock ready to go, why need another?

 

Marc,

Are you confusing me with ATB? In any case, if I had to buy another block for a grand or two and work on it while still driving my car that would be worth it to me.

So how much is a block?

 

lots of choices... another would be to just send the block to millinium along w/a custom sized set of forged/aftermarket pistons and have them fit them to a nicom bore... the nicom is about .010" initially and they can re-hone to fit whatever you want, if you don't want to throw away an otherwise good block...

had a long talk w/JE about perfect seal rings as an option for my project... seems that a big OEM spent almost a year messing w/them on NA motors hoping for less blowby, better emissions,etc... had issues w/oil build up w/scraper rings, caused compression ring flutter ... turns out that w/out some blowby, the oil builds up and causes problems... racers like'em cause they run crazy compression, boost, vacume pumps, etc and so some blowby still happens in those extreme apps... but for NA stuff, not recommended...

 

Hi ATB, what I'm not getting here is the fact that you have coated the piston skirts. Why anybody else hasn't asked the question I dont know. If the alusil doesn't rip that HPC coating off, you have found a coating that will make the alusil block compatible with other pistons such as JEs. Since your coating is the only thing in touch with the cylinder walls. I have heard though that the alusil is quite aggresive and that coating may not last. Using 968 pistons you will still have the back up off the iron coating. Probably something to monitor while doing oil changes.

 

"I like the the getting a spare block idea. How much would just a block cost? "

I have a complete engine from a burn car for $2k.