Quote:
Originally Posted by onewhippedpuppy
If I paid a shop to do a high performance 911 engine build for me, I sure as hell would want a dyno chart to substantiate their claims. Which I believe most of the reputable builders do typically provide.
|
He has told me he will send me one along with the build photos. For now, however, he is apparently unable to post photos to the site on which we had this discussion. So, we'll see.
Quote:
Originally Posted by onewhippedpuppy
With enough money anything is possible. Singer/Williams gets 500 HP out of 4.0 liters without a turbo.
|
Well, um - no. That's not true. I don't care how much one has to spend, attaining that level of specific output from that era of air cooled 911 motor is simply impossible. There are inherent design hurdles that simply cannot be overcome. Those have been overcome in the Williams motor, but it is essentially a clean-sheet redesign of the top end, utilizing air cooled 3.6 cases.
Again, the photos show a stock crank with stock rods. There is a well established rev limit on those components, I don't care how carefully massaged they might be. And these appear to be dead stock in every respect. The rods are not even polished. The crank is not polished, much less lightened with knife-edged counterweights, as is standard practice when seeking much higher than stock revs. Hell, for any real increase in rpm potential, either Pauter or Carrillo rods are deemed virtually mandatory. Certainly for the revs required to do what he claims of this motor. This motor has stock rods.
And, again, the port sizes are visibly what one would expect to see in a stock 2.7 - probably around 36mm. The flow required to support the hp claims made would require a substantial enlargement of those ports. I believe RSR ports are somewhere around 44mm. There is a very visible difference, with the monster RSR ports pushing the edge margin to the studs to a very bare minimum. These ports clearly do not even come close.
So, essentially, the photos reveal an essentially stock-ish rebuild. No tricks in the bottom end, no tricks in the heads.
And just to clarify - this car is not for sale. I'm not sure where some of you came up with that idea. It's simply a recently completed build, with its rightfully proud owner showing it off. He is not making these claims in an effort to sell it. I did not refute these claims in an effort to drive down the price. I was just concerned that an engine builder was blowing smoke up a less than savvy customer's ass.