You know how tell a 450hp engine is really working? You DRIVE IT. When it breaks, you FIX IT. When something breaks, it is the weak link. Keep fixing and go again...and again...and again. I doubt that 1) you will get 450bhp and if you are able to, 2) it will ever be sustainable for any length of time. Which is fine... just not our goal.
All the charts, graphs and dynos, are fine. The real test... FIELD TEST. What I keep seeing is the 'experts' come out and say what is wrong but won't say what is right. When I make a VERY OBVIOUS post of the bottleneck, there is absolutely no response. How obvious must it be?
We have been porting heads for the TDI's for about 8 years. We have cams designed by our cam expert for the ALH, AHU and PD motors; all produced around the same time. (Then it got even busier). They were never meant to take maximum advantage of the cylinder head, maximum valve height or any other maximum. We have thousands of cams and hundreds of ported heads on the road in working engines. We have had very good results, with virtually no negative reactions. Can they all be operating under a placebo effect? Not in your life... You know what they say: You can't fool all of the people all of the time.
There is a complaint made against us from a dubious post, made by copy/ pasting to create a whole new thread, "PD Cams"...
http://forums.tdiclub.com/showthread.php?t=338977&highlight=PD+Cams T
The comment was, "I wish I never bought a Franko6 cam..." I think the intended purpose of this thread was to tarnish my reputation. I believe the thread was closed because it backfired for it's intended purpose. I didn't have time to respond, so those who already had my cams/porting work spoke for me.
About a year later, from the most famous of TDIClub threads, "What did you do to your car Today?" Page 987, post #14,804: The same guy who complained spoke up again.
dieselpower04
"Filled up 13.1 gallons after doing 714 miles back and forth to work (115 miles, one way) = 54.5 mpg."
That is my SAME Stage II PD cam, now up against a MikeW tune. And the funny thing is, after getting the car running so well, he still didn't think the cam had anything to do with how the car ran; just the tune saved him.
I am not trying to build monster engines. I will leave that to people like you, Andy2. Our major point is fuel economy and longevity. I am getting that done. However, I can't 'dyno' fuel economy. I can't flow bench longevity. And as to Newlite, agreed, keeping port air speed up contradicts maximum port, maximum valve height or total CFM. I get that. And as Tom Nelson says in that video, I will paraphrase, "What perfect?" What is your goal you attempting to accomplish? Can I ever relate to "..They were out partying and I was still getting greasy."
The very first thing we do is unshroud the valve porting below the seat and take it from there. We eliminate the most obvious bottleneck as that is undeniably a benefit. We do not often agree that big 'ol valves are going to be the ticket, as there is the cracking issue and there is also on the intake valves, an issue of shrouding against the cylinder wall... hard to compensate for.
And we do sell what we call snake oil. We have used LiquiMoly Purge as a tonic for weak, clogged or otherwise unbalance injectors as a 'first attempt' to inexpensively repair them. It so often works, we are not against promoting the stuff. But that doesn't stop us calling it 'snake oil'.
Don't be looking for us to ever do dimpling. The slower air speed in a TDI will never take advantage of it.