His 1/4 mile will be too close to answer the questions. My guess is he'll lose or come close enough that he will want to test it further in a car that is not exactly what porsche had in mind for the 911. They never placed superchargers in this car. there must be a logical reason.

 

YES the 1/4 mile will be close......but I cannot say/assume IF that will be good enough for him or not.......that will be up to Cattman!
But what IF it is...?

As far as "Porsche never placed a supercharger on it" for a reason.
Maybe so they didn't hurt their TT sales.....
Maybe they LIKE the after-market parts co. enough to allow them to finesse more power from their cars...
We will never know...BUT until you have driven that car WITH the charger...even you Larry ,I think, would appreciated it's smooth power delivery,it IS very impressive and for the average guy looking for adrenalin......FI satisfies the craving!

May not be "your cup of tea" BUT.....
Maybe read the Excellence article that Jared did with his car(and YES I know that blaktout's car IS NOT Cattman's car)....but it may help you realize that this car can possibly handle the power!?

https://www.6speedonline.com/forums/...-magazine.html

And I do believe that Excellence chose Blaktout's car overall out of the three tested...(997TT,supercharged 997S and Cayman)

BUT I sure want to see the end result........and I know how I did against a 2009 Gallardo LP560 when I had the charger....

Stacy

 

"They never placed superchargers in this car. there must be a logical reason. "

The primary reason that they never put a SC on these cars is efficiency. Both SCs and Turbos are forced overpressure systems. They basically push a bigger charge of air/fuel into the combustion chamber. The primary difference is the SC is driven by the rotation of the engine (typically belt or chain driven) while the turbo picks up free energy to drive the overpressure from exhaust gas pressure.

Advantage of an SC:
Power increase without significant lag. SC is continuously powered from the engine (albeit at greater amount at higher rev)
You are driving a car (especially 2wd) that is highly reliant on throttle control for stability when cornering...linear and predictable is what a direct drive from the engine gets you (note this should also give you some idea why they put 4wd on all turbos...reduces risk for them).
Minor...but your exhaust note doesn't have a turbo in line

Advantage of a Turbo:
Efficiency, efficiency, efficiency
Since you have a free energy source you can do multi-stage turbos to cool off the charge
easier to control boost (ecu vs. most SCs are mechanically driven)

I don't see an SC as any more dangerous on these engines vs. a turbo, I see them as slightly less optimized, but probably much more fun and controlled. I am hoping to see some results come out of this...

 

It is all understood, most rhetoric here is about general concept itself that M96/M97 engine was not designed to sustain level of stress that any FI system will cause to it.
I believe that it is more or less BS, any engine has some built-in limit of how much boost it can handle but those particular Porsche engines can indeed handle a lot.

But probably IMHO it would be wiser still to do some more or less major tune-up similar to what people do on race engines - balance all rotational elements in the engine, install enforced rod bolts, etc.

But even without it I do not think one can expect M97 engine to pop up like a baloon just because of additional 6psi blower. What usually gets out as a topic is 'lubrication issues' on stock M97 engines with more boost, it would be very interesting to hear more about that but it does not seem too many people know much about this topic and those who do know are not really eager to chime in about it.

 

I agree with you for the most part but turbo chargers do take power away from the engine via backpressure... not nearly as much as a supercharger but there is some loss.

 

Paul I posted in the other thread as well......you shouldn't mod your car or IF you do at the very least TRUST the people who designed/built that mod...
Sometimes over-thinking things will lead to a miserable experience!
Just enjoy the mods and the end results that come along.........
I am in no way a rich guy or even an intelligent one,but I was willing to boost my car beyond what the stock VF kit offered.I figure IF something happened it would be a part of the experience,like driving through a beautiful mountain road and swerving to miss the tree that had fallen in front of me.....just because it almost happened or may happen....does that mean I shouldn't drive that road again?



Stacy

 

Blind trust, Stacy, is the most stupid thing you can do in life.

Everything has to be weighted with grain of salt, every risk has to be assessed. Are you going to invest right now, say, a small sum $100K into Apple stock based on recent iPad sales? One can say - you got to trust Steve Jobs, he has such a nice face after all, why not to give him a chance, heh?
Who cares if HP can kill this product in 2 months time. Or may be it is a good time to buy some Toyota stock? They run such nice commercials with correctly looking gray hair gents now - one should definitely trust them.

Plus I do not say FI is not working. I say all drastic things like this should be done in combination with proper preparation - same topic pretty much as in that recent LWFW thread if you referred to that. Blind trust is an opposite to education and knowledge. To trust into something one got to understand it and all risk factors involved. And then make an educated decision if risk probability is worth it or not.

But as of TRUST factor - I`m too old to have that card played on me, one would need to find somebody a bit younger for this thing. I already paid my dues for that thing, as well as for 'equality', 'freedom' and 'fairness'.
My liberal days of happy faith into wonders of this world are way over...

 

I know I should take offense to that comment,that you posted BUT I can't!
I am having wayyy too much fun as an idiot....I guess.....

I trust that these guys have a lot of knowledge about what they do!
It is NOT like they popped up yesterday with FI on cars....they have built a business that has flourished for years and years(not sure how long).

Do as you will Paul,and I do wish that you start to enjoy the car without over-analyzing every mod to death!


Stacy

 

Nope.

I will get FI one way of the other just out of curiocity. But as more I learn about that - more I get to conclusion that some preparations should be done if one aims for more than simple recreational driving on weekends to nearest mall.

It is all purely mechanical and not that big, really. Just some pain in the #ss as my garage is not good enough these days to have motor dropped off and to pay for Porsche work in the independent shops costs pretty penny compared to simpler cars. But it is all doable.

Most likely I will have my engine rebuilt in the end as I do have long term plans on this car. May be it would be smarter to start with GT3 block, but I am not doing it to win anything anyway...

Essentially only thing that comes into play here is - how much $$$ does it cost to bring it to certain level and what benefits you are after while doing this. You can pay $$$ for having it rebuilt to race specs but if only purpose was to prevent it from blowing and cost of labor and parts is comparable to the price of a new engine - what`s the point?

I would be delighted just to have a spare engine in my garage so I could go as I pleased, but, it is out of a chance at these time, my house is just not big enough otherwise I could easily do it perhaps. It is sooo nice to be able to do that. Nothing beats the chance to put your arms up to the elbows into engine guts knowing it is all yours and there are no strings attached.

You see, I am looking at it just from a bit different angle, I blew 3 engines in my life, so, this one will not be first if it goes. Probably most expensive one, but not the first. Nevertheless I do not want that to happen, at all. Most of them I had restored and sold afterward. As an any hobby it is not much more stupid than, say, hunt for butterflies and pin them to the carton pieces. Just a bit different.

 

[QUOTEAdvantage of a Turbo:
Efficiency, efficiency, efficiency
Since you have a free energy source you can do multi-stage turbos to cool off the charge
easier to control boost (ecu vs. most SCs are mechanically driven)][/quote]

The Turbos have been criticized for not being efficient. Lag ,throttle response, cooling. backpressure, and in the days of the single Turbo blown turbos were not uncommon (my 944 Turbo blew two turbos).

It doesn't matter what i say though because those who feel this race is worthy of making a point will pound the pavement regardless.

I wish him well.