Welcome! Log In Create A New Profile
Celebrating 10 years of PedrosBoard!
Tire Rack: Revolutionizing tire buying since 1979.
Buying through this link, gets PB a donation.

Expect the best, and accept no substitute.

Message: So I guess I won't be selling you any TechnoParts ...

Changed By: Pedro (Odessa, FL)
Change Date: October 31, 2013 11:36PM

So I guess I won't be selling you any TechnoParts ...
... any time soon ;)

The science behind most of my parts comes from my two engineering degrees, a master's degree and over four decades of experience in making machines go faster.
I am not in it to become rich, and some times I don't even want to sell a particular part in order to not have to deal with tthis cr@p.
I'm also not putting in the money to test things as you would like (like Porsche) because I would never make that money back since I won't sell that many pieces.
I didn't invent the concept of the underdrive pulley. Some other racing engineers did that for their own race cars (Chevrolet and Ford) many years ago.
I just adapted it to my beloved Porsches.
We have measured a 4 HP difference on the same car (Boxster S) with before and after dyno runs running with the standard pulley and then with the under drive pulley.
Believe it or not.
I never said that under driving the pulley improves cooling.
What I said was that under driving the power steering pump lowers the power steering fluid's temperature and that's the main reason why most people install one.
I also said that the car will not run any hotter because of the extra dwell time of the coolant.
That's not my theory either. It's one of thermodynamics laws which says that if you slow the flow of a fluid running against a solid there will be a higher transfer of temperature between them.
So, with an underdrive pulley running the water pump a little slower, the coolant will carry a little more heat from the engine (running hotter) until it reaches the radiators, where because of the same extra dwell time, it will cool off more than normal making it awash and therefore you will to not notice a difference in the car's temp.

Regarding the approved list of oils, I don' disagree that Porsche, and most if not all of the other car manufacturers, spends an awful lot of money and resources in trying to find the best fluids for their vehicles.
But you must understand that now a days there is an incredible amount of politics involved. From the environmental regs to sponsorship deals to, ... you name it.
The oils on the approved list are fine, but they may not be the very best for your car because of these regs and agreements/contracts.
The best additive for motor oil in order to keep friction (wear) at bay is zinc and phosphorous (ZDDP), but as you well know the catalytic converters don't like these particular additives, so they are controlled by the EPA who regulates how much you can put into the oil.
In my particular car I use the highest amount of ZDDP I can get and therefore use racing oil (which is not approved by Porsche, but approved by me).
The thinning out of the oil formulas (0W) is also due to regulations, in particular the CAFE standards that keep asking more and more MPGs just by the stroke of a pen.
I understand that the new engines have tighter tolerances but speaking with several automotive engineer friends of mine, they tell me that they don't need to go that thin, that it's mostly because of the CAFE numbers.
Enough ranting (for now).
Happy Porscheing
Pedro

Original Message

Author: Pedro (Odessa, FL)
Date: October 31, 2013 05:55PM

So I guess I won't be selling you any TechnoParts ...
... any time soon ;)

The science behind most of my parts comes from my two engineering degrees, a master's degree and over four decades of experience in making machines go faster.
I am not in it to become rich, and some times I don't even want to sell a particular part in order to not have to deal with tis cr@p.
I'm also not putting in the money to test things as you would like (like Porsche) because I would never make that money back since I won't sell that many pieces.
I didn't invent the concept of the underdrive pulley. Some other racing engineers did that for their own race cars (Chevrolet and Ford) many years ago.
I just adapted it to my beloved Porsches.
We have measured a 4 HP difference on the same car (Boxster S) with before and after dyno runs running with the standard pulley and then with the under drive pulley.
Believe it or not.
I never said that under driving the pulley improves cooling.
What I said was that under driving the power steering pump lowers the power steering fluid's temperature and that's the main reason why most people install one.
I also said that the car will not run any hotter because of the extra dwell time of the coolant.
That's not my theory either. It's one of thermodynamics laws which says that if you slow the flow of a fluid running against a solid there will be a higher transfer of temperature between them.
So, with an underdrive pulley running the water pump a little slower, the coolant will carry a little more heat from the engine (running hotter) until it reaches the radiators, where because of the same extra dwell time, it will cool off more than normal making it awash and therefore you will to notice a difference in the car's temp.

Regarding the approved list of oils, I don' disagree that Porsche, and most if not all of the other car manufacturers, spends an awful lot of money and resources in trying to find the best fluids for their vehicles.
But you must understand that now a days there is an incredible amount of politics involved. From the environmental regs to sponsorship deals to, ... you name it.
The oils on the approved list are fine, but they may not be the very best for your car because of these regs and agreements/contracts.
The best additive for motor oil in order to keep friction (wear) at bay is zinc and phosphorous (ZDDP), but as you well know the catalytic converters don't like these particular additives, so they are controlled by the EPA who regulates how much you can put into the oil.
In my particular car I use the highest amount of ZDDP I can get and therefore use racing oil (which is not approved by Porsche, but approved by me).
The thinning out of the oil formulas (0W) is also due to regulations, in particular the CAFE standards that keep asking more and more MPGs just by the stroke of a pen.
I understand that the new engines have tighter tolerances but speaking with several automotive engineer friends of mine, they tell me that they don't need to go that thin, that it's mostly because of the CAFE numbers.
Enough ranting (for now).
Happy Porscheing
Pedro