Looking for a cooler running RX-8?
08-28-2006, 04:28 PM
#153
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Originally Posted by olddragger
... Sic is what is used when you dont think you have spelled the word correctly.I did that just for you. ...
[sic] is what is used when you quote someone who has misspelled something. That way, the person doing the quoting doesn't get the blame for the poor spelling.
08-28-2006, 05:17 PM
#154
Originally Posted by olddragger
What did I ever do to you? Jesus. You need a hug or something?
Sic is what is used when you dont think you have spelled the word correctly.I did that just for you.
One day you are going to realize that parasidic drain on an engine----- is not engine specific. A mechanical water pump on any engine uses power. It takes more power to spin it faster. It takes less power to spin it slower. Everything else being equal. You really dont understand that?
Kind of hard to use a fin comb in the middle of a race I guess.
Didnt say it was a good test--I said it was a crude test. I thought you would understand that word.
Sic is what is used when you dont think you have spelled the word correctly.I did that just for you.
One day you are going to realize that parasidic drain on an engine----- is not engine specific. A mechanical water pump on any engine uses power. It takes more power to spin it faster. It takes less power to spin it slower. Everything else being equal. You really dont understand that?
Kind of hard to use a fin comb in the middle of a race I guess.
Didnt say it was a good test--I said it was a crude test. I thought you would understand that word.
Tim explained the proper use of [sic], so I won't elaborate.
The parasitic drag of the water pump is, of course, exponential with RPM (until cavitation, which begins near redline on all pump designs). However, the reduction of the UD pulley is linear, so the total effect is both detrimental to flow and minimal on drag reduction.
UD pullies are most effective on negating the drag of a PS pump first and an alternator second. Mazda already did a pretty good job of underdriving the generator already and there is no PS. The A/C is a null entity because it doesn't factor into available power.
Until you have seen the effect of a UD set on a dyno, you won't understand that it has no effect on the net power of the Renesis. It is just a dress-up item.
BTW - if your oil coolers are getting bent in the middle of a single race, you should stop trying to do off-road rallies with an RX-8.
Last edited by MazdaManiac; 08-28-2006 at 05:21 PM.
08-28-2006, 05:17 PM
#155
Sigh------------at my age I am doing good just knowing how to get to the forum. Besides i am in the medical field--we dont have to know how to spell.
By the way MD how did that 3nd cooler work out? what kind of temps are you now seeing? You made a good choice on the one you installed.
OD
By the way MD how did that 3nd cooler work out? what kind of temps are you now seeing? You made a good choice on the one you installed.
OD
08-28-2006, 05:50 PM
#157
Originally Posted by MazdaManiac
Until you have seen the effect of a UD set on a dyno, you won't understand that it has no effect on the net power of the Renesis. It is just a dress-up item.
https://www.rx8club.com/attachment.p...chmentid=77789
08-28-2006, 06:11 PM
#159
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Originally Posted by Brettus
There are dynos on this site that do show gains !
https://www.rx8club.com/attachment.p...chmentid=77789
https://www.rx8club.com/attachment.p...chmentid=77789
all you see there is simple dyno variation
08-28-2006, 06:23 PM
#160
have not fitted my pulley yet - is there any test I could do that would be acceptable ?
I have :
G tech
Hymee scanalyser (on the way)
Will be dynoing car tomorrow before the flywheel is fitted.
Mazda Maniac - there must be some test I could do with this lot that would satisfy ?
Will be testing all my mods in some way so any advice would be appreciated.
Will start a new thread on this as it is off topic - sorry .
I have :
G tech
Hymee scanalyser (on the way)
Will be dynoing car tomorrow before the flywheel is fitted.
Mazda Maniac - there must be some test I could do with this lot that would satisfy ?
Will be testing all my mods in some way so any advice would be appreciated.
Will start a new thread on this as it is off topic - sorry .
08-28-2006, 08:43 PM
#162
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Originally Posted by Brettus
have not fitted my pulley yet - is there any test I could do that would be acceptable ?
I have :
G tech
I have :
G tech
Horsepower changes will be negligable I suspect, so the G-tech will not show much.
08-28-2006, 08:47 PM
#163
Originally Posted by MazdaManiac
First of all, the "gain" in that chart is inside the statiscal variation for any set of dyno pulls.
Second, notice how the "gain" dissapears at the top of the RPM band - the place where you would want the greatest reduction in drive losses.
Second, notice how the "gain" dissapears at the top of the RPM band - the place where you would want the greatest reduction in drive losses.
The fact that the lines come together at high RPM surely points to a change in power characteristics .
08-28-2006, 08:54 PM
#164
Originally Posted by Brettus
Mazda Maniac - there must be some test I could do with this lot that would satisfy ?
However, I assure you that you are wasting your time.
Even on a vehicle with HUGE parasitic losses to a giant water pump, and archaic PS pump and a giant alternator, UD pullies would produce a net increase of 2 or 3 HP, which is, in the real world, useless.
Your best bet is an electrical water pump and an alternator field cut-off switch.
You could net up to 15 HP that way.
08-28-2006, 10:11 PM
#167
Originally Posted by MazdaManiac
Mid-range or not, WOT is all that matters.
If you are looking for power at part throtlle, just step on it harder!
If you are looking for power at part throtlle, just step on it harder!
What I should have said is that going WOT in gear in general driving should show a difference because you are in in mid rpm range.
In a 1/4 mile drag race you aren't operating in mid range RPM at all so you won't notice gains.
Last edited by Brettus; 08-28-2006 at 10:20 PM.
08-28-2006, 10:46 PM
#168
In racing, you are in the entire RPM range. Daily driving should be no different, just not WOT.
In any event, you shouldn't care about "mid" power in general, unless it is such a hole in drivability that there is a problem - in which case UD pullies are not the proper solution.
In any event, you shouldn't care about "mid" power in general, unless it is such a hole in drivability that there is a problem - in which case UD pullies are not the proper solution.
08-28-2006, 11:47 PM
#170
Originally Posted by Brettus
have not fitted my pulley yet - is there any test I could do that would be acceptable ?
I have :
G tech
Hymee scanalyser (on the way)
Will be dynoing car tomorrow before the flywheel is fitted.
Mazda Maniac - there must be some test I could do with this lot that would satisfy ?
Will be testing all my mods in some way so any advice would be appreciated.
Will start a new thread on this as it is off topic - sorry .
I have :
G tech
Hymee scanalyser (on the way)
Will be dynoing car tomorrow before the flywheel is fitted.
Mazda Maniac - there must be some test I could do with this lot that would satisfy ?
Will be testing all my mods in some way so any advice would be appreciated.
Will start a new thread on this as it is off topic - sorry .
beers
08-29-2006, 11:08 AM
#174
Go Texas Longhorns!
getting back on topic:
I have recieved and installed the modification, I want to wait until the motor and ECU settle backin after resetting the ECU before I post observations. I can say the install was easy, and like all Mazsport products, the product was very high quality.
You can fault Scott if you want for gold plating everything he does, but, you get what you pay for.
I have recieved and installed the modification, I want to wait until the motor and ECU settle backin after resetting the ECU before I post observations. I can say the install was easy, and like all Mazsport products, the product was very high quality.
You can fault Scott if you want for gold plating everything he does, but, you get what you pay for.
08-29-2006, 01:25 PM
#175
Mazsport.net
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Originally Posted by brillo
getting back on topic:
I have recieved and installed the modification, I want to wait until the motor and ECU settle backin after resetting the ECU before I post observations. I can say the install was easy, and like all Mazsport products, the product was very high quality.
You can fault Scott if you want for gold plating everything he does, but, you get what you pay for.
I have recieved and installed the modification, I want to wait until the motor and ECU settle backin after resetting the ECU before I post observations. I can say the install was easy, and like all Mazsport products, the product was very high quality.
You can fault Scott if you want for gold plating everything he does, but, you get what you pay for.