Anyone know of 200+whp STOCK RX8s? I saw one today...
03-01-2005, 07:12 PM
#52
Well to test out your theory on 5th gear dynos, I'll try again, I'll be heading over to a dyno for a RxTuner article within the next 2 weeks I'll do both a 3rd gear and 5th gear baseline.
Btw for anyone curious as to what were doing, first im going to the dyno to get a baseline, like I said 3rd and 5th gear. Then im heading home to pop the car on the lift and install my Racing Beat flywheel and Mazdaspeed clutch yes I'll do a really detailed DIY, Then im going to the dyno to see what difference these two parts made.
Then I'll install the Racing Beat Exhaust in the shop, the double tip not the single tip racing one they have. Dyno again and finally install the RB intake and dyno again.
Moving to tech garage. (omi what were you smoking)
Btw for anyone curious as to what were doing, first im going to the dyno to get a baseline, like I said 3rd and 5th gear. Then im heading home to pop the car on the lift and install my Racing Beat flywheel and Mazdaspeed clutch yes I'll do a really detailed DIY, Then im going to the dyno to see what difference these two parts made.
Then I'll install the Racing Beat Exhaust in the shop, the double tip not the single tip racing one they have. Dyno again and finally install the RB intake and dyno again.
Moving to tech garage. (omi what were you smoking)
03-01-2005, 07:36 PM
#54
Kaiten Kenbu Rokuren
Originally Posted by PoLaK
After watching the 15MB video Im going to go under the assumption that you removed the exhaust system.
Quoting racing beat:
3. Mufflers – muffler & connecting pipe - 2-3 HP.
4. Removing the muffler from the car (engine) – about 4 HP.
5. Remove catalytic converter and resonator from the engine completely, and replacing with "cat" replacement tube – max benefit 8 HP – regardless of what muffler is used (or even no muffler).
So if you removed everything back from the headers you should see about a 15HP increase, subtract that from your 201 or 198 run and you get to 186/183 which is where my car is. You still have a GREAT car just not that GREAT
Maybe slightly more then 186/183 because im unsure if racingbeats numbers are talking about wheel horsepower or crack as they have an engine dyno.
Quoting racing beat:
3. Mufflers – muffler & connecting pipe - 2-3 HP.
4. Removing the muffler from the car (engine) – about 4 HP.
5. Remove catalytic converter and resonator from the engine completely, and replacing with "cat" replacement tube – max benefit 8 HP – regardless of what muffler is used (or even no muffler).
So if you removed everything back from the headers you should see about a 15HP increase, subtract that from your 201 or 198 run and you get to 186/183 which is where my car is. You still have a GREAT car just not that GREAT
Maybe slightly more then 186/183 because im unsure if racingbeats numbers are talking about wheel horsepower or crack as they have an engine dyno.
03-01-2005, 08:57 PM
#58
RX8 and a Truk....
Thread Starter
they are open by exception only - for group dynos. This weekend may not work for me - Mary's got surgery for kidney stones this coming monday; we'll be prepping the house (cleaning, mostly).
03-01-2005, 10:07 PM
#61
SORRY SORRY SORRY for hijacking but how bout a picture to whet ur appitite.
http://www.polakgraphics.com/images/045_JFR.JPG
Pressure plate is lighter then stock but its still somewhere around 25-30lbs, HEAVY. And that big round thing in the bottom right is the throwout bearing we all love to hate so much hopefully when im done it won't be making any noise.
Anymore questions start another thread and direct me to it.
http://www.polakgraphics.com/images/045_JFR.JPG
Pressure plate is lighter then stock but its still somewhere around 25-30lbs, HEAVY. And that big round thing in the bottom right is the throwout bearing we all love to hate so much hopefully when im done it won't be making any noise.
Anymore questions start another thread and direct me to it.
03-01-2005, 10:12 PM
#62
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Originally Posted by PoLaK
Hummmm not to down play your results BUT in my experience the higher the gear the dyno is the more inaccurate the results are because of the higher wheelspeed and for some reason the inaccuracy always favors higher horsepower numbers. This is just a **** in the wind but if rotarygod or mazdamanic could explain why?
Same thing applies to "fuel economy" if you can put the pieces together.
Last edited by RX8-TX; 03-01-2005 at 10:20 PM.
03-01-2005, 10:18 PM
#63
Two separate dyno places Turbo Trix and KD Rotary both told me they don't like to do high gear dyno's. TurboTrix said because its more inaccurate because of higher wheelspeed KD was because of that and not enough cooling on the oil coolers.
Only speaking from the experience of reputable shops... thats all.
Only speaking from the experience of reputable shops... thats all.
03-01-2005, 10:36 PM
#64
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Originally Posted by PoLaK
Two separate dyno places Turbo Trix and KD Rotary both told me they don't like to do high gear dyno's. TurboTrix said because its more inaccurate because of higher wheelspeed KD was because of that and not enough cooling on the oil coolers.
Only speaking from the experience of reputable shops... thats all.
Only speaking from the experience of reputable shops... thats all.
Hey, and I am only speaking out of 3 years of dealing with electronic friggin' instruments and people bitchin' because sample rates were not adequately high enough! That's all. :D
At the end of the day, you want to get the most repeatable, accurate results you can get. Not the highest ones.
Last edited by RX8-TX; 03-01-2005 at 10:38 PM.
03-02-2005, 07:01 AM
#65
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Originally Posted by PoLaK
Well to test out your theory on 5th gear dynos, I'll try again, I'll be heading over to a dyno for a RxTuner article within the next 2 weeks I'll do both a 3rd gear and 5th gear baseline.
Btw for anyone curious as to what were doing, first im going to the dyno to get a baseline, like I said 3rd and 5th gear. Then im heading home to pop the car on the lift and install my Racing Beat flywheel and Mazdaspeed clutch yes I'll do a really detailed DIY, Then im going to the dyno to see what difference these two parts made.
Then I'll install the Racing Beat Exhaust in the shop, the double tip not the single tip racing one they have. Dyno again and finally install the RB intake and dyno again.
Moving to tech garage. (omi what were you smoking)
Btw for anyone curious as to what were doing, first im going to the dyno to get a baseline, like I said 3rd and 5th gear. Then im heading home to pop the car on the lift and install my Racing Beat flywheel and Mazdaspeed clutch yes I'll do a really detailed DIY, Then im going to the dyno to see what difference these two parts made.
Then I'll install the Racing Beat Exhaust in the shop, the double tip not the single tip racing one they have. Dyno again and finally install the RB intake and dyno again.
Moving to tech garage. (omi what were you smoking)
03-02-2005, 12:00 PM
#68
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depends what you mean by gain...
will there be a gain seen at the crank - No
will there be a gain seen at the wheels - yes, as less power is consumed spinning the flywheel
if the car is in gear and it "revs faster" the only way its going to rev faster is if the car is accelerating faster, which means more power is reaching the wheels
will there be a gain seen at the crank - No
will there be a gain seen at the wheels - yes, as less power is consumed spinning the flywheel
if the car is in gear and it "revs faster" the only way its going to rev faster is if the car is accelerating faster, which means more power is reaching the wheels
03-02-2005, 12:33 PM
#69
Originally Posted by pr0ber
depends what you mean by gain...
will there be a gain seen at the crank - No
will there be a gain seen at the wheels - yes, as less power is consumed spinning the flywheel
if the car is in gear and it "revs faster" the only way its going to rev faster is if the car is accelerating faster, which means more power is reaching the wheels
will there be a gain seen at the crank - No
will there be a gain seen at the wheels - yes, as less power is consumed spinning the flywheel
if the car is in gear and it "revs faster" the only way its going to rev faster is if the car is accelerating faster, which means more power is reaching the wheels
The actual change in mass is not where the gain is felt with a flywheel. It is the lessening of the inertial load that changes the response time and inertial moment during rotation.
The total mass reduction isn't anything as far as power is concerned - you would have to take 100 lbs off of the FW to have it show up on the dyno as power.
In fact, lightening the FW will reduce torque as it shows up on a dyno.
03-02-2005, 01:25 PM
#70
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Originally Posted by PoLaK
SORRY SORRY SORRY for hijacking but how bout a picture to whet ur appitite.
http://www.polakgraphics.com/images/045_JFR.JPG
Pressure plate is lighter then stock but its still somewhere around 25-30lbs, HEAVY. And that big round thing in the bottom right is the throwout bearing we all love to hate so much hopefully when im done it won't be making any noise.
Anymore questions start another thread and direct me to it.
http://www.polakgraphics.com/images/045_JFR.JPG
Pressure plate is lighter then stock but its still somewhere around 25-30lbs, HEAVY. And that big round thing in the bottom right is the throwout bearing we all love to hate so much hopefully when im done it won't be making any noise.
Anymore questions start another thread and direct me to it.
Well, my noise went away after i replaced the the clutch disc. The springs are very loose and makes that awful noise. Atleast that what it was in my car! Since then she is noise free :D
03-02-2005, 02:06 PM
#71
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Im getting real tired of dyno graphs.....real performance data will always be found at a track...dyno is only a useful tuning tool not a way to measure performance....imo
03-02-2005, 02:10 PM
#72
I'm under the impression that torque will only be lost slightly at lower Rpm and that there will be a slight increase in wheel horsepower due to a decrease in drive train loses, is this difference so small that it can't me measured by a chassis dyno or does it really not "exist"
I agree its useful as a tunning tool or to compare if you're making gains with products your adding, you just have to do it on the same day, same dyno etc..... However, track performance its only as "real" as the driver so what good is that.
Originally Posted by DARKMAZ8
Im getting real tired of dyno graphs.....real performance data will always be found at a track...dyno is only a useful tuning tool not a way to measure performance....imo
Last edited by PoLaK; 03-02-2005 at 02:13 PM.
03-02-2005, 02:18 PM
#73
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Originally Posted by PoLaK
I agree its useful as a tunning tool or to compare if you're making gains with products your adding, you just have to do it on the same day, same dyno etc..... However, track performance its only as "real" as the driver so what good is that.
03-02-2005, 02:25 PM
#74
RX8 and a Truk....
Thread Starter
Originally Posted by DARKMAZ8
I believe the margin of error is greater with a dyno then a semi experienced driver.....trap speeds never lie
I was at the track and saw a Z06 Running 65mph trap speeds.
:D
03-02-2005, 02:44 PM
#75
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Originally Posted by dmp
I was at the track and saw a Z06 Running 65mph trap speeds.
:D
:D
hmmm let me guess.......slicks + wet track = slow *** vette..... :D