Murf 928 vs. Twin Screw
#106
Like I said, I felt it was high as well. When I get around to it, I'll get it done on a dynojet. I am just enjoying driving it, and really could care less what the final dyno numbers are. It is quite fast for a street car, and is just a blast to drive. I don't have a "dyno queen", and am quite happy with whatever it has right now. I have yet to have a passenger complain about the car being too slow.
Jim
Jim
#108
Originally Posted by marc@DEVEK
how about we gather some data:
It would be very intersting to see a chart of the following
rwhp
rpm for peak rwhp
rwtq
repm for peak rwtq
octane for run
boost level for run
ambiant air temperature
And include "Type of boost". A nice matrix with three cols and the above as rows ...
It would be very intersting to see a chart of the following
rwhp
rpm for peak rwhp
rwtq
repm for peak rwtq
octane for run
boost level for run
ambiant air temperature
And include "Type of boost". A nice matrix with three cols and the above as rows ...
So....Here it is again so "we" can can gather.
As far as TS vs CF...
#1 first and foremost, its a personall choice of what you want to do .
#2 its a personal choice
This pissing contest goes around and around..and will again. I just share what ive experienced so others can make there own personal choice.
The guy around the track first wins.
The guy with the best 1/4 mile wins.
The guy with the fastest 0-60 time wins.
The guy who goes the fastest in a straight line wins.
The guy who REALLY wins is the one that can do all of that with the same package and prove it....you all can fight over that title. Its not what i do this for. Ill just enjoy my car and messing with it in the meantime
Anywhooooo...
I had a little "data binder" on the fender of my car at sharktoberfest.
my 3 dyno runs...2 with water injection...1 without. Of the 2 runs with water/meth one was higher than non water...the other lower...so go figure as far as the gains from it?? they were all within 3rwhp an 5ftlbs
The data log is from the 402 rwhp pull
The 1/4 times from the drag strip
The 0-60 times from a GTECH PRO during the same runs as the times slips...all at the power level shown on the dyno.
ambient air temp is on the dyno chart..which is much differnt that what the car reads at the filter...sc inlet...sc outlet..and I/C outlet
I wonder what temp changes occur just above the intake valve as the "cooler" fuel is added to the airstream?
91 oct..RMB..cat bypass with glass pack welded in.
(edit)
after 1 yr and app 4800 miles daily driving, every day seeing boost at some point,, 110 air temps in the summer, original belts, one blown up MAF (operator error ) thats about it. No issues or mtc beyond what you coudl expect in a "normal 928"
I had the crank bolt back out , but that was hrs after the install and initial start up...no issues related to date with that. BIGGER and STONGER BOLT, BLUE LOCTITE and a PROPER TQ Wrench.
All the airleaks have been found..idles fine
Last edited by Tony; 10-24-2005 at 02:17 AM.
#109
Originally Posted by Derek 86.5
I believe that most of the Murph crowd got their feelings hurt a couple of months back and have been scarce ever since.
Lag, Tim, Z, seem to have vanished completely.
Gretch is still around, a little, but even he doesnt post as often as he used to.
Personnaly speaking, I think it is a real shame and loss to the board. Having contrary viewpoints and opinions makes for a stronger forum where more information can be freely submitted and exchanged.
Just because the discussions, at times, become heated is no reason to take your toys and go home.
Even Andy rarely posts here anymore...I would guess for the same reasons.
I would like to add that I respected the opinions, views, facts, and information each of these individuals provided to the board....Even if I didnt always agree.
I find it regretful that they no longer participate in the discussion.
Ultimately, we ARE all on the same team here guys...even those turbo jokers.
Lag, Tim, Z, seem to have vanished completely.
Gretch is still around, a little, but even he doesnt post as often as he used to.
Personnaly speaking, I think it is a real shame and loss to the board. Having contrary viewpoints and opinions makes for a stronger forum where more information can be freely submitted and exchanged.
Just because the discussions, at times, become heated is no reason to take your toys and go home.
Even Andy rarely posts here anymore...I would guess for the same reasons.
I would like to add that I respected the opinions, views, facts, and information each of these individuals provided to the board....Even if I didnt always agree.
I find it regretful that they no longer participate in the discussion.
Ultimately, we ARE all on the same team here guys...even those turbo jokers.
#110
The person who has the most fun doing all of these things is the real winner. I think that would be you, Tony.
Originally Posted by Tony
Data... Ive posted it all before. Im pretty open and upfront about what ive done with the car...issues i have had and shared what it can do in its curernt state.
So....Here it is again so "we" can can gather.
As far as TS vs CF...
#1 first and foremost, its a personall choice of what you want to do .
#2 its a personal choice
This pissing contest goes around and around..and will again. I just share what ive experienced so others can make there own personal choice.
The guy around the track first wins.
The guy with the best 1/4 mile wins.
The guy with the fastest 0-60 time wins.
The guy who goes the fastest in a straight line wins.
The guy who REALLY wins is the one that can do all of that with the same package and prove it....you all can fight over that title. Its not what i do this for. Ill just enjoy my car and messing with it in the meantime
Anywhooooo...
I had a little "data binder" on the fender of my car at sharktoberfest.
my 3 dyno runs...2 with water injection...1 without. Of the 2 runs with water/meth one was higher than non water...the other lower...so go figure as far as the gains from it?? they were all within 3rwhp an 5ftlbs
The data log is from the 402 rwhp pull
The 1/4 times from the drag strip
The 0-60 times from a GTECH PRO during the same runs as the times slips...all at the power level shown on the dyno.
ambient air temp is on the dyno chart..which is much differnt that what the car reads at the filter...sc inlet...sc outlet..and I/C outlet
I wonder what temp changes occur just above the intake valve as the "cooler" fuel is added to the airstream?
91 oct..RMB..cat bypass with glass pack welded in.
(edit)
after 1 yr and app 4800 miles daily driving, every day seeing boost at some point,, 110 air temps in the summer, original belts, one blown up MAF (operator error ) thats about it. No issues or mtc beyond what you coudl expect in a "normal 928"
I had the crank bolt back out , but that was hrs after the install and initial start up...no issues related to date with that. BIGGER and STONGER BOLT, BLUE LOCTITE and a PROPER TQ Wrench.
All the airleaks have been found..idles fine
So....Here it is again so "we" can can gather.
As far as TS vs CF...
#1 first and foremost, its a personall choice of what you want to do .
#2 its a personal choice
This pissing contest goes around and around..and will again. I just share what ive experienced so others can make there own personal choice.
The guy around the track first wins.
The guy with the best 1/4 mile wins.
The guy with the fastest 0-60 time wins.
The guy who goes the fastest in a straight line wins.
The guy who REALLY wins is the one that can do all of that with the same package and prove it....you all can fight over that title. Its not what i do this for. Ill just enjoy my car and messing with it in the meantime
Anywhooooo...
I had a little "data binder" on the fender of my car at sharktoberfest.
my 3 dyno runs...2 with water injection...1 without. Of the 2 runs with water/meth one was higher than non water...the other lower...so go figure as far as the gains from it?? they were all within 3rwhp an 5ftlbs
The data log is from the 402 rwhp pull
The 1/4 times from the drag strip
The 0-60 times from a GTECH PRO during the same runs as the times slips...all at the power level shown on the dyno.
ambient air temp is on the dyno chart..which is much differnt that what the car reads at the filter...sc inlet...sc outlet..and I/C outlet
I wonder what temp changes occur just above the intake valve as the "cooler" fuel is added to the airstream?
91 oct..RMB..cat bypass with glass pack welded in.
(edit)
after 1 yr and app 4800 miles daily driving, every day seeing boost at some point,, 110 air temps in the summer, original belts, one blown up MAF (operator error ) thats about it. No issues or mtc beyond what you coudl expect in a "normal 928"
I had the crank bolt back out , but that was hrs after the install and initial start up...no issues related to date with that. BIGGER and STONGER BOLT, BLUE LOCTITE and a PROPER TQ Wrench.
All the airleaks have been found..idles fine
#111
Captain Obvious
Super User
Super User
Joined: Aug 2003
Posts: 22,846
Likes: 340
From: Cambridge, Ontario, Canada
Originally Posted by Jim_H
The person who has the most fun doing all of these things is the real winner. I think that would be you, Tony.
It’s even more fun when you build the whole thing yourself. Feels great when you build something out of nothing!
#112
Thanks Jim
I enjoy it, thats for sure, even with all the hurdles and road blocks. Its a passion and a hobby which is why my wife is pretty good about it. She does have her limits however...parts in her oven and things like that
For Imo000's statement, to clarify things a little, the manifold , I/C, pulleys, and part of the rear inlet on the SC was not my doing.
I believe imo00 that you are speaking in refereence to the fact that you fab'd up your own complete SC set up? Correct?
pics?
Many of us are looking for a nice inlet system on the front of the car, any ideas??
. I think that is where we should all put our heads together. DR has it nailed but for those with original Twin screw/eaton kits there isnt going to be enough commonality to bolt up one of Daves sweet twin TB intakes from what ive heard.
I enjoy it, thats for sure, even with all the hurdles and road blocks. Its a passion and a hobby which is why my wife is pretty good about it. She does have her limits however...parts in her oven and things like that
For Imo000's statement, to clarify things a little, the manifold , I/C, pulleys, and part of the rear inlet on the SC was not my doing.
I believe imo00 that you are speaking in refereence to the fact that you fab'd up your own complete SC set up? Correct?
pics?
Many of us are looking for a nice inlet system on the front of the car, any ideas??
. I think that is where we should all put our heads together. DR has it nailed but for those with original Twin screw/eaton kits there isnt going to be enough commonality to bolt up one of Daves sweet twin TB intakes from what ive heard.
#114
Originally Posted by Herr-Kuhn
Ah yes...silent development! This reminds me there is much work to be done in KY as well! Well said Gretch! I should still come and visit you in NH sometime.
Work season is (mostly) over on the farm.....hunting season is upon us. One moose in the freezer already.....deer stands went up last weekend. I still have a couple of weeks to try and "talk" a bear into the freezer.....
Soon as I get my cross over exhaust and cats from Dave and Jeannie I will move Gretch to the shop and begin playing again. May get my egt senders and gauges in this year too....
Time to start planning for snow.....Hoo rah........
#115
Actually, the DynaPAK generally reads lower than a DynoJet ... we ran a 996 back to back, same day, same car and was able to "calibrate" the dynaPAK. Jims readings were conservative!
Keep in mind that weekend, we dyno'd the white car, and made 484 rwhp, and shortly before made slightly over 500 rwhp at the DynoJet.
We now know run the dyno so that the readings are within 1-2% of the dynonet .. for what it is worth.
Marc
Keep in mind that weekend, we dyno'd the white car, and made 484 rwhp, and shortly before made slightly over 500 rwhp at the DynoJet.
We now know run the dyno so that the readings are within 1-2% of the dynonet .. for what it is worth.
Marc
#116
Captain Obvious
Super User
Super User
Joined: Aug 2003
Posts: 22,846
Likes: 340
From: Cambridge, Ontario, Canada
Originally Posted by Tony
For Imo000's statement, to clarify things a little, the manifold , I/C, pulleys, and part of the rear inlet on the SC was not my doing.
I believe imo00 that you are speaking in refereence to the fact that you fab'd up your own complete SC set up? Correct?
pics?
I believe imo00 that you are speaking in refereence to the fact that you fab'd up your own complete SC set up? Correct?
pics?
https://rennlist.com/forums/928-forum/230334-first-time-at-the-drags-with-the-sc.html
#117
Check out the 928 Motorsports "Tuner's Kit" and then find your own supercharger head unit on Ebay. You will save a thousand or two and actually end up with a supercharger system on your car. Fabing your own is not that easy.
Mark
DFWX
Mark
DFWX
#118
sueprcharger
Check out the 928 Motorsports "Tuner's Kit" and then find your own supercharger head unit on Ebay. You will save a thousand or two and actually end up with a supercharger system on your car. Fabing your own is not that easy.
Mark
DFWX
Mark
DFWX
#120
Hi Marc why don't you do a 1/4 mile run for us all, I'm sure there is plenty of interest. Dyno runs are one thing 1/4 mile and the standing kilometer another. I would love to see such a run, what about others?
Greg
Greg