The Great Renesis Porting Project!
#526
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HAHAHAHA...i am such a nerd.
ok, we got fuel, no spark.. under what conditions would the injectors be getting a signal, but not the coils? NONE! so it's definately in the ignition system--all 4 coils simultaneously burnout all at once? not in a million years... it's a control problem.
so i popped the lid on the ecu box and sure enough, one of the connectors wasn't snapped in all the way...my bad
what a rookie mistake!!!!!!!!
plugged it back in, 2 bumps and it came to life :D
idles perfectly. obd2 data is normal
i'm going to get the air flow rate from the maf sensor when the motor has run in. i want to see if it's any more efficient at idle. can anyone get their airflow rate on a warm engine @ idle so we can compare?
i'm off to button everythign up and take the maiden voyage to the car wash.![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
dyno results hopefully within a week!!!!!!!!!!
ok, we got fuel, no spark.. under what conditions would the injectors be getting a signal, but not the coils? NONE! so it's definately in the ignition system--all 4 coils simultaneously burnout all at once? not in a million years... it's a control problem.
so i popped the lid on the ecu box and sure enough, one of the connectors wasn't snapped in all the way...my bad
what a rookie mistake!!!!!!!!
plugged it back in, 2 bumps and it came to life :D
idles perfectly. obd2 data is normal
i'm going to get the air flow rate from the maf sensor when the motor has run in. i want to see if it's any more efficient at idle. can anyone get their airflow rate on a warm engine @ idle so we can compare?
i'm off to button everythign up and take the maiden voyage to the car wash.
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
dyno results hopefully within a week!!!!!!!!!!
#528
Registered
Originally Posted by guitarjunkie28
HAHAHAHA...i am such a nerd.
ok, we got fuel, no spark.. under what conditions would the injectors be getting a signal, but not the coils? NONE! so it's definately in the ignition system--all 4 coils simultaneously burnout all at once? not in a million years... it's a control problem.
so i popped the lid on the ecu box and sure enough, one of the connectors wasn't snapped in all the way...my bad
what a rookie mistake!!!!!!!!
plugged it back in, 2 bumps and it came to life :D
idles perfectly. obd2 data is normal
i'm going to get the air flow rate from the maf sensor when the motor has run in. i want to see if it's any more efficient at idle. can anyone get their airflow rate on a warm engine @ idle so we can compare?
i'm off to button everythign up and take the maiden voyage to the car wash.![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
dyno results hopefully within a week!!!!!!!!!!
ok, we got fuel, no spark.. under what conditions would the injectors be getting a signal, but not the coils? NONE! so it's definately in the ignition system--all 4 coils simultaneously burnout all at once? not in a million years... it's a control problem.
so i popped the lid on the ecu box and sure enough, one of the connectors wasn't snapped in all the way...my bad
what a rookie mistake!!!!!!!!
plugged it back in, 2 bumps and it came to life :D
idles perfectly. obd2 data is normal
i'm going to get the air flow rate from the maf sensor when the motor has run in. i want to see if it's any more efficient at idle. can anyone get their airflow rate on a warm engine @ idle so we can compare?
i'm off to button everythign up and take the maiden voyage to the car wash.
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
dyno results hopefully within a week!!!!!!!!!!
Make A Video
#530
Registered
Originally Posted by guitarjunkie28
so i popped the lid on the ecu box and sure enough, one of the connectors wasn't snapped in all the way...my bad
what a rookie mistake!!!!!!!!
#531
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Not only is this the most interesting thread on the forum, but this is happening at Christmas! Right on cue....
Now we just need to hear that Snoochie's engine is getting another 15+ hp and we can start celebrating! :D
Now we just need to hear that Snoochie's engine is getting another 15+ hp and we can start celebrating! :D
#532
Administrator
i'd like to believe that a really good porting of the intake and exhaust could find as much as 20%-30% more whp. so douple your above number or more. i dont remember what his original dyno number was. but if it was like 180-190 id like to see a 210-240 whp number.
#534
Originally Posted by zoom44
i'd like to believe that a really good porting of the intake and exhaust could find as much as 20%-30% more whp. so douple your above number or more. i dont remember what his original dyno number was. but if it was like 180-190 id like to see a 210-240 whp number.
![EEK!](https://www.rx8club.com/images/smilies/eek.gif)
Edit: On that note, it was gjunkie that said it's not about the HP numbers, it's about the %.. and I totally agree.. if he adds 20-30%, that's an AMAZING number.. and I want to get in line for my own pretty rotors.. :D
Last edited by webba_az; 12-22-2004 at 04:08 PM.
#535
Now I have a general porting stupid question.. would porting the exhaust egress make turbos more efficient? More flow = more spin, or no? Is this one of those things that we're effectively all going to need to do to make all other mods worth doing? (Sure sounds that way)
#536
port hacker
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the exhaust porting would most definately help the turbo spoolup. no question about it. as far as the efficiency is concerned, that'll have to be determined through research and testing.
my best guess is with the porting, you could use a larger a/r turbine housing and get the same spoolup as a lower a/r with the stock ports, but the larger a/r will always give you more hp per pound of boost.
anyhoo, went to the car wash in my traditional maiden voyage style... car ran beautifully. i didn't stomp on it or anything, but since nothing mechanically went wrong, i'm happy.
BUT
we got a check engine light.
i pulled code p0300 (random misfire)
my hypothesis on this is either
1) motor just needs to run in and get everything re-seated
or
2) possibly, it's using more air and the maf sensor isn't calibrated for it... in which case, i'd think lean misfire. but it's running in closed loop, so it should correct unless it was using a LOT more air and fuel. so if that's the case, we may need to go with some kind of management....e-manage, canzoomer, etc.
it's premature to say what's wrong and what it'll take to fix it, so i'm just going to run in some miles on it today and see where it ends up. any other ideas on what's going on are more than welcome. i do have a feeling it'll probably be fine once it's run in, but only time will tell.
and rg you were right. i just needed some daylight and a fresh point of view to figure it out. sleep does wonders for problem solving ability...i haven't got much since the car got jacked.
my best guess is with the porting, you could use a larger a/r turbine housing and get the same spoolup as a lower a/r with the stock ports, but the larger a/r will always give you more hp per pound of boost.
anyhoo, went to the car wash in my traditional maiden voyage style... car ran beautifully. i didn't stomp on it or anything, but since nothing mechanically went wrong, i'm happy.
BUT
we got a check engine light.
i pulled code p0300 (random misfire)
my hypothesis on this is either
1) motor just needs to run in and get everything re-seated
or
2) possibly, it's using more air and the maf sensor isn't calibrated for it... in which case, i'd think lean misfire. but it's running in closed loop, so it should correct unless it was using a LOT more air and fuel. so if that's the case, we may need to go with some kind of management....e-manage, canzoomer, etc.
it's premature to say what's wrong and what it'll take to fix it, so i'm just going to run in some miles on it today and see where it ends up. any other ideas on what's going on are more than welcome. i do have a feeling it'll probably be fine once it's run in, but only time will tell.
and rg you were right. i just needed some daylight and a fresh point of view to figure it out. sleep does wonders for problem solving ability...i haven't got much since the car got jacked.
Last edited by guitarjunkie28; 12-22-2004 at 04:28 PM.
#541
Administrator
Originally Posted by webba_az
His orig dyno was in the 160s
I'd expect 190-210 from that baseline.. hopefully I'm wrong on the good side (i.e. more power)
Edit: On that note, it was gjunkie that said it's not about the HP numbers, it's about the %.. and I totally agree.. if he adds 20-30%, that's an AMAZING number.. and I want to get in line for my own pretty rotors.. :D
![EEK!](https://www.rx8club.com/images/smilies/eek.gif)
Edit: On that note, it was gjunkie that said it's not about the HP numbers, it's about the %.. and I totally agree.. if he adds 20-30%, that's an AMAZING number.. and I want to get in line for my own pretty rotors.. :D
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
#542
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Now I don't know alot about rotarys but never have I seen more then 10% increase. And that was on old old engine designs. 30% would mean it left the factory with nail holes for ports.
The people who design engines didn't just get those jobs because they were stupid.
When I was a kid I thought the engineers in Detroit were stupid, didn't they read hot rod magazines. If they did they would know how to make more power.
As a lad grows into a man he finds his father has gotten smarter.
The people who design engines didn't just get those jobs because they were stupid.
When I was a kid I thought the engineers in Detroit were stupid, didn't they read hot rod magazines. If they did they would know how to make more power.
As a lad grows into a man he finds his father has gotten smarter.
#543
port hacker
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when i streetported my fc motor, hp went from 238 to 300 at the same boost level.
what's that, like 26%? i advanced the port timing WAY out, though.
i'm not expecting anything drastic on this motor, just something solid all across the rpm band.
i held my hand over the exhaust with the engine running for however long it takes me to smoke a cig.. ~5 minutes? it popped only twice. i think the misfire monitor is being too bitchy. LOL
what's that, like 26%? i advanced the port timing WAY out, though.
i'm not expecting anything drastic on this motor, just something solid all across the rpm band.
i held my hand over the exhaust with the engine running for however long it takes me to smoke a cig.. ~5 minutes? it popped only twice. i think the misfire monitor is being too bitchy. LOL
#544
Registered
Richard, porting a rotary is the piston equivalent to changing the camshaft and installing larger valves on a piston engine. That most certainly can give a piston engine more than 10% more power.
#546
Administrator
Originally Posted by Richard Paul
30% would mean it left the factory with nail holes for ports.
The people who design engines didn't just get those jobs because they were stupid.
The people who design engines didn't just get those jobs because they were stupid.
"look at that port!! it's surprising they make any power at all!" :D
#548
Registered
Originally Posted by zoom44
well to quote a certain person whom i finally met in person at 7stock when we first got our hands on time with the housings-
"look at that port!! it's surprising they make any power at all!" :D
"look at that port!! it's surprising they make any power at all!" :D
![Wink](https://www.rx8club.com/images/smilies/wink.gif)
#549
Originally Posted by Richard Paul
ASk Hymee, I think he has the flow rates already.
What scanner are you using? And what other data do you want to compare?
Can you read IPW to see if it is a lean issue?
EDIT...after pulling the engine did you reset the plate profile with the brake pedal dance?