Kilo Racing 3 Rotor FD Conversion
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The voltage issue is still there. During cruising, the car is fine and volts stay at a constant 13.7 or so. Under boost though, the voltage drops to 12.7. The difference now is that the drop stays constant at this level (versus wide flucuations before the new alternator) and then immediately recovers to 13.7 after you let off boost. The new alternator is installed and is completely rewired with 4 gauge wiring so this won't be the issue. We're trying a Jacobs 1500 watt Accuvolt unit to correct the problem. This unit supplies a constant voltage to the car regardless of flucuations from the alternator. If this doesn't work, then it's going to be a bitch to troubleshoot where the draw is occuring.
Should know more next week.
The voltage issue is still there. During cruising, the car is fine and volts stay at a constant 13.7 or so. Under boost though, the voltage drops to 12.7. The difference now is that the drop stays constant at this level (versus wide flucuations before the new alternator) and then immediately recovers to 13.7 after you let off boost. The new alternator is installed and is completely rewired with 4 gauge wiring so this won't be the issue. We're trying a Jacobs 1500 watt Accuvolt unit to correct the problem. This unit supplies a constant voltage to the car regardless of flucuations from the alternator. If this doesn't work, then it's going to be a bitch to troubleshoot where the draw is occuring.
Should know more next week.
Is your ECU triggering a function that draws heavy current under boost (e.g., fuel-pumps; fans; water sprayer, etc.) ?
Electrical draws are a PITA (try chasing a 1.5-amp draw in an electrically laden Mercedes), but via divide & conquer, you will find it or at least which BRANCH off the positive leads the draw is coming from.
Good luck,
:-) neil
Slight update: still don't have the car. Got to drive it yesterday. Steve Kan kept saying "don't let off the gas!". I don't know, it gets kinda scary above 130 MPH in Dallas traffic
The coolant problem is fixed. The car now runs below 200F so that's good. The voltage issue is still there. During cruising, the car is fine and volts stay at a constant 13.7 or so. Under boost though, the voltage drops to 12.7. The difference now is that the drop stays constant at this level (versus wide flucuations before the new alternator) and then immediately recovers to 13.7 after you let off boost. The new alternator is installed and is completely rewired with 4 gauge wiring so this won't be the issue. We're trying a Jacobs 1500 watt Accuvolt unit to correct the problem. This unit supplies a constant voltage to the car regardless of flucuations from the alternator. If this doesn't work, then it's going to be a bitch to troubleshoot where the draw is occuring.
Should know more next week.
The coolant problem is fixed. The car now runs below 200F so that's good. The voltage issue is still there. During cruising, the car is fine and volts stay at a constant 13.7 or so. Under boost though, the voltage drops to 12.7. The difference now is that the drop stays constant at this level (versus wide flucuations before the new alternator) and then immediately recovers to 13.7 after you let off boost. The new alternator is installed and is completely rewired with 4 gauge wiring so this won't be the issue. We're trying a Jacobs 1500 watt Accuvolt unit to correct the problem. This unit supplies a constant voltage to the car regardless of flucuations from the alternator. If this doesn't work, then it's going to be a bitch to troubleshoot where the draw is occuring.
Should know more next week.
David, how large and how new is your battery ?
Is your ECU triggering a function that draws heavy current under boost (e.g., fuel-pumps; fans; water sprayer, etc.) ?
Electrical draws are a PITA (try chasing a 1.5-amp draw in an electrically laden Mercedes), but via divide & conquer, you will find it or at least which BRANCH off the positive leads the draw is coming from.
Good luck,
:-) neil
Is your ECU triggering a function that draws heavy current under boost (e.g., fuel-pumps; fans; water sprayer, etc.) ?
Electrical draws are a PITA (try chasing a 1.5-amp draw in an electrically laden Mercedes), but via divide & conquer, you will find it or at least which BRANCH off the positive leads the draw is coming from.
Good luck,
:-) neil
Yes, the ECU is triggering several functions under boost - the two fuel pumps and the aquamist water injection system immediately come to mind. Don't know about the fans though - these would come on under cruise conditions and we're not noticing a draw then. Can also eliminate lights and the radio as we didn't have these on while we tested the car.
The back up plan if the Jacobs unit fails is to put the car on the dyno and start tracing draws as you described. Probably should do this anyway.
Not that I don't want you to finish your car...
I say you just need to say screw it and I will politelly let you park the the thing permanently at my house how does that sound. Plus it would be really cool if you could make here for the tuning if the car is ready my wife after hearing it on the dyno in atlanta wants to see the car.
how does that sound. Plus it would be really cool if you could make here for the tuning if the car is ready my wife after hearing it on the dyno in atlanta wants to see the car.
Good to see your not giving up
Yeah. I think a nice Scoot hood would fit just nicely on your beast.
Yeah. I think a nice Scoot hood would fit just nicely on your beast.
marky
Joined: Mar 2005
Posts: 821
Likes: 0
From: Bothell, WA
Hey, David, just thought I'd throw in some props for your project.
I live about 10 minutes away from Gotham and am up there fairly often for little odds and ends. On numerous occasions I have scoped out your car and been absolutely amazed. It's truly a beautiful car, and the swap is so clean!
Obviously you're a patient guy and you haven't seriously considered giving the project up, but I know how discouraging these cars can be some times and just wanted to throw some positive feedback into this mess of a thread.
If you wouldn't mind, let us know when you're on your way back here to Watauga. I'd like to stop by and chat with you and hear the car and stuff if I could get a chance.
Regards,
Mark A.
I live about 10 minutes away from Gotham and am up there fairly often for little odds and ends. On numerous occasions I have scoped out your car and been absolutely amazed. It's truly a beautiful car, and the swap is so clean!
Obviously you're a patient guy and you haven't seriously considered giving the project up, but I know how discouraging these cars can be some times and just wanted to throw some positive feedback into this mess of a thread.
If you wouldn't mind, let us know when you're on your way back here to Watauga. I'd like to stop by and chat with you and hear the car and stuff if I could get a chance.
Regards,
Mark A.
I say you just need to say screw it and I will politelly let you park the the thing permanently at my house how does that sound. Plus it would be really cool if you could make here for the tuning if the car is ready my wife after hearing it on the dyno in atlanta wants to see the car.
how does that sound. Plus it would be really cool if you could make here for the tuning if the car is ready my wife after hearing it on the dyno in atlanta wants to see the car.When is the tuning session in SC? This may be a good place to pick up the car.
june 9-10. just PM me if you want in on it.
https://www.rx7club.com/se-rx-7-forum-35/steve-kan-tuning-spartanburg-south-carolina-6-9-6-10-a-642229/
https://www.rx7club.com/se-rx-7-forum-35/steve-kan-tuning-spartanburg-south-carolina-6-9-6-10-a-642229/
Hey, David, just thought I'd throw in some props for your project.
I live about 10 minutes away from Gotham and am up there fairly often for little odds and ends. On numerous occasions I have scoped out your car and been absolutely amazed. It's truly a beautiful car, and the swap is so clean!
Obviously you're a patient guy and you haven't seriously considered giving the project up, but I know how discouraging these cars can be some times and just wanted to throw some positive feedback into this mess of a thread.
If you wouldn't mind, let us know when you're on your way back here to Watauga. I'd like to stop by and chat with you and hear the car and stuff if I could get a chance.
Regards,
Mark A.
I live about 10 minutes away from Gotham and am up there fairly often for little odds and ends. On numerous occasions I have scoped out your car and been absolutely amazed. It's truly a beautiful car, and the swap is so clean!
Obviously you're a patient guy and you haven't seriously considered giving the project up, but I know how discouraging these cars can be some times and just wanted to throw some positive feedback into this mess of a thread.
If you wouldn't mind, let us know when you're on your way back here to Watauga. I'd like to stop by and chat with you and hear the car and stuff if I could get a chance.
Regards,
Mark A.
Thanks for the note and the positive feedback. Hopefully I won't be back to Watauga. The plan is for Gotham to deliver the car to me but you never know. Maybe I'll fly back in and drive the car home as originally planned.
Now go to Gotham for me and watch over Alex and Brian. I'm sure they'd really like that
june 9-10. just PM me if you want in on it.
https://www.rx7club.com/showthread.php?t=642229
https://www.rx7club.com/showthread.php?t=642229
Spartanburg is about 6 hours from me and we have property in Asheville that we're now building on. Maybe I'll rent a car to get to Spartanburg and then drive the FD up to Asheville. Don't want to wait this long but it's a good plan B.
would someone mind providing a synopsis of this thread? lol I started back with your 2004 post and made it about half way before I had to call it quits to get back to work. Just where the car has been the last 3 yrs and what the hurdles were along the way....
Beutiful looking build BTW David.
Beutiful looking build BTW David.
2004 - 2005: Pettit Racing for the 20B conversion; couldn't finish the tune.
Mid 2005: Had the car for a few months, improved the tune but blew out the secondary turbo; decided to go single.
Mid 2005 - Mid 2006: Car at Wolf EMS USA for single turbo conversion. Multiple issues caused by Chris Greene; "stole" car back in August and sent car to Gotham Racing for job completion.
September 2006 - Present: Car at Gotham Racing; numerous issues uncovered with prior work; turbo, Haltech E11, water inejection, etc. installed; several pickup attempts not sucessful; car had coolant and voltage drop issues; coolant issue fixed but voltage drop remains; alternator and wiring replaced, helps but doesn't completely solve problem; Jacobs Accuvolt unit to arrive on Monday; the ending, ??
Mid 2005: Had the car for a few months, improved the tune but blew out the secondary turbo; decided to go single.
Mid 2005 - Mid 2006: Car at Wolf EMS USA for single turbo conversion. Multiple issues caused by Chris Greene; "stole" car back in August and sent car to Gotham Racing for job completion.
September 2006 - Present: Car at Gotham Racing; numerous issues uncovered with prior work; turbo, Haltech E11, water inejection, etc. installed; several pickup attempts not sucessful; car had coolant and voltage drop issues; coolant issue fixed but voltage drop remains; alternator and wiring replaced, helps but doesn't completely solve problem; Jacobs Accuvolt unit to arrive on Monday; the ending, ??
Banned. I got OWNED!!!
Joined: Mar 2002
Posts: 4,236
Likes: 0
From: Las Vegas, NV
Yah the tuning sssion sucked for me. I'm just going to swap out the link ECU for a E11.. I don't have the time to mess with it. The few pulls we did @ 6psi were pretty good. I'll run 12psi with the twins for a while..
I sense that a happy ending is near 
2004 - 2005: Pettit Racing for the 20B conversion; couldn't finish the tune.
Mid 2005: Had the car for a few months, improved the tune but blew out the secondary turbo; decided to go single.
Mid 2005 - Mid 2006: Car at Wolf EMS USA for single turbo conversion. Multiple issues caused by Chris Greene; "stole" car back in August and sent car to Gotham Racing for job completion.
September 2006 - Present: Car at Gotham Racing; numerous issues uncovered with prior work; turbo, Haltech E11, water inejection, etc. installed; several pickup attempts not sucessful; car had coolant and voltage drop issues; coolant issue fixed but voltage drop remains; alternator and wiring replaced, helps but doesn't completely solve problem; Jacobs Accuvolt unit to arrive on Monday; the ending, ??
Mid 2005: Had the car for a few months, improved the tune but blew out the secondary turbo; decided to go single.
Mid 2005 - Mid 2006: Car at Wolf EMS USA for single turbo conversion. Multiple issues caused by Chris Greene; "stole" car back in August and sent car to Gotham Racing for job completion.
September 2006 - Present: Car at Gotham Racing; numerous issues uncovered with prior work; turbo, Haltech E11, water inejection, etc. installed; several pickup attempts not sucessful; car had coolant and voltage drop issues; coolant issue fixed but voltage drop remains; alternator and wiring replaced, helps but doesn't completely solve problem; Jacobs Accuvolt unit to arrive on Monday; the ending, ??
