New owner of an imported FD3S
https://cimg1.ibsrv.net/gimg/www.rx7...c88385f785.jpg
Hello! New owner of an imported JDM FD3S. It's a 1996 model so I'm looking for some help tracking down some JDM specific parts. I'll be checking out the forum for resources but I'm sure I'll have questions soon. Appreciate any help given. This has been a dream of mine for years but finally able to own one. Of course it will need a bit of work. |
Beautiful car man, white looks great on the FD. More pics please!
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Supr nice . Is it a version 7?
Post up here as well when you get a chance. More and more RHD coming in almost daily! https://www.rx7club.com/3rd-gen-gene...ition-1148527/ |
Welcome to the forum!! Your FD appears to be in great condition! Would definitely love to see more pictures of the car!
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Welcome to forum
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Thank you! Yes, she's a Series 7 RS model. Cosmetically it's pretty good. Unfortunately finding more and more things to fix mechanically but she'll get there eventually.
https://cimg9.ibsrv.net/gimg/www.rx7...207ba6350c.jpg
Originally Posted by Redbul
(Post 12481762)
Supr nice . Is it a version 7?
Post up here as well when you get a chance. More and more RHD coming in almost daily! https://www.rx7club.com/3rd-gen-gene...ition-1148527/ |
Originally Posted by DeLorean
(Post 12481870)
Thank you! Yes, she's a Series 7 RS model. Cosmetically it's pretty good. Unfortunately finding more and more things to fix mechanically but she'll get there eventually.
https://cimg9.ibsrv.net/gimg/www.rx7...207ba6350c.jpg |
Originally Posted by Akagis_white_comet
(Post 12481886)
Welcome to the club. Seems like Series 7s are appearing outside of Japan more often now. Any certain things you're having issues with? I have most of the Japanese FD manuals and can help out a bit if you get stuck
Most disappointing was when I changed the diff fluid and found that a few chunks of tooth came out with it. I was going to make a post looking for the part number of the JDM 4.30 ring and pinion part number if you happen to know. |
Your ecu may be throwing you into limp mode; Frustrating your efforts of getting into the second turbo is a characteristic of this.
Find a way to run codes before you go further down the rabbit hole. Assuming you are still runny stock ecu. Run a smoke test to find any more tubing leaks. Akagi can probably provide you he wonderful chart of the exponential things that can go wrong. If you are changing out the dif look into the RX8 dif swap. Put a little spring in your step. |
Originally Posted by Redbul
(Post 12481923)
Your ecu may be throwing you into limp mode; Frustrating your efforts of getting into the second turbo is a characteristic of this.
Find a way to run codes before you go further down the rabbit hole. Assuming you are still runny stock ecu. Run a smoke test to find any more tubing leaks. Akagi can probably provide you he wonderful chart of the exponential things that can go wrong. If you are changing out the dif look into the RX8 dif swap. Put a little spring in your step. I've gone through a troubleshooting guide for the twin turbo system. Oddly enough when the primary turbo has been on low boost I've occasionally been able to get the secondary to come on over 4500RPM which doesn't make sense based on what I've read. Basically I'm seeing only a few psi boost at most from the primary, and rarely it seems the secondary comes to life when I hit the RPM threshold. I'm taking it in to a local specialist next week so hopefully they can have some trick to track down this issue. |
Find someone that can run codes with a JDM code reader.
If your specialist does not have one, ask him how he can work on JDM cars? * I don't know much about the RX8 dif swap, but a number of our group have done it. I think you can search it out on this site. (* ironically our best local shop does not have a code reader. They also refuse to fix stock set-up, and typically will rip everything out and go parrallel with an aftermarket ecu.. Don't be surprised if your specialist recommends this as well.) Note: some of the vacuum lines to the turbos have check valves hidden in them. If you change out with straight hose you may have issues. Also the filter for the MAP censor sometimes gets reversed. The ecu will go into limp mode is the OMP is malfunctioning. My OMP was blinking on and off and so confusing the ecu. Sometimes, if you sense you are in limp mode, you can pull over and shut down briefly. The ecu may re-set and work OK, until it cycles through it check cycle again and picks up whatever fault is bugging it. Watch out as well if your local specialist does not have JDM manuals, particularly for Series 7 and Series 8. There were substantial changes from the JDM S6 that is closer to USDM. |
Originally Posted by DeLorean
(Post 12481927)
Yes, would definitely like to know more about the RX-8 diff swap. Please feel free to DM info if it would be helpful.
I've gone through a troubleshooting guide for the twin turbo system. Oddly enough when the primary turbo has been on low boost I've occasionally been able to get the secondary to come on over 4500RPM which doesn't make sense based on what I've read. Basically I'm seeing only a few psi boost at most from the primary, and rarely it seems the secondary comes to life when I hit the RPM threshold. I'm taking it in to a local specialist next week so hopefully they can have some trick to track down this issue. |
Originally Posted by Akagis_white_comet
(Post 12481988)
I've uploaded the Series 6 Japanese and Series 7/8 vacuum diagram in the 3rd gen section's sticky thread. That should help you pin down the issue.
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Take this with you:
https://www.learn-japanese-adventure...ana-chart.html The chart is the alphabet for foreign words in Japanese. Much of the Japanese in charts is actually the English names for things written in Katakana. |
Originally Posted by Redbul
(Post 12482061)
Take this with you:
https://www.learn-japanese-adventure...ana-chart.html The chart is the alphabet for foreign words in Japanese. Much of the Japanese in charts is actually the English names for things written in Katakana. |
Originally Posted by DeLorean
(Post 12482288)
Thank you! Really appreciate the warm welcome and all the help. Looking forward to seeing what we can find out this week. Oddly enough all my boost came back suddenly yesterday so that might make it trickier to track down.
A useful trick to remove a vacuum hose for replacement with silicone is to carefully score it with a knife lengthwise where it is pushed onto the barb. Go back over the same line again, a little deeper until the resistance feels different. Remember, the rubber is only about 2-3mm thick. With that done, you should be able to insert a flathead jewelers screwdriver where your cut is and push/pry the hose sideways to separate it from the barb. For more info, see here: https://www.rx7club.com/3rd-generati...-stuff-802060/ Let me know if you get stuck on any linguistic matters. Sometimes, certain words and phrases can get a little murky when translating from Japanese. For example, "真空" means "Vacuum", but the characters individually translate to "True" and "Sky". "電圧" is Voltage, but the two characters mean "Electric" and "Pressure" respectively. If you combine the two examples, I think you can understand how things can go awry on a seemingly simple item. Mostly, it's harmless and you get "Washer Sauce" for "Windshield Washer Fluid" (they use the same characters), but it can go 8 grades of expletives fast such as suggesting the headlights are dead because "I haven't taken a bath"...:lol: Don't be afraid to ask for help. |
Might be a good idea to have a second ratbox on hand before you start taking one apart. They are about $500 each new.
A code test might tell you if any solenoids in your rat box are the cause for error. A smoke test will tell you if you have any leaks in your vacuum system. Am I repeating myself? The ecu may have reset itself, but could well go back to limp mode if the cause is still there. Some people loose boost from a collapsing intake pipe. It is unlikely in an S7, but not if a pipe has been replaced by someone at sometime with something less rigid. |
Originally Posted by Akagis_white_comet
(Post 12482306)
Under what conditions did it "come back"? Heat, rpm, road speed, etc? Trying to find the common thread to narrow it down. From a glance, this sounds like a vacuum system issue, such as a solenoid or check valve not opening/closing fully like they need to. I've seen the procedure to rebuild Series 7/8 "black box" (AKA Vacuum Unit in the diagram), but I have a sneaking suspicion that some parts may break from heat/age when attempting to disassemble it. While it likely won't be as brittle and "beaten down" as a Series 6 Solenoid Rack, due diligence and a gentle touch is always a good idea.
A useful trick to remove a vacuum hose for replacement with silicone is to carefully score it with a knife lengthwise where it is pushed onto the barb. Go back over the same line again, a little deeper until the resistance feels different. Remember, the rubber is only about 2-3mm thick. With that done, you should be able to insert a flathead jewelers screwdriver where your cut is and push/pry the hose sideways to separate it from the barb. For more info, see here: https://www.rx7club.com/3rd-generati...-stuff-802060/ Don't be afraid to ask for help. I haven't replaced every vacuum line but did quite a few of them as well as the short 90 degree one inch turbo hose to a valve. Clamps are now screw instead of spring. Replaced the brake booster hose with the factory check valve one as it was cracking. You're right it is a good idea to test/replace every check valve I can find on the vacuum system. Obviously I've got some work to do and reading on here of the stuff other owners have found. What is slightly concerning to me is the availability of the series 7 vacuum parts in the US. Is there a good source to find some of these little bits that may be JDM specific? I can guess that the USDM ones are likely the same but I'd like access to a series 7/8 parts catalog to try and cross reference numbers. |
Atkins in Olympia, Washington. Bring your wallet.
Mazdatrix. RHD Japan. Your local Mazda Dealer. Ray Crowe. (search this site) Ebay: Shotime. Tomsn16 (on here) UK Ebay sites: Rising Sun, Jimmy's, Jitt Rising Sun has lots of individual parts but they will not combine for shipping, which can get expensive. If all else fails. Give me a shout. |
Quote: "What is slightly concerning to me is the availability of the series 7 vacuum parts in the US. Is there a good source to find some of these little bits that may be JDM specific? I can guess that the USDM ones are likely the same but I'd like access to a series 7/8 parts catalog to try and cross reference numbers."
You should decide fairly soon if you are going to try and save the sequential set-up or rip all that stuff out. We have perhaps over 100 rhd up here and very few have managed to resusitate the sequential. The odds are stacked against you. There is a little tiny c-clip that connects your second turbo actuator to the valve arm. They tend to break off. As a result your big actuator could be detached. While you are at it, you may wish to replace the twin green solenoid hanging on the front of your UIM ($200) . I believe it operates the "big turbo" actuator and the wastgate (or moderates their operation). if one of those goes youj'd have syptoms such as you are describing. Be careful removing the vacuum hoses, you're more than likely to break off one of the nipples. (Please note that even "new" solenoids may have been banging around in parts bins for some time. I have heard there is a high failure rate even for "new" solenoids.) Your TPS can test OK, but go out of spec once it heats up. Check you spark plugs often. As you are burning oil, they can foul. If you have had corrosion in the gas tank, the sock protecting the intake can get fouled. |
Originally Posted by Redbul
(Post 12482355)
Quote: "What is slightly concerning to me is the availability of the series 7 vacuum parts in the US. Is there a good source to find some of these little bits that may be JDM specific? I can guess that the USDM ones are likely the same but I'd like access to a series 7/8 parts catalog to try and cross reference numbers."
You should decide fairly soon if you are going to try and save the sequential set-up or rip all that stuff out. We have perhaps over 100 rhd up here and very few have managed to resusitate the sequential. The odds are stacked against you. There is a little tiny c-clip that connects your second turbo actuator to the valve arm. They tend to break off. As a result your big actuator could be detached. While you are at it, you may wish to replace the twin green solenoid hanging on the front of your UIM ($200) . I believe it operates the "big turbo" actuator and the wastgate (or moderates their operation). if one of those goes youj'd have syptoms such as you are describing. Be careful removing the vacuum hoses, you're more than likely to break off one of the nipples. (Please note that even "new" solenoids may have been banging around in parts bins for some time. I have heard there is a high failure rate even for "new" solenoids.) Your TPS can test OK, but go out of spec once it heats up. Check you spark plugs often. As you are burning oil, they can foul. If you have had corrosion in the gas tank, the sock protecting the intake can get fouled. Also, having a second Vacuum Unit (black box) before starting is a good idea. Wouldn't be the first time I sourced something from Japan, but it does get expensive quick. |
Deep down in one of the Japanese manuals they have an exploded view of the rat box. I will see if I can dig it up.
But try to run codes before taking the rat box apart. They are pretty solid state, so less likely you have an air/vacuum leak inside. Also a smoke test ($50 at my local shop) could reveal any leaks in the rat box. Did you say you have run a fuel pressure test? |
Originally Posted by Redbul
(Post 12482401)
Deep down in one of the Japanese manuals they have an exploded view of the rat box. I will see if I can dig it up.
But try to run codes before taking the rat box apart. They are pretty solid state, so less likely you have an air/vacuum leak inside. Also a smoke test ($50 at my local shop) could reveal any leaks in the rat box. Did you say you have run a fuel pressure test? |
You also have the option of having the existing twin turbo set up to run "parrallel". This is achieved by having the valve/gate to the second turbo fixed open (among other things) . This has been done using the stock ecu, but much more commonly a Apexi Power FC replaces the stock ecu. Other aftermarket ecu may also work with the parrallel set-up. Stock ecu might never get happy if it senses a bunch of missing solenoids.
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