Finally bought an FD
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Joined: Oct 2024
Posts: 64
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From: Jax Fl
Finally bought an FD
I’ve been searching for a stockish low miles white FD for awhile and just bought one last week from out of state. Should get delivered this weekend. Don’t have any set plans for it, first priority is maintenance/ confirm it’s running properly. Im never driven an FD or even sat in one. I just like the looks and also am intrigued by the rotary. Should be fun
Welcome to the forum. There is a lot of good information on this forum. It is old school but very informative. You can check my build 93 improving a great sports car or my youtube channel Arrivendrive for information. All members here are hard-core rotary fans and ready to help.
Thread Starter
Full Member
Joined: Oct 2024
Posts: 64
Likes: 39
From: Jax Fl
Got the car and took it for a drive. it appears to not be boosting correctly. looks like its got a RB intake duct, downpipe and RB muffler. it hits around 12 psi then drops to 5 psi around 5k and keeps moving downward. off to search the forum on troubleshooting!
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Is your check engine light coming on?
Maybe have a shop "run codes".in any event.
If you still have sequential turbo, your back turbo might not be kicking in, or:
perhaps several solenoids are not working as they should and various gates within the turbo system may be opening at the wrong time.
Such as the waste gate.
In addition to checking codes, have the garage do a "smoke test" to see if you have any significant boost leaks.
Do an eyeball of the large rubber collar on top of the "Y-pipe" . to see if it is damaged or loose.
Are any of the rubber pipes before and after the intercooler buckling under boost?
There may be a blockage in your intake piping before the intercooler.
Is the air filter clean?
Check the several blow-off valves are still working.
All these are fairly easy checks before you go digging deeper (which can cause trouble).
Even in the very first Road & Track write up (Dec. 1991) of the FD, they mention the dip in boost when the system transitions to both turbos spinning. I believe the pattern goes 10-7-10. Your issue seems to be that you go into the dip, but something is preventing the second phase of boost. .
If your turbos have been paralleled (i.e. both spinning all the time, always) there will be more lag in building boost and the boost will fall off more quickly when you back off the gas.
Maybe have a shop "run codes".in any event.
If you still have sequential turbo, your back turbo might not be kicking in, or:
perhaps several solenoids are not working as they should and various gates within the turbo system may be opening at the wrong time.
Such as the waste gate.
In addition to checking codes, have the garage do a "smoke test" to see if you have any significant boost leaks.
Do an eyeball of the large rubber collar on top of the "Y-pipe" . to see if it is damaged or loose.
Are any of the rubber pipes before and after the intercooler buckling under boost?
There may be a blockage in your intake piping before the intercooler.
Is the air filter clean?
Check the several blow-off valves are still working.
All these are fairly easy checks before you go digging deeper (which can cause trouble).
Even in the very first Road & Track write up (Dec. 1991) of the FD, they mention the dip in boost when the system transitions to both turbos spinning. I believe the pattern goes 10-7-10. Your issue seems to be that you go into the dip, but something is preventing the second phase of boost. .
If your turbos have been paralleled (i.e. both spinning all the time, always) there will be more lag in building boost and the boost will fall off more quickly when you back off the gas.
Last edited by Redbul; Nov 9, 2024 at 12:25 PM.
