I really need to see some local cars to compare mine to. I've never even ridden in another FD and I just bought one...

Anyway, when I give the car more than 30% throttle, the regular engine growl is accompanied by a loud "baseball card in the bicycle wheel" clicking sound.

I'm running stock twins, ported WG, Gotham street port. greddy IC, no emissions. 305whp at 13psi.(although my profec-b is at 10psi until I learn more about these cars.)

Any input appreciated. Thanks!

 

If I'm imagining the sound you're describing correctly, the car should not be like that.

 

No, that is not at all normal. You should hear the growl of the exhaust and the turbine-like whine of the turbos.
And that is pretty much it.

 

exhaust leak?

 

can you record a short clip w/ a digi camera or something and post it on youtube? it doesn't sound right from how you're describing...

 

I have the same noise I think. My mechanic said it is normal and he showed me the part that makes this noise. It is some flap inside the exhaust manifold.

 

if you "flap" inside your exhaust manifold is making a noise like that you probably would have some boost problems....

 

What kind of 7 do you have?

Only the purr of the engine and the spooling should be heard... unless there's something i dont know about.

 

That i dont think is normal.

 

I have a 93 FD. It only makes the sound on deceleration.

 

I'm local(round rock), bring it by and I'll take a look at it for you.

 

I've only been in 4 FD's in my life and i know that is nothing compared to others, but none have made that noise.

Plus the "exhaust manifold" is the turbo mani so maybe there is something wrong with it?

 

Check to make sure none of your spark plugs have worked their way loose and are letting the combusted gas escape around it. That might cause that sort of noise.

 

YGPM.

Thanks guys. I want to get this sorted. If it isn't some strange exhaust leak issue, I wonder if it could be the larger turbo?

 

There is a slight clicking sound at idle especially if you have 3mm seals. But you should be hearing the turbo and the exhaust with any type of acceleration.

 

Well, I DO hear the exhaust and spooling turbos clearly. But I get an additional loud clicking that seems to be related to load. From mid to high load.

If I were to accelerate to redline slowly and not give it much gas, it would never make the noise.

 

It's an exhaust leak probably. Mine did it for a while. It comes from the passenger foot rest area correct? Check the downpipe to turbo and downpipe to cat converter gaskets for leakage.

 

Another thing to check:
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/fixed-my-rattle-noise-here-what-169138/

 

could it be the aftermarkt boost solnoid clicking? mine clicks when im on boost. but its an apexi not a greddy

 

What do you mean by larger turbo? is it aftermarket?

I'll have to agree its most likely an exhaust leak.

 

Do you have a boost gauge? My Greddy gauge would make that noise (it had a leak) under boost.

 

my car has done that straight from pettit racing, it has a large streetport... and i asked them.. they said its fine, absolutely nothing wrong... and so far, everytime i replace a part/fix something its still there.

 

I don't think its an exhaust leak. I'm familiar enough with those. The sound originates around mid-engine, so it could be near the turbos or anywhere along the long block really.

CArx7 rode in it and he thought it could be the wastegates...

It is definitely boost related. The sound starts quietly at 4 psi and gets louder with boost, it also increases in frequency with RPMS. So it could be some sort of resonance from the wastegates.

If your car did it straight from the shop then I'm comfortable enough to not worry about it, lol..

Thanks for all the input guys. Now I'm gonna worry about something else, like the slipping clutch.

 

Are you running stock twins? seq or non?

also, why would running 3mm apex seals lead to an audible clicking noise

 

stock sequentials