Hey all, I am still having a crappy vibration with my car, but noticed something odd. When I first start the car after it has been sitting for a while (it has to get completely cold), and I start the car is smooth as glass for about 10-30 seconds (haven't really timed it). But as the car gets warmer the vibration gets worse. This vibration happens wheather the clutch pedal is pushed down or not. It seems to get worse with RPM (only have gone to 4k) but not much, when under load (like leaving going up the hill on my street) the vibration seems stronger, but not faster) And it is bad enough that when standing outside of my car you can see the steering wheel vibrating, looking some what like a guitar string.

Specs on car, fairly fresh rebuild, put under 100 miles on it so far, but I have let it run quite a bit. S4 NA, mazdatrix competition motor mounts, rebuilt trans, new clutch and p-plate, light aluminum flywheel.

 

did you maintain the "built-in" characteristics of the oem flywheel counterweight when you installed the alum flywheel? those stiff comp motor mounts probably aren't helping you too much, either

 

how about a mount ,, like a tranny or engine mount ,, all tight and in one peice???

 

how about a mount ,, like a tranny or engine mount ,, all tight and in one peice???

 

The tranny seems really tight, and I don't think its a mount, because for the first 20 seconds after start up it is very smooth.

 

no one else has any ideas?

 

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