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Metal rattle at 2k rpm
Posted: Fri Mar 30, 2012 9:22 pm
by ddoubledanny
As above on my 4th gen vtec 4ws makes a very loud rattle like a bit of tin is in my exhaust. Checked all exhaust brackets removed all heat shields looked on the net couldn't find anything. Weird thing is its always
At 2k rpm or just above any one experienced this b4 let us know been looking and revving all day and
Still can't find where the noise is coming from
Posted: Fri Mar 30, 2012 9:23 pm
by bristol_bb4
do you have a standard or stainless exhaust?
Posted: Fri Mar 30, 2012 9:24 pm
by jozefsan
lift car, start car , keep it on 2000 and listen where is coming from
also is good to have thick heat-prove gloves so you can check exhaust, shields and parts on car
btw first thing what i will check is downpipe bracket to engine
Posted: Fri Mar 30, 2012 9:26 pm
by ddoubledanny
The exhaust is stainless right through .
Would try this but don't have a lift/ramp might have to take to garage
Posted: Fri Mar 30, 2012 9:30 pm
by jjmartin349571
Might be a heatshield. Could you borrow some axle stands to lift it? I had a similar problem in my golf, was getting a horrible sound due to resonance at 2,400 RPM. I found a long metal stick was handy, as you can hold it against parts to feel for vibrations - I had to do this to determine which of two metal parts that were very close together was making the noise (impossible by ear!!)
Posted: Fri Mar 30, 2012 9:34 pm
by Ammo
Do you have an "ebay" manifold and downpipe?
Posted: Fri Mar 30, 2012 9:35 pm
by bristol_bb4
the most likely places the rattle is coming from -
manifold heat shield
cat heat shield
heat shield just above the backbox-midpipe join as it does hang pretty close to the exhaust itsself!
Posted: Fri Mar 30, 2012 9:35 pm
by bristol_bb4
Ammo wrote:Do you have an "ebay" manifold and downpipe?
+1
i had one fitted and initially had an annoying rattle, it was the bracket that attatched the downpipe to the back of the engine, did away with the bracket and the rattle went
Posted: Fri Mar 30, 2012 9:41 pm
by Ammo
bristol_bb4 wrote:Ammo wrote:Do you have an "ebay" manifold and downpipe?
+1
i had one fitted and initially had an annoying rattle, it was the bracket that attatched the downpipe to the back of the engine, did away with the bracket and the rattle went
The welds for the bracket are crap and shear off quickly, Before I put on on my last lude i had it rewelded, and the original weld was full of air, and the one on my car now has been rewelded cos it failed
Posted: Fri Mar 30, 2012 9:48 pm
by ddoubledanny
Japspeed mani and down pipe bought from eBay. Can't be cat or heat shields as there ain't any lol