grinding noise going over speed humps

[skunks.monks]

Ok about 4 months ago I got my power steering rack and pump changed to a new rack and pump, and since then going over speed humps the front of the car grinds somewhere when going over it, i have been under the car and cannot see anything out of the ordinary, nothing seems to have grind marks on it, and nothing seems to be hanging low...

The back of the car is about 2.5" lower then the front (front is on stock springs) The shockers were replaced in November last year and the rear ones not to long ago either..

Any idea what this could be?

[pow3rslave]

my cats/y piece grind on some speed humps, but usually only on the extreme metal speedhumps

[skunks.monks]

it never used to do it before, and the front is still stock height with stock exhaust... so i dont understand why it started??

[pow3rslave]

yeah sounds weird, zorst mounts could be dead, springs could have sagged.

[skunks.monks]

the front is sitting pretty high still so i dunno, will check out the exhaust mounts

[06vzcalais]

consider yoursely lucky bro no scratch marks underneath ive had mine lowered 2 weeks ago no matter how i tackle speed bumps or driveways it scrapes in the rear and as old mate said on the Y piece the front of the car is usually prety sweet they tend to drag the ass a fair bit maybe you just havent hit anything hard enough to scratch or dint it yet

[skunks.monks]

yeh well if it doesnt rain tomorrow might go under the car and have a look, as it grinded pretty hard today!
im hopin its just the exhaust mounts that are ****ed, should be easy fixed...
just dont wanna find anything completly screwed under there..

[maldotcom2]

Just be glad you didn't come over a big speed hump and land the car on your exhaust headers.

[ghog1726]

id say check ur muffler just before the rear diff - id also say if u have the rear dropped 2.5 without an adjustable panhard then u have a myriad of things that could be scraping - my first guess with any commodore is the middle muffler - its the lowest point, Then the Y Pipe, Then the Fuel tank

[skunks.monks]

im not really mechanical minded, so what is a panhard?

[pjdm1980]

there's a basic pic of it

[skunks.monks]

and its used for?

[VZ SV6]

Mine gets the scraping noise but its only the hard plastic mud flaps behind the front tyres. Just another thing to check

[skunks.monks]

thanks ill check it out

[skunks.monks]

had a look under my car for a good 20 mins and could not find anything with any marks on it..
so still no idea what the noise is

[jacksh1t]

Australians are so compliant and docile. Its no wonder Big Brother government just gets away with over regulation to the point where Victoria is now a police state. If you dont like speed humps why just accept them without opposition. I now press my hooter long and hard every time I drive over a speed bump. Its my form of demonstration against the latest draconian imposition.

An example of government logic. City of Yarra tells me they have speed humps to discourage use of local roads by non residents, yet Vic roads wont let traffic turn right from Johnston st into Hoddle street as the main feed onto the eastern freeway, therby forcing traffic down Johnston street and into the side streets (and over all the annoying speed humps).

[PaRaDoX]

Ok about 4 months ago I got my power steering rack and pump changed to a new rack and pump, and since then going over speed humps the front of the car grinds somewhere when going over it, i have been under the car and cannot see anything out of the ordinary, nothing seems to have grind marks on it, and nothing seems to be hanging low...

The back of the car is about 2.5" lower then the front (front is on stock springs) The shockers were replaced in November last year and the rear ones not to long ago either..

Any idea what this could be?

muzza spec cares are supposed to grind...

just because the front is on stock springs the actual ride height at the front will be altered, i bet its the exhaust scraping.

[savage1987]

Australians are so compliant and docile. Its no wonder Big Brother government just gets away with over regulation to the point where Victoria is now a police state. If you dont like speed humps why just accept them without opposition. I now press my hooter long and hard every time I drive over a speed bump. Its my form of demonstration against the latest draconian imposition.

^lol...

weirdo. Or you could just suck it up, like the rest of the world. Stop being such a bitch, scraping on objects is just part of having a low car. Deal with it.