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Quieting Down Rock Hoppers

Posted: Tue Feb 13, 2007 8:15 am
by Mud_Muncher
I have series 3 in my Jimny that are very noisy. Is there any tricks to making them run a bit quieter at highway speeds, I cant here myself think! Thicker oil perhaps?

Thanks and regards,

Harley

Posted: Tue Feb 13, 2007 8:21 am
by lay80n
How noisy is noisy?? Is it just noise, or are the bearings going.

Layto....

Posted: Tue Feb 13, 2007 11:38 am
by Zute
When I put my new gears in, I was amazed how much quieter the box was. I replaced all the bearings , so maybe that's whats needed with yours.

Posted: Tue Feb 13, 2007 12:25 pm
by Squik
Did you have to cut a hole in your floor at all? I ended up putting an extra piece of carpet around the boot-hole and double sealing the boot. Seemed to improve things greatly.

Posted: Tue Feb 13, 2007 2:54 pm
by MART
I have a stage 4 gears fromm BBM and I had to grind case in 4 spots,quiet as a mouse with factory carpet,Cheers Paul.

Posted: Tue Feb 13, 2007 6:37 pm
by suzukiboy
Turn up your stereo. :armsup:

My Vit with rockhoppers is pretty quite just has a whine noise through the top gears.

Posted: Tue Feb 13, 2007 7:53 pm
by lay80n
My S1 had a very slight whine to them. My calmini's also havea very slight whine (though atm the t-case has a noisey bearing :cry: ). I hardly noticed mine, and i have no interior or anything, just bare floor pan. See if you can compare yours to another. You may have a faulty bearing. How old are the gears, were the bearings replaced when you swaped gears. Remember that noise basically = wear. The more noise, the more wear so to speak.

Layto....

Posted: Tue Feb 13, 2007 10:19 pm
by Guy
My first set of series one gears were noisy .. then the were really noisy ... then silent .. :roll: .. Then I was really noisy.. :bad-words:

Posted: Wed Feb 14, 2007 9:00 am
by grimbo
they will make noise due to the way the gears are cut. Nothing much can be done to make them quieter, But you can make your cab quieter by using sound insulation products on the floor, firewall and doors to cut down on the noise entering the cab

Posted: Wed Feb 14, 2007 9:23 am
by Mud_Muncher
Thanks all for your advice. I bought the car with the gears already in so I have nothing to compare it with. I have gone from a 3inch BL to a 1 inch, so the box is closer to the floor now so very noisy.

Then again it was quiet compared to my loose fan rattling and then the belt slipping off on the way to work :bad-words: . Good thing the boss doesnt turn up till 10-30 plenty time to fix in the company car park :cool: .