6th gear rattle
Thread Starter
Racer
Joined: Nov 2014
Posts: 276
Likes: 6
6th gear rattle
Recently I drove the car in 6th gear during a long road trip at cruising speed 70mph and rpm at 1500 and the car make a rattle sound when I gently accelerate above 70mph. But I notice when I shift to 6th gear at 80mph with rpm at 2000 while cruising, no rattle when I accelerate pass 80mph. Is this normal? Do I need to take to a turner for fine adjustment? Much appreciate your time.
Last edited by 5150RN; Jul 15, 2020 at 12:22 PM.
Melting Slicks
Joined: Mar 2018
Posts: 2,502
Likes: 187
From: California
He’s dragging the gears and the clutch at those low rpm. Same results would occur driving 25 in 5th . If you want to clear this up you will need to add a lighter fly and some more ponies to improve low torque pushing abilities. I’m sure lighter drive shafts ect would work there’s prob many ways . Lighten the car . He’s trying to gun accelerate in 6th from 70-80. End result your car isn’t strong enough to make that happen smoothly . Under light load it’s fine . If your constantly getting on it that way your gonna bend some parts in your engine . Shift .
The way your car is your 6th gear isn’t for pulling /passing its for cruising and getting some good mpg .
The way your car is your 6th gear isn’t for pulling /passing its for cruising and getting some good mpg .
Last edited by Speedy007; Jul 15, 2020 at 06:28 PM.
Pro
Joined: Oct 2006
Posts: 515
Likes: 133
I had what sounded like light detonation on my high mileage (about 165k then) MN6 under very similar conditions. Doesn't happen at altitude where I live and normally drive (about 6,000'), but did closer to sea level. Shifting down was the best cure.
Thread Starter
Racer
Joined: Nov 2014
Posts: 276
Likes: 6
He’s dragging the gears and the clutch at those low rpm. Same results would occur driving 25 in 5th . If you want to clear this up you will need to add a lighter fly and some more ponies to improve low torque pushing abilities. I’m sure lighter drive shafts ect would work there’s prob many ways . Lighten the car . He’s trying to gun accelerate in 6th from 70-80. End result your car isn’t strong enough to make that happen smoothly . Under light load it’s fine . If your constantly getting on it that way your gonna bend some parts in your engine . Shift .
The way your car is your 6th gear isn’t for pulling /passing its for cruising and getting some good mpg .
The way your car is your 6th gear isn’t for pulling /passing its for cruising and getting some good mpg .
Last edited by 5150RN; Jul 15, 2020 at 09:28 PM.
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Thread Starter
Racer
Joined: Nov 2014
Posts: 276
Likes: 6
I don't know but it running excellent at 6th gear with rpm below 2000. I'm cruising 70mph on 6th gear with no rattle when I accelerate. SHAWN from Church tuning in Wilmington, CA.
Last edited by 5150RN; Jul 16, 2020 at 06:26 PM.
Melting Slicks
Joined: Nov 2017
Posts: 2,306
Likes: 747
I'd probably be curious what the fix was for the specific issue I brought it in for though...