Grind in 4th and Top

Engines, Transmissions & Final Drive questions and answers

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davamb
Fast Driver
Posts: 230
Joined: Sun Jan 22, 2006 9:00 am
Vehicle: NA6
Location: Close to PI

Grind in 4th and Top

Postby davamb » Thu Aug 23, 2007 7:14 pm

If I lug it a bit in 4th and top I get a bit of a grinding noise that sounds like it's coming from the gearbox. I don't mean really planting the throttle, just a bit of load at 3 grand or lower. Thought it might be pinging, but it's not exactly the right noise and had ignition settings checked and tried higher octane fuels with no difference.
I know, I know, just keep the revs up, yeah, yeah, but sometimes you're coming off the throttle in top and in no hurry to get back up to speed.
Any ideas? Don't have a gearbox schematic, so I dunno what motion shafts etc are common for 4th and 5th.
Cheers, Dave, 1990 NA6
Via est vita.

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