Redline in 3.9 V8?

**Scouse** · 23rd January 2009, 08:12 AM

On the D1, the PAS usually lets go before the valves start bouncing. I've seen a few cars come back from a road test with the aux. belt off.

**PhilipA** · 23rd January 2009, 08:37 AM

The lifters in a 3.9 are designed to pump up at about 5500RPM to protect the motor from overrev.

if you are going over that you either are very mechanically unsympathic or have fitted Crane lifters.
Regards Philip A

**V8Landy** · 23rd January 2009, 08:51 AM

I thought that without a redline on the dash you can just hold em flat all day long

**A Commodore cant 4x4** · 23rd January 2009, 09:00 AM

Peppercorn you Pirate!

Thanks for the answer! Ill just treat it like my Commy. 5500rpm redline. Not that I use it much. Still, its handy to know incase some little goober in his doof doof ground scraper thinks a 4x4 cant keep up

**Tank** · 23rd January 2009, 11:36 AM

Originally Posted by Fusion

when the valves start to bounce then back off a little

.

Just a little, mind you! Regards Frank.

**justinc** · 23rd January 2009, 02:31 PM

Originally Posted by V8Landy

I thought that without a redline on the dash you can just hold em flat all day long

JC

**stuee** · 23rd January 2009, 06:54 PM

Originally Posted by PhilipA

The lifters in a 3.9 are designed to pump up at about 5500RPM to protect the motor from overrev.

if you are going over that you either are very mechanically unsympathic or have fitted Crane lifters.
Regards Philip A

Hmm, I've been over that only once. It involved low range drags with a tdv8 cruiser on a dirt road. Needless to say I won but I think that had more to do with his crappy shifting...

Oh and you can hear them bounce

**Disco95** · 23rd January 2009, 07:56 PM

I normaly shift when the exhaust gets too loud

Other than that, I generally try to keep it where the power feels good, too many revs she doesn't feel like she's doing any more.

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