if you dont know what you want.... how is anyone else going to know?

if you want less noise go the 6 speed, simple

The gears are bigger/stronger than a stock 5 speed, not sure they'd be stonger than straight cut ppg's though..

I vote 6 speed.

Stronger than 5 speed PPG straight cuts IMHO, Double synchros on all gears and a third synchro on 2nd gear, Front LSD, stock 6 speed shifter has a much shorter throw.

Very nice box to drive around town, easy shift feel when cruising and lickety split snappy gear changes when you're really into it.

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RS Liberty - Because WRX's are only good for parts...

factory helical cut gears stronger than aftermarket straight cut gears you say?

Common knowledge that straight cut gear design is stronger than helical design. Whether the 6 speed gears are thicker than the ppg's may determine which is stonger also.

Did you include labour in your calculations? It's not a massive job to swap them, but factor in labour as well (Note: It's not cheap).

I say keep what you have if it does the job.

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TD06 - Oink.

Learn gear design Brett

Helical gears are stronger as there are more teeth in mesh at one time (i.e. the load is spread over a few teeth).

Differences come in manufacturing tolerances, tooth strengthening (cryo), materials used, gear thickness.

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[COLOR="Gray"]550Nm off a 2L... Just wish it was in the dak dak...[/COLOR]

Yeah all things being equal aftermarket straight cuts would be stronger. But the OEM 6 speed gears are much bigger than 5 speed straight cuts. Theres a reason the box weighs a good 35kg odd more than a 5 speed.

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RS Liberty - Because WRX's are only good for parts...

6 speed heavier than straight cuts?

Different gearing? Which would be 'faster' ?

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you mirin?

Also, is the 6 speed box a DCCD box?

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you mirin?

6 speed is about 45kg heavier from memory. Down the drags it is slower because of the one extra shift in the last 100m. Around town it's good because you can leave it in 3rd and power out of 90 degree turns. On a short sprint track it will enable you to keep the engine higher within the power/torque band but you'll also spend more time with only one hand on the wheel as you are trying to settle the car into and out of corners.

In MY05+ models it was from factory

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No more GC8, sad face.
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