Strength Of R33 Gearboxes 5th Gear

[turbo87]

As the title says interested to know how 5th gear in an r33 holds up to boost, i was under the imprssion that its not supported and should be used for cruising only?

[NateR31]

well, what else would you use 5th gear for?

[ferni]

I've used 5th gear plenty while on full boost.... Philip island your definatly need 5th gear or you'd be bouncing of the limiter all the way down the straight.

[Guest 40th-edition]

just dont try and go up a hill at 2000rpm in 5th... going 60

[turbo87]

ferni when you say you've used 5th at full boost plenty of times, how much power were you putting through it? And has the gearbox lasted ie no vibrations

[MANWHORE]

How mcuh power does your car have?

5th is just another gear. obviously you're not going to use it at 20km/hr. you won't use 4th or 3rd either at that speed. that doesn't mean that the box isn't strong.

This is what I do when driving normally:

1st 0km/h

2nd never use below 20

3rd never use below 40

4th never use below 60

5th never use below 80.

It has worked for me. Trying to use these gears at anylower speed just loads the engine right up and i can hear the bearings straining.

[turbo87]

My car has 480 rwhp.

I have heard that VL turbo gearboxes (very similar to r33 gearboxes) have weak 5th gears and when they have any sort of power put through them something fails and they become noisy and the shifter vibrates when in 5th.

I was just wondering if anyone could shed any light on this?

[MANWHORE]

nope. all gears are the same strength.

just use it.

The only gear that people have trouble with, and you'd have trouble doing this in any car, including a supra box, is when drag racing, flatshifting and hamfisting the stick into third. This only seems to be a problem on the gtrs though, most likely because of the awd and big power.

[FATGTS-R]

Not just GTRs. When power is elevated more often than not first and second gears are subject to some wheelspin.

From third onwards when full traction is available the drivetrain has to deal with the full brunt of the torque being delivered.

In theory the clutch should be the fuse in the driveline and never be rated higher than anything behind it. But in practise most people have no problems putting in clutches rated higher than the driveline they are designed to protect hence gearbox, tailshaft, diff,axle breakages.

[MANWHORE]

From what others have said, it is the hamfisting of third when dragging.

You're trying to shift as mcuh as possible and slam it into third at near wot. Apparently it is this mashing of third that kills it.

Just shifting easily into third then planting it, even with moderate power hasn't really killed any boxes on this forum to my knowledge (rb20 boxes excluded because they're like a twig).