D,
Just because ur t50 was shifting smooth doesn't mean they all do.Many many threads on the corolla forums of people complaining about their t50s crunching and breaking.Most will prob be as a result of the driver and maintenance.
Shifting smoothly can come down to very simple things i.e the type of gearbox fluid, clutch adjustment,condition of gearbox etc etc
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I mentioned your recent questions on previous post, even the stock T50 is a better box than any A series 5 speed close ratio or not for its shifting ability which is silk not clunky even after 200,000kms. You can even shift a t50 into gear without using your clutch they are that good.
D,once again no offence intended,
Have you ever driven or owned a vehicle with a 56A 5 speed or a 56A Nismo gearbox??
Have you driven any of those gearboxes past 200,000km to know they get clunky?
Alot of gearboxes can be changed gears without clutch..i dont see your point there..That has nothing to do with the gearbox being good or better.That depends on the skill and experience of the driver.How long do you think it will last doing that?
Many wouldn't risk it as it Just takes one misjudgment of the gearbox and engine speeds and you wreck your gearbox.
You can shift your T50 without using the clutch ....id like to see you attempt that in a race track and see how long it will last.Once again gearboxes break due to such habits...
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People like Billzilla has a good write up on them if you are not convinced
This is straight off his webpage! The race gearbox he is referring to and comparing to a stock t50 is a k50 close ratio direct fifth gearbox.As you can see from that statement, he prefers a closer ratio for racing.Maybe not for street.
You should also see read on his webpage the effort he went through just to achieve a direct fifth gear.Have look at his gear pattern!
http://www.billzilla.org/drivetrn.htmQuote:
Gearboxes
Your car has to operate over a wide range of speeds, and the engine can not alter it's revs by enough to cater for that range of speeds, so the engine's torque must be passed through two stages to get it to the point where we can use it practically.
The first stage is the gearbox. We need for the car to be able to move off from a standing start, and then accelerate to (ultimately) a high speed. To do this, the gearbox has a set of gears in it that we can engage to vary the output revs compared to the input revs. Ok, that's simple stuff. How can we make our car go better by fiddling with the gearbox then?
You have no doubt noticed that whenever you change up gears, the revs drop. An example might be going from 3rd gear to 4th gear in a Toyota T-50 gearbox at 6,000rpm will make the revs drop to about 4,300rpm. Whilst this is fine for an unmodified road engine, in a performance engine this may be an unacceptable rev drop. In the gearbox in my racing car, doing exactly the same sort of shift up would drop the revs to only about 5,200rpm. This has several effects -
- The revs are kept higher, so there is less chance of 'falling out of the useful power band'.
- There's less of a rev drop, so the engine doesn't have to slow down as much when changing gears.
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The yahoo auction kit sold for 177,000 yen still a good price if you consider its a bolt on kit
Thats minimum 2500aud to land in Oz by the time you pay the import duty taxes,commission to agent and shipping fees.Add an aftermarket gearset (if you can find one) and the price comes to over 6000 aud landed and fitted....
Mattndew76,
not arguing mate.All in good datto spirit
Always good to share information.I red your thread.Very good build.Seeing you will be running a very good diff,supercharger and wide tyres due to flaring,id recommend you read the toyota and corolla forums about the t50 boxes.The gearbox becomes the weakest link if your running a very good diff and strong axles.Not to mention if you use very sticky wide tires for events like drag racing etc
Have a read on corolla/toyota forums,Might slightly convince you to go straight to the toyota W series esp if supercharging.
Funny how the corolla forums don't recommend the T50 behind supercharged or very modified engines.Its NOT regarded as a "strong" gearbox on their forums.And those who use them with modified engines do stress the point that how you drive it will make it or break it.Once again,depending on the driver.
Also as a side note ive noticed many mention on the toyota forums is that The highest output engine from factory behind the T50 gearboxes was 124bhp.
cheers
Transfer
