Remembering Japanese cars from the past

Tag: central circuit

Carina Sightings: Toyota Carina TA63 drag racer

And now for something completely different: a man with a tape-recorder up his nose! a Toyota Carina TA63 drag racer at the Central Circuit:
JDDA West 2013 Toyota Carina TA63
The twin spark single turbo 3T-GTEU has been swapped out in favor of, correct me if I’m wrong, a 2JZ-GTE with a big Trust Greddy T88-34D single turbo.

I have found two videos of this Carina doing runs at the JDDA-West 2013 drag event at the Central Circuit (Taka District, Hyōgo, Japan). The Carina became 7th in its class with 11.106 seconds on the quarter mile. Not the best time of the day and not the fasted on the quarter-mile you have seen before, but it is pretty decent if you think the McLaren MP4-12C is doing the quarter mile in 10.9 seconds.

The first video shows the Carina, its engine and a couple of runs and the second video shows two of those runs.

You can watch the videos below: Continue reading

AE86: Whining diff? posted a video of an AE86 doing Central Circuit in Japan:

The first thing I thought was that the driver of the car really needs a new ring and pinion! (aka crownwheel) It sounds the same as on my old Trueno but then at least four or five times as worse! You can hear the diff whining from about 50 km/h till 140 or 150 km/h, that is if I remember the pitch of the sound correct and presume the owner still got a 4.3 ring and pinion! ;)

The whining diff is a very well known issue of the AE86: its design was never meant for drifting, so if you put too much stress on it the crush sleeve will deform. Only a small deformation on the crush sleeve will cause an imbalance on the ring and pinion and wear down the teeth of the ring much faster than normal. So in case this happened to your hachi stressing the ring will only wear it down more and the whining noise will get worse! To prevent this TRD created a solid spacer which can not deform.

Another possibility for this amount of noise is that the AE86 is driving on the circuit with uniball 4 links. These will return all vibrations of the axle back to the chassis. Correct me if I’m wrong, but with uniballs you would hear much more noise and feedback from the road than this.

Also you may think the noise is coming from a straight cut gearbox. This isn’t the case as then the whining noise would change pitch when shifting up or down. Here the pitch is constant and continues with the same pitch after a gear shift.

So for all those people out there wondering what a whining diff sounds like on an AE86: this is it! If you hear it this much you really need to think about getting a new ring and pinion.

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