I cant remember if Simon machined the 71 series box for
the spigot bush to fit properly but Im only thinking of
the 71 box as its common everywhere.

I would only use the 71 series hydraulic setup and I dont
understand why you would work on an 60 series hydro setup when they are also rare now.

The J15 engined 1500 ute @ wreckers had a floor shifting
bluebird box instead of the column shift 4 speed using
this method of adapter plate. Starter seemed to be bluey.
Flywheel could have been custom to suit bluey starter?.

The CA must be smaller and better suited to the A series.

A series pic followed by L series backing plate

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  Engineplate L series.jpg (27.48 KB)

Yes D, Simon machined down the spigot diameter. That is why the toyota conversion is so popular as the older ones all use the 10mm spigot that the Datsun A series uses. The L series has a 14mm that won't fit in the back of the crank. Well it can but you will have no spigot and a bit of grindy action going on. On other conversions where you have a much larger standard spigot diameter then you open up conversion choices, and even in cases where there is a heavy weak gearbox like the aussie 4 speed then a celica steel case is a good option. That same box would be a poor choice for a 1200 as it is so heavy, like around nearly 50kg. Tunnel restrictions also play a big part. And for the standard 1000-1200 tunnel the L series with it's standard bell housing will foul everywhere. Then there's the hydraulics to consider.

And D, you forget where I work. When I'm talking Hydraulic and remaking something, I'm talking about this.




Adapting a slave right off the smout as the one I got with my 60 series is broken.One of these is around $600 odd retail. I'm not sure what it'll cost me yet but we'll see what I can do. Most factory units cost as much or more but with this one you can get spacers to set the depth of it and replace the bearing easily and change the pattern of the bell mouth to suit your clutch application.

Not once did I forget where you work just trying to make sense of the limited options and bringing out a much needed continued discussion to clear the air.

It seems that if the hydro setup you are working on is for "your" 60 series box and it wont help for a common solution for the masses as we can state the 60 series are not options for most of us anymore.

Im more inclined to fit a CA bellhoused 71 series as although we arrive to the same issues with size, all toyota boxes are rare, sought after and first gears are mainly useless.

I had a hybrid W58/57/59 to make a strong Toyota Stumpy box with good gearing and its weight was 35kg yet took me a long time to source as everyone wants them, yet was the only choice I had for the rotary conversion at the time as all mazda boxes are super long not unlike normal 71 series boxes.

One thing I have noticed from massaging a 1000 tunnel with a smooth headed heavy hammer was that it does stretch out enough to fit almost any of the boxes discussed bar the T5 if done right, you can split the metal in some areas but can be migged and plated again.

I think its worth to aim for the 71 series boxes as there arent many options left nowdays at wrecking yards. Machining the input shaft would be worthwhile as most would likely need a rebuild anyway by now.

I repeat I think the smooth case CA bellhousing is much smaller than the L series and will likely be more suitable for an A powered model. Options are limited.

Don would you know if the 2.9 firt gear is possible to fit B and C series 71 boxes and available? They are supposedly from all Z boxes in the 240/260 range.

Forgot to mention the WC T5 gearbox w/ close ratio gearset is a proven setup in club racing, lotus 7 replicas and even big power conversions. I have not heard of any mishaps with the gearsets from the Locost (lotus 7) peeps and owners they love them. Also some of the owners that run the stock wc T5 box in ford crossflow 250 turbo engines and later ea turbo setups, abuse the crap out of them yet swear by these cheap commonly available boxes.

Your company might make the best boxes for racing but for the everyday Joe the T5 is still hard to beat.

Im open to use any box though as long as its affordable or
50% more expensive than a dellows setup which has terrible stock factory toyota gearing anyway.

Here is an A series BP followed by
FWD ca18de backing plate last

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  ca18de backing plate 2.jpg (14.90 KB)

D nI have an A and a L plate sitting in the shed, wouldn't a more comparable picture be of one overlayed on the other? or that then spray paint over the holes to outline where they are

absolutely, will try and get a ca plate soon to overlay also

i hope this all goes well for you D, A15 + 5 speed is the goods :)

Got a good running A15 with dogleg in ute (wont sep) 3k askn price, in melb.

Nick someone might want it should put an ad up elsewhere.
Personally dont like dogleg prefer H pattern. Also the
60 series boxes parts are very rare to impossible to source.

With 2k I can build a 1773cc a15 using e15et rods
on modded crank for 40mm crankpins offset stroke
to 86mm and use 81mm stock hayabusa pistons with
25mm comp height for good compression.

A stock busa piston 99-07 has a compression distance from center of pin to top of piston of .984" and the 2008-2009 pistons have a .945" distance..

18mm-20mm pin size.

D;; have you done this combo (81mm bore x 85 stroke)and running or on paper only.