4G63 wideblock + RX7 series 4 gearbox

avandull · Post by **avandull** » Fri Mar 04, 2011 2:28 pm

And so it begins.

Rad found me the correct Bellhousing

Direct Clutch Services found me a gearbox

The Starion gearbox, compared with the RX7 gearbox

Off with the RX7 Bellhousing.

On with the B2600 bell housing

Stay tuned for the next installment

OLD FART · Post by **OLD FART** » Fri Mar 04, 2011 2:40 pm

Will need to shorten the extension housing to get the shifter in the same position .
Looking forward to your feedback on say speeds in gears per 1000rpms compared to the Staz box and shift feel/quality as it is supposed to be way better and smoother
PS for those who don't know the imput shaft extends within a mm or so past the bell as the KM132 :D

JA83 · Post by **JA83** » Fri Mar 04, 2011 3:08 pm

if you need anything machining mate let me know.. dad has a lathe and mill at home. Also what are you doing with the old box?

Mick · Post by **Mick** » Fri Mar 04, 2011 6:23 pm

nice al let me know if you want a hand ay

enthuzed · Post by **enthuzed** » Fri Mar 04, 2011 8:39 pm

Rad, if you've had no grief from your box why are you going to swap it?
I noticed the box used for the comparison is not the one in your car with the tuff pan on it.
Or are you getting prepared for that fateful day?

avandull · Post by **avandull** » Fri Mar 04, 2011 9:38 pm

Mick,JA83 Thanks for the offers of help, I will sing out.
Rad, I will make some speed measurements

I have had a run of broken gearboxes, That it another broken one.

Next I have to get a B2600 slave cylinder, move the shifter, make a cross-member and make a new tail shaft.

OLD FART · Post by **OLD FART** » Sat Mar 05, 2011 5:41 am

enthuzed wrote:Rad, if you've had no grief from your box why are you going to swap it?
I noticed the box used for the comparison is not the one in your car with the tuff pan on it.
Or are you getting prepared for that fateful day?

I want to be prepared for what most seem to think is inevetable seeing my tc is built for torque and is on a very safe tune and when 320+ HP & 585 nm ATW starts to feel slow a new tune , a 63 turbine and boost increase will be on the cards :D
PS have had the bell for some time and they are now like hens teeth or rocking horse poo. Allan em'd all over the country and couldn't find one and my supplier has my permanent order for any that he comes across

kushman · Post by **kushman** » Sat Mar 05, 2011 6:56 pm

hey could some one just confirm that the bell housing is from a late 88-92 ish? mazda b2600 4cylinder 2.6 rwd? i take it the 4wd type wont fit?

MainstreaM · Post by **MainstreaM** » Sat Mar 05, 2011 10:48 pm

kushman wrote:hey could some one just confirm that the bell housing is from a late 88-92 ish? mazda b2600 4cylinder 2.6 rwd? i take it the 4wd type wont fit?

Here in the states, years were 87-88 only with carburetor. 89 and above used a Mazda designed fuel injected 2.6 liter engine. The Mitsu G54B used in the trucks was more commonly found in the 4wd due to the higher torque than Mazda's 2.0 used in 2wd. Luckily Mazda knew they had a bullet proof trans and used the same TII R series transmission in it's 4WD trucks with different gearing of course.

So what you should look for:
87-88 +/- year truck with Mitsu G54B engine (carby)

Kane

kushman · Post by **kushman** » Sun Mar 06, 2011 5:42 am

thanks for the reply.. so the 4wd has the same bell housing?

i have also seen that the ford coriour in NZ has the same 4g54 in both 2 and 4 wheel drive , mid 80s to mid 90s . be keen to know what bell housings can be used for this conversion

redzone · Post by **redzone** » Sun Mar 06, 2011 11:25 am

Hey Alan, did u get a clutch fork with the B2600 bell? i have a brand new one here if needed. Modding the shifter is pretty easy, i bet there are easy how to's on the ausrotary site as they do it when fitting this box to early mazda's.

avandull · Post by **avandull** » Sun Mar 06, 2011 8:47 pm

I got the clutch fork with the RX7 box. I believe they are the same as the B2600 one. I am still debating whether to move the shifter, I think 3 inches further back would be good in conjunction with the different angle of the of the RX7 shifter.

This slave cylinder is the wrong one. The bleeder is on the wrong side.

This is the correct one, with part number.

This is the B2600 slave cylinder(the new one) compared to the RX7 slave cylinder.

redzone · Post by **redzone** » Mon Mar 07, 2011 11:15 am

And the best part is, the starion line goes straight into it :)

enthuzed · Post by **enthuzed** » Mon Mar 07, 2011 12:09 pm

What what year/designation of Australian models would the bellhousing and clutch fork and slave come from?
I'd imagine Ford Courier stuff would probably work too.

OLD FART · Post by **OLD FART** » Mon Mar 07, 2011 3:01 pm

enthuzed wrote:What what year/designation of Australian models would the bellhousing and clutch fork and slave come from?
I'd imagine Ford Courier stuff would probably work too.

Only if it had a 4g54 motor

Austarion

4G63 wideblock + RX7 series 4 gearbox

4G63 wideblock + RX7 series 4 gearbox

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