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Everything you would ever want to know about Mazda gearboxes

A library of especially useful topics taken from Tech Talk.

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Kartoon2312
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Re: Everything you would ever want to know about Mazda gearboxes

#281 Post by Kartoon2312 » Sun Sep 15, 2013 7:10 pm

what gearbox would fit in 323 coupe without and mods and can handle 350hp ? was going with S5 but iv been told you have to shortin the shifter housing?? any info would be great



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Re: Everything you would ever want to know about Mazda gearboxes

#282 Post by Rx3hero!!! » Wed Sep 18, 2013 5:54 pm

Hey guys and girls, I'm new on here but I got a lot of parts for a rx3 and I wanna sell some, can u help me by telling me a good price to sell it for, I got a bonnet driver and passenger guard not fibre glass, and I got a brand new savana nose fibre glass, I got original tail lights but needs paint, I got rear vanitons in and out and a driver door, any help will b great thanks



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Re: Everything you would ever want to know about Mazda gearboxes

#283 Post by PROJECT-X605 » Wed Sep 18, 2013 6:04 pm

for fucks sake, are you serious?!



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Re: Everything you would ever want to know about Mazda gearboxes

#284 Post by 18RAP » Wed Sep 18, 2013 9:31 pm

My gearbox doesn't have any of these parts.

I'd be somewhat suspicious of any savanna gearboxes made of fiberglass.



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Re: Everything you would ever want to know about Mazda gearboxes

#285 Post by hsmidy » Sat Oct 19, 2013 7:42 pm

Thought I'd add my two cents to this, I ask a little while back about swapping the tail housing off a s4/5 gearbox onto a s6 gearbox so that I can shorten the shifter and the fact that s4/5 box's are not so common now compared to s6 boxes.

It was mentioned here that you would have to use a s5 tail housing.
This is not the case both s4/5 tail housings will swap over, s5 box has a large balancing weight on the output shaft (this was the reason supposedly why you had to use an s5 tail housing) however the s6 box does not have this weight, hence s4 and s5 will swap over.

and my out come from my shortened shift....156mm further forward....and a better gearbox cross member setup than the s6 box.



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Re: Everything you would ever want to know about Mazda gearboxes

#286 Post by transplant1 » Mon Dec 23, 2013 8:09 pm

Hi Guys ,can someone,

help out i have blown 3rd gear in my S1 with a 13B 6port with S3 turbo box can i use the flywheel,starter and and pressure plate (9" clutch plate ) if i convert to s4 - S6 with shortened shifter assy and correct extention housing plus tailshaft mods .
thanks Cheers Steve



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Re: Everything you would ever want to know about Mazda gearboxes

#287 Post by RX7_BEN » Mon Dec 23, 2013 9:53 pm

nope



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Re: Everything you would ever want to know about Mazda gearboxes

#288 Post by xalss » Tue Dec 24, 2013 7:19 am

YEEEHOOO, I FOUND THAT.
Hello guys. I have Mazda 929 HB with MA engine. This is not stock engine(it had injector before). Someone put this monster there! But I dont like this old engine and I want to change it. My friend send me a photo of his bell on MA engine. Here it is.
Image(sorry for such a big image)
Is this MA engine gearbox bell?

I don't want to change my manual 5sp gearbox, but change engine.

I read that bells for TC,UC, D5, NA, VC, MA, and FE are the same. Is it right?

I figure out(visually) that FE\FE_DOHC F8\F8_DOHC engines are suitable for my MA engine gearbox bell, aren't it?
So plese tell me, whitch engine I should buy to fix it with my current gearbox without a problem.
Thanks a lot.



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Re: Everything you would ever want to know about Mazda gearboxes

#289 Post by bumpstart » Tue Dec 24, 2013 9:10 pm

certain that the MA type bell DOES NOT fit the F series engine and vichy versa

some early MA/ NA /VC boxes are also the older clamshell design so are not compatible to swap the F type bell over
.. later MA DOES use the "M" type 5 spd gearbox like many F engine cars , just the bell is different and so can be exchanged between them if you know what you are doing

did same job recently for my old courier ute, converting what was a good M type MA gearbox with tail and bell so it could be used on the F2 engine


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Re: Everything you would ever want to know about Mazda gearboxes

#290 Post by xalss » Tue Dec 24, 2013 11:18 pm

>last MA and FE
> just the bell is different

First page:
>The front case/bell-housings are interchangeable between all gearboxes.
>The RWD 626 boxes and the later MA-powered 929 boxes are identical to each other.
Also my friend said that he changed MA to FE engine with no modification of the bell
maby I missed something



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Re: Everything you would ever want to know about Mazda gearboxes

#291 Post by bumpstart » Wed Dec 25, 2013 3:45 am

First page:
>The front case/bell-housings are interchangeable between all gearboxes.
yes, nothing has changed here,, all i pointed out is a clam bell doesnt fit on the M type or R type gearboxes.. as stated,, and M bell fits an M box,, and R bell fits an R box .. a clam bell fits a clam box.. etc..
it does NOT say that any R or any M bell fits all and any random engine
.. it says specific bells go on specific engines and bells of the same basic gearbox series can be interchanged between others of the same series gearbox

>The RWD 626 boxes and the later MA-powered 929 boxes are identical to each other.
it is saying an MA gearbox from a RWD 626 is the same as the RWD MA gearbox in a 1980 and 1981 929
( there is no F8, FE, or F2 RWD 626 ! )

it is NOT saying a RWD 626 MA gearbox is the same bell as a 929 FE gearbox

Also my friend said that he changed MA to FE engine with no modification of the bell
well.. since my 1986 f2 powered courier needed a new box that still had a functional 5th gear
i fitted an 1985 MA b2000 gearbox... to do this,, it requires the tail assembly ( different shifter locations )
and the bell

these fit no issues ,, but you need your current box out to do so .. you wont need to swap the tail.. as this box already has the shifter location you need




maby I missed something
you only have to look where the starter goes..or the clutch lever.. .. or look at the basic pattern to see they are vastly different
Image
Image

Image

Uploaded with ImageShack.us

NA/VC/MA bell is bottom pic ,, the F8/FE/F2 bell is top pics.. starter and clutch lever opposite sides

i didnt go through all that effort cause i wanted too.. but because that it what is required ..
Last edited by bumpstart on Wed Dec 25, 2013 10:59 pm, edited 1 time in total.


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Re: Everything you would ever want to know about Mazda gearboxes

#292 Post by xalss » Wed Dec 25, 2013 8:46 pm

Ahh sorry, dont underestand. Im from Russia and cant handle your English.
(yes, on your photos you have two different gearboxes with different starter fixing sides.)
But!
I got that my engine have same geabox layout as FE type engine gearbox.
Take a look:
my gearbox
Image
FE gearbox, source http://basic-engines.co.za/html/mazda_gb_c.html" onclick="window.open(this.href);return false;
Image
Same layout, same place of starter, same holes. I think it fits!
And today I found that nice and modern 1,6 L B6 engine(dohc and sohc) from Mazda -MX5 have the same layout two! The only thing is the size of input shaft. I dont know if it's the same as my gearbox.
Image
Image
But then I read this and forgot about old FE engine at all!
> The 5-speed MX-5 gearboxes are smooth-case type gearboxes.
So my gearbox fits MX-5 right?



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Re: Everything you would ever want to know about Mazda gearboxes

#293 Post by xalss » Fri Dec 27, 2013 12:29 am

bumpstart, yes U was right. I have MA engine and my gearbox doesnt fit.
http://performanceforums.com/forums/sho ... ngine-swap" onclick="window.open(this.href);return false;!
sorry for another forum



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Re: Everything you would ever want to know about Mazda gearboxes

#294 Post by bumpstart » Fri Dec 27, 2013 2:34 pm

all good.. it was worked out in the end
.. seeing your issue being your 929 is now carbed and you are looking at the expensive option of taking it back to efi

and you are looking at 1600cc B6 16 valve DOHC through to 2000 cc 12 valve FE options that can be made to fit easily

i would go as far as suggesting the high revving B6 and BP will be a bit short on TQ for the mass of the car down low .. and you cannot fix this easily in HB as there is no easy diff gearing options

i would also say that going back to EFI fuel pump setup and ECU will never be easy or cheap , even on the FE options

i would suggest that the easiest , cheapest ,, and best low down TQ option avail to you is the commercial ( RWD ) F2 8 valve , carbureted 2200 cc engine from the E van series and B utes

for this ,, you also need the F series bell housing ( and starter ) and swap that onto your existing gearbox
and then fit exhaust ,, and hook up the ( already ? ) electric low pressure carb type fuel system

while a bit mundane on paper ,, these are EXCELLENT engines that are the peak of L4 carburetted engine development
and have a reputation of being very tough, simple.. and a bit better than some higher tech efi offerings of the day

as for the clutch,, all early pre 1982 mazda are almost 1 inch,, 22 spline , same...but avail in 215mm or ( 1982 -85 ) 225mm clutch disk

after 85 the big commercials and rotaries start to become 23 spline, one inch ,, 245 mm disk

but.... you can make a hybrid setup using the ford escort/ mitsu sigma/triton style 23 spline 215mm disks


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Re: Everything you would ever want to know about Mazda gearboxes

#295 Post by xalss » Fri Dec 27, 2013 5:02 pm

bumpstart,
i would go as far as suggesting the high revving B6 and BP will be a bit short on TQ for the mass of the car down low .. and you cannot fix this easily in HB as there is no easy diff gearing options
explane this again, please, can't underestand.
I want to put b6 engin with its own gearbox to my car. Old ma engine and smoothcase gearbox sucks
This guy put b6 engine in old 80s car.
Image
viewtopic.php?f=4&t=39989&start=20" onclick="window.open(this.href);return false;



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