Hi,
Is somebody got a Mazda Factory race gearbox?
I\'m looking at one at this moment!:D
Ian
Tell me all about it never heard of it:wave .............Now.
MFR\'s race gearbox\'s spec:-
(A) Gearing ratio:- 1st=2.350,2nd=1,608,3rd=1.240,4th=1.00,5th=0.88 or 0.839 with roller bearing installing all gears
(B) Tailhousing:- Roller bearing rather than bushing like stock gearbox
(C) Transmission case:- 6.00mm thick,thicker than 4.6 stock
(D) No speedmeter gearing/rev light switch
(E) Suit to high rev BP or PP motor.
(F) 1980\'s box for FB race car
(G) Smooth case( no rib like turbo box) will mate any 12A or 13B engine
first choice is a RX8 box for its fast shifting and cheaper too!! and turbo\'s box!!! cos it\'s too slow to shift( good for turbo,not high rev N/A motor.
Happy now!:Thumbsup!
Regarding your first choice (the RX-8 box), does anybody have any experience with running one in a slightly warmed over FD?
Not that I\'m keen to spend money at the moment but six gears may come in handy at one point...
I was chatting with Steve at Silverstone yesterday morning ( my mate who runs the RX-8 Racing Team ) and this ( RX-8 Box ) did come up in conversation.
I am going to pop in and see him in the morning for a real tech talk. I will keep you posted.
:wave
Quote from: ian duncanMFR\'s race gearbox\'s spec:-
(A) Gearing ratio:- 1st=2.350,2nd=1,608,3rd=1.240,4th=1.00,5th=0.88 or 0.839 with roller bearing installing all gears
(B) Tailhousing:- Roller bearing rather than bushing like stock gearbox
(C) Transmission case:- 6.00mm thick,thicker than 4.6 stock
(D) No speedmeter gearing/rev light switch
(E) Suit to high rev BP or PP motor.
(F) 1980\'s box for FB race car
(G) Smooth case( no rib like turbo box) will mate any 12A or 13B engine
first choice is a RX8 box for its fast shifting and cheaper too!! and turbo\'s box!!! cos it\'s too slow to shift( good for turbo,not high rev N/A motor.
Happy now!:Thumbsup!
So how many of these boxes were made and for what power. etc etc etc.:wave
If standard turbo model, say 230hp and it should be okay to use!
Turbo motor 230hp,210lb/ft
PP motor 280hp,200lb/ft
Only person that I know of is Tim from RXMotor, he using rx8 for FB dragcar
Keep looking John we\'ll come up with something.
Kevin
how many!!,I don\'t know!,
Capacity to hold up to 320HP or little more.
Same type using in Daytona 24Hrs, leman 24hrs etcc..
British team like TWR, I believe that they are using Jack knight\'s gear sets
Have you checked out the Kiwi\'s Kev.??
I\'ve done the USA and Aus...this is doing my head in I can\'t believe the fact that nobody has solved the gearbox problem for RX7\'s running over 500bhp, without going Dog Box. There are loads out there worldwide.............................................Ahhhhhhhhhhhhhhhhhhhhhhhhh. 1 2 3 4 5 6 7 8 9 10.:eek
There are t56 6 speeders used in the US, any good?
You have more than likely seen it but here you go:
http://www.rx7club.com/showthread.php?t=609461&page=1&pp=15&highlight=t56+gearbox
Yeah, lots of talk but nobody seems to have done it..........:wiggle
There is at least one by the look of it:Thumbsup!
http://www.rx7club.com/showthread.php?t=474847
Yeah $7500 in 2005. They are still talking on how to do it today. Strange forum.:xconfused
Quote from: WarthogYeah $7500 in 2005. They are still talking on how to do it today. Strange forum.:xconfused
:rollin yes I see what you mean, but how hard can it be? (no need to answer that)
Quote from: Spartacus:rollin yes I see what you mean, but how hard can it be? (no need to answer that)
Ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.................:bandit
Who kiwi kev?:3Confused
look at UK T5 gearbox( 2 wheel cosworth) ( E-bay)
TII\'s Bell housing to morfy to mate T5 box, simple!:Thumbsup!
How do you know it will work, as in bolt up and clutch & drive shaft & gear shift in the correct place, prop, etc etc as well as take the power. Where is the link to someone who has done it....
You can\'t just post that up Ian without a full explanation.
Kev = Kev York, & Kiwi is ref to the NZ rotary lads.
This problem is world wide and nobody seems to have solved it...
Quote from: Warthogthis is doing my head in I can\'t believe the fact that nobody has solved the gearbox problem for RX7\'s running over 500bhp, without going Dog Box. .:eek
John have a word with //www.quaife.co.uk/ and see if they can sort you out a straight cut box, I know they make an FD cluster or maybe even a complete box but I am not sure if its dog or just straight cut mind you if its straight cut you may as well have a dog box and have fun changing gear.
Also with a dog box the other advantage is that in a stock box you can have bigger gears because you have more room without syncros and bulk rings and things in the way.
Problem is with real horse power helical gears try and force themselves apart.
Have a word with RX Motors Tim and ask him what RX-8 box (5speed or 6) he is running because I understand its coping with the power he has.
Quote from: cliveHave a word with RX Motors Tim and ask him what RX-8 box (5speed or 6) he is running because I understand its coping with the power he has.
Oh this sounds interesting!!!!:yes
I remember PiP has been using T5 box way back early 1990\'s for his Gen2 race car!
Clive is correct about Quaife as it\'s popular gearsets for Rx in USA
here is the transmisson adapter for TII/T5 box,(http://i121.photobucket.com/albums/o229/scot62/TrannyAdapter.jpg)
Hi Ian I\'ve a mate who drives a reasonable HP Cossie and he goes through gearboxes like there going out of fashion says there\'s noway they will take what i want to chuck through it. I\'m looking at going Dog box emails have gone out to three companies now so its wait and see for now I\'ll just chuck second hand boxes in.
Kevin
Cosworth T5/FD clutch diameter =240mm/spline=1"x23teeth
morfy the prop-shaft, use T5\'s gearbox yoke/fd diff yoke
That\'s about it!
Hope its help
Very difficult to explain about the T5 box in this forum
All I am asking
" who got MFR race box"??
Sorry for the hijack Ian there\'s a few of us at the moment got gearbox issues we are trying to work around. The mention of a mazda race gearbox got us all going again.
Kevin