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Thread: rx8 gearbox?

  1. #881
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    Re: rx8 gearbox?

    I wonder if anyone has rough dimensions of an RX8 'box?

    I figure I should make sure that it will fit in the tunnel before I buy one.

    cheers.

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    Re: rx8 gearbox?

    After more digging I found this:


    Length of bell housing to first split - 270
    Length of bell housing to second split - 465
    Length from bell housing frint to shifter - 740
    Total length - 850
    Width just after slave cylinder - approx 280-300
    Width at mid section - 220
    Height at mid section - 240, 100 above output shaft centreline

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    Re: rx8 gearbox?

    How many guys here are interested in Essex V6 plates?

    Pipe up if you are as I would like to move forward with my project and I need to persuade freddy686868 to make up some plates

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    Re: rx8 gearbox?

    Quote Originally Posted by zetecmk1 View Post
    It would be good if there was a way to retain a Speedo that will drive the mileometer , so as to monitor the miles covered due to restricted mileage on insurance.
    ive looked and there is a solution that the Americans use you can covert the electronic speedo to cable drive in old with a box they developed its alot of money though nearly 250 quid shipped from the states but comes with the ford type speedo drive. so just link the wires stright up to the box and it dose the rest
    take a look here

    http://www.dakotadigital.com/index.c...rod/prd886.htm
    At least we stole the show...

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    rx8 gearbox?

    [QUOTE=Ianbavs;3063256]Rx8 6speed boxes don't have any type of speedo drive electronic or geared :-) speedo drive is from abs sensor
    I've used gps speedo instead if that info is any use :-)



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    Re: rx8 gearbox?

    Just bought one off ebay. Cheap jobby from Hong kong but fingers crossed!
    http://www.ebay.co.uk/itm/1723790625...%3AMEBIDX%3AIT

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    Re: rx8 gearbox?

    What's the most power /torque anyone's put through this box to date ? Thinking of one behind 1.6 ecoboost in mk2

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    rx8 gearbox?

    I think 220 is what Freddy used rallying n racing seems to hold up fine :-) mines behind a 250hp cosy but not really been mad with it yet :-)


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    Re: rx8 gearbox?

    Same box is behind the s15 200sx, probably the highest power/torque in OEM form. Others are rx8, mk3 mx5, is200 and brz/gt86.
    1968 Ford Anglia 1.7 Puma engine/Escort front/5 Link rear/RX8 box
    http://www.Anglia1968.weebly.com

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    Re: rx8 gearbox?

    Quote Originally Posted by Lmr025 View Post
    What's the most power /torque anyone's put through this box to date ? Thinking of one behind 1.6 ecoboost in mk2
    i'm putting 220bhp with a nice flat torque curve and that is around 200ft/lbs most of the time and 8,200rpm. i run 235 slicks and i am always flat out as it is a rally car and track car. For once the clutch has worn out beofore the gearbox broke (my old tran x type 9 was refreshed every event as something was always breaking.)

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    Re: rx8 gearbox?

    Quote Originally Posted by Lmr025 View Post
    What's the most power /torque anyone's put through this box to date ? Thinking of one behind 1.6 ecoboost in mk2
    i'm putting 220bhp with a nice flat torque curve and that is around 200ft/lbs most of the time and 8,200rpm. i run 235 slicks and i am always flat out as it is a rally car and track car. For once the clutch has worn out beofore the gearbox broke (my old tran x type 9 was refreshed every event as something was always breaking.)

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    Re: rx8 gearbox?

    I have developed a conversion kit for the 6 speed gearbox that keeps the cable clutch in the original type 9/4 speed position when using the RX8 box with A pinto, zetec, I4 or crossflow engine. The kit will allow you to use the original pedal box and clutch cable. The kit contains and adaptor plate to bolt the engine to the gearbox, a new clutch fork, the clutch fork bracket and fitting instructions.

    The complete kit is £150

    If you would like any more info my number is 07960026726. I have these kits available ready to go.







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    Re: rx8 gearbox?

    Price is £165 not £150

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    Re: rx8 gearbox?

    I want to run an Essex in mine Lee - can those clutch forks still be used? If so, how much for one of your kits without a plate?

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    rx8 gearbox?

    What sort of gearbox mount are you using? Any pics?


    Sent from my iPhone using Tapatalk

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    Re: rx8 gearbox?

    I have made my own mount for the box which picks up at the rear. The clutch fork and bracket is £65 posted.


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    Re: rx8 gearbox?

    Kenworth- they can still be used but if you already have a plate you would need to modify it by welding a lug to the side of it with a hole in to hold the cable.

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    Re: rx8 gearbox?

    Lee, I am interested in your arm/bracket, I already have one of Freddy' adaptors and have tried to adapt it for cable which I think the cable is too long and flexes. Please can you let me know the depth of your flywheel and clutch (to the fingers) so I can see if it will work with my zetec se clutch. Also does it use the rx8 or the ford release bearing and do you have a template for the cut out?

    Thanks
    1968 Ford Anglia 1.7 Puma engine/Escort front/5 Link rear/RX8 box
    http://www.Anglia1968.weebly.com

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    Re: rx8 gearbox?

    I don't have the set up on an engine to measure but the set up should work with a variety of different clutches and flywheels due to the adjustment. The rx8 bearing is used. Usually an 1.8 zetec flywheel is used along with pinto clutch. I don't have templates as my plate will be different. You would need to weld a lug in position on the other plate. This would be obvious when you bolt everything together.

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    Re: rx8 gearbox?

    Carnt wait to get Mine in

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    Re: rx8 gearbox?

    Quote Originally Posted by lee25 View Post
    I don't have the set up on an engine to measure but the set up should work with a variety of different clutches and flywheels due to the adjustment. The rx8 bearing is used. Usually an 1.8 zetec flywheel is used along with pinto clutch. I don't have templates as my plate will be different. You would need to weld a lug in position on the other plate. This would be obvious when you bolt everything together.
    Private message sent.
    1968 Ford Anglia 1.7 Puma engine/Escort front/5 Link rear/RX8 box
    http://www.Anglia1968.weebly.com

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    Re: rx8 gearbox?

    Quote Originally Posted by lee25 View Post
    I don't have the set up on an engine to measure but the set up should work with a variety of different clutches and flywheels due to the adjustment. The rx8 bearing is used. Usually an 1.8 zetec flywheel is used along with pinto clutch. I don't have templates as my plate will be different. You would need to weld a lug in position on the other plate. This would be obvious when you bolt everything together.
    Private message sent.
    1968 Ford Anglia 1.7 Puma engine/Escort front/5 Link rear/RX8 box
    http://www.Anglia1968.weebly.com

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    Re: rx8 gearbox?

    Quote Originally Posted by ugg10 View Post
    Private message sent.
    £75 I cannot send pm as I don't have enough posts

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    Re: rx8 gearbox?

    Thanks, will drop you a text in a couple of weeks when I get the Anglia back in the garage after being under a cover on the drive for the summer.
    1968 Ford Anglia 1.7 Puma engine/Escort front/5 Link rear/RX8 box
    http://www.Anglia1968.weebly.com

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    Re: rx8 gearbox?

    So much great info here, well done guys!!

    Are you all using the standard RX8 slave cylinder? What size ( bore diameter ) master to go with it?

    Anyone know what diameter the bell housing to engine plate bolts are? M10?

    I'm picking up my newly acquired RX8 gearbox next weekend, will be trying to fit it to my MGB. They do a type 9 / Sierra 5 speed kit for the MGB, so if that fits I think I should be able to get the RX8 'box in there - fingers crossed!!

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    Thumbs up Re: rx8 gearbox?

    great read

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    Re: rx8 gearbox?

    forgot to ask are you using spigot adapter with Freddy686868's kit

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    Re: rx8 gearbox?

    Quote Originally Posted by cl290005 View Post
    forgot to ask are you using spigot adapter with Freddy686868's kit
    no need.

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    Re: rx8 gearbox?

    Quote Originally Posted by cl290005 View Post
    forgot to ask are you using spigot adapter with Freddy686868's kit
    No need i don't like the idea of running an input shaft extender. With the 4 cylinder ford engines my adapter plate is so thin (whilst being strong enough) you don't need an extender just bolt the box straight on. Others make thier adapters too think needing an input shaft extender they can also not fully engage the input shaft in the clutch friction plate, this is another reason why i wouldn't recomend using an input shaft extention. Don't get me wrong other engines like the xe/ and v6 motors do need the bellhousing machined though but that is just the way it happens.
    Last edited by freddy686868; 05-12-2017 at 21:58.

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    Re: rx8 gearbox?

    Quote Originally Posted by BMCRacer View Post
    So much great info here, well done guys!!

    Are you all using the standard RX8 slave cylinder? What size ( bore diameter ) master to go with it?

    Anyone know what diameter the bell housing to engine plate bolts are? M10?

    I'm picking up my newly acquired RX8 gearbox next weekend, will be trying to fit it to my MGB. They do a type 9 / Sierra 5 speed kit for the MGB, so if that fits I think I should be able to get the RX8 'box in there - fingers crossed!!

    I have been asked a few times on ebay to look into the mbg kit so i would be interested to sort one out if there is room for it to fit. When i used the standard rx8 slave cylinder i used either a .7 or .75 (sorry can't remember for sure. The bolts are m10 in my adapters too. Hope that helps.

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    Re: rx8 gearbox?

    I am also looking into using the standard clutch arm to work in the standard ford possition using a cable the same as the ford set up. More of that in the new year.

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    Re: rx8 gearbox?

    Quote Originally Posted by freddy686868 View Post
    No need i don't like the idea of running an input shaft extender. With the 4 cylinder ford engines my adapter plate is so thin (whilst being strong enough) you don't need an extender just bolt the box straight on. Others make thier adapters too think needing an input shaft extender they can also not fully engage the input shaft in the clutch friction plate, this is another reason why i wouldn't recomend using an input shaft extention. Don't get me wrong other engines like the xe/ and v6 motors do need the bellhousing machined though but that is just the way it happens.
    thanks for the response, just wondered if you got my e mails asking about the measuring tips?

    thanks

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  37. #913
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    Re: rx8 gearbox?

    Quote Originally Posted by cl290005 View Post
    thanks for the response, just wondered if you got my e mails asking about the measuring tips?

    thanks
    Measuring tips? I must not have got your emails sorry, i am normally very good at replying. Saying that i am not normally on turbosport much these days.

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    Re: rx8 gearbox?

    Didn't use an input shaft extender on my zetec engine. I've got one of the other guys plates which is 10mm.
    The bore of the crank is quite deep but my bearing is only set in flush with the end of the crank and the input shaft is supported ok.
    Anyone know if other cranks are like this too?

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    Re: rx8 gearbox?

    Quote Originally Posted by davemk1 View Post
    Didn't use an input shaft extender on my zetec engine. I've got one of the other guys plates which is 10mm.
    The bore of the crank is quite deep but my bearing is only set in flush with the end of the crank and the input shaft is supported ok.
    Anyone know if other cranks are like this too?
    That is odd when i measured it all out i wasn't happy with any more than the thickness of my adapter plate. I didn't want to risk the needle bearings falling out due to the input shaft not locating fully in the spigot bearing. If it works it works though.

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    Re: rx8 gearbox?

    Quote Originally Posted by freddy686868 View Post
    I have been asked a few times on ebay to look into the mbg kit so i would be interested to sort one out if there is room for it to fit. When i used the standard rx8 slave cylinder i used either a .7 or .75 (sorry can't remember for sure. The bolts are m10 in my adapters too. Hope that helps.
    That sure does help, thanks Freddy!!

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    Re: rx8 gearbox?

    Hi Freddy, if i bolt my zetec to my rx8 box my input shaft is only going into the bearing halfway,are you saying yours goes in all the way and i am using one of your 6mm plates

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    Re: rx8 gearbox?

    Quote Originally Posted by muddy jeff View Post
    Hi Freddy, if i bolt my zetec to my rx8 box my input shaft is only going into the bearing halfway,are you saying yours goes in all the way and i am using one of your 6mm plates
    Yes that is correct. As long as you haven't pushed the bearing too far into the crank it will fit in great. This is because the rx8 input shaft sticks 4mm futher out of the bellhousing than a type 9 so when you space the box out 6mm by using an adapter plate that makes a difference of only 2mm. This is why i choose to make the zetec plates 6mm it is the maximum size i would like to make it and the minimum thickness i would like to make it to keep plenty of strength in it. The reason why i use steel instead of ally is because ally wouldn't be strong enough. (The last part i felt the need to explain because people want them made of ally for lightness, even though they only weigh in at around 1.3/1.4kgs any way)

    I hope that helps and if you still have questions feel free to email me some photos on rx8adaptersuk@hotmail.co.uk
    Last edited by freddy686868; 13-12-2017 at 17:32.

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    Re: rx8 gearbox?

    Hi all. I am currently fitting a 3uz into my rx8 retaining the original box. I am looking for either a flywheel adaptor or custom fly to match the two up has anyone know of anyone that produces one at all?

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    Re: rx8 gearbox?

    Hi all.
    Just looking for a bit of clarification on flywheels for this setup.
    I have an ST170 engine and RX8 6 speed box.

    I just started to start the "mating" process but hit a snag.

    I was under the impression that you could fit a Zetec SE 1.8 flywheel straight on in place of the dual mass lump, and then run a 220mm mondeo clutch on that which I happen to have in the shed (and it has the 1" 23 spline plate)

    However on offering it up, i see that the end of the crank on the st170 engine is a good 10mm shorter (closer to the block face) meaning I cant mount the SE flywheel on there.
    So what flywheels do fit??

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