NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   Swapping An S4 Tranny Into An S5 Car. (https://www.nopistons.com/2nd-generation-specific-17/swapping-s4-tranny-into-s5-car-43601/)

1987rx7guy 01-22-2005 07:19 PM

Is there any problems doing this swap? Its temporary, i hope, while I get my S5 rebuilt locally.



What problems should I look forward to?





Santiago



ps- thanks for looking!

Apex13B 01-22-2005 08:35 PM

take out reverse light switch out of the top of the tranny, stick a screwdriver in there and pop the revese detent pawl and reisntall gearbox ;-)





s4 and s5 tranny's are interchangeable

Lionheart240 01-22-2005 08:47 PM

Yeah.



I've got an S5 shortblock



S4 manifolds and wiring



and I use an S4 tranny



Works just fine...except that the tranny is a POS. lol

1987rx7guy 01-22-2005 09:09 PM


Originally Posted by Apex13B' date='Jan 22 2005, 06:35 PM
take out reverse light switch out of the top of the tranny, stick a screwdriver in there and pop the revese detent pawl and reisntall gearbox ;-)

s4 and s5 tranny's are interchangeable


is that a serious suggestion? I would think sticking a screw driver in there would be "unadvisable" https://www.nopistons.com/forums/pub...IR#>/blink.png

1987rx7guy 01-23-2005 04:18 PM

Ok guys I think i'm in luck! I got my true duals off and started thinking about whwat to do first before removing the damn tranny....

Dropping the tranny low enough so that I could unscrew the sensor that goes in that spot was pretty simple, with air tools .



Well I poked an allen wrench from my roller blades in there and used it as a lever to pop the switch back to the neutral position! Instead of wasting a good hour replacing exhaust and **** I decided that I would run the engine open header to test if it had worked or not. Well From what I can tell I have forward gears again!





Here is what is screwing with my head though! If I leave it in neutral now and ease out the clutch the drive shaft still spins! So.....now what does this mean? I might just bolt up the drive shaft with open header and see what happens when the whole drive train is hooked up.



Any comments/advice?

j9fd3s 01-23-2005 04:56 PM

put an extra washer between the reverse light switch and the trans, then this wont happen again


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