mazdawat

Please someone tell me if i can bolt a standard 13b turbo series 4 motor onto my standard series 1 gearbox with out changing anything.

have been looking at countless threads and cannot find what i need as everyone just does the s4 gearbox swap too. I know its a weaker gearbox but if it fits, ill use it for now.

Luke

Sh00bs

iTrader: (8)

i mean... your goign to blow it up sooner or later. but yeah, it should fit.

who knows... first time you hit boost it could go. i would upgrade to a TII trans or n/a with stronger internals, just my .02

KansasCityREPU

iTrader: (9)

You will need to change the clutch. I could not confirm, but I believe the (s4) turbo clutch is 225mm. I do know that the series 1 (s1) is a 215mm clutch. I believe you can use the smaller clutch but I would advise against it.

"NOTE: Excluding the TURBO, all the different flywheels and clutches, from 74 through 92, are basically divided by 215mm clutch (74-82), and 225mm (83-92)"

Flywheel and Clutch Explanations

Flywheels and Clutches

Jeff20B

iTrader: (13)

S4 turbo clutch is 240mm. The S5 and FD is 235mm for some reason. Both work on T2 flywheels.

mazdawat

Thanks guys, yep after further investigation it looks like i have to change the flywheel/ cluch setup. So its definitely not bolt and thats the reason why i dont listen to people saying "should" bolt in no worries" haha. Going to go s5 turbo box and custom tailshaft.

Thanks for your help guys

KansasCityREPU

iTrader: (9)

Just for information, you MUST use the flywheel that is made for the motor/rotating assembly.