Getrag 245 on S14 Block Issues

[M3M3]

27 minutes ago, Mark92131 said:

If you elect to remove the index pin on the JBR flywheel, do you need to rebalance it?

17 hours ago, M3M3M3 said:

The index pin on the JBR flywheel is removable. But like Jim said, balance issue!

 

 

[jimk]

I hope there isn't contact again because there was more interference than that small mark on the casting when I had the hit.  It was with the starter rolling the engine and the mark was quite a bit more. 

[M3M3]

• or, the PP can do the clearancing for you....😎
• 
•  

[jimk]

9 minutes ago, M3M3M3 said:

• or, the PP can do the clearancing for you....😎
• 
•  

I hope you can still touch your toes.  That's massive and not to be considered trivial.

[Son of Marty]

Order a replacement flywheel from Blunt and then instead of ice cream maybe he'll send you a new pair of tighty whiteys😁.

[M3M3]

3 hours ago, jimk said:

I hope you can still touch your toes.  That's massive and not to be considered trivial.

wait for it...

 

[Lorin]

Watching that video made my ankles all tingley !!

[m-tuner]

If you are installing a e30 m3 engine into a 2002, why are you using a 245 transmission that will not take the power of the m motor?  the 245 trans is a 2002 trans withe overdrive, the motonic m3 engine is a exclent system, addig a aftermarket injection to the motor is a can of worms that is not needed, the next thing people do is add horsepower to the m3 engine, then a simpler fuel injection alpha N is used,  and the 245  trans is willfuly inadiqute ,  my last M2 build included the correct M3 bell housing, and the larger m3/635 transmission and guibo ?  you think a modfied M3 running a 2002/320i guibo is going to last more than a hour of hard driving good luck with that,  buildit right from the start and you wont be doing it over again  Bruce Mtuner

[Ian]

Actually, the 245 transmission can take an S14, at least if you don't drop the clutch and take it easy on the driveline.  I've had the S14/245 combo for many years and many track days with no problems.  As a bonus it fits better and is lighter than a 265.  But either transmission works fine with the S14 in the 2002.

[Mark92131]

2 hours ago, m-tuner said:

addig a aftermarket injection to the motor is a can of worms that is not needed, the next thing people do is add horsepower to the m3 engine, then a simpler fuel injection alpha N is used

 

Didn't want to cut up my transmission tunnel to fit the Getrag 265, street build, so stock S14, using Alpha N with MAP overlay for injection management and bullet-proof EDIS-4 ignition (no modification to the Getrag 245 for sensors).  Thank you for your feedback.

 

Mark92131

[Mark92131]

A quick update...  If you are using a Getrag 245 transmission without installing sensors for the stock Motronic ECU on your S14 and using the S14 flywheel and Pressure Plate, the timing lug on the S14 flywheel will touch the inside of the Getrag 245 bell housing.  After taking a small amount of material off the leading edge of the timing lug, I was able to clear the first bump in the bell housing, but not the next bump.  Not wanting to remove any additional material from the timing lug, I used a dremel to smooth out the bump.  Thinking I was good, I reinstalled the trans to the motor, turned the motor over, and clunk, the lug was hitting the boss for the timing mark hole.  It took me 2 tries to clear enough material from the timing mark hole boss to successfully spin the motor without interference.

 

A side note...  I was using the 323i Clutch Release Bearing (M10 228mm flywheel and Pressure Plate) for the Getrag 245 install, but the S14 flywheel and Pressure Plate combination is larger, so I ordered the shorter M3 Clutch Release Bearing.  This significantly changed the transmission mating issues I was having before.  During the multiple reinstalls with the M3 Clutch Release Bearing, the transmission would mate with a satisfying clunk.

 

Hoping to install the subframe on Friday.

 

Mark92131

 

 

[M3M3]

On 2/19/2023 at 11:24 AM, m-tuner said:

If you are installing a e30 m3 engine into a 2002, why are you using a 245 transmission that will not take the power of the m motor?  the 245 trans is a 2002 trans withe overdrive, the motonic m3 engine is a exclent system, addig a aftermarket injection to the motor is a can of worms that is not needed, the next thing people do is add horsepower to the m3 engine, then a simpler fuel injection alpha N is used,  and the 245  trans is willfuly inadiqute ,  my last M2 build included the correct M3 bell housing, and the larger m3/635 transmission and guibo ?  you think a modfied M3 running a 2002/320i guibo is going to last more than a hour of hard driving good luck with that,  buildit right from the start and you wont be doing it over again  Bruce Mtuner

Sorry, none of that is true.

 

245 trans is plenty strong enough behind a modified S14.

And the six bolt guibo is completely up to the task.

 

Or maybe I am just imagining my 245 trans and 2002 guibo survived 7000 hard track miles behind a cammed, alpha-n, carbon airboxed, chipped S14 with a race clutch?

 

 

 

 

[2002iii]

I know for a fact @Doug Riparetti has had a getrag 245 behind his 200+hp s14 with 4 motorcycle carburetors for many thousands of miles.

[Lorin]

Alpina put 245 gearboxes behind tuned M30 engines in the E21 chassis. 

[Doug Riparetti]

Because I did toss the ECU, the bungs for the sensors were not required with the "Electromotive" crank trigger system I'm running.

 

Just shy for 78,000-miles on my G245, no problems regarding reliability.