MM 245

[M3M3]

LOL......ah, No.

 

I used a 4.44 diff for a while on track.  this moved the range so far up that 3/4/5 became the "close ratio" gearset.  problem is that at 7800rpm on the straights in fifth, which is overdrive, the driveshaft is spinning WAY beyond design limits.

 

switched to a 3.64, which appoximated the final ratios with the 4.44, but now having to deal with the huge gap bwtween 2 and 3.  a 4.10 just puts the shift points in all the wrong places at speed.

 

i really need to put a T5 tranny in the car.  common, bulletproof, currently produced, big support base and customizable.  a friend did the swap in his e30 M3.

Edited November 5, 2018 by mlytle

[zinz]

16 minutes ago, mlytle said:

i really need to put a T5 tranny in the car.  common, bulletproof, currently produced, big support base and customizable.  a friend did the swap in his e30 M3.

 

T5? Papa always was a Ford-man...I’m listening.

 

What’s entailed? A-dapter plate to a 265 bell housing? How well does the shifter line up with the normal ‘02 position?

custom driveshaft...still using a Guibo?

 

Sounds interesting. Especially when I see pics like this, with Ben T in full dissection of a Getrag at COTA...but that’s racing. 

 

Inquiring minds want to know more

 

Ed

 

 

[M3M3]

not done on a 2002 yet that I am aware of.  would NOT be "bolt on".  lots of custom stuff.  but...if has been done on an e30, should b doable for an 02!

[TobyB]

The t5 is not too bad- an auto bell housing will make for an easy adaptor,

it has a 10x1" input spline, and the shifter is pretty close to where the 2002 wants it.

There is a commonly- available bearing that should work as a pilot.

Hydraulic clutch.

 

If you go digging, the 1984 turbo t- bird has decent 2-3 ratios, and a .86 od, setting

you up nicely for about a 4.27 or a 4.44 if you're running 24" or bigger tires.  

 

I have one from an 86, which is also great 1-4, but it's an .81 od, which is a bit tall.

 

For 10x the cost of a junkyard trans, you can get any gear ratios you want.  

But that '84 turbo is not bad...

 

in an ideal world, I'd have time to see if the .86 od would bolt onto the tighter-

ratio gearsets of some of the .68 or .72 transmissions...  

 

Sadly, you'll be modifying the tunnel with more than a hammer.

 

Yes, you make a driveshaft, but get the Ford one as a donor, and it's just a matter of sticking

the BMW tail flange onto it.

 

And yes, the effing driveshaft is turning well over 8k with a 4.44.  It's more than a bit scary.

 

t

[Ian]

Another option is to use a transmission from an e36.  A stout design and lots of availability.  Ernie Bellos at Bellos Motorsports in West Palm Beach, FL used make an adapter for the bell housing.

[jimk]

All the responses indicate either no one has a MM 245 or won't admit it.

[yeewiz]

sorry, late to the party.  I admit it.  I'm away from my records so I have to do this from memory.  I bought the Ultimate version and Conversion kit as I wasn't interested in close ratios.  Is it what I expected?  Yes.  I don't have any complaints.  It works great and does what I want it to do without any drama.  Would I do it again?  Sure, but I wouldn't just blindly purchase it without doing the required research and cost/labor/value/time/logistics/benefit analysis I did the last time.  Hope this helps!

 

[jimk]

2 hours ago, yeewiz said:

sorry, late to the party.  I admit it.  I'm away from my records so I have to do this from memory.  I bought the Ultimate version and Conversion kit as I wasn't interested in close ratios.  Is it what I expected?  Yes.  I don't have any complaints.  It works great and does what I want it to do without any drama.  Would I do it again?  Sure, but I wouldn't just blindly purchase it without doing the required research and cost/labor/value/time/logistics/benefit analysis I did the last time.  Hope this helps!

 

Thank you kindly.  Good information.