[bluewater]

Hello all,

S3 newbie here. I have an '01 S3 that could use a new engine and I have a lead on a possible donor engine that is from an '02. From what I can tell, the 955 model was changed in '02. Are there major differences in the configurations of the engines from '01 and '02? Am I better off sourcing a '99 - '01 955i for my project?

Any help is greatly appreciated.

Thanks,
Jason

 

[mnhoulden]

I would say yes it'll fit. Some models change from year to year but that doesn't mean the frame and motor mounts have changed. I put an 09 engine in my 07. I also heard you can put and 02-04 top end on a 1050 engine as well for the 150hp!
Good luck!

 

[DEcosse]

I put 02+ Daytona in my T509 so it is quite possible - just a lot more to it than first appears
Yes you can change the engine, frame mounts are the same - but there are a lot more considerations of differences.
Alternator vs stator/R-R
Radiator/Cooling system
Headers/Exhaust
Right rearset won't work with the 02+ header
Airbox
and more .......

 

[mnhoulden]

Excellent things to point out DeCosse!

 

[bluewater]

Great information. Thanks for the pointers guys.

 

[JamesBe]

I would say yes it'll fit. Some models change from year to year but that doesn't mean the frame and motor mounts have changed. I put an 09 engine in my 07. I also heard you can put and 02-04 top end on a 1050 engine as well for the 150hp!
Good luck!

Interested in 150! I've got a gen 2 Speed Triple and am currently looking at a 1050. Can I put the Speed Triple head on for more power or does it have to be the Daytona of similar vintage?