MC vs. 20vt-weaker bottom end.

[JShadzi at aol.com]

Yes, you are right, I have wondered about this myself.  IME, 3B rods are good 
to about 400hp which would indicate that even the RS2 was within its limits.  
The MC conn. rod is considerably thicker, and shorter, maybe with the 20v 
spinning higher revs they wanted to use a longer, lighter conn. rod?  In any 
event, I suppose if it is in the low 300 range they will be fine, I'd be 
interested to hear what others have to say.  But that would mean that the MC 
is the strongest bottom end of all the 5 cylinder motors produced.

Javad
80tq.com


<< Alternately, in ETKA, I've noted the next things:
 027 198 401A Rod set KV NG NM 3B ABY |
 035 198 401C Rod set KV NG NM |        these 2 seem to change with L to M 
 year model change
 054 198 401  Rod set 7A
 
 034 198 491A crank bearing kit KV NG NM 7A
 034 198 491C same for 3B/ ABY
 
 but in the 91 model year Coupe quattro, the following crank is listed for 
 the KV NG 7A 3B ABY engine codes 034 105 101S...pretty weird, as these would 
 not be supposed to share the same crank....
 Maybe the difference in the crank bearings b/w NA and T engines would be the 
 material and its strength.....  >>