Hi guys, have a B3 with the 90hp KE Jetronic engine with the MKB JN. Is in principle a castrated GTI engine, which was installed with 112hp yes as a DZ with the same cylinder capacity or as SD with 113hp with 1847ccm in the B3! My question now, mainly the power was achieved by another cylinder head with larger inlet valves and another camshaft! In addition, the compression was raised from 9.0:1 to 10 or 10,5:1! I now want the 90hp engine power on the jumps help, since it seems to me to be a little bit “stitched” in general! Cylinder heads are available at ebay for little money, rework and installation no topic! Question now, how was the compression increased? other pistons? Cylinder head removed? What else to consider, motor-technical? Greetings Achja, please no opinions, is an old car or something, is not worth it anymore, the B3 is BJ 10-86, has run 180tkm, runs perfectly, the first medium silencer was exhausted 2 weeks ago after only 18 years Since I am sitting on a duc in the summer, a new car is not very important for me! Alternative would be a B4 Avant 2,3 quattro at most, but don’t give it many!