timming question

[BELL]

okay so i was going home tonight, a mbz 320 clk rolls up (i've run those to the ground when i work for mbz, with the 86 svo.). 1st is good nice hard pull slight detonation when i push it over 4500 at full boost, 2nd is nice, pulls hard starts to detonate on the top end of 2nd about 4900. 3rd pulls okay but starts to loose momentium around 4200rpm. i've run over clk 420's at 22psi, but the car seems so much faster at 15psi with the timming at 12 degrees btdc. it seems to feel like it runs out of fuel....


someone give me a good set of timming specs i think the FPR should be around 40psi at idle correct me if i'm wrong

 

[Brantley]

Sounds to me like you're definitely leaning out big time.. a hybrid & ported head, etc on stock injectors at 40psi? That's got to be really lean. You can check this by cranking your fuel pressure up about 10 lbs, and see if it helps any. You really need a wide band O2 so you know what's going on, and then from there you can get larger injectors and tune the ECM to get it all working right.