dennday67
Well-Known Member
Ok for the past couple weeks ive been working on my neighbors 1987 W150 that has the stock dissy and computer on the drivers fender that adv timing. I installed his rebuilt 318 that has magnum heads, I think 10:1 compression, and once again I think mp .484 lift purple shaft cam. we got it all primed and started. I tried to time it but couldnt see the timing mark. (and I did make sure #1 TDC mark lined up and rotor pointing to #1 plug like I always do). adjusted the timing by ear and broke in the cam at 2000 rpm for 20 mins. sounded good, didnt over temp and had great oil pressure. after the 20 mins I lowered the idle and checked the timinging and it looked like it was 25-30 ATDC. Tried adjusting but the closer i got to zero it would die. I pulled the dissy, rotated the gear and reinstalled the dissy after double checking #1 TDC. fired it up again and it was at 15 deg BTDC and sounded good. got it down to 10 deg BTDC and would stumble. back up to 15 deg BTDC in gear it will die. Called the engine builder and he said he used a deg wheel to install the cam. before I redid the timing and it looked like it was at 25 deg ATDC it would at least stay running in gear. and with out touching anything it will step up the idle once in a while. I think there is something up with that computer and dissy. Ive only ever worked with the old school ecu and hei mod. Oh and after break in while we were working on the timing his radiator blew and he had it checked out by a shop.