im checking out my friend's del sol--he just bought it after learning of all the hard parts on it, but not the assembly details. it's a 97, using a p73 ecu on a b18c engine with jun3 cams and a toda header.

with the adjustable cam gears zeroed out, and the distributor rotated all the way towards the firewall (advanced, right?) it will only show 11 degrees of advance. this does not change if i plug in the 2 pin service jumper to adjust the base timing.

i would like to get the ignition timing back to 16 degrees on the stock ecu, so that i have a starting point to adjust the aem ems from (it's just sitting here until this is solved)

i have seen timing get screwey after milling a cylinder head too much, possibly the same from decking the block, but this is the worst i have ever seen igntion timing off!

any help is appreciated!

 

you should try and get the cams and crank at TDC. They're most likely not right now if machine work was done at the cam gears are at zero

the rule of thumb around here is for every .012 inches removed, you advance one degree (both intake & exhaust cam timing)

i would suggest 'staking' the cams with a small pin punch. Theres holes thru the cams & cam holders to hold the cams at TDC for cylinder one. then use a long extension or screwdriver in the spark plug hole to determine exactly when TDC is for cylinder one.

 

thanks--im working on that right now...still seems like the igntion timing marks are not lining up...