purplecrx

Weekend work: Car was a wiring mess, so I converted it to OBD1 this weekend. Engine is a mini-me (SOHC ZC block, Z6 head). Car runs great, pulls like a bat out of hell. Went to start it to head back home last night and it took a while to get her started. She just wasn't getting what she wanted to fire up (keep in mind it is SUPER cold out here in Ohio). Anyway, I'll attempt to describe what is happening to the best of my ability.

She cranks, but she just doesn't want to grab. After a few tries she'll finally start to hit and grab 1000rpms but then BAM, bogs back down and dies. Rinse and repeat with lots of weird noises for about 5 minutes and i'll finally get her to idle and warm up. No problems when the car is warm. I'm thinking it is timing? The distributor is all the way advanced and the cam gear is set at zero. Previously the cam gear was +5 (10degrees at crank), but I couldn't adjust the distributor since it was barely stuck on there (have to jimmy rig an OBD0 dizzy onto an OBD1 head). Anyhow, I did retarded the timing a bit last night because the car was making a weird sound (knocking/pinging) and obviously that's bad. It's possible I overcompensated though.

Does anyone know how I should set the timing? Or if timing is even the culprit of this cold start issue? My head is also milled, same w/ the block so I have to compensate by advancing the timing some there, and the mini-me combo also likes some advance, but I'm afraid i'll get that knocking/pinging noise again. Any help is appreciated.

-Ryan

crx_88_si

why are u running an obd0 dist on a car that u converted to obd1 ?

purplecrx

I was stating that when the car was running OBD0 the dizzy was fixed in place and I don't recall if it was advanced or retarded as it was the only way it could mount. Now that I'm using the OBD1 distributor it is advanced the whole way.