Broke4speed
Well-known member
- Joined
- Oct 5, 2009
- Location
- Marionville, Ontario, Canada
So I travelled 200km and potentially used nearly half a tank of gas according to the gauge...oof. I filled up before I left but didn't stop to fill up when I got back, like I should have, so I can't say for sure what the MPG was...but I think it was bad. I'm still having the issue where it's lean surgey at 80kph (limit on minor hwys) and kinda richy at 100kph (limit on major hwys). I don't think I need more jets to try, because I've got most of them (seriously...$$$ ), but there's definitely something up. If I had to say, I'd blame the very-obvious huge overlap the PZ cams have but I can't afford to fire the parts cannon anymore . Reducing the overlap MIGHT help, but there's no specs for these cams anywhere so I can't even say I'm on the right track. I've had to run some big pump jets, a 0 bleedback valve, and a 3x stiffer than stock acc pump spring, just to try to overcome a lean transition that shouldn't exist, IMO...so there's definitely something I'm missing. The wideband readings are really bouncy due to having it mounted in only one runner of the downpipe too, so I am not sure I can even trust it. I've tried going by feel...but the MPG seems to back up the gauge...kinda.
I do NOT want to give up on the carbs, but I am not having any fun at all this year. I haven't driven it in a couple weeks because I just don't want to deal with it. Does anyone know a CHEAP (maybe free) way to advance/retard stock 16v cams? I've considered removing them and drilling new locator holes for the dowel pins, but the last thing I want to do is eff up my cam gears.
It's really looking like I'll be pulling and selling the 16v stuff sooner than expected, if I can't find a tuning compromise. I cannot spend any more money on this setup this year, the budget is at full stop.
I do NOT want to give up on the carbs, but I am not having any fun at all this year. I haven't driven it in a couple weeks because I just don't want to deal with it. Does anyone know a CHEAP (maybe free) way to advance/retard stock 16v cams? I've considered removing them and drilling new locator holes for the dowel pins, but the last thing I want to do is eff up my cam gears.
It's really looking like I'll be pulling and selling the 16v stuff sooner than expected, if I can't find a tuning compromise. I cannot spend any more money on this setup this year, the budget is at full stop.