They do not sell the p29 pistons here locally so I was wondering what other rings I can use. I was thinking jdm d15b rings would fit properly?
get rid of the p29's get some flat tops and mill the head/block for more compression.FUCK!!! I just removed the piston from the block. The ringland is broken. Should I replace all of them or should I just replace the broken piston? I knew I had a compression leak from #4 so I thought it was the rings, then when I pulled it out the ringland was shit.
was it easy to tell that one cylinder was low on compression? how did it start? im wondering if i have low compression on a few cylinders because of bent valves.well the 3 other cylinders had 250 psi on the compression tester. this one had below 100 psi. and the cylinders have slight scuffing but nothing that grabs my fingernail so I think it's still good.
Sounds like SOHCitTOem has figured that out too. I know what those maps are, but have never paid enough attention to know what needs to be changed...this is most def a tune issue.. possible too much timing to cause ring land cracking etc..
Now that's scary. It's no wonder you didn't have any compression.
Everyone seems to swear by the YCPs when it comes to Vitaras. Of course you'll never know if they're better than the Nippons unless you reinstall tham and keep the same tune.My pistons by the way are Nippon of America. I'm gonna order the YCP's this time around because they seem better built. I'll post my timing maps so you can take a look.