After many hours research and consulting OCS, I decided to try something somewhat new with my piston rings.
I have decided to run Total Seal Gapless pistons rings. The setup includes a gapless top ring, with conventional second and oil control rings. To my knowledge I’m the only person in the UK to be running gapless rings on a VG30, but I know of at least one other in the states that have shown very positive results.
The term gapless is a bit of a misnomer. It’s a 2 piece ring, with their individual ring gaps rotated 180 degrees from each other, effectively making the area around the ring gapless. The positives include virtually 0 blowby (so a 0-1% leakdown vs 5% on a conventional ring), increased vacuum and reduced oil fuel dilution. The other benefit is you can run a larger ring gap on the 2 pieces, allowing the a wider margin for thermal expansion without the downside of increased blow by
The only real downside that I can see is the cost, at around 30% more than a CP Piston ring pack.
Hopefully this will help with slightly improving my idle vacuum (due to my cam profile) and a generally more efficient engine.
By
nickz32 ·
Looking at rebuilding a shell, I wanna make it as good as possible. At the mo I'm looking at doing
Full service
Turbo rebuild
Stripping the rear subrfame and using solid bushings and repainting
stripping the front subframe, Are there better bushes for this??
http://www.z1motorsports.com/product_info.php?cPath=6_8&products_id=3115&osCsid=cd58591d2130efc8c0f4874b157c4122
Waxoiling the underneath while its stripped
Either using a locked tt Subframe or an NA one, haven't decided yet
What else would be a good idea??
I'm not bothered about brakes disks or other bits that can easily be done after these bits have been done