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 ·
only one more day lying upder the car then im finished with that part
things iv done this week
cleaned up chassis legs and treated and hamerited
cleaned up most of the underside floor plan(no rust what so ever which was a surprise)
changed the manifolds to the japspeed ones
changed oil n plugs
refurbed the started
split headlighs cleaned lenses and sprayed the insertes white
sprayed the throttle cover.
things still do do..
plenum pull and spray black with the throttle bodies n balance bar going white
fit braided fuel hoses and strut brace
give the engine bay a good degrease n clean
tax and a good clean n polish and im done yea