gapless rings

**hypo23** · 14-05-2007, 05:43 PM

love ke70, i also thought maybe turbo seals too but i got all new seals in that too the second time round just so i could eliminate every possible thing.

rad28, if you getting gapless from jeffro pay the bit extra and get him to build it as it seems he deals with these on a regular basis and would know about them than most other people on here.

**jeffro ra28** · 14-05-2007, 06:14 PM

Steve,

Every set of JE pistons iv bought (work) has come with file to fit rings, except for a 450 motorcross bike engine im doing.

It would be wise to make sure that your 1g pistons didnt come with file to fit rings. Allan or Tim at PW should be able to tell you this of the top of their head. If not, then check with the engine builder(if you didnt do it yourself). See if they act dumb when you ask them what the ring gaps were.

TotalSeal rings should come with plastic tabs on the corrigated oil ring (between the two oil rails). This is to stop them from overlapping. If they didnt or were removed, a chance exsists that the middle oil ring has been overlapped on one or more cylinders. Which would explain your smoke.

Does you oil smell like fuel? Does it turn black quick? Is there a crankcase breather you can pressure test from while the engine is running? What do you spark plugs look like?

The only other governing factors controlling this would be hone pattern, what stone grit the machine shop used on the bores, clearance and your run in procedure.

As i said, we tend to run these sorts of engines in on the harder side of life.
Typically 800 ft pounds of torque at 3500rpm

**jeffro ra28** · 14-05-2007, 06:33 PM

Would it also be fair to say that these rings are intended for performance use. Idling or traffic driving isnt exactly performance

They are designed to be loaded, not idled.

ed · 14-05-2007, 09:17 PM

the 1uz is gracd with a set of these rings at present.... will write up a thing when its done and see how it smokes

**1JZ-Rolla** · 14-05-2007, 11:03 PM

I recall the installation instructions for my totalseal gapless rings as having very strict instructions to NOT oil the rings/piston assemblies prior to installation in the bores other than to smear a light coating. It seems that many conventional engine builders like to slap on a lot of oil (if not dunk the whole piston in a bath of oil

) prior to assembly, which does nothing to help the bedding in process with ductile/moly coated gapless rings apparently.

Is it possible that yours were excessively oiled before installation?

**3t-RA40** · 14-05-2007, 11:38 PM

Steve, have a chat with Kev at Price Engines at cardiff (in the old Repco workshop). He rebuilt my motor with Ross Forged and gapless rings and I've had no problems. I also ran my motor in with a standard computer so over fueling through limit/poor tune was no issue.
Cheers,
Neil.