:( Headache.....

 

After running my engine in with TotalSeal rings - I've apparently got a problem which haunts most toalseal users - oil burn, and lot of it!

 

So.... I need some 88mm (which is 1mm oversize for the VG30) rings. Nissan only go to +0.5mm, Johnny @ GPS hasn't a clue, and my local engine builders only suggestion is the 200SX rings - which are the correct size and shape apparantly - can anyone confirm this? (88mm, 1.6 top, 1.6 scraper, 4mm oil)

 

Any help regarding 200sx rings or where i may source some rings from would be much appreciated

 

Cheers

Not sure about the rings, but the S14 200SX pistons are 86mm std, and you can get 87mm oversized ones, not sure these rings would do 88mm pistons though :confused:

Hiya Si,

 

I don't know the info off hand but I've posted on the 200sx Owners Club. You can follow the thread here:

http://www.sxoc.com/vbb/showthread.php?s=&threadid=33857

200 rings are CA18DET (S13) are 83mm 1.5 top/1.5 scraper/3 oil, SR20DET (S14) are 86mm.

 

 

Find somewhere that stocks Hastings rings, I bet they do them, better than Nissan too.

 

I 'think' my total seals are okay, have you ditched the PCV valves and taken your breathers into a catch tanks?

 

the total Seal instructions say that you should get rid of the PCV vavles.

 

Have you done a compression test?

do you think the rings are leaking? or draggin goil in from the breathers etc?

Thanks for the quick responses guys.

 

Jez, my PCV valves are still in place, so no catch tanks...

 

My compression is a little close to the minimum spec for what Nissan specify. A few drops of oil in each cylinder helps - which isn't good.

 

Unfortunatly, I think my problems were bought on by severe over fuelling (Dodgy SE chip :mad: ) which has glazed the bores during the run in process - so will need a re-hone to remove this.

 

My fuelling has been corrected by an HKS fuel computer which is totally brilliant - but cannot 'undo' the glaze *sob*

 

my breathers BTW, are running clean, and I'm not pushing any oil through into the upper plenum.

 

Thanks again.. :)

bugger.:(

 

Did you fit low comp pistons? Don't forget that that will affect the compression.

 

Also how much of a difference does the oil make?

reason I ask is that the oil occupies some of the compressible volume of the cylinder so it will make the comp readings rise a little bit.

Pistons are the same as standard (8.5 : 1).

 

The amount of oil i've been putting in is a tiny amount - litterally a teaspoons worth (getting enough oil in to surround would be impossible due to the 60o tilt of the cylinders). Compression readings are altered slightly by the oil - but its still a little low for my liking. (Can't remember the actual PSI, but there's a green part of the gauge and i reach the low end of it)

For those who might be interested, I've just been out and done done a compression test on all cylinders:

 

[Cylinder No - Pressure (PSI)]

 

1 - 108 2 - 101

3 - 103 4 - 109

5 - 88 6 - 106

 

[Results were read after car had definitely reached normal operating temp, throttle fully open, all spark plugs removed, CAS disconnected)

 

So... :eek: a tad under the Nissan minimum spec of 142 PSI - defo new ring time.

 

Jez, thanks for pointing me in the direction of Hastings rings - reckon I'll either get these or some JE rings. (Hastings are preferable though)

 

P.S. compression gauge I'm using is a Draper one (brand new)

wow that's bad mate!!! :(

 

Didn't realise JE did rings.

I can try to get you a Hastings price if you like, my local place might not carry them being an odd size though, but can ask.

 

Are they std VG30DETT rings apart from being 1mm oversize?