Duncan

not sure, the machine shop can decide. the mains are pretty bad though and there is scoring so odds are it throw away. probably bent too, they normally are after this sort of thing. this isnt meant to be the report my engine failure thread though, I'm sure there is one of those somewhere....

change is both inevtiable and good. I guess I can't talk about what I did to my stagea today in this thread tho.

pulled the motor apart today, the the main bearings were f**ked although not spun yet, and the big ends were almost perfect (just some foreign damage, I guess as the mains died). Good call Dan so 1 point to the oil analysis. Does anyone have results for a motor just after run-in?

2 chat threads merged....only 1 per forum section

lol i think they are getting less serious. we now own the super turbo from ep15

Last page cleaned up by a useless admin. Keep chat to the chat thread, there is already one in this section and we don't need every thread in here to be taken over by chat. Warnings/bannings for continued off topic chatting

lol pete is visitng ryan's place/???

c'mon guys, its a free intro to motorsport day. you can't really complain if you are not a n00b (ie have held a cams license). the idea is to give people a no cost chance to have a look at motorsport. ML73ZR, you would have to check the details, but I understand having a road license or not will not be an issue.

that was pretty much what i was thinking. ahh well its good not to be bored at xmas.

hey I'd be happy to be wrong on this one!

Hi Dan, no this is regular 98. Interesting reminder about E85 and oils though. One question I still have for you.....do the bearing levels look high enough to assume the motor is dead/nearly so? ie should I pull it out and strip it to check? I know its hard to guess on the interweb but just interested what you would do if you got that report.....

Well...the context is that it is only 7 days old....but they are race days. The motor has done about 1000klm and is on it's 4th oil change and 4th oil filter. Any initial wear should be long gone. Anyway, I spoke to the lab today. Basically their take on it is very high bearing levels is.....looks bad but motor is not necessarily dead....change the oil and check again after next race day. most likely cause of bearing damage is oil not OK (as shown by viscosity being 50-70% of rated, ie around 30 instead of 50.) most likely cause of oil breakdown, given the quality brand and number of inclusions showing it is a quality synthetic, is fuel in the oil.

yeah I understand....but frankly he would have got 3x the orders if he charged half the price like everyone else does. I normally buy pics when I go to a new track but he almost talked me out of it at that price. BTW good to see you were trying too

lol I thought Ryan was the blonde. too late for you mate, and looks like they are OK anyway....but be aware the CAMS rules for boots are changing next year (actually they changed 2 years ago but there was an amnesty). You now need to the FIA standard (as yours seem to), not just the SFA or whatever the other standard is called

interesting...I'm willing to bet they don't have many. I just picked up the last set of rb26 ones from my machine shop's supplier. Mains from Adelaide, big ends from maroochydore

nothing wrong with King bearings, cheap and pleny of people using them. As always it is the maching, measuring and cleanliness that matters. BTW ACL are in liquidation and are not making new stock - so King are really the remaining choice unless you want to be reamed by Nissan

haha I've been there often enough. (and just so it's not off topic) I looked at my engine sitting on a stand with new bearings and remilled sump adapter ready to go back in

haha they put that concrete on the inside of the corners for a reason, right?

pics finally made it (by far the most expensive I have ever bought from a track day). OK pics although they don't really show the background much, could have been anywhere. I've narrowed down when I scraped the wall....sometime between 10am.... and 2pm.... in any case, I was taking it easy on saturday, before finally having a go on sunday No trophy, but it was a good fun event

thanks supa steve. BTW I am not sure of the previous life of this particular block, it may or may not have had a spun bearing before. I got it second hand and machined it. oilcheck site suggests alumnium and silica are signs of dirt, mine are both outside normal but not flagged as critical like the bearing indicators. not arguing, just trying to learn....

yeah but that would cause big spigot wear first right overheating on the last motor was due to coolant loss (ie pressure test would have found the problem, but I never did one). eventually it did a head gasket from overheating which is fair enough. BTW I don't want to give the impression I have had lots of spun bearing motors. I have had a few but reasons for each (oil system mistake, bearing clearance mistake and original factory motor). Also killed one with a dying fuel pump causing pinging. Killed 2 from overheating (both dead head gaskets - the one above and one because the radiator was too short for factory mounts). The real question is - what does this analysis tell me other than the obvious (ie bearings are f**ked). No chance I am running the motor without tearing it down.

indeed. new clutch and flywheel on this motor. same gearbox for years but new spigot bush, and they are all outside the sump anyway. FWIW also new harmonic balancer on this motor

yeah I found that interesting too. 2x the acceptable level of fuel. petrol is not a good lubricant. zeb, it is an entirely new bottom end, head was machined and re-used from an old motor, not the last one. unlikely (but never impossible) that it is related to a single bad part.

lol at strange engine number. not sure what the P stands for either. I assume copper and lead make up tri metal ACL bearings. that is why i was wondering who knows how to read/explain these things. The block is a virgin in my use, although it was second hand and machined including 0.5mm overbore before this use.

oil analysis was $58. Oil change is $120 for oil and filter, + labour. Which is why I was wondering about people using them on a preventative basis. I intend to.