caminperth

Nope.. I'm thinking that a bit of low compression in one cylinder is something I can live with for a while.. What I am worried about is why it is running lean when the fuel ratios were ok on the dyno...

The trader rating thingo WAS just located under the number of posts.. wonder why they moved it?

Man these RB engines are strong! The story goes... Had it tuned Sat morning. All the air/fuel ratios were right and it made good power for stock turbo and cooler - a tad under 260rwhp. It was a beautiful day and after having a bite to eat - my arm was twisted by a certain whore expert to go for a drive so we decided to drive up to Chittering... After a gentle cruise up the freeway and a meander up towards the pine plantation near Wanneroo raceway, we turned off toward Great Northern highway and started passing some slower cars (which just happened to be all of them:D).. After a nice run I was onto the final straight and doing some good revs in 5th when something let go and I lost power... "hmm" I thought.. "wonder whats wrong?"... We pulled off - inspected my engine which seemed to have a slight miss, decided the plugs had finally given up and decided to continue on and pick up some new plugs on the way home. After a nice drive out to Chittering, back via Joondalup and through to my place in West Perth, everything was running ok with the exception of a slight miss.. My baby idled itself down in the garage and the whore expert and I went to work to replace the plugs... What I saw next nearly gave me a heart attack... Somehow numer 5 plug had lost most of the hook over the electrode.. it just seemed to have melted away... "hmm.." I thought "wonder what the others are like.." Number 3 was the next casualty. All I can say is that it had been obliterated... the hook over the electrode was completely missing and the electrode itself looked like it had suffered some sort of explosion as it was missing down to about 10mm inside the plug... Panic stations were manned and calls were made.. I ended up replacing the plugs and turning it over.. Everything ran ok with a slight miss at idle - nothing more.. I let it be and decided to limp it up to a garage today... Enter the compression test this afternoon. I would definitely recommend the Ultratune in Warwick. Dave the mechanic who works there is an absolute champ..Anyway - I digress.. So we pulled out the plugs (that were quite white) and attempt to do a dry compression test and it turns out his new guage is broken. Never fear, you could actually hear the difference between the compression in the other cylinders to number 3 cylinder. Then we try a wet compression test and it seems to come up ok. So we bolt everything back together and do an emmissions test on it. This showed excess fuel/oil which would indicate a tired engine. While it was idling, there was an arcing noise coming from under the plastic cover over the coils which seemed to coincide with the missing. All of this tells me a few things: 1. The white plugs (100kms old) tells me that it's running lean 2. The wet compression test tells me that number 3 is low and that the rings are possibly to blame 3. The arcing sound tells me that one or possibly more of the coil packs is doing something it shouldn't So after all this I gave the car a right caining, as it desrved no less, and everything was fine. Aside from the missing at idle, everything else seems in working order... Plan of attack: 1. Talk to the tuner and possibly run it up on the dyno again to find out why it's running lean. 2. Get an endoscope and check out the damage to number 3 cylinder. 3. If not too bad - thrash the car like normal. I'm thinking that the low compression has always been there and I'll fix it when I get round to doing a full rebuild.. Comments? Opions? Have I reached the completely wrong conclusion? Help is needed... Cam PS - if you got this far - thanks for taking the time to read it!!

yea.. it was.. I still love those dog ugly things.. Anyways - I'm off to get some lunch and go compression testing. Will pass on the results and will get you to give me ideas of who/where to go... if you don't mind of course.. see ya guys/girl...

LOL @ paul... well I may have used to drive around in a Walkinshaw at one stage... hehehe... Tuesdays are free Niz?!? what you sellin?

*best cartman impression* where are my covers?!?!?!

hehe - nah, never a full one.. the only reason i ever bought a holden was because it had a nissan engine in it... used to make little vl trevs cry when i said that cause it was a fairly tidy n/a vl...

lol - thanks neo.. yea - the only one that didn't sound like it was full of trev idiots was the warrick one...

righto... found someone who can do some tests today.. ultra tune in warrick.. the guy was the only one who didn't say - "one of those import things.." with distain.. it's not a full compression/leakdown.. just a wet and dry compression.. and another test that i can't remember what he called it...

thanks neo.. yea.. phoning round to try to get something started...

heya dan/neo... hows things?

yea... me kinda blew apart a plug and melted another...

LOL - heya snyper.. how goes it.. Niz - no fair.. it was my idea.. I wanna go down south too!! *best winey voice* hehehe...

so do i... i was hoping to take a friday off this week and piss off down south to hide and get my head together.. guess that won't be happening for a while now with time off and extra $$ to spend... and no transport.. poor me... hehehehe... **** i should just got shoot myself and get it over with.. LOL..

I was readin back - no job for nizzy yet?

well i hope so.. i'm thinking it's just a bent or burnt valve.. problem is i need to find out why it leaned out so hard to detonate enough to melt one plug and blow apart another one... looks like i'll be pulling off the injectors too and getting them flow tested... maybe it was just a bad batch of fuel... ran fine on the dyno only a few hours before.. *shugs*

thanks.. it's going to at least involve removing the head tho... looks like with the usual style of things in the import industry it's going to be apart for a while...

zanda - no.. paul's trying to sort it out for me.. steve is going on holiday or something? think if something isn't sorted by lunchtime I'll be ringing a mechanic I know and getting him to have a look... *sigh*

morning... me hopefully getting the car in for a full compression and leakdown test today...

thanks rob.. i hope so too... trying to get my motorbike working and it has a dead battery.. doh - i'm outa luck this weekend!

Niz - stupid speeds starting with the number 2... something goes astray and i suffer major power loss... i drive for another 100km or so and then pull out the plugs.. and nearly break down in tears... something has gone bang inside big time.. it's idling funny and doesn't have as much power.. i'm thinkin i've hurt a valve and that the injectors need checking to find out why it all went bang... going to get it pressure tested to find out if damage has been done on monday hopefully..

Niz - I think most ppl here would have a hard time giving that Supra a choppin...

Anyone know what the "Trader Rating" thingo is under the avitars? Currently I'm not worth trading?! Does that mean I'm a keeper? hehehe

Kym - it should be like maybe 8 bolts? I'm sure you can work it out...

Raz man hey?!? THAT one is goin in the memory banks..