3000rpm, and a clunking starts????

[ib6ub9]

Oh dear,

I leant my step brother my car last night while in Brisbane, I got it back today, NO scraches so i was happy.. But then started the beast, Warmed her up, and then driving off i hear a clunk, clunk clunk about 3000rpm's... :pissed: So i got refered to an un named dyno performance place near where i live and they "didnt even have time to LOOK" So after being put ro 3 other places who all said different things i was wondereing if anyone here can suggest a "good" place to take my poor car!!!

I am supposed to drive back to canberra next thursday. But plans will change...

Cheers

[riggaP]

What was your step bro doing in it?

[ib6ub9]

Not sure... I got it back last night and was on morphine :gaga:( i had a back operation 4 months ago) and thats why i said yes to him for a drive.. BIG MISTAKE!!!

But i just have seen another place who works on heads and race engines and he thinks it has skipped a cog on the timing chain cause the idol is now sitting abourt 1200rpm... Strange.. But thats all i hope it is..

[Godzilla32]

Damn i'd be a little pissed! I just thought about it for a second and he could be right in saying it mite be the timing because if the clunking your describing is pre detonating it all adds up. Higher idle would also be the case. A tell tale sign would be a loose cam belt. If thats loose then its obviously easier for it to slip. So hopefully thats all it is and hopefully no engine damage has occured. Good luck with it mate. A nice GTR by the looks ;-) I'd be interested to hear what happens.

[ib6ub9]

Yeah, I really hope thats all it is.. I thought the same but after 6 workshops SOOO unsure about the problem i was scared it was a piston skirt.. But FINGERS CROSSED Thats all it is.

I will let you know tommorow afternoon..

[paulr33]

is it a clunk from the rear? i had a simiilar "clunk" on my r33 when i went past 3000 ish it turned out to be a suspension arm thingy was loose and would only "clunk" with a certain amount of force from acceleration, aka acceling past 3 grand. mechanic just tightened the suspension, after that problem gone

[ib6ub9]

paulr33

The clunking noise is from the rear of the engine bay.

[Trust33]

Once upon a time i used to own a gemini.Auto might i add.It had 3 motors put in by myself and a little help from friends.The 2nd motor which was built professionally.One night whilst driving down the m4 motorway had a terrible tapping sound that only seemed to get louder as the revs rose then all of a sudden nothing.....We later pulled the motor apart to realise that a conrod main bolt had worked its way loose only leaving 1 bolt to hold it to the crank.+ the revs added to letting it sail into a valve......Was not impressed that night.

[Trust33]

Once upon a time i used to own a gemini.Auto might i add.It had 3 motors put in by myself and a little help from friends.The 2nd motor which was built professionally.One night whilst driving down the m4 motorway had a terrible tapping sound that only seemed to get louder as the revs rose then all of a sudden nothing.....We later pulled the motor apart to realise that a conrod main bolt had worked its way loose only leaving 1 bolt to hold it to the crank.+ the revs added to letting it sail into a valve......Was not impressed that night.

[ib6ub9]

Well, I took it to Rahams in redcliffe who looked at the timing, They said it was spot on, No skipped cog or anything, Now i am starting to stress, They seem to think a change in oil from mobil 1 to start with to catrol r synthetic then back to mobil1 might have cause it cause they say that mobil 1 is not great for over head cam engines. They are 'almost' certain that its not a piston cause of the inconsistant noise... it comes and goes :confused: .

I just drove it home, It has no loss of power that i can notice.

Any advice or help regarding how to deal with this would be great, I yet have to get it back to canberra..

thanks for takin the time to read.

Chees Phil.

[predator]

could be number of things.. clutch..gearbox.. front diff (GTR right?) .. more likely to be front diff..

[ib6ub9]

predator: could be number of things.. clutch..gearbox.. front diff (GTR right?) .. more likely to be front diff..

Na cant be the front diff cause it happens wile the car is still with bonnet up and reving the car, I have been advised that changing oil from Castrol racing r oil to mobil 1 and then using the higher ultimate petrol from BP up here could just have cleaned out the carbon from the engine, So i was told to change the oil back to castrol, Cause their has been a little bit more than usual black smoke than i have seen before, but no loss of power, Clutch, Yes maybe as i has slipped a liitle of recent. but to start i will change oil and then go from there i think..

[ib6ub9]

Ok, Well, The f@#ken mechanic that looked at my car on Friday checked my cam timing and cam noise to see if there was any problems, As a few of you may know, YOU ARE WRONG ABOUT IT BEING THE OIL GRADE YOU!! :headshot: Oh this is 'g' rated isn't it... Anyways, She stopped last night on the way back from the bwcp. Not a good noise at all, But even worse is the fact of paying this "workshop" as they call them selves $215 to do this work has pissed me off SOOO bad..

Ahh think of calm blue oceans, Nice calm blue oceans Phil...

So its either the cam barrings or the big end barring by the horred rattling from the top of the engine...

I thank all you guys that did stop for melast night, and krawler, I ran outta credit but the message about the N1's, forged pistons, MMM, done me better than you can think,

Thank you to erin too for getting me the tow truck and andrew in the other "one of many" white 33 for the lift home on that fantastic night..

[Amaru]

Hey Phil

Not good man Hope you get it sorted out soon, and im crossing my fingers for you its not the dreaded spun big end bearings problem, but not sounding too good.

Nik

[Bobjones]

There are other places in Redcliffe that are very good at diagnosing and repairing RB's...refer sig

[NismoGirl]

I hope it all sorts itself out for you Phil. I didn't realise that you paid that person to tell you about the oil! And checking the timing! $215! Far out.

Lets hope someone can work out what's wrong with it or you can get it trailered down to Canberra cheapish.

[ib6ub9]

Ok, Here it is, I took it to Gavin at auto tek, And he was fantastic, very helpfull, straight forward in the diagnosis.

Fu#ked, It needs a rebulid. Big end has gone, Now sounds like the pistons are clipping the head. He offered to rebuild her, but i have to be in canberra this friday to get back to work, SOOO After calling Tnt and many other places with quotes for around $720 to $811.40, i called my friend Parviz from fast and furious imports in Canberra, $425 all the way to his workshop, So i am happy about that but i am going to miss driving her back home...

So a rebuild with some goodies is on the books and now my GTR service amnual will get its work out. Should be back on the road in a few weeks...

Amaru, Cheers thanks for your hope. I need it..

Bobjones. I went to a few places here who just threw me on to the next one. If Peninsular is a place that specialise in 4wd's, They were included in the pass on...

Nismogirl.. I cant say it enough to you and krawler, THANKYOU THANKYOU THANKYOU.. :jump: to you both for the hositality and help.. Both you guys and others like jason, Paul and all the SAUQLD have made my holiday one to remember...

[FATGTS-R]

Have you had an oppurtunity to have a "quiet word" to this infamous step brother of yours?

[ib6ub9]

Yes, He left my dads house today, On the quiet after getting the result from Gavin... Oh with assistance from my dad to leave..

Just spoke to RACQ as the first mechanic who lokked at it was a approved repairer and will be speaking to their Technical advisor tommorrow morning.. So lets see...

[NismoGirl]

Nismogirl.. I cant say it enough to you and krawler, THANKYOU THANKYOU THANKYOU.. :jump:  to you both for the hositality and help.. Both you guys and others like jason, Paul and all the SAUQLD have made my holiday one to remember...

It's ok matey Only too happy to help someone in need. I hope she gets back down to Canberra alright and hope to see her back on her legs and terrorising the Brisbane streets again soon.

Good luck!