Help! My Gtr Rattling Noise :(

[pism]

so i got my R32GTRvspec-1 a couple of days ago and i didnt notice so maybe its just started to happen when i take off or get to about 3k revs its starts rattling from engine its pretty loud lol and i know this sounds bad but theres no loss of power or any other noises its a really fast tapping but i dont notice anything else is it meant to make this noise its hard to explain what the noise is lol , is it possible its injectors or tapets or sumthing , imj goin to takeit to xspeed to see hat they think but just wondering if any one else hears things liek this lol any help would be apeciated , thanx

matt

[pism]

the eingine revs fine and it hold a bar of boost fine so im not sure if its anything crazy or not lol im alos wondering for peoplke with rb26's when does ure limiter stop u reving cos mine goes past red to 9k then stops me i opend it up once to see what it revs o n it went past red lol so maybe its bin tuned to do so ? i know it has a chiped ECU tho

[GTRgeoff]

That would probably be the big end bearings, especially with that redline.

Do Not drive the car!!!

Drop the oil into a clean pan and see if there are any metallic flakes, tiny ones that will look like gold. If so then get a tow truck to take it to a workshop.

9K is a little bit much to be revving it to unless it is a really strong engine build.

[pism]

yea thats what im thinkin now im worried :'( lol going to drop oil now

Edited August 19, 2007 by pism

[pism]

its gets really hot in the engine bay top but it doesnt over heat the temp gage stays normal but lift the bonnet close ure eyes cose its hot any idea on that ? oh well guess ill have to rebuild >.<

[GTRgeoff]

They are always hot in the bay after running.

[pism]

yea , how much do u think bearings will cost ?

[benm]

pocket change compared to the rest of the rebuild cost.

[Denver]

i wouldn't be expecting change from 6k

[GTRgeoff]

Bearings are about $140......

You are looking at about 30 hours of labour, machining if you have damaged the journals, then the inevitable forged this and that, other extras to get done while the engine is apart like making sure you have the wider oil pump drive (hard to know on a 93 model) and so forth.

probably not much change out of $5K if you keep a lid on it

If you let yourself get screwed on the job then not much out of $10K

Get a very hard firm quote up front and written variations on anything else that may eventuate.

[benm]

Get a very hard firm quote up front and written variations on anything else that may eventuate.

Maybe first off you would get the engine removed, stripped down to see what needs replacing and then get a quote from there...

[pism]

ok talked to my g/f's cousins mate who owns a engine rebuild place and looks like its a rebuild lol n looks like hes gonna sort me outwith a proper forged everything depending on what the problem is properly so could end up bein a good thing this lol , hope fulyl a fully worked rb26 at the end

[datsqik]

Have you had anyone who knows what they are doing have a listen to it first as it may not be internal. Do you know what detonation sounds like?

[GTRgeoff]

Regardless of whatever else needs to be replaced, the labour should be firm and that is where just about everyone gets stung. They can show invoices for parts, but most of the cretins will just gouge for the labour.

Talk firm prices right up front, not after they get the car in the shop and can extort you. Any adjustments can be made later through consultation and in writing.

[Evocoop]

Are you sure the rattling is not just detination. either way, if it keeps doining it you'll be rebuilding it soon enough. If it were bearings at 9 grand you'd be picking shit up off the road.

[pism]

yea i dont drive it any more lol it definatly is somethign serious its louad a fcuk , waitin for some one to come have a listen this week i dont drive it to 9k lol just once to see where the limiter was n it went into red lol im like wtf then limiter hit n slowed it down thing is it drives perfect n no loss of power :S just a loud tapping noise when i get toabout 3grand then slowly goes away after that ? :S

[pism]

i read sum on here that some one had a stuck valve or sumthin n was getting the same noise so who knows , the car is straight from japland so i knowi should get it tuned for our fuel n find out what exactly is in the engine lol

Edited August 19, 2007 by pism

[Evocoop]

i read sum on here that some one had a stuck valve or sumthin n was getting the same noise so who knows , the car is straight from japland so i knowi should get it tuned for our fuel n find out what exactly is in the engine lol

If you have a valve sticking then it won't idle nice. Just had dramas with that on a mates 26. Does the noise happen when cruising at 3000 or only at wide open throtle??

[pism]

when cruising i dont think it does it much when u plant ure foot or maybe its just to loud to hear ? idles fine i think i havent noticed any thing at idle

Edited August 19, 2007 by pism

[Evocoop]

when cruising i dont think it does it much when u plant ure foot or maybe its just to loud to hear ? idles fine i think i havent noticed any thing at idle

I think it's gotta be detination. if it was bearings it would still do it at cruise. Knock a heap of boost outta it. Like back to 8 pound or whatever is stock and see if it still does it. Or take some timing out just by moving the crank angle sensor. Probably just your jap tune trying to run on our fuel and conditions. It's fairly commen. Mine came in with an IMPUL ecu in it and it was useless. Too agressivly timed for ozzy conditions.