wardy32

hope someone can help a little with the following???

have got a '98 type r which has had a bottom end rebuild only 7k ago but noticed this morning that the engine was knocking/tapping a little until oil came up to temp after that nothing at all and drives superb.

any ideas what this could be???

Jolly Green Monster

iTrader: (4)

pistons slap most likely.. nothing to overly worry about..

Simon

wardy32

piston slap??

so is that causing any damage to the engine???

Jolly Green Monster

iTrader: (4)

pistons is rattling in the bore due to clearances fairly large when engine is cold..

as long as it is a continuous tick / knock matching the rpm and goes when engine warm then it sounds like piston slap.. do a search on here on "piston slap" you should find sound clips.. if it is not matching rpm then it would be something to worry about.

Simon

rigga

iTrader: (4)

Wouldn't a fairly recent bottom end rebuild taken care of the piston slap issue though? New pistons matched to bore size a bit better than the originals that had a tendancy to do it when cold.

Jolly Green Monster

iTrader: (4)

depends whether the pistons were changed, if so which make etc.. the drop in pistons will do it.. most rebuilds won't necessarily replace pistons, depends if there is bore damage..

Simon

butler

Think i have piston slap on mine too. Tried a search for a sound clip but none work, does anyone have a sound file?

big-kev

mate i have a 97 sti and it does the same for about 2mins on a cold start then goes away , you will propibly find it is the cold weather which does,nt help ether but as far as i know most scoobys sound like this
do,nt worry to much
p.s have a good xmas
big-kev

scoobynewbie72

iTrader: (1)

Sounds daft but is it defo from the engine?
I know a few who get a ticking from the gearbox when its cold, once its warmed up it can go away.
hth
Brett

BOB.T

Hydraulic tappets can also make a tapping noise untill they fill with oil.

StickyMicky

mine has slapped from cold for 5 years and has even been rebuilt

nothing to worry about

wardy32

seems like i need to check a bit further into the noise then to make sure but cheers all for the advise..

fingers crossed it doesnt cost too much!!!...yeh i know silly answer its a scooby its gonna cost loads..anyway ho ho ho merry xmas all!!!!

Scoobyslammed

Tappets arn't hydraulic on a ver4...
Forged bottom ends will normally make alittle noise until warmed up... nothing to worry about...
Aslong as it quiter when warm wouldn't worry too much...

Pittys sti

Anyone tried putting Wynns supercharge in with their oil? Ive been told it might make my bugeye sti quieter.

scooby2boo

ive just bought my first scooby and it my first turbo riceburner - im usually a bigblock man, i also have noticed 'ticking' sounds a bit like noisey injectors, dosnt really go away though????? what do you think? from what you all say its pretty normal? cheers for any help

rigga

iTrader: (4)

Ticking noise like noisy injectors?........ poss noisy injectors as they all do that,piston slap is another noise altogether.

Jolly Green Monster

iTrader: (4)

agree, or tappets if early car