Noise Problem

bearing knock is normally worse when hot, because the oil is thinner or my thinking wrong?

You thinking right. Piston slap is louder when the motor is cold because the piston is smaller when cold.

Gary57 wrote:

You thinking right. Piston slap is louder when the motor is cold because the piston is smaller when cold.

yeah my car sounds like a friggin tiger ready to unleash itself on the streets when its cold!!!

but i heard they making new pistons with little ball bearing in the skirts to even out the pistons travel!!! not sure about it though, just a rumour so far!

of you buy CP pistons like me which doesn't really have much pistons slap... Forgies without the slap

why yours different?

how do they take the slap out of the forgies?

alloy concentrate or something like that...

my alloy is also concentrated, so i dont get it. i say this cos i reckon all the little bits are squished together during the forging process???

Vlade wrote:

of you buy CP pistons like me which doesn't really have much pistons slap... Forgies without the slap

I'm gonna get Arias forged pistons though, is that also good? Where did you buy the CP pistons and how much were they?

S13- S14 Conversion wrote:

Vlade wrote:

of you buy CP pistons like me which doesn't really have much pistons slap... Forgies without the slap

I'm gonna get Arias forged pistons though, is that also good? Where did you buy the CP pistons and how much were they?

a more important question is "how long did they take to get to SA?"

veecee wrote:

S13- S14 Conversion wrote:

Vlade wrote:

of you buy CP pistons like me which doesn't really have much pistons slap... Forgies without the slap

I'm gonna get Arias forged pistons though, is that also good? Where did you buy the CP pistons and how much were they?

a more important question is "how long did they take to get to SA?"

Probably because he had to bore the engine and they had to custom make his Pistons, I think

but, uuuh, i had to custom bore the block to fit my pistons???

How big did you go VC....I went 40 vel....I understand 60 is almost the limit our blocks can go.....

you know me... i always say:

GO BIG OR GO HOME!!!

well... i sometimes always say it.

actually, i hardly ever say it. oh well.

i went a mm oversize!!!

good luck on finding 60th 😮

Ok so you(VC) also went 40 fel...20fel is 0.5mm....ok....so the quistion still beggs....how far can our blocks go....anyone....that is taking into consideration that you still want it dependable....

i dont think much further than 40, but you could always resleave?

Not sure but you don't find parts past 40th so I guess 40th

So if I go 20 fel over size....can I still use standard rings....I know more then you need but is it neccesary for 0.5mm over size

Forged pistons slap because ppl run HUGE bore clearances because u had to in the old days which in this day and age are not needed.

"Custom boring" Does this mean bore the block to suit the pistons? I thought that was the only way to build a decent engine.

Remove engine to fit Arias pistons and overhaul it later? Did I understand this correctly? Why doesnt it make any kind of sense?

The Calibrator wrote:

"Custom boring" Does this mean bore the block to suit the pistons? I thought that was the only way to build a decent engine.

aaaww - are you being nice, calibrator? see that guys, he thinks i have a decent engine!

i just hope you not being sarcastic!!!