How does your Cup sound at full revs

[SideShowBob]

Just curious really, I dont think its a prob, but mine makes a bit of a screachy noise when it gets up to around 7kRPM, not like its about to blow or anything, but a wierd engine noise.

Its fine up to this point, and only becomes apparent when really pushing on and reaching the upper limits, but is a little worrying, as dont wanbt to be doing it damage.

Difficult to describe the exact noise, but its a definite change in engine tone, and is kind of screachy, anything to be worried about???

 

[Cuppy 172]

Get the R-sport chip and hear the engine scream at 8000 rpm, its great

 

[BenR]

its not the best balanced engine, they could of done much better. So it does sound a bit tense up there yea.

 

[CooperS-Boy]

What power does the R-Sport chip put the Cup up to? Revs to 8K!!

 

[Cuppy 172]

I will let the technical guys/girls sort the power gains out, sorry but the r-sport chip lets the cup rev to just under 8K

 

[ChavyBoy]

Quote: Originally posted by CooperS-Boy on 08 August 2003

What power does the R-Sport chip put the Cup up to? Revs to 8K!!

It might push a little more BHP but the torque drops off around 6750rpm anyway.

 

[paddymph]

yeah what kinda benefit are you supposed to get from raising the rev limiter?

 

[y0z2a]

the airbox whistles on the cup... thats why is sounds funny up top.

 

[BenR]

one of the real benefits is that you might not have to shift mid corner whe you least want to.......

 

[SideShowBob]

Oi, enough of this thread jacking with R-Sport chips and things!!

It really doesnt sound like air whistle, more mechanical, although it would be rare to rev that high anyway.

Anyone else noticed it? if a few people could try take their Cups out tonight and take them to 8kRPM, then you can let me know cheers.

 

[172nightrider]

Coule it be the engine PINKIN...... i think mine does the same. I got the missus to raw past me on foot and it definatley sounds dodgy.....

Any ideas and is it damaging the engine?