What is...

ModifiedMadness · Post by **ModifiedMadness** » Sat Feb 04, 2006 11:01 pm

VVT, I've seen it mentioned a couple of times, but having no knowledge about engines I have no idea what it means/is

I've read that you can hear the sound of it?

Can anyone enlighten me?

Cheers

nickpolo · Post by **nickpolo** » Sat Feb 04, 2006 11:07 pm

variable valve timing?

ModifiedMadness · Post by **ModifiedMadness** » Sat Feb 04, 2006 11:08 pm

I did think thats what it may stand for, I just wondered what it does though, and the reason it sounds different.

Redline · Post by **Redline** » Sat Feb 04, 2006 11:20 pm

http://en.wikipedia.org/wiki/VVT

Have a read of that, not a bad little explanation of it.

Del_GTi · Post by **Del_GTi** » Sun Feb 05, 2006 3:23 am

Interesting read. Lots of facts on the site. The stuff about GM is well interesting... being a Vx fan.

andyg · Post by **andyg** » Sun Feb 05, 2006 12:34 pm

Having read that article you should have all the info you need.

In the Polo the VVT starts kicking in at around 3500 rpm, and the valves are fully open at around 5750 rpm. If you listen carefully when you take the car up the rev range, the noise of the engine gets louder and changes pitch over 4k to 5.5k, it sorta steps up a level and you get a slight burst in power. I love that sound

Si_GTi · Post by **Si_GTi** » Sun Feb 05, 2006 3:17 pm

andyg wrote:Having read that article you should have all the info you need.

In the Polo the VVT starts kicking in at around 3500 rpm, and the valves are fully open at around 5750 rpm. If you listen carefully when you take the car up the rev range, the noise of the engine gets louder and changes pitch over 4k to 5.5k, it sorta steps up a level and you get a slight burst in power. I love that sound

I f you listen to mine, the changeover is even more obvious! Above 4k the sound of my new exhaust changes completely

polopowah · Post by **polopowah** » Sun Feb 05, 2006 4:20 pm

something to do with variable valve timing & lift....what i found on google

-Ben-

ModifiedMadness · Post by **ModifiedMadness** » Sun Feb 05, 2006 5:19 pm

I had to go out earlier just to have a listen, I love the sound it makes.

I've heard it plenty of times before but after reading it makes it sound better

As well as high up the rev range, I like it down at 2-3k aswell, I think it sounds quite throaty.

Prash · Post by **Prash** » Sun Feb 05, 2006 6:32 pm

you should hear the vvt with a bmc fitted

ModifiedMadness · Post by **ModifiedMadness** » Sun Feb 05, 2006 6:48 pm

Do they sound anything like the Civic Type R with the BMC on?

Prash · Post by **Prash** » Wed Feb 15, 2006 11:55 pm

dragging this thread up about but...yes is does give it similar sound to a type r, depends how you set the BMC up though

using the standard air intake IMO its not noticable, but removing all the standard piping and putting some nice large diameter piping to the drivers side front arch (where I settled to put mine after trying lots of different places) the sound is glorious. You get the most lovely deep growl down below and the Vtec style (well as close as you can get in a no Vtec style engine) sound at top of the rev range, makes the car much smoother and more willing to rev to, don't think I could go back to having it standard

I might try and get some sound recordings of the BMC, it sounds so good if set up properly

polopowah · Post by **polopowah** » Thu Feb 16, 2006 10:26 am

could you get a pic of your set-up Prash?
cheers

-Ben-

CalvinGTI · Post by **CalvinGTI** » Thu Feb 16, 2006 11:26 am

yea its all about the change of tone of thr BMC

i love its growl that changes intoa ROAR after 4.5k haha :-p

VRrrrrrrrrrrrrrrrrrrrrroooooooooooooooooooM !

Cal

Prash · Post by **Prash** » Thu Feb 16, 2006 11:32 am

polopowah wrote:could you get a pic of your set-up Prash?
cheers

-Ben-

yea sure, will probably be the weekend before I can do it though