Removing VVT from 20v. Advantage or Disadvantage?

[20v_rollaboy]

Also what would be involved in this? New cams or just new intake cam and wheel?

Would getting aftermarket cams give it more rpm but sacrifice low end power?

Would standard ECU be able to handle this? Or go Link?

[big_boy]

if you want to sell your pully let me know very intersted if it will fit my 5M witch it apperently will

[matt dunn]

Also what would be involved in this?

To disable it you can just unplug the VVT solenoid, but why?

New cams or just new intake cam and wheel?

Either,
My 1st race motor has aftermarket cam and just does not power the solenoid.
It still uses the std wheel but if you power the solenoid it just dont make any power.

The second Race engine I have uses a standard cam and does need the VVt working to get a decent amount of power out of it.

Would getting aftermarket cams give it more rpm but sacrifice low end power?

Depends entirely on the camshaft used. They are ground to specific specifications and that's what determines if you need the VVT or not and also if you need an adjustable cam wheel or not.

but sacrifice low end power?

Thats the point of VVT so you can have both.

Would standard ECU be able to handle this? Or go Link?

Once again depends on the cam,
if you go too wild the ECU will not like it.

Matt

[20v_rollaboy]

Thanks for that reply Matt. Are these race engines of yours still n/a or the turboed one in yuor DX?

I am probably going to go aftermarket ecu to remove AFM and it would probably help a bit overall aswell. Then get some cold air up there and free flowing exhaust system.

So would aftermarket cams be the next best thing or porting the head and leave cams as they are?

[matt dunn]

Thanks for that reply Matt. Are these race engines of yours still n/a or the turboed one in yuor DX?

I am probably going to go aftermarket ecu to remove AFM and it would probably help a bit overall aswell. Then get some cold air up there and free flowing exhaust system.

So would aftermarket cams be the next best thing or porting the head and leave cams as they are?

My ones are all turbo application.

Really you need to match your cams to your porting work,
so best to do both at once,
but otherwise, um, dunno.
Not too sure how much gains you can get from either,
but If I was doing it i'd do cams first.

[20v_rollaboy]

Hmm thanks for that. Am contemplating to either keep it n/a and get some moderate power out of it or go the f/i way as so many people these days are.

[spencer]

if you want to sell your pully let me know very intersted if it will fit my 5M witch it apperently will

Are you saying you want to try the vvt pulley on your 5m?

[big_boy]

yep that means i can run 4600rpm power band peak on my cams & have a 2300rpm peak as well of the intake & also a 2200rpm & a 3900rpm peak on exuast witch should work out great

already have the cams

[sergei]

Do you realise that you cannot have VVT pulley on non VVT car without extensive modification of the head (drilling holes, plugging holes, installing VVT solenoid etc..), also the VVT pulley has got bigger seal then non VVT. Also I doubt that 5MGE will have same size pulleys as 20v....

[big_boy]

apperently there the same size & tooth #

& apperently theres not alot involved to fit to my head iv got a guy all lined up to do it for me

[sergei]

apperently there the same size & tooth #

& apperently theres not alot involved to fit to my head iv got a guy all lined up to do it for me

How is it going to activate?

[big_boy]

from a jay car rev kit

[spencer]

This is great dual VVTing a 5m dont know why I havnt done this mod to my old 5m yet

[big_boy]

my only hope is that i can fit both the exuast & intake ones on

[AceSniper]

[frost]

you do know that the 20v only has intake side VVT. AND sergei is right it will need lots of drilling of the head to work because VVT is oil pressure activated not just switch it on buy solenoid. if you know this already then forget my crazy person rant and good luck.

[Loudtoy]

if you want to sell your pully let me know very intersted if it will fit my 5M witch it apperently will

I've got a spare pair of 20 valve cams (intake and exhaust) complete with pullys. How much are oyu keen to pay for them?? Pm me and let me know

[matt dunn]

from a jay car rev kit

Interested to know how you are going to get the oil pressure supply throung the centre of the cam while it is rotating and how you plan to drill the new oil feed galleries thru the head without hitting a water gallery?

[big_boy]

its accually really simple my cams have a hole up the centre of them all ready not a big hole but bigger nuf for what i want they also have a revoveable end plate witch i intend on rinning the thro & in to the cams thro a seal ect then i entend on tapping the main oil gallerey to do this & also useing eletric solinoids powered by the jay car kit i entend on switching them its not as hard as people think on my motor

also Loudtoy i would only be intersted in the VVT-i cam pully/s if you are intersted to split can you please provide me some pics of it & sizes like teeth size OD ID key size