VVT-i?? Cams upgrade, VVT-i + Cams Options

[west_minist]

Hi all!

I think that I have mess up.

My Mechanic have a Gen 1 4AGE 20v Silver top with upgraded 264 cams with VVT

He stated to me that he still have vvt. VVT is in this case is either on or off. VVT-i is variable VVT.

Now if what he stated to me is true(which I do not have any doubt), that means that you may not lose vvt-i if you have upgrade your cams Maikl!

His cams was purchase for the 20v. I do not know if there are from Todaracing or TRD, by there cam from Miami.

I will try and see how the VVT setup works in this case tomorrow.

Just did some research, and it may seem right now that toda offer cams for VVT system.

In fact, with further research, VVT and VVT-i is in the VVT controller. But here is where the problem can arise.

Qoute from Bill Sherwood (http://www.billzilla.org/vvtvtec.htm):-

"The early VVT system was relatively simple, ie, at a specific rpm (~4400rpm on the 20 valve 4AGE's) the computer signals the OCV to open, this lets oil pressure go through a special gallery in the #1 inlet cam bearing, through the centre of the inlet cam to the VVT pulley. There's a small piston in the VVT pulley, and once it gets enough pressure behind it, it starts to move outwards, causing the outer part of the pulley to turn in relation to the inner part, due to the helical spline that guides the piston's fore & aft movement."

So if you purchase a cam not design for vvt, good bye vvt, but if you buy a cam enable vvt, you are in luck

So Maikl, there may be some hope for you.

Looking at todaracing, you can get cams with vvt.

My mistake was that once you go to a big cam, you would want to dial in the HP and torque for you driving habits or where there just occurs at their max. If you use a Cam Gear, you will lose vvt, vvt-i.

So maikl, http://www.todaracing.com/products/toyota/..._3sg_specs.html

264 would be good for you. Idle a little rough

This post has been edited by west_minist: May 18, 2003 - 9:00 PM

[west_minist]

I have also contacted Jun on this matter.

Can you check out your cam profile for your engine again other 3sge including the the ST185 and the ST205 3SGTE?

This info would help.

Toda responded to me but I need more info from them.

It seems that there offer cams for the old 3sge and as usual do not want to commit to the 94+ gen and up.

Ok, here is email1:- "Thank you for your e-mail and interest in TODA Racing. Our 3SG parts are only for the older 3SG(T) engines. We don't offer any parts for the newer 3SG Celica engines. "

The 3SG(T)= 3SGE & 3SGTE

I have sent him what year up to that he offers. From what I have been reading, the heads are the same. The 98 Head came out with vvti and the Black top came with VVT-i on both cams.

We just need to confirm if the cams have the same dimensions since we will not be using vvt.

I have also ask him if we can return unsed parts.

If you want, you can order a 264 and see how it looks. I am waiting on JUN since there are more up to date in there parts.

Also, you can resell them on ebay if there do not match up properly. That would be a better bet

If not just be patient. We want to do this right. If you go ahead, we can add this to 6gc for cams that work with the 3SGE 98+

Check out this

Ivan Tighe Engineering Pty Ltd
t/a Tighe Cams
225 Montague Rd
West End Qld 4101 Australia
A.B.N. 46 009 747 139
Tel (07) 3844 4283 Fax (07)38463662

Internet: www.tighecams.com.au
Email: sales@tighecams.com.au

I will email them now.

This post has been edited by west_minist: May 18, 2003 - 8:56 PM