Quick Question R33 Gtr Does It Have Vtc?

[GTSBoy]

Well, you'd want to go with a brand new actuator, rather than something secondhand. You've probably all seen the pain and anguish that SR20 owners go through when their VTC actuators shit themselves. Nothing available 2nd hand because they fail so often, and new price ex-Japan + 3 week wait is not pleasant either.

You could possibly do something with a $2k budget and a new actuator included. You'd not be able to do it without a capable ECU though. So that would add cost for some people and stop others from doing it at all.

[scotty nm35]

As long as the actuator is robust, such as the Neo one, I can't see why a second hand assembly can't be used. You don't see Neo's smashing valve gear...

The VCT window can be actuated by many products on the market can't it? Not a big task anyway.

Making sure you have the valve clearance would be the big stress.

[GTSBoy]

As long as the actuator is robust, such as the Neo one, I can't see why a second hand assembly can't be used. You don't see Neo's smashing valve gear...

The VCT window can be actuated by many products on the market can't it? Not a big task anyway.

Making sure you have the valve clearance would be the big stress.

I thought all the talk was about using VQ style actuators to gain the full VCAM experience. If not, then using RB issue stuff would probably be OK. But then I would just save the pain and use a Neo head.

[Ben C34]

Someone needs to do the unmentionable and put a neo head on an rb26.

Higher comp and vct with e85 would be awesome.

There had been mention the neo head can suffer shim spitting at high revs but that can be sorted cheaper than fitting vct to a 26 head surely?

[sucram]

a switched set up wouldn't be hard, RB VCT solenoid and inlet actuator, tee the oil pressure sensor for oil feed, rpm activated switch. Hardest part would be blocking the oil feed for the front cam journal and routing and drilling for the solenoid in its place. You would want a TIG on hand just in case you drill in the wrong spot!

continual variable would be a challenge, since you need to add cam position sensors, a better solenoid (PWM), actuator and an ecu that not only has target cam position, but that can actually control it and do so within 10ths of a second

[scotty nm35]

continual variable would be a challenge, since you need to add cam position sensors, a better solenoid (PWM), actuator and an ecu that not only has target cam position, but that can actually control it and do so within 10ths of a second

It's been done with a Haltech already, I am sure most high end ecu's could easily manage it. You would want a good tuner though.

[SS8_Gohan]

Someone needs to do the unmentionable and put a neo head on an rb26.

done, Racepace, many moons ago. No E85 at the time though.

I have my HKS Vcam controlled by my Link, so no HKS electronics, it's a bit of a mongrel (like me! lol) but it's a sweet setup. There is a hall sensor to detect cam position.

I basically gave a bunch of parts to Trent and said "fix it fix it fix it!"

[scotty nm35]

Ah, it was yours I was thinking of Daniel, I thought you had a Haltech for some reason.

I seem to remember Trent being worried about valve clearance, do you know what degree advance/retard you ended up getting out of it?

[SS8_Gohan]

yes, obviously a lot of care was taken with that as Vcam was added post build.

I have the type a, step 1 or whatever the first 'stage' Vcam is as my pistons are supposedly N1's, so effective stock size (?), meaning advanced/retard options aren't maxed out to what the other Vcam options can do

[zebra]

Someone needs to do it to the exhaust side as well

[Piggaz]

Someone needs to do it to the exhaust side as well

HKS did that too. I've got a picture somewhere. Was never sold to the public though

[R31Nismoid]

Someone needs to do the unmentionable and put a neo head on an rb26.

Higher comp and vct with e85 would be awesome.

There had been mention the neo head can suffer shim spitting at high revs but that can be sorted cheaper than fitting vct to a 26 head surely?

There are at least two motors getting around that have had it done... and that was over 2 years ago now. So likely there are quite a few more now that have gone down this road.

From memory the hardest part is an adaptor to get the RB26 intake into the NEO.

So yeah, definitely not unmentionable or uncharted territory

[Ben C34]

There are at least two motors getting around that have had it done... and that was over 2 years ago now. So likely there are quite a few more now that have gone down this road.

From memory the hardest part is an adaptor to get the RB26 intake into the NEO.

So yeah, definitely not unmentionable or uncharted territory

Cool.

As usual someone has always done whatever is thought of!