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Vit engine Upgrade

Posted: Mon Jun 25, 2007 9:34 pm
by rosie
Hi all, I have had a guts full of my piece of shit g16b and am looking at upgrades.

Someone once mentioned a commodore V6 in them. I didn't pay much attention at the time but is it possible and how hard are they to do.

What other options are they for reliability and adaptability.

Is it legal to do in Western Aust?

Thanks, Ben

Posted: Mon Jun 25, 2007 9:44 pm
by Gwagensteve
I can't comment on legality, but really commo V6's are an embarrasment. They are a rough and ready piece of engineering, I'd maybe use one in a buggy but otherwise, their pretty dumb IMHO. They're cheap for a reason.

How about an SR20DET/silvia auto/patrol transfer? :cool:

Or 3RZFE (hilux 2.7)hilux gearbox/transfer

Both will offer a meaningful increase in power, a nice strong midrange, but not totally change the characteristics of the car.

They are both going to be more money, but will make a nice conversion.

Even a 4AGZE would be cool- they are super torquey and as there is no capacity increase, should be pretty easy to get legal. Even a GZE will almost double your HP and torque in stock form.

In regard to legality, talk to an engineer NOW, before you get all fired up and find out you can't do what you want.

Steve.

Posted: Mon Jun 25, 2007 10:00 pm
by Eddy
Could anybody object to the zook V6?

Should be relatively easy I'da thought??

Posted: Mon Jun 25, 2007 10:11 pm
by rosie
Their meant to be crap the stock Vitara V6s. I kept getting told to steer clear of them. Apparently there is bugger all power in them and they just drink more fuel and don't like revving.

hmmm, Does anyone do an adaptr for the Lux ones. Toyotas seem to be great as far as reliability goes so they look like a good option.

I just have to find out how bad mine is.

Ben

Posted: Mon Jun 25, 2007 10:14 pm
by Gwagensteve
the 2.0 is a steaming nard of a motor. It's a really compromised install and there are design issues. they can be fixed, but it's a lot of work for the power. (which is ok but not great)

Bear in mind too that the 2.0 v6 vit ran a wider chassis with a differnt crossmember arrangement so mounts etc won't swap across. all up, it is not better conversion than anything else because the chassis changes will make it a real fab effort to get it in- might as well go with a better motor right off the bat.

The 2.5/2.7 is much better and apparently a fairly easy swap into a 2.0v6 but the are $$$$ (or at least $$$$ to get complete)

PS we were looking a Volkswagen Touareg V6 the other day - 3.2 (now 3.6) litres, 190kw... lots of torque - and barely any bigger than a j20A - they have a 15 degree v angle to both banks sit under one cylinder head - it'd go in a Vit easy :D even the exhaust is on the same side (they just look like a big 4 cylinder)

Steve.

Posted: Mon Jun 25, 2007 10:22 pm
by Eddy
Gwagensteve wrote: it is not better conversion than anything else because the chassis changes will make it a real fab effort to get it in-


;) excellent ... an answer at last ... to a question I've asked at least 3 times on here and also on other forums. Thanks Steve!
....we were looking a Volkswagen Touareg V6 the other day - 3.2 (now 3.6) litres, 190kw... lots of torque - and barely any bigger than a j20A - they have a 15 degree v angle to both banks sit under one cylinder head - it'd go in a Vit easy :D even the exhaust is on the same side (they just look like a big 4 cylinder).
:cool: cool ... need to know more on that one ... :D

Posted: Tue Jun 26, 2007 8:20 am
by FullbackNo1
i heard the 4agze are hard to fit into the vitara

Posted: Tue Jun 26, 2007 8:29 am
by cj
I would definitely do a J20A swap over the H20A. Here is a link to putting a J20A in the earlier Vits. http://members.cox.net/aftermarket4x4/2 ... acker.html
The other plus with this is it should be pretty straightforward to engineer as Suzuki offered this as a Factory model.

There are certainly other options but they will involve more work although there may be other benefits that make them more worthwhile for you like power, mod options, diesel etc.

Posted: Tue Jun 26, 2007 8:30 am
by cj
Also I wouldn't bother with the Commo V6 either just from the weight perspective alone. You don't want any more weight in the front end of a Vit than necessary IMHO.

Posted: Tue Jun 26, 2007 8:44 am
by Gwagensteve
FullbackNo1 wrote:i heard the 4agze are hard to fit into the vitara
Why? Looks like there would be plenty of room to me - you can get a GZE in a sierra so I can't see why it woudln't drop into a vitara. Someone on this board has a 4AGE in a vit (a green one) and it looks like it was made for it.

Steve.

Posted: Tue Jun 26, 2007 4:25 pm
by nicbeer
What are u doing to it to warrant a change.

go a rebuild and supercharge the 1.6

also legalness, probs 1.8 or 2L at a guess be max

Nic

Posted: Tue Jun 26, 2007 4:53 pm
by Gwagensteve
This is a good point Nick - CJ's old 1.6 LWB ran some cam timing changes, exhaust and a couple of other small mods and I thought it went quite well.

Having said that, a J20A will be cheaper than rebuilding and boosting a G16, still something I don't believe can be achieved with reliability unless you are willing to throw cubic $$$ at the build.

If a boosted 1.6 is required - 4AGZE would have to be the go.

Posted: Tue Jun 26, 2007 4:56 pm
by nicbeer
Steve- what mods where in there and what did it give in output? better low rpm torque? or other?

Cam timing i am guessing that was with adj cam timing wheels

Nic

Posted: Tue Jun 26, 2007 7:44 pm
by cj
Nic,

I fitted Tri-Y headers (Mugginsmoo has them now for Doof), a 2" exhaust with high flow cat and muffler plus a resonator (to deal with a drone that occurred at certain rpm). I also had Tighe Cams regrind my cam for me and I fitted an adjustable cam gear. Then I had it dialled in on a dyno. The end result with 31's was that it felt more like it used to on stock rubber. It didn't completely overcome the lack of gearing but it was much better on the road and I was happy. It pulled well from low down and had good throttle response. The only thing that still needed attention was the fueling due to the cam profile change. I was going to fit an interceptor to sort this out as there were some holes in the air/fuel ratio that needed attention causing me to back of the max possible power achieved on the dyno for reliability reasons but it fell over :oops: and was written off before I got a chance to do it.

The cam gear came from here and was of very nice quality plus Adam was great to deal with.

http://www.occracing.com/pricing.htm

The cam was reworked by these guys to my requirements. It was not one of the profiles on their site. It took longer than promised but it worked well.

http://tighecams.com.au/cars.htm

Posted: Tue Jun 26, 2007 7:52 pm
by flyinwall
talk to mud4b (on here) about 4AGE/GZE into vitara as i think he did one

Posted: Tue Jun 26, 2007 10:54 pm
by nicbeer
thanks cj. do you still have the profile specs around? and an interceptor ? is this a fuel cut thing or sort of booster thing.

Posted: Wed Jun 27, 2007 7:31 am
by Gwagensteve
Capacitors on the plug wires, one hiclone in each inlet port and a really big magnet on the fuel line :D

Nah - in interceptor is just the generic name for somethng like a unichip- also called a piggyback. You can use it to adjust fuelling under certain circumstances, but not alter the original base map so stuff like cold start is unaffected. They are useful for small adjustments in fuelling due to a small boost increase or cam/timing change.

The intercept the signals in and out of the computer so by reading RPM and load for instance they will add a little bit of length to the injector pulse width to add some fuel... that kind of thing.

Steve.

Posted: Wed Jun 27, 2007 7:33 am
by cj
Nic,

An interceptor is something that allows tuning of the fuelling and ignition timing while still retaining the Factory ECM.

http://www.haltech.com.au/interceptor.htm

I should have the profile code somewhere. I can have a look for you but really what you need to do is give as much information as possible to Tighe about YOUR vehicle so that they can work out the best profile for YOUR needs. See here http://tighecams.com.au/sales.htm for the things they want to know. The more you can tell them, the better the result.