[MYZOOK]

Hi All,

I’m just in the process of getting everything sorted for my GTI conversion in my Sierra. I will most likely be putting a small turbo on it to bring the power band back down to a bush friendly level.

I’m not after huge power and will be more than happy with roughly 70-90kw’s at the wheels.

Does anyone know of a good sierra clutch kit that would suit ?

I’d prefer not to go down the brass button path as I want it to be user friendly in the bush.

Any help would be much appreciated.

Cheers

[BlueSuzy]

Just a heavy duty should do it? Even a new stocko one? My suz on 33's with a 1.6 with a new aftermarket clutch still lights up all 4 wheels on dirt with a rear locker no problem. (2yrs later )

Mate had a heavy duty with a 1.3 and was way too hard on the pedal. Like really tempemental and grabby similar to a button.

[zuk85]

im just a tad confused u said u want to bring you power back to bush friendly but already the gti motor is prolly 70kw???? why would u need to add a turbo? mabey just some cam mods and exhuast should see u at 80kw i heard upgrading the clutch can put alot of strain on the clutch cable???

im not trying to deter you from a turbo or anything just confused as to what u want

[MYZOOK]

Hi Mate,

I want to bring the "Power Band" back down to a bush friendly level for 4WDing..... The GTI Engine "Power Band" is much higher in the rev range than the Vit and Sierra motors. (4000-7000rpm as opposed to 2000-5000rpm)

The plan is to add a small turbo that will provide full boost by roughly 2500rpm (Probably a CT9 of a Starlet Turbo). Although the small turbo will run out of puff at around 5500rpm it doesn't matter as I'll happily lower the redline from 7500rpm to probably 6000rpm for reliability reasons.

This should bring the "Power Band" back to around 2500-5500rpm which will be much friendlier in the bush.

[Fatzook]

Hi Mate,

I can't help but think you are shooting yourself in the foot here.

Why go to all the effort and expense to move the 'power band' of a motor that is designed to make its power up high in the rev range, and then cut the rev limit back to prevent it from revving?

And if you are going to the effort of boosting said motor, why not supercharge it and make boost off idleinstead of half way through your new rev range?

And where did you get your 70-90rwkw figure from? have you driven a sub 1 tonne sierra with 110-140kw at motor before? I can't imagine that would be too usable in the bush unless you geared the shit out of it and put 35"+ tyres on it, and there goes your road going ability.

If your only prerequisite for this conversion was to do something different, I'd say go for it, but for the reasons you have stated, a simple G16 conversion would perform much more reliably in the bush and give better torque ( which is WAY more important than power) .

Just my opinion.

Cheers
Peter

[steak_knife]

X2 on what BlueSuzy & Fatzook said, If you realy want Gti & down low power, put a 1.6 block under the Gti head.

Easy`r to go G16bb 12v tho.

[MART]

Standard clutch when I had it , main factor is gearing , if the gearing isn't right the clutch will have to be ridden , most zuks have been modified with some sort of tyre upgrade and is much easier with a standard clutch as heavier duty one's tend to snap on harder , Cheers Paul.

[ninjadaniel]

id say a standard clutch would do the trick-

you might be better spending your money on some reduction TC gears instead of turbo/supercharger (personally i dont like the idea of driving a red hot turbo into cold water)

[LAY80N]

Another vote for gearing. I have a ancient standard clutch in my zook, have wheeled the piss out of it, and it still grips etc as it should. Will smoke both rear swampers on the road if i feel like watching $$$$ go up in smoke If you gear it properly you will be able to crawl without touching the clutch and it will be in the motors sweet spot without needing to turbo/SC the motor. The other advantage of a standard clutch is you can ride them a bit if you have to, heavy duty clutches are more on/off. And if you do kill it, the cost is bugger all and it takes about 1.5 hours to change a clutch from start to finish.

Layto....