Outer Limits 4x4 Board

Hey,

Wondering whats the best way to go for a 1.6 mpfi conv into a sierra.

I can buy a std for $137ish and hd for $200. Will the std be ok with the 1.6?

I am running 31s with 3.9 and 1ltr transfer. A std was ok with the std 1.3 hampster.

Thanks

Nic

My clutch/brake bloke says hd doesn't always mean better.
Sometimes it just means a heavier pressure plate, which ain't too great with cable clutches.
To stop slippage and wear, a good friction rating/type of surface is often more important than clamp pressure.

But I am not 100% sure if I understood this correctly

christover

I have read the same to be weary of the cable clutchs with HD setups.

I believe the cheap one is a PBR one as i have used before.

Nic

nic get 1 of pete that he runs on the gti conversions, thats what im usin on mine.

christover1 wrote:My clutch/brake bloke says hd doesn't always mean better.
Sometimes it just means a heavier pressure plate, which ain't too great with cable clutches.
To stop slippage and wear, a good friction rating/type of surface is often more important than clamp pressure.

But I am not 100% sure if I understood this correctly

christover

I'm not a gearbox mechanic but had sold clutches for 12 years.

Most of HD clutches offered for std vehicles are only an uprated pressure plate with the exact same clutch plate as the std clutch. Once you go to race applications the sky is the limit with twin plates, solid plates, ceramic puck plates and carbon fibre plates just to name a couple.

If you are talkin PBR, they make RPM series which are a std clutch plate and bearing with an uprated pressure plate that gives on average 35% more clamp load.

They do do a NEW series called 4 Terrain which are supposed to be engineered with the 4x4 in mind. Never sold one I'm outta the game now and they are still only new. But I think they have an uprated pressure plate and a clutch plate with two stage friction material which is supposed to help with the fade that can sometimes appear with heavy clutch use due to 4x4in.

Heres a link, have a read if you like

http://www.clutchindustries.com.au/rang ... clutch.htm

My suggestion like bazooked's is to speak to someone who's done the conversion and knows what they are talkin about and has done the testin already.

The last thing anyone wants is to limp home in the middle of a 4x4 weekend with a smoked clutch

I blew my 1.3 clutch apart with my 1.6, too mutch torque so the springs bottomed out on the plate get one that can handle the torque

Gone for the HD one and getting the flywheel machined.

Nic