clutch vacum

[70DDZ]

im goin from 2.8 to 4.2 and the clutch on the 4.2 has a booster on the clutch master cyclinder and the 2.8 didnt can i block it or do i need to get the booster

[chunderlicious]

youll need it. get a clutch master from a 4.2 petrol or diesel. also make sure you have the bigger slave cylinder. I forget the size of it but there is a 5/8th and amd 7/16th i think

[chimpboy]

Not only will you need it, you'll really like it too.

[Clanky]

I just did that conversion and went for the vacuum assist clutch. Nice to use.
You will need the following to do the whole job:

Master cyl PBR JB1979 or JB1774 (same cyl but different reservoir - both fit) $100
Slave cylinder JB 4198 or JB4257 ( exactly the same part) $50
Vacuum booster unit (make sure you set the rod lengths before the install) $50
Steel pipe from master to slave cyl $40
Flexible hose from steel pipe to slave cyl Nissan part -30855-01J10 $50
Vacuum hose piece to clutch vac unit $20
I used the slave cyl pushrod from the 2.8

I just did this conversion on my GQ. If you need any more info on anything else ask away

[Clanky]

Forgot to mention that the petrol and diesel vac boosters setup are exactly the same. Makes shopping a bit easier

[70DDZ]

thanks people very helpful