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Z20LET into Mk4 Astra

5K views 7 replies 6 participants last post by  Gsilee91 
#1 ·
Looking into changing the engine in my astra mk4 5dr 1.6 8v spi to a z20let and
am needing a conversion guide or advice on all parts id need to carry out conversion.
Looking into an engine package from turbo chris but will i have to change from 4 stud
to 5 stud hubs or can i retain the original driveshafts? Also would i have to change fuel
lines or are the fine for the job? Anyone on here done this conversion to a 5dr before?
 
#3 ·
will i have to change from 4 stud
to 5 stud hubs
All astra mk4's have big block hubs no matter the engine size or stud patter

or can i retain the original driveshafts?
You will have to use big block shafts

Also would i have to change fuel lines or are the fine for the job?
The fuel lines will be fine but you will have to change the pump in only takes 10 minutes.

Anyone on here done this conversion to a 5dr before?
There is no difference between a 5 or 4 door, Even when doing a conversion to the coupes vans and estates there really is no difference as they still share the same front end
 
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