How do you change the timing chains of a Nissan GA16DNE?

it is more complicated than changing a Timing Belt

1 make sure to have some jack stands or wood blocks to suspend engine

2 remove a)valve cover (top and lateral), b)put engine on No 1 on TDC, c) mark camshaft as a safety.

3 the guide pins of the camshafts should be at I: 9 oclok E: 12 oclock when viewing from front of engine. Actually Intake is about 8:50 a few deg. below 9.

4 remove engine support that stands front of No1 piston (pasgr. side)

5 be sure to suspend egine safely

6 remove, and, or, disconnect: belts, water pump, chain tensioners (both), damper. drain engine of coolant

7 using blocks or stands to suspend engine (I leaned against the gearbox and I did fine) remove the cross member disconnecting it previously from engine, disconnect the exhaust pipe

8 remove oil pan and oil sump (draining previously)

9 remove, all I mean all the bolts that holds the chain cover carefully they are quite hidden

10 if it is done carefully a few hammering with a heavy piece of wood , it shoud pop off

11 assuming that engine was not rotated (No1 at TDC I: 9ocklok E: 12 oclock), remove both chains an their guides and replace ( new chains, new tensioners, new guides, new chaindrives)

12 reassembly should be in a reverse order taking care to use RTV sealer sparringly in order to prevent coolant or oil leaks.

PS: special care should be taken with the gasket of the cylinder head, when reassembly.

please accept my appologies for rusty English