Safe to follow the Z22SE cam-chain guide for a Z22YH?

Moogers

Hi,

So I and Dad have been working on my sisters and her boyfriend Vectra C for a while now, the whole engine had to be replaced cause we believe the chain had jumped and messed up... everything. Literally everything, there were like 2 valves that were in decent condition everything else that could have broken was broken but that's irrelevant at this point.
Anyways we decided to replace the timing chain and tensioner on the 'new' engine, but I've been having a real issue trying to find a guide or diagram of how the sprockets are supposed to be lined up (and to what torque we need to use). I've been told the SE and YH engine are almost identical and I read on one of the stickies that only difference is the exhaust cam sprocket but like the title says is it safe to follow the rest of the guide? Including the torque specs? Anything we should keep in mind regarding the exhaust cam sprocket?

Also, I found this which I believe is the SE engine. We're new to Vauxhall/Opel engines but it looks really similar to the YH.

Thanks in advance!
-M

KevinH

Looks like a pretty good guide - the torque settings are the same for the Z22YH engine.
Also have a read of this guide (if you haven't already): https://z22se.co.uk/threads/how-2-fit-cam-chains.10042

The Kent Moore special tools are not necessarily needed and cost a fortune - there are links on both chains which are coloured to help alignment when fitting. Make sure you fit a new balance chain kit as well (KM-6077 is the pin that holds the balance chain tensioner which comes with a new kit). I recommend fitting GM genuine kits as they fit well, last longer and saves doing the job again in a year's time.

The guide you linked states 'Press tensioner rail briefly against tensioner to unlock tensioner plunger' after fitting the timing chain tensioner to activate it, but most of the guys on this forum who fit chain kits fit the newer Z20NET tensioner (which now comes in the kit) pre-activated which does make it more difficult to screw into the head but ensures correct operation.

One last thing when fitting the timing chain is to ensure that any slack in the chain is towards the rear, so that the tensioner takes the slack up and will reduce the chance of the chain jumping a tooth on the crankshaft sprocket.

Hope that helps 🙂