Mk4 astra gsi.

[paddy235]

I've never known a zlet to be reliable, buy 1 and fit a b204

[turbojolt]

B204 pfttttt mine lasted 3 days

[paddy235]

Ha what caused it?Replacements are cheap the last 9-3 I bought was £120

[turbojolt]

People not using the correct oil. Blocked the strainer

[paddy235]

I've heard all different oil to use some people use 5w30 some say 10w40, a lot of people have recently said they use 10w60

[turbojolt]

I think the most important factor is that you only use fully synthetic oil. People rate these engines so much but no one wants to tell you how temperamental they are is not serviced properly

[TeddyThom]

Oh dear... Where do I start???

First of all, you need to make sure the service schedule is reasonably up to date, if in doubt, replace it...

Mine has had some issues since I've owned it.. Namely, do NOT buy someone elses project. I found out the hard way that there are certain tuners out there, that do not mix with the Z20LET engine... I'm loath to name names, however, seeing as they don't have the issues with the engines that are usually found on here, you need to avoid regal autosport, based in southampton, they have mixed reviews, namely... They make engines go bang. I had a map, running 302bhp (with printout), was lovely at first, leaving things in the dust etc, then as I came to billing a couple of years ago, piston 4 pretty much melted. Burgo will be able to verify this, as he and a few others tried to help me out with a few bits. I ended up changing the engine... Spent a few more bits on the engine and now she is running sweet as a nut.. Just needs a new clutch and then she's ready for mapping again!