Head gasket replacement, piston liners

[wallis07]

Hi guys.

Looking for some advice if somebody can help.
I've got a 1984 T25 with the 1.9 DG engine in it. I've just removed the engine to replace both head gaskets. When i was removing the second cylinder head, one of the liners came up about an inch with the head (i had a screw driver between the head studs to prevent this but obviously missed ).
The liner has tapped back in no problem but i'm wondering having disturbed it, if this could cause an issue?
I'm not that familiar with these engines but i would assume there's an O ring on the bottom of the liner that seals it from the crankcase?

If anyone with any experience of this could give me their opinion that would be great.

Thanks. Luke.

[davidoft1]

I would personally pull it out and all the others and replace the seals, it’s actually not to bad a job

[wallis07]

Thanks for the quick response David.

Presumably i could just slide the liner half way up the piston and change the O ring? Without having to take it off completely?

[itchyfeet]

I would personally pull it out and all the others and replace the seals, it’s actually not to bad a job

this ^^^

even if it had not moved the lower seal is old and past it's best, o rings get compression set where they are no longer round.

There is always loads of rusty dirt down the bottom of the liners and once the head if off and the pressure off the dirt will get into the seal.

[itchyfeet]

Thanks for the quick response David.

Presumably i could just slide the liner half way up the piston and change the O ring? Without having to take it off completely?

no pull liner up and remove piston pins

https://club8090.co.uk/forum/viewtopic.p ... 2#p8156269" onclick="window.open(this.href);return false;

[wallis07]

Pistons out it is then!

Thanks for the advice and link itchyfeet. I know what i'll be doing this week after work now .

[itchyfeet]

Get some pics up of your work if you can, it helps inspire others and we can help you as you go. A pic says 1000 words so we can spot things you don't.


You can add pics here and copy BB code link then paste in you post on here
https://www.techpowerup.org/upload" onclick="window.open(this.href);return false;

[itchyfeet]

[wallis07]

I'll see what i can do itchyfeet!
That's a very useful picture. Thanks again.
I'll get after it this week and post back my progress.