Cylinder Liner Types / Matching Pistons...

[bacardincoke 48 1 Cars]

If I've understood correctly there are, (or were) for want of a better word, 2x types of cylinder liner?

 

I've read (Autodata) of them referred to as type 'A' and 'B'.

 

I'm presuming I've type 'B', (both liners and matching pistons) as pictured below.

 

I understand one type projects further above the block than the other, but it's not clear what was the reasoning / purpose of providing a choice?

 

I'm also presuming you must ensure new liners match the existing piston type, eg. A + A etc.

 

So far it seems that current day liner offerings for the XU9JA come in just the one flavour and don't make any differentiation / reference to there being potentially a choice of 'A' or 'B'.

 

Plan is to send the block off for a rebuild, could of course leave everything up to the guy to source adding to the time/expense, but from previous experience another option is to send him the bulk of what he needs along with it.

 

Just looking some clarity.

 

 

[SRDT 232]

A, B and C should be related to the bore diameter. Liner protrusion changed on december 86 with new torx head bolts, new washers, a new headgasket and a new tightening method.

You can use the new parts on an old block and vice versa but you're not supposed to mix and match.

Now liner protrusion was 0.08 to 0.15 at first then 0.03 to 0.10 so liners in the narrow 0.08-0.10 range could do both in theory.

Edited October 27, 2025 by SRDT

[bacardincoke 48 1 Cars]

Thanks... so the plot thickens and there's a 'C' as well!

 

With the markings in my images, would it be likely the liners and/ or the pistons are possibly the originals?

 

Even if not and they have been replaced, it seems to have been like for like (if the measurements are anything to go by) so thankfully no additional complications to contend with.

 

 

 

 

 

 

 

 

 

 

 

 

 

[Leslie green 159]

I found pistons and liners complete with rings already fitted direct from the Peugeot museum were not much more expensive than liners alone in  the uk from a well known supplier when i was looking for my 1.9 , changing the pistons though is a complete ar*e due to the interference fit on the gudgeon pins . I thought I had good liners that came with a block, they looked brand new but had deep vertical scores when cleaned up.

Edited October 27, 2025 by Leslie green

[bacardincoke 48 1 Cars]

Really tempting fate, but at this stage it's looking like the existing pistons thankfully won't need replacing... famous last words!

 

Does look like a competively priced package though.

 

Now that I'm back to sourcing lists of stuff (and coming from a VW background) it's disappointing, but not really a surprise, to see the main UK Peugeot vendors marking stuff up to the extent they do.

 

I'm lucky to be time (if not money) rich and can use that to save quite a bit... Autodoc's been good to me over the years, as long as you're in no rush and prepared to wait them out for price drops.

 

Ordered Goetze liners tonight at £26 each with matching ring sets for £11.00 each / free post... what started out as a misting shock absorber is escalating quickly, every penny's starting to count!

[Leslie green 159]

Thats cheap and goetze is a good brand.

[bacardincoke 48 1 Cars]

Had them on my wish list for a while, price went up and down quite dramatically, would change daily.

 

Likely telling you what you already know, but for anyone not familiar with Autodoc there's a couple of moves that'll save you a fortune.

 

Use the app., not the main site... prices are much, much less, don't know why they do it, but it's always been that way.

 

Have a wish list, makes it simple to watch the price fluctuations and easily move things to your basket when the time comes.

 

Logging in regularly earns you small bonuses, but they can build up quickly, do it for a month and can be worth an extra £10.00+ off at checkout.

 

Their day seems to be from 11pm to 11pm, if there's something you're after and the price is right, be aware it'll likely only be like that between those 24 hours.

 

Having said that have seen prices occasionally jump midway through the day too, guessing maybe their algorithims are picking up on an increase in orders, just guessing?

 

The biggy is your coupons tab, they'll add them without you even knowing.

 

Used a 5% one for the The Goetze order, it got just over £8.00 off the already low prices and it's already been replaced by another.

 

If you can wait, build up your order to over £110 and qualify for free post (normally £8.45 to the UK).

 

Sometimes they run random promo's, the one for free post can be useful... means it's practical to get the small stuff that'd otherwise be too expensive when adding the £8.45 / or waiting to include it in a bigger order instead.

 

Been using them for donkeys years and yes there's been the odd hiccup (mainly early on when they were involved with Hermes/Evri), but DPD seems to be delivering for them nowadays and all good todate. 

 

Not going to name, names but got some stuff from a UK supply recently who's mentioned regularly on the forum, came with an Autodoc label and twice the price!

 

 

[DamirGTI 358]

Some liners data :

[bacardincoke 48 1 Cars]

Cheers... handy book that!

 

So in a similar vein (as with the head gaskets), the 3x different types that were originally available have become distilled down over time to a one size fits all with the latter day equivalents, judging by the absence of any reference to them when checking specs... as long as you don't mix'n'match old / new and A's with B's / C's etc. etc. (which was, as Baptiste says, as equally applicable back then anyhow).

 

I'm likely being thick, but does '⌀ A' in the diagram denote the outside diameter (97mm'ish) and not the bore (83.0, 83.01, 83.02mm)?

 

Anyhow, if you ignore that bit, the Goetze ones I've ended up with match all the above... Peugeot always seem to manage to make me work hard, brain's still in VW mode most of the time (probably just that I'm still conditioned to their way of describing / doing things), likely take a bit more time adjusting, but got there eventually... cheers.

[SRDT 232]

Concerning A, B or C bore class liners it's likely better to have 4 of the same kind but you probably won't see the difference on a street engine.

As for mix and match with liners and pistons Gr.N engines had C class liners with A class pistons.

[petert 630]

I use to always look for C pistons (the biggest) in Mi16's, as I could hone the liners and still have an acceptable 0.002" of clearance for racing.

Edited October 29, 2025 by petert

[DamirGTI 358]

On 10/28/2025 at 6:52 PM, bacardincoke said:

 

I'm likely being thick, but does '⌀ A' in the diagram denote the outside diameter (97mm'ish) and not the bore (83.0, 83.01, 83.02mm)?

 

Inside diameter ! 

Like on iron XU10 blocks without wet liners , there was +0.02mm bore block variants from the factory ..

 

It's been a while since i've seen any letters on the liners , as most of the liner tops where discolored from age , cleaning , rust etc. ..

 

I've mixed them along with the pistons and as said , no issues really , no piston slap nor piston ring sealing problems ...

Even made a few experimental blocks with pretty worn liners on the thrust sides (with ridges on top of the liners) , just de-glazed and those too went just as good no oil consumption , no smoking , no piston slap either - very good robust engines ! 

 

New Goetze liners where in 83.0mm size , good quality no complains . 

 

D

 

[bacardincoke 48 1 Cars]

It's the diagram that was throwing me off...

 

But no odds, the liners have since turned up (sods law but I could've got them for about £23.00 each if I'd waited a day or two) and it may or may not be referring to the size / just a coincidence, but as you can see there's a 'B' etched onto the side of each liner, beside the Goetze part number. 

 

 

[DamirGTI 358]

For the aftermarket parts , when buying pistons , piston rings , crankshaft bearings , wet liners an such ... numbers after line - mean size , like 0.00 STD or standard , then oversize in various steps usually + 0.10 , +0.20 , + 0.50 and so in millimeters .

 

Those Goetze liners are 83.00mm , even if they're truly grade B as per OE spec not to worry ! 

 

From what i can see all the aftermarket liners for XU5/9 engines now sold are 0.00mm no oversize available .

 

D