Peugeot 205 XR

Author
Discussion

HustleRussell

24,781 posts

161 months

Wednesday 1st September 2021
quotequote all
First step is head off.

TBH Judging by the screw-shaped impression on the top of the piston from the borescope, you may find that the cylinder head is damaged and a replacement is necessary- but you’ll be in there by then and you’ll want to get it running again smile

carinaman

21,370 posts

173 months

Wednesday 1st September 2021
quotequote all
The valves for £30 was one side, but there were other sets around that price on eBay. There are sets of cylinder head bolts at £20 too.

Once the head is off get the mating surface checked by a garage or head specialist? It's ingested a screw rather than overheating and breaking the head gasket seal so may not need checking.

If I had a TVR and a girlfriend I'd probably get shot of it, but then I am the person who didn't learn as a youngster and sheared the tops off of a cam cover bolt and breaks things trying to get access to a battery to get it out to charge it.

HustleRussell

24,781 posts

161 months

Wednesday 1st September 2021
quotequote all
TBH it might just be the inlet valve which is bent and a brand new shiny spanking valve from Peugeot will be I predict £18+vat

carinaman

21,370 posts

173 months

Wednesday 1st September 2021
quotequote all
£40 for gaskets and cylinder head bolts:

https://www.ebay.co.uk/itm/114793176534?fits=Car+M...

Place in Farnham resurfacing cylinder heads for £50:

https://www.ebay.co.uk/itm/263690136155?hash=item3...tongue out4MAAOSwr-Bb4y5X

TEKNOPUG

19,025 posts

206 months

Wednesday 1st September 2021
quotequote all
I can't see it being more than a few hundred quid to have the head rebuilt for you with new valve and a resurface. Then it's just gasket and head bolts. Fitting is the reversal of removal....

HustleRussell

24,781 posts

161 months

Wednesday 1st September 2021
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Ate it’s own valve seat

thiscocks

3,133 posts

196 months

Wednesday 1st September 2021
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eek New head time smile Should be easy enough to find a 1.4 engine or head on ebay or owners club. Likely you wont need to worry about valves then if its in decent order. Could just get it skimmed, new head gasket and bolts and put it on.

HustleRussell

24,781 posts

161 months

Wednesday 1st September 2021
quotequote all
That head was repaired actually! However, if it had been a standard Peugeot 1.4 head it would’ve been considerably more economical to source a used replacement…

thiscocks

3,133 posts

196 months

Wednesday 1st September 2021
quotequote all
What head is it? Sorry must have missed it in the thread. Assumed it was a standard TU3 single carb one.

CarlosV8

767 posts

173 months

Wednesday 1st September 2021
quotequote all
Twenty odd years ago I wasn't brave enough to rebuild the engine on my 205 XS so I sourced a replacement engine and swapped it over. Wasn't too difficult and was done over the course of a weekend on the driveway.

A few years later the wife and I did the valve stem seals and head gasket on her 106 XSI (basically the same engine) and although it was a bit more involved than the engine swap, the Haynes BOL provided the basics and the rest we figured out as we went along. Again, a weekends worth of work and it was sorted and running better than ever.

In summary, these are not complicated engines. Removing one is not a difficult task as long as you are systematic in your approach (it's essentially a case of removing a few pipes, wires and bolts!). And even a top end rebuild is doable for an amateur mechanic, especially as you now have experience of the cambelt.

darkyoung1000

2,051 posts

197 months

Wednesday 1st September 2021
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Another vote to go for it here! Between thiscocks' thread on the AX Sport and mine, there are plenty of photos of TU1 and TU3 engines in pieces for reference!

I'd never done anything quite so involved before this year when a head gasket repair turned into a full head fettling session!

Cascade360

Original Poster:

11,574 posts

86 months

Thursday 2nd September 2021
quotequote all
So something else to ponder. On the advice of someone on another forum, I put a drop of oil down Cylinder 3 and re-ran the test. Improved to 11.2 bar.

Seems to suggest that bore or piston wear is the cause rather than a bent valve - http://www.peugeot205.ru/peugeot205-43.html.

Does this change the prognosis?

HustleRussell

24,781 posts

161 months

Thursday 2nd September 2021
quotequote all
Not really I’m afraid, a drop of oil would similarly improve the other three cylinders so the disparity would still remain.

Anyway I’d take a bent valve over bore / ring wear. Just whip the head off!

Cascade360

Original Poster:

11,574 posts

86 months

Thursday 2nd September 2021
quotequote all
It does run!

http://imgur.com/gallery/e3YqfWR

There was a definite rattle on start up and a slight thrum of an odd noise in the background after a minute or so.

carinaman

21,370 posts

173 months

Thursday 2nd September 2021
quotequote all
Well done on not killing it. Nice big cam cover bolts.

Cascade360

Original Poster:

11,574 posts

86 months

Thursday 2nd September 2021
quotequote all
?So I decided to get it off my drive and take it for a spin. 

At first I wondered what on earth I'd broke, it was making some very odd noises at low speeds.  Turns out front wheel bolts were only finger tight ... :O

After that ... it drove beautifully.  Still won't idle with the choke fully in - almost - but hopefully it just needs adjusted.  It felt sprightlier than I remembered pre-carb rebuild, didn't stall, gearbox snickety smooth with the new gearbox oil and driveshafts, suspension lovely and compliant over speed bumps, such a shame I broke it (or almost broke it....?!?!?!). 

When hot the exhaust wasn't smoking, but there was certainly a 'thrum' (if that's the word) from the engine, almost like a very quiet intermittent backfire maybe, not experienced enough to know exactly what the noise is. 

See if you can hear it in this video - http://imgur.com/gallery/dW2aZMH

Almost tempted to take it into the office tomorrow to see what's what, but breaking down in the Blackwall Tunnel would be less than ideal, and knowing my luck ... 

Oh one minor problem - my bodge driver seat fix doesn't let the seat go fully forward. If you were shorter than me you'd struggle to drive it. Is that an MOT fail ...?
?

Edited by Cascade360 on Thursday 2nd September 17:28

Cascade360

Original Poster:

11,574 posts

86 months

Thursday 2nd September 2021
quotequote all
?So I decided to get it off my drive and take it for a spin. 

At first I wondered what on earth I'd broke, it was making some very odd noises at low speeds.  Turns out front wheel bolts were only finger tight ... ??

After that ... it drove beautifully.  Still won't idle with the choke fully in - almost - but hopefully it just needs adjusted.  It felt sprightlier than I remembered pre-carb rebuild, didn't stall, gearbox snickety smooth with the new gearbox oil and driveshafts, suspension lovely and compliant over speed bumps, such a shame I broke it (or almost broke it....?!?!?!). 

When hot the exhaust wasn't smoking, but there was certainly a 'thrum' (if that's the word) from the engine, almost like a very quiet intermittent backfire maybe, not experienced enough to know exactly what the noise is. 

See if you can hear it in this video - http://imgur.com/gallery/PFUGZBm

Almost tempted to take it into the office tomorrow to see what's what, but breaking down in the Blackwall Tunnel would be less than ideal, and knowing my luck ... 

Oh one minor problem - my bodge driver seat fix doesn't let the seat go fully forward. If you were shorter than me you'd struggle to drive it. Is that an MOT fail ...?
?

Edited by Cascade360 on Thursday 2nd September 17:32

Cascade360

Original Poster:

11,574 posts

86 months

Thursday 2nd September 2021
quotequote all
Took it out for a slightly longer spin, bit of dual carriageway, caught in traffic for fifteen minutes.  Drives fine.  Certainly doesn't seem to be any loss of power - in fact it is a positively nippy little car.  It still doesn't idle with the choke in - the problem I was having before I rebuilt the carb - but I haven't properly set it up since so perhaps it just needs adjustment.  It is hard to tell if it is running okay if idling with the choke partially out though ...

ReverendCounter

6,087 posts

177 months

Thursday 2nd September 2021
quotequote all
OK so the next three steps are, 1) set carb up properly, 2) pretend you can't hear the new noise, 3) drive as intended

Quick, get some proper use out of it on the B roads before the rotten weather sets in!

Cascade360

Original Poster:

11,574 posts

86 months

Saturday 4th September 2021
quotequote all
Turns out that i have the same problem as before i rebuilt the carb - crack the idle jet open a fraction and it runs well. Ordered a new idle jet to see if that sorts it.

But im very happy it is now running and driving well! Not sure the noise i thought i heard is still there or not, sounds fine now. Sprightly little thing, had it out and about a bit locally today; time to get some miles under its belt!



Making my street look like its the early noughties again!