XANTIA HDi RUNNING ROUGH

[Stickyfinger]

[Huskyxantia]

Hi, I've just skimmed through this, so the problem is a hole in one of the pistons (crown) what options are being looked at now ? Was you relieved when you found it ? Or was it one of them now what do I do moments

[MattBLancs]

Re question about valve cutouts and if the valves are off to one side.

Quick eBay search here's a second hand cylinder head: they'd not far off central relative to the cylinder bore:

Copied from:
https://ebay.us/m/qCb6iA.


Re: could you grind that chunk out of that camshaft? I'm not sure how easily that'd be done (would probably seek out a second hand head complete or camshaft if it was me)

Re: not needing to fix it - ah bliss, the rare chance to fix it at your leisure without the stress of not having needed transport available!

Interesting stuff, enjoying being along for the journey

[Rhothgar]

Hi, I've just skimmed through this, so the problem is a hole in one of the pistons (crown) what options are being looked at now ? Was you relieved when you found it ? Or was it one of them now what do I do moments

There isn’t a hole in the piston. Unless something has changed since last week.

[Rhothgar]

Re question about valve cutouts and if the valves are off to one side.

Quick eBay search here's a second hand cylinder head: they'd not far off central relative to the cylinder bore:

Copied from:
https://ebay.us/m/qCb6iA.


Re: could you grind that chunk out of that camshaft? I'm not sure how easily that'd be done (would probably seek out a second hand head complete or camshaft if it was me)

Re: not needing to fix it - ah bliss, the rare chance to fix it at your leisure without the stress of not having needed transport available!

Interesting stuff, enjoying being along for the journey

This nicely proves that the oil slick is on the correct side of the piston ie to the rear.

[Huskyxantia]

Hi, I've just skimmed through this, so the problem is a hole in one of the pistons (crown) what options are being looked at now ? Was you relieved when you found it ? Or was it one of them now what do I do moments

There isn’t a hole in the piston. Unless something has changed since last week.

Accept my apology, it looked like a hole in the piston from what I saw , what's your overall plan for the cars outcome ?

[Rhothgar]

Rothgar

I'm still alive ...I haven't got any further yet and am having real motivation/debating my sanity problems, I can't decide whether to call the men in white coats to take me away . I think the biggest problem I have, is that I don't need the car to get around, we have 2 other cars so it's surplus, I've never been in this position before...normally I need to fix the car so just crack on. It's only curiosity that is tempting me to do the strip down.

I hope you haven't had the same trouble with your Tax Return

I've already made representations for them to take me away.

Finished the accounts last night and emailed to accountant for number-crunching and CT preparation and 2.5 months early. That's a first for Mr. Procrastinator.

[Rhothgar]

Hi, I've just skimmed through this, so the problem is a hole in one of the pistons (crown) what options are being looked at now ? Was you relieved when you found it ? Or was it one of them now what do I do moments

There isn’t a hole in the piston. Unless something has changed since last week.

Accept my apology, it looked like a hole in the piston from what I saw , what's your overall plan for the cars outcome ?

Skull was worried about it being a holed piston initially as he thought he had seen a shard of metal in one of the photos but it turned out it was just the edge of the valve relief pattern in the top of the piston.

He's planning on fixing I believe when the men in white coats release him from his shackles...

Hopefully not a biggie but the jury's out on whether he's taking the head off to do further checks or just replacing the cam follower and hoping for the best. The Jim / Mick camp is for "off with its head" whereas a couple of us as "softly, softly" approach (why do more work than necessary). This is providing he can recover the end of his mirror with a mini-grabber type affair which fell into the black hole when he stuck his who-ji-ma-flop in there....

Oooh matron! Sounds painful!

[Skull]

Sorry if I've been ignoring anyone or the thread but I have been trying to get stuck in when the weather and free time coinside.

Rothgar I will not allow your Jedi mind powers to persuade me .... I have not decided what to do regarding repairs, those of you who think a Cam Follower would be worth a try might be right IF I had compression there's a good chance of that, I can't do another compression test now as the Camshaft is removed and the Piston is obstructed by either the mirror stuck in there or (sounds like) something stronger in the way, I've tried to manually crank it and crush the plastic mirror but I get the 'feeling' something solid is in the way....plus I will lose position of the TDC on it's Compression stroke.

XantiaHusky No need for apologies it does look like a holed piston to me, so we might still be right ....What will happen to the car all depends on the extent of engine damage...It's MoT'd until 26 JUL 26

So currently a further strip down is underway...Exhaust Cat removed, Driveshaft is out - made more akward and nerve-racking as the suspension is still pressurised.

Normally I would depressurise but I need clearance for any future loading that might be required. It's on ramps AND axle stands as stable as I can get her ...

Skull's - Rear of Engine view

Not much further today as I've had to admit defeat on the Turbo Oil Feed line which is secured with a banjo type braided hose of unknown torque and despite my improvised tools requires a 14mm Hex Sump Key (another tool to buy despite my vast collection)...

Skull's - More tools required

The Men In White Coats are having Christmas anyway .... Merry Christmas FCF

[Rhothgar]

Rothgar I will not allow your Jedi mind powers to persuade me ....

FCF - You will never find a more wretched hive of scum and villainy. We must be cautious.

How long have you had these French cars?

About 3 or 4 seasons. They’re not for sale.

These aren’t the cam followers you are looking for.

[moizeau]

Whatever you find, it won't be as bad as this

or this

Cams are out, chuck some air down the cylinders

[Skull]

No it won't be that bad Pete ...Mine was still running

[CitroJim]

Whatever you find, it won't be as bad as this

Gosh Pete whatever happened there?

[moizeau]

Gosh Pete whatever happened there?

I bought the bike with a siezed engine. It had only done 5000kms since having a top end rebuild and new Wiseco pistons. The 'mechanic' (using the term in the loosest way possible) didn't know his arris from a hole in the ground. He either partially removed the camchain tensioner then refitted it of fitted the tensioner before fitting the valve cover. Either of these will cause the camchain to be massively over tensioned. This caused the camchain to be pulled into the head slowly eating away at the cam journals which then jumped down the middle of the engine and made love with the crank, breaking a shim and pushing the valve cover off in the process. The PO did say it was rather spectacular!

It did mean I got my fuel injected GPz1100 from 1983 for just a little bit more than the price of the 1170cc Wiseco kit. Fiding a new head was fun, the bike was only made for 3 years but one turned up thanks to a chap in the Z1 Owners Club.
It's currently going through a complete rebuild, every nut and bolt frame and engine.
A long job with a few more hard to find parts to source but it will be worth it.

There you go Jim, bet you'd never asked now

[Rhothgar]

It did mean I got my fuel injected GPz1100 from 1983 for just a little bit more than the price of the 1170cc Wiseco kit.

What a find! A bonkers bike in its day and probably still beat a fair few modern bikes in acceleration over the 1/4 mile.