Citroën AZU | Engine Revival Part 1 - I Don't Like The Look Of These Valves

Рет қаралды 5,188

Күн бұрын

Пікірлер: 70

@Alcalfa Ай бұрын

I have always thought it good to use an engine oil cleaning treatment to flush the deposits and gunk out of a motor (at least some of them) before opening it.

@1unsung971 2 ай бұрын

I am very enthusiastic to view the slow motion footage to a soundtrack by Tangerine Dream!!

@alansorbie4038 2 ай бұрын

Good job on overhauling the engine. When you only have two small cylinders they both need to be working well!

@neetpbg4 2 ай бұрын

Slowmo engine cleaning, I'll bet there is an audience for that. 😋

@JimF500 2 ай бұрын

ASMR

@anidiotinaracingcar4874 Ай бұрын

Slowside garage

@dungbetel 2 ай бұрын

Looking forward to the "director's cut" of the video (yes, Tangerine Dream sounds like a good soundtrack).

@stephenjcuk7562 2 ай бұрын

"If you have to do everything right then you may not do anything at all" I doubt you have ever heeded this advice, especially after you have slept on it. Great content.

@SeasideGarage 2 ай бұрын

Haha... but it's great advice! not necessarily to succeed but to learn and hone your skill level... I honestly think it's better to try and fail then to realise the job is to complicated to do at your current skill level..

@SeasideGarage 2 ай бұрын

AND sometimes to find out that the correct way to do stuff is waaaay over complicating things and "belts and suspenderes"

@andrewmooreandrewrmoore7615 2 ай бұрын

Liking this video. I have an 87 Special so it's really cool to see how the old engine is different from the 602.

@robinvandijk6405 2 ай бұрын

And evaporust can be reused several times before it loses its capacity to remove the rust. Another good reason for you to use it. Reusability. 😊

@lxaegg 2 ай бұрын

I think the cuts along pistons are so the pistons dont seize in the cylinders when the pistons heat up. Under extreme load conditions. (Small 2 cyl engine in a transporter that might get very hot when it gets overloaded or going up mountains.) I think its on ford model a and t pistons too. As far as im aware its because the kind of aluminum that was available back then would expand more under heat than the aluminum mix that is used for pistons today.

@kevinnye5132 2 ай бұрын

Can’t wait to see some LAPPING ACTION Seppo 😂👍🏻

@jochenstacker7448 2 ай бұрын

Recessed valve seats on older engines can be due to the switch to unleaded petrol in the 70s/80s. The lead protected the valve seats (and poisoned us all and cost us IQ points 😁), but later on hardened valve seats were used. When you're fitting new valves, check out the possibility of fitting hardened valve seats if possible. With that you can future proof this engine without using additives or just living with the fact that the valve seats will just be eaten away again.

@SeasideGarage 2 ай бұрын

Being a aluminum head the valve seat will already be hardened steel... :) The 2cv engine (602 at least) did not change anything in the head going from lead to unleaded... and they are totally safe to run on unleaded. Im pretty sure its the same with the 425cc :)

@jochenstacker7448 2 ай бұрын

@@SeasideGarage ok, then you're good. I do seem to remember now hearing back then that Die Ente (the duck as 2CVs are called here in Germany) don't need lead.

@Turboflapper2000 2 ай бұрын

What a beauty of a project! Keep it up.

@johnwaga3702 2 ай бұрын

I always love watching you working on these fantastic two cylinder Citroen engines!

@harryharker9564 2 ай бұрын

with a leak like that it's great that such a high compression was achieved

@SeasideGarage 2 ай бұрын

yea and the wear on the cylinder lip also... quite surprised by it actually....

@twocvbloke 2 ай бұрын

As long as the valves are straight, you could cut a new edge on the mating surface with a lathe, then lap them in with valve paste for a nice and tight seal... :)

@anidiotinaracingcar4874 Ай бұрын

13:37 You're not drawing a *vaccum* here

@gerhard6105 2 ай бұрын

Such a long vertical opening in the piston wall is also on my 1940 Opel Kadetts pistons. In my Opel technical book from 1937 is written that these so-called "Invar-Streife" are made to achieve a regular/gleichmäßigere Ausdehnung extension. So, it is okay.

@SeasideGarage 2 ай бұрын

Interesting! Never seen it before... :)

@kosir1234 2 ай бұрын

maybe it has to do something with high temperatures, so it doesnt bind the piston if it gets too hot?

@lesklower7281 Ай бұрын

New barbells pistons rings and now valves your AZU will go like a brand new AZU and how simple and easy are the Citroen 2CV engines are to work on obviously Hubnut works on his 2CV a lot but thus is the way they were designed

@Fordprefect1000 2 ай бұрын

I love your videos

@SeasideGarage 2 ай бұрын

I am happy to hear that!

@MrToxicSkittle 2 ай бұрын

I wonder if the reason why the grooves are oriented opposite of each other is due to the rotation of the engine? During the power stroke, the connecting rod will not be parallel to the cylinder, meaning that the piston will be forced to one side. And I doubt it would be very good if the side that was being forced against the cylinder had a groove like that. But I could be wrong!

@anair70 2 ай бұрын

Valves work one way right? Against the compression? The air pressure would lift the valves a bit and let air out.really old engines didn't have a cam to open the valves, they depended on thr vacuum as the piston descended to pull the valve a bit (weak valve spring) and allow the inlet mixture into the combustion chamber.

@chriscansdale6389 2 ай бұрын

I wanted to draw attention to the way you tested the valves.. although you show that they are wearing, I would have thought you would draw a vacuum against them from the ports? Pressurising the ports would (depending on the pressure and spring strength) start to force the valves open and they would leak. As you say, it had reasonable compression. It perhaps would have been better to do a leak down test whilst still assembled. By feeding compressed air into the bore via the spark plug hole on the firing stroke (so both valves closed) you could then assess leaking, either past rings (into the crankcase) or out of either of the ports if a valve was leaking and also identifying which valve. Alternatively you could have used petrol as you mentioned, but left it to sit and then look in via the ports to see which if any valve stems were wet. Petrol is better than water as it wicks through more easily.

@SeasideGarage 2 ай бұрын

I only applied very little pressure.. and it leaked straight away... I also vacuum tested it.. and its bad.. But its true that pressure would open the valves at some point :)

@jochenstacker7448 2 ай бұрын

When I see that engine I wonder if it will fit in my GS. And the other way round. 😁

@Mr.Serious72 2 ай бұрын

If it's a 2 Valve. Yes but why. I want to go the other way. 50 horses in a 2CV

@leslieaustin151 2 ай бұрын

It’s already been done. Sparrow (I think) has a racing / hill-climbing 2CV which he also drives on the road with a Beemer flat twin in it.

@jochenstacker7448 2 ай бұрын

@@Mr.Serious72 Just for fun. Imagine buying a 2CV and a GS just to swap the engines around. 😀 (Kidding, I would never do that to my beloved GS)

@mehrzahl2219 2 ай бұрын

😂 a 425cc GS? That's Robot Cantina right there!

@kosir1234 2 ай бұрын

that hammers @16:20 😍

@SeasideGarage 2 ай бұрын

Yes... if only someone sold them!

@kosir1234 2 ай бұрын

@@SeasideGarage nobody would pay for them :D

@SeasideGarage 2 ай бұрын

@@kosir1234 i love them

@MitzvosGolem1 2 ай бұрын

A danke Schoen 👍

@steveworth544 2 ай бұрын

If evaporust works, we all need to buy some before the government force them to remove the active ingredient😀

@KirksAudioSanctum 2 ай бұрын

0:35 You could speed it up and put some music over it... I would watch it just to give you some extra KZbin bits.

@KirksAudioSanctum 2 ай бұрын

You should use this tune... 😂🤣😂 kzbin.info/www/bejne/fZ3TdZlsjb2SoJIsi=aUn9mGOJCmID6wxX

@chilleddriving1455 2 ай бұрын

What grit number are those honing stones?

@TheStobb50 2 ай бұрын

I’m not a mechanic or anywhere near but if you put pressure behind the valves, they will open and leak ?

@SeasideGarage 2 ай бұрын

yes but u need a lot of pressure.. not this amount.. I also did apply vacuum to it, and it sucked the water out of the chamber, but did not include that clip.. :)

@anidiotinaracingcar4874 Ай бұрын

This is such a tiny engine! How much does it weigh?

@SeasideGarage Ай бұрын

its a guess... but without transmission... maybe 30kg?

@anidiotinaracingcar4874 Ай бұрын

@@SeasideGarage Incredible. You could have a spare with your at all time and swap it within the hour in case of a mechanical problem