Is it true that if i remove the hydraulic  lifters  of my old engine, i must install them in the same position?

Not because the wear pattern, but due the oil charge status inside them to match the valve height

Not if you compress them in a vice to squeeze out all the oil before refitting them.

7 hours ago, Kharl said:

Is it true that if i remove the hydraulic  lifters  of my old engine, i must install them in the same position?

Not because the wear pattern, but due the oil charge status inside them to match the valve height

I've never heard that one before. I'd advise refitting used tappets (solid or hydraulic) and rocker arms in the same positions because of wear patterns though.

Ok, thank you for the answers. 

 

And now that you mention, new lifters come compressed.

 

What about when i install used one, filled with oil and stuck...?

It's what the mechanic did because he tought it would work

 

If you install old lifters that are still full of oil or stuck you risk losing compression and burning the valve seats, they might unstick themselves but it's very bad practice.

1 hour ago, sepulchrave said:

If you install old lifters that are still full of oil or stuck you risk losing compression and burning the valve seats, they might unstick themselves but it's very bad practice.

We ran the engine for like one mi ute with that situation.

 

Do you think....?

1 minute ago, Kharl said:

We ran the engine for like one mi ute with that situation.

 

Do you think....?

 

No, I don't, it's just sloppy, not dangerous.

 

In fact I think that's your mechanics new nickname, if he was one of the seven dwarves he'd be Sloppy.

For sure es 🤣🤣.

 

So, do you think that i dont have to worry for permanent damage after running the car idle for one minutes with old fill with oil and stuck lifters?

1 hour ago, sepulchrave said:

they might unstick themselves

Also @Kharl if they unstick and aren't actually bent that is. Because for sure they won't unbend themselves.

21 minutes ago, KenONeill said:

Also @Kharl if they unstick and aren't actually bent that is. Because for sure they won't unbend themselves.

I agree

45 minutes ago, Kharl said:

For sure es 🤣🤣.

 

So, do you think that i dont have to worry for permanent damage after running the car idle for one minutes with old fill with oil and stuck lifters?

 

No, because the difference in height between lifters is fractions of a millimetre, enough to stop a valve from seating properly but not enough to cause interference.

Ohh that is why i heard a noise f air in reverse in the air intake.

 

So, luckly, i just need to get new quality lifters and thats it?

28 minutes ago, Kharl said:

Ohh that is why i heard a noise f air in reverse in the air intake.

 

So, luckly, i just need to get new quality lifters and thats it?

 

No, I doubt your old lifters are damaged.

3 minutes ago, sepulchrave said:

 

No, I doubt your old lifters are damaged.

No, i mean the engine and valves, i dont care about the old lifter, all i want is my engine back safe and sound.

12 minutes ago, Kharl said:

No, i mean the engine and valves, i dont care about the old lifter, all i want is my engine back safe and sound.

 

Do a compression test if you're worried.

3 minutes ago, sepulchrave said:

 

Do a compression test if you're worried.

Compression test?  Maybe the dealer has that simply tool.

 

But at your knowledge, for running the engine a minute with the old stuck lifters, could that have caused major damages?

12 minutes ago, Kharl said:

Compression test?  Maybe the dealer has that simply tool.

 

But at your knowledge, for running the engine a minute with the old stuck lifters, could that have caused major damages?

 

No, I already said it couldn't cause any damage.

Got it, i really need the car, last time i use it was giving me 2.3 liter per 100, 85km/h flat

🙇🏻‍♂️

Edited 22 August, 20214 yr by Kharl

Good morning.

 

Question.

 

Are the TDI hydraulic lifters the same for the SDI?

 

Someone told me to avoid Topran brand, and those are the only available in thia country.

But i got some  from another quality brand (dont remember) but the seller says it is for he TDI

Well they don't have the same VAG part number, and neither number is superseded by the other, so I would say there is probably some difference.

camshaft, valves - Fabia(FAB) [EUROPA 2002 year] (7zap.com)

camshaft, valves - Fabia(FAB) [EUROPA 2002 year] (7zap.com)

Yea, i find in OSCARO they are different

Even the dealer says they never bring the lifters... 

 

Oh wao

In this country  they insist tdi and sdi can use the same lifters even when the internal height  of the part that face to the valve is diferent and the part number is different too...

 

What an odyssey 

You can probably take a set apart and service them, instead of replacing.  

Rebuilding Hydraulic Lifters - YouTube

1 hour ago, Kharl said:

Are the TDI hydraulic lifters the same for the SDI?

I'd doubt it; check whether or not the camshafts themselves have different part numbers. I don't have a parts catalogue but I've a suspicion they will due to different base circles and/or ramps, and/or lifts.

Edited 23 August, 20214 yr by KenONeill