Scirocco 2.0TSI

[MeTsU]

Yes the piston goes higher

I'm not sure I follow.

 

[Sub-lime]

I have a basic understanding of engines having built my own 4AF race car as well as dabbling in some personal wmi, turbo and supercharger (SC12 from 4AGZE, Eaton From Mercs) setups. But I have never heard of a piston moving higher or lower (not faster) based on Revs.

Can you provide any actual data to prove that?

Like I said I'm far from a master mech nor do I have 15 years under my belt but what I do know has served me well in all my projects. Keen to learn so share that mechanical wisdom Skalabala..

 

[Sub-lime]

How would you explain the compression ratio then..

 

[MeTsU]

How would you explain the compression ratio then..

Variable...

 

[Sub-lime]

Variable...

You're right. I knew it was in 2T engines.

Too add to this looking at Saab's engine design and one used for the Q50 Infity which uses the Variable compression it does seem the piston can move up or down more. This is how the compression is changed. News to me but Sol is correct in saying it can move more or less. It's a lot of wizardry but facts are facts and learn something new.

Whether or not Soo or Skalabala knew this or not it does.

Source: Variable-Compression Engines Are Now a Thing, But They're Far From a New Idea

 

[Skalabala]

The rod stretches at high rpm. Piston growth together with rod stretch and thermal expansion can raise the piston to deck height by up to 0.4mm

 

[Ageless_ZA]

@Skalabala fokof hier troll. Ek sal jou slaan met n piston wat teen jou hoof sal klap. Full stretch.

 

[Ageless_ZA]

old peeps might not rev the shit out of the car but low revs can also cause issues for the next buyer as the engine tends to only see certain height inside the piston sleeves and can leave the top end still as it was in the factory and once revs are higher then normal (new user) then can start knocking on that formed groove...

Gearhead 101: Understanding How Your Car's Engine Works

We’ll begin our first class of Gearhead 101 by explaining the ins and outs of the heart of a car: the internal combustion engine.

www.artofmanliness.com

I suggest you learn HOW an engine works.

 

[Sub-lime]

So we learnt something new but back to the OP cars which doesn't have this funky hinged crank to rod connector. It's just a tit 2.0 Tebo.

 

[Skalabala]

@Skalabala fokof hier troll. Ek sal jou slaan met n piston wat teen jou hoof sal klap. Full stretch.

Jou sussie stuur groete

 

[Ageless_ZA]

Jou sussie stuur groete

Sy sit nog daar in jou ma se keel. Se vir haar hullo ook.

xoxoxo

 

[aiccc]

Regarding rod stretch

Engine Connecting Rod Failures - Prevention

Connecting Rods - Learn Their Importance & Upgrades for High Performance Engines. Rod Failures, Bolt Strength, & More.

www.enginebuildermag.com

I built a high revving 4 approx 18 months ago. We also set a custom deck height to optimise the burn. Then this year we bumped the revs up by 1000 rpm. Later we are going to increase it by another 500rpm.

BTW when one is blue printing an engine, you do so with regard to temps.

Engine Deck Clearance

help.summitracing.com

Quote from this article "Aluminum rods get longer as they get hotter."

Engine Quench

help.summitracing.com

This is one of the reasons you have different rod types, H beam, I beam etc.

It is called a con-rod. I might be conning you.

Been working on cars from the 80's. Mostly building engines, gear boxes and diff. I am also certified to rebuild a specific brand damper.

 

[Pickled_Dick]

WHAT

A

LOAD

OF

HORSE SHIT

🤣

You clearly have no idea what you are talking about 🤣🤣🤣 like bad!

and Yes I have worked on all of them, repaired them and modified them... I actually owned my own tuning company at some point. And I must say... your nephew sounds like a pretty dreary dude... Not bad for someone who learns the ins and outs of a motor through a SSP document to tell the guys who designed the motor how it works..... suuuuuuurrrreeeee

Anyway... onto the last quote above... No, The most common issue is chain tensioner failure, The "injector" problem is actually nothing to do with the injector, Its the design of the motor. Also a much more relevant issue on ea113 era motors rather than EA888... but fuck.. what do I know.

Gearbox... Yeah the DQ200 in the 1.4s had reliability issues, Mostly clutch pack issues due to the dry clutch setup... The DQ250 boxes are pretty solid... they still use them to this day... The only reason there are so many cases of mechatronic failures is because there are so many of them... like millions... The actual failure rate is pretty low in reality. Its also a pretty easy thing to recon, just lots of labour involved.

The "super bad knock retard" is all sorts of nonsense, If that was true you wouldn't be able to tune them on "SA Fuels"... Which everyone knows is a great past time activity in SA. The only way this is possible is if the cars ran very lean from factory... which it doesn't... quite the opposite actually.

O and just a side note... SA fuels are really not as bad as everyone makes it out to be, Its the way in which fuels are stored and the high temps that's more of an issue, Not the quality of the fuel itself.

None of this makes the Scirocco the worst car you can buy tho

After a google, just for personal interest,
this seems like the fullest list of issues on ea888

VW and Audi 2.0T TSI Common Issues

For a while now we have been putting out articles about common issues with the TSI and FSI engines. Listed below are the articles we have published to date. We are planning to put out articles regularly and we will update this thread as new articles are published. We hope you check them out...

forums.vwvortex.com

But also i know nothing about VAG cars,
Anyone needs some advise on Renault sports, hit me up
9 Years, 7 cars, 3 project cars and a bunch of fun (and imported parts)

 

[Oj0]

After a google, just for personal interest,
this seems like the fullest list of issues on ea888

VW and Audi 2.0T TSI Common Issues

For a while now we have been putting out articles about common issues with the TSI and FSI engines. Listed below are the articles we have published to date. We are planning to put out articles regularly and we will update this thread as new articles are published. We hope you check them out...

forums.vwvortex.com

But also i know nothing about VAG cars,
Anyone needs some advise on Renault sports, hit me up
9 Years, 7 cars, 3 project cars and a bunch of fun (and imported parts)

That post would have been epic if you started with "Excuse my French, but..."

 

[Pickled_Dick]

That post would have been epic if you started with "Excuse my French, but..."

hahahaaah fuck i missed a major opp here

 

[Skalabala]

Wait.... what 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣

jeezus fucking christ man, 15 years in the field and you dont know the basics of how a engine works

No, it doesn’t, the stroke is a fixed length that is determined by the throw of the crankshaft. No matter how much you rev it, it cannot change.

This is just sad