Jump to content
READ ME - iOS Notifications - How To Enable - Guide

Warning for GTB owners...

alex_e3

By alex_e3
in Skoda Fabia Mk I (1999-2007)

 Share

Recommended Posts

  • Replies 148
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

alex_e3
alex_e3
silky16v
silky16v

Just look at the posts 85% are muppets that own them now cause they are cheapest they have even been The idiots I've dealt with selling parts and they want everything for nowt and most can't scrape

sepulchrave
sepulchrave

Or maybe you're sufficiently retarded...

Posted Images

  • 3 months later...
alex_e3 Experienced

alex_e3

Posted
  • Author
Posted (edited)

Just to bring this thread back from the dead...

 

Joe came to see me today for me to fit a new head gasket, due to him having head lift. All was well, until the head came off...

 

Piston no. 2 - cracked! The crack is in its early(ish) stages, but still noticeable and can't be left like that. If I'd have put the car back together, then Joe would've no doubt been left with a knackered block like the others and I. For comparison, Joe was running a Darkside GTB1756 at about 230-240bhp. Standard nozzles, but the output is obviously a fair bit lower than our 2260's were putting out.

 

I've already removed the pistons, ready for re-honing and new rings & piston. Sort of lucky that we caught it now, even if it still is a lot of work.

 

Hopefully Joe will be over with some pictures soon. Once he has gotten over the shock of seeing his entire engine torn apart in a day!

 

So, more GTB engine failures...  :peek:  :sweat:

Edited by alex_e3
  • Like 1
Link to comment
Share on other sites
Stuart27183 Rising Star

Stuart27183

Posted
Posted

Just to bring this thread back from the dead...

Joe came to see me today for me to fit a new head gasket, due to him having head lift. All was well, until the head came off...

Piston no. 2 - cracked! The crack is in its early(ish) stages, but still noticeable and can't be left like that. If I'd have put the car back together, then Joe would've no doubt been left with a knackered block like the others and I. For comparison, Joe was running a Darkside GTB1756 at about 230-240bhp. Standard nozzles, but the output is obviously a fair bit lower than our 2260's were putting out.

I've already removed the pistons, ready for re-honing and new rings & piston. Sort of lucky that we caught it now, even if it still is a lot of work.

Hopefully Joe will be over with some pictures soon. Once he has gotten over the shock of seeing his entire engine torn apart in a day!

So, more GTB engine failures... :peek: :sweat:

Sorry to hear that for joe :( who mapped it and was it running really long durations? Must have been at about 2.2 bar to get those numbers, and stock nozzles again..... ...

Link to comment
Share on other sites
alex_e3 Experienced

alex_e3

Posted
  • Author
Posted (edited)

John mapped it. I think he runs less advance than most mappers as it happens!

 

Stock nozzles again yeah. But far less power than the 2260's that we blew up. It seems this 'safe' limit is going down by the day!

 

I'll be rebuilding it as soon as I get the parts. I've also managed to persuade Joe to get the pistons ceramic coated. So hopefully, there'll be no more issues!

Edited by alex_e3
  • Like 2
Link to comment
Share on other sites
vRS Joe Experienced

vRS Joe

Posted
Posted (edited)

It's my car that was the latest to go....

BLT engined Fabia with GTB1756vk turbo running 2.3 bar of boost for the last 40k miles. Milage is 121'000.

I'm not changing the Pistons, the cracked one (number 2) is just being replaced with one of Alex's spare ones.

That saves a bit of money which is going towards the ceramic coating (£200)

The car hasn't been running quite right for some time. It was intermittently producing lots of white/grey smoke under boost. It will be interesting to see if that persists after the re-build.

Thankfully Alex caught this one before it damaged the block...

Edited by vRS Joe
  • Like 4
Link to comment
Share on other sites
Matt. Rising Star

Matt.

Posted
Posted (edited)

Has anyone looked into the possibility of using ARL pistons? There are quite a few big power Mk4 Golf ARL's out there including Bobby Singh's old 2260 that didn't suffer cracked pistons. Just a thought, they may be completely incompatible...

Edited by Matt.
Link to comment
Share on other sites
sepulchrave Mentor

sepulchrave

Posted
Posted

Has anyone looked into the possibility of using ARL pistons? There are quite a few big power Mk4 Golf ARL's out there including Bobby Singh's old 2260 that didn't suffer cracked pistons. Just a thought, they may be completely incompatible...

 

...or they may be exactly the same pistons but with big injectors and suitable mapping.

  • Like 1
Link to comment
Share on other sites
hutchysrs50 Mentor

hutchysrs50

Posted
Posted (edited)

Just searched ARL piston on google and found this link, might be handy for some of the people on here with the 2.0 builds etc...

http://forums.tdiclub.com/showthread.php?t=393314

 

some great pictures showing the pistons side by side, you can clearly see the deisgn is different over the models.

Edited by hutchysrs50
Link to comment
Share on other sites
sepulchrave Mentor

sepulchrave

Posted
Posted

Just searched ARL piston on google and found this link, might be handy for some of the people on here with the 2.0 builds etc...

http://forums.tdiclub.com/showthread.php?t=393314

 

some great pictures showing the pistons side by side, you can clearly see the deisgn is different over the models.

 

That's because BHW pistons are from the 2.0 16 valve engine, they have a completely different crown shape and are for a larger bore.

 

ARL, ASZ and BLT pistons are all the same part.

Link to comment
Share on other sites
Mikek3111 Proficient

Mikek3111

Posted
Posted (edited)

For those who haven't seen my project thread, I stripped my engine fully yesterday. This is the damage to the piston...

DSC_0910_zps2t20wdrq.jpg

DSC_0911_zps4qtlmhqh.jpg

DSC_0912_zpsbhvpsvbi.jpg

DSC_0913_zpsycpl9lyv.jpg

The brass insert has been rotated round. The bore is also scored. Underside of the piston has since cracked through as well.

Rest of the engine is in fantastic condition I might add! You really wouldn't think it had covered 135k miles.

That piston has overheated

Are you all still running standard "Skoda recommended" oil?

My 2p worth I think damage is probably back pressure and oil overheating causing the Pistons to run hot and the back pressure cracking the Pistons.

Edited by Mikek3111
Link to comment
Share on other sites
stevobeavo Experienced

stevobeavo

Posted
Posted

Was down at unit 18 today and mentioned this to Ali. He said any fabia running over 220bhp or 1.9 bar of pressure will at some point crack a piston unless you up rate them. He said he mentioned it years ago on here when he was tuning and mapping lots of fabias.

He properly knows more than most when it comes to these engines too.

Link to comment
Share on other sites
Jrjg Experienced

Jrjg

Posted
Posted

Was down at unit 18 today and mentioned this to Ali. He said any fabia running over 220bhp or 1.9 bar of pressure will at some point crack a piston unless you up rate them.

Let's hope my 220 target isn't quite reached and the pistons have a lot of life in them then ... !

JRJG

Link to comment
Share on other sites
  • 4 weeks later...
alex_e3 Experienced

alex_e3

Posted
  • Author
Posted

Taken a while to get them back, but received Joe's ceramic coated pistons through the post today...

 

2016-06-28%2016.44.04_zpsql0pcqrh.jpg

 

2016-06-28%2016.44.23_zpsnbnpnn7q.jpg

 

2016-06-28%2016.44.29_zpszdoio9ld.jpg

 

 

Fingers crossed there should be no problems now :)

 

Now... to start piecing it back together  :nerd:  :D  

  • Like 1
Link to comment
Share on other sites
  • 3 weeks later...
felicia16v Experienced

felicia16v

Posted
Posted

Egr wouldn't be happening on high throttle loads anyway and I don't think light throttle is going to be causing these problems so I doubt it really.

  • Like 2
Link to comment
Share on other sites
coskev Experienced

coskev

Posted
Posted

Egr wouldn't be happening on high throttle loads anyway and I don't think light throttle is going to be causing these problems so I doubt it really.

Exactly that :)

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Community Partner

×
×
  • Create New...

Important Information

Welcome to BRISKODA. Please note the following important links Terms of Use. We have a comprehensive Privacy Policy. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.