Another engine build

[Jern54]

Hello,

After pushing the stock engine with Chinesium 17T at 27psi on E80 mixes for several months, the engine suffered compression loss on cyl 4 (79psi)

The engine is completely taken apart at the moment.

I will update this tread once in a while when I have some new content coming up.

Cheers

Mods:

JE Ultra Series 9.5:1 pistons 84.00mm
Dry Ductile Iron Sleeves
FCP H-beam connecting rods
Hydra HP800 turbo's
N53 intake camshaft
VTT spline lock crank hub
VTT crank bolt capture
BMP stock location PI manifold
Stage 3 LPFP (duo Walbro 450)
Upgraded LP fuel line
Motiv Flex Fuel
Inline fuel filter in front of HPFP

 

[Jern54]

Broken ringlands on piston #4

 

[Jern54]

Very strange wear pattern on the big end bearing of unit #5.
Did anyone see this before?
Blackstone oil analysis were all fine.

 

[derekgates]

Bummer, sorry to hear that.

Crazy wear pattern! I don't know much about that.

 

[RuskiRacer]

Crazy to see how Blackstone didn't pick that up in any samples.

 

[NoGuru]

Bummer to hear.
When was the last sample sent to Blackstone? This could have only just happend.

 

[Jern54]

Last sample was sent 5000 miles (5 months) ago.
IMO the damage pattern is a result of prolonged wear but that's just a guess.

 

[derekgates]

Last sample was sent 5000 miles (5 months) ago.
IMO the damage pattern is a result of prolonged wear but that's just a guess.

hmm, they normally catch things like this. Could have been an extremely slow process of degradation.

At least you send your samples in. I have 10 bottles full, like a freaking idiot. At least I can say "I can't believe they didn't catch the problem!"

 

[Jern54]

And I have to ship the samples across half the world! (Netherlands)

 

[Jern54]

So the block is finally being machined at the shop for some new ductile iron Sleeves from Westwood cylinder liners. Hopefully I can pick up de block one of these days so we can start to build it back together.

 

[SlowE93]

Hello,

After pushing the stock engine with Chinesium 17T at 27psi on E80 mixes for several months, the engine suffered compression loss on cyl 4 (79psi)

The engine is completely taken apart at the moment.

I will update this tread once in a while when I have some new content coming up.

Cheers

Mods:

JE Ultra Series 9.5:1 pistons 84.00mm
Ductile Iron Sleeves
FCP H-beam connecting rods
Hydra HP800 turbo's
VTT spline lock crank hub
VTT crank bolt capture
BMP stock location PI manifold
Stage 3 LPFP (duo Walbro 450)
Upgraded LP fuel line
Inline fuel filter in front of HPFP

Do you know what actually caused the ringland failure ?
Timing too aggressive ?
Afr too lean ?

 

[Jern54]

Do you know what actually caused the ringland failure ?
Timing too aggressive ?
Afr too lean ?

27psi on 17T chinesiums on a 200k miles engine with 14 degrees of timing.
The ringlands of the cast pistons are a weak spot at that power level.

 

[SlowE93]

27psi on 17T chinesiums on a 200k miles engine with 14 degrees of timing.
The ringlands of the cast pistons are a weak spot at that power level.

So 650+WHP on a 200k mile motor ?

 

[JMVELA]

27psi on 17T chinesiums on a 200k miles engine with 14 degrees of timing.
The ringlands of the cast pistons are a weak spot at that power level.

14 degrees @ 27 psi????????????????? What??

 

[SlowE93]

14 degrees @ 27 psi????????????????? What??

Expected outcome

 

[Jern54]

200k KM not miles
Nevertheless it was quite an effort

 

[JMVELA]

27psi on 17T chinesiums on a 200k miles engine with 14 degrees of timing.
The ringlands of the cast pistons are a weak spot at that power level.

The ringlands were not your failure caused, timing was!

 

[Jern54]

Explain

 

[Jern54]

Like I said before, the pistons could not handle the combustion pressures.

 

[SlowE93]

Like I said before, the pistons could not handle the combustion pressures.

Yes, but they were not supposed / expected to do so with that boost psi and timing combination.