Another engine build

[Jern54]

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)

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

Cheers

Current Modifications:

Engine/Fueling/Exhaust/Cooling

Measured CR 9.4:1
JE Ultra Series 9.5:1 84.00mm forged 2618 pistons
FCP H-beam connecting rods
Westwood Cylinder Liners - Iron Ductile Sleeves
ACL Race connecting rod journals
Hydra Performance HP800 twin turbos
N53 intake camshaft
BMP Stock location PI intake manifold with 750cc injectors
Stock straight piped exhaust with Vibrant 1792 resonators and cut out valves
MHD Custom tuned by Wedge
Motiv Flex fuel kit
Stage 3 lpfp (duo walbro 450 triggered by Hobbs switch)
R8 coils
NGK Plugs - 2 step colder, 0.022"
Wagner 3" Downpipes
BMS DCI
BMS 2’’ inlets
BMS 3" J-pipe
Chinesium 7.5" RACE FMIC
VRSF 3’’ Charge Pipe - Anodized Black Finish
TiAL Q 50mm BOV with 6psi spring – with braided D04 hose AN to Banjo connected
Mishimoto 19-row oil cooler with AN10 braided hoses and fittings
Mosselman oil thermostat
RB external PCV with plugged head ports
Mishimoto low side catch can
PR upgraded 6an fuel line

Suspension
AP coilovers

Arms & Bars
Meyle HD Front and Rear Sway Bar Links
TRW M3 Front Wishbones
TRW M3 Front Tension Struts
TRW M3 Rear Wishbones
TRW M3 Rear Guide Rods
Hardrace adjustable rear toe arms
OEM M3 front headlight levelling bracket

Mounts
Revshift polyurethane 80A engine and trans mounts

Brakes
Front and rear F3x Performance brake kit

Wheels & Tires
Vorsteiner VFF106 Carbon Graphite Wheels - 19x8.5 Front, 19x10 Rear
Michelin Pilot Sport 4S Tires - 265/30/19 – 235/35/19

 

[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.