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Originally posted by 555bug
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That last skid control picture is great 
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thanks mate, so much fun being able to drive it that hard... -
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results from the last lakeside khanacross on the am session...
pipped by 3 10ths of a second by the civic...
not sure the track was really suited to the civic's aero so i was up against the lotus in the pm which i managed to win out...
then things went very bad around lakeside main circuit the next day, i blew the motor. time for something built...
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Wowsers - you blew the engine?! Very surprised this happened when its obvious you are super OCD with over-servicing the car, and the engine was very low km's. Any idea what the culprit was?Comment
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yep, melted the piston rings in cylinder 4. not 100% sure of the cause yet and I would like some further diagnosis from the shop if possible but maybe a faulty fuel injector...
obviously I'm concerned about tipping in 15k on a built motor and then frying that so i've asked for some reassurance in that regard. the fuel system will be fully tested as part of the build...
I can't say I'm that ecstatic about the situation but I have to be honest and say I was thinking about building the motor at one point or switching to the next platform golf r, now I don't really have a choice. realistically running on the limits of power and torque on stock internals is always going to be risky. combine that with a lot of track work and I guess its really a time bomb. you'd probably get away with stock for spirited drives, drag runs and occasional track but once you start relentlessly leaning on it then you're in the risk zone. that said you do hear of people running high power from factory internals but I'd be interested how much track time the cars see...
that's what i'm convincing myself anyway, to ease the pain in the wallet...Comment
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also finally decided to chase some of that bhp/tonne and remove the passenger seat for track days as it literally weighs a tonne. I bought this connector to stop the airbag malfunction system going off...
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I heard from the engine builder last week and all the parts have arrived now after some complications with the con-rod delivery. It should be in the machine shop this week and then the rebuild can start...
I still don't know what caused the piston to melt in the first place and it got me thinking that may be I should be monitoring afr. I'm not really a big fan of gauges everywhere (been there, done that) so I was searching around for the neatest option. to my pleasant surprise the p3 gauge company just released an upgrade chip track pack that will allow my p3 gauge to read afr...
it has already arrived so I'll be getting that installed as soon as I receive the car back...
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If you are handy you can get a built short-block for reasonable money.
IE 2.0T FSI Sport Short Block | Fits VW & AudiComment
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thanks for the info but it's still not great value in my opinion...
Parts cost $5,850 USD
plus shipping (rough guess ) $1,000 USD
Plus export fee (rough guess) $500 USD
Total $7,350 USD ($10,850 AUD)
so approximately 11k without any head work and excluding labour. suddenly 15k without getting my hands dirty and including valves and springs sounds pretty good...
I could be way off on shipping and export fees but the usual rule of thumb is think of a cost and double it...
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the rebuilt motor is back, whoop whoop...
I have only just run it in up to 4k rpm and feels strong as an ox. might not be that surprising that I can feel the difference when you look at these photos...
I think its gone from a 3 to a 4 cylinder motor, you can still see the black coating on the other side of the piston...
and the old one is not so round anymore when you look at it from the top...
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God damn, that piston has been through some stuff!
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What was the failure point in the end, did it lean out or was it an oil issue?
Sent from my SM-G950F using TapatalkComment
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it wasn't 100% conclusive in the end, the general consensus is that the stock pistons aren't built for the higher horse power and temperatures produced when being flogged around a track. subsequently it melted...
when the fuel system was tested a couple of the injectors were not 100% which is why all injectors were replaced during the build. one of the faulty injectors was over piston number 4 (the one in the photos) therefore it could also be a factor...
lets hope the new JE pistons are manufactured from sterner stuff...Comment
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Great work with the build, thanks for sharing. StephenComment
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time for a small update, I rolled the guards and got some wider rubber...
first thing that need to go was the instructions...
I went with 255 which is pretty wide for this chassis...
looking pretty meaty...
hopefully I can avoid rubbing the arches, I'm also after more camber which should help...
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