N54Tech.com - International Turbo Racing Discussion
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barkietrin7 barkietrin7 is offline
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Join Date: Jun 2020
Car: renualt
Default N54 is a dam good engine. but not all the things around it. - 06-11-2020, 08:46 AM

However all the components around it are complete ****, or they don't last much miles. I feel this engine puts way more stress on all these components then originally designed too.

I regret not doing an oil analysis from Blackstone lab before replacing all the components . I would be so pissed off when I finally finish replacing everything around my engine just to find out my engine is on it's way.

Parts replaced since I bought a 335i E90 sedan .

turbos oil pan gasket , oil filter housing gasket,valve cover gasket

"extended warranty paid for those turbos and gaskets "

water pump and thermostat serpentine belt and pulleys New DME ,fried the mosfets on mine due to MHD and having the old msd80 DME. coil packs and sparkplugs all shocks and struts radiator vacume lines starter alternator transmission solenoid valves and various valvebody seals

oh yea and I think my fuel system is showing signs of cramping out

also my IBS battery sensor is messing with my oil level readings

and still have a stock charge pipe

today will install aftermarket oil cooler my oem oil cooler lines are leaking
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weebles weebles is offline
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Join Date: Jul 2012
Car: 135i
Default 06-12-2020, 07:46 PM

Welcome to the world of modified cars.
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lituga lituga is offline
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Join Date: Nov 2018
Car: e61 535i xDrive
Default 06-15-2020, 11:49 AM

yeah the gaskets+plastics are a real disappointment. The engine could have been so much more reliable for a matter of a few $100's per unit/ Then again no one else builds a boosted inline six anymore besides Merc and LR very recently

For comparison look at the 2JZ or 99x Turbo Mezger which are both similar displacement and can take way more abuse


'10 535xiT, 104k, pure stg 2, dci, forge cp+bov, britalman muffler, extremecontact sports, stoptech slotted, custom mhd
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Vorsprung_CJB Vorsprung_CJB is offline
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Join Date: Jun 2011
Car: 135i N54
Default 06-15-2020, 03:41 PM

This is exactly what I've been telling people for years when they ask about N54.
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