Has anybody done a N54 rebuild/forged build??

[Phoenix]

Hi Guys,

As the title states, has anybody done a N54 rebuild or a fully forged build?

Considering taking on this mammoth money pit of an idea and hoping there's somebody else that has done it that I can reference along the way.

Many thanks!

 

[KrS24]

VAC Motorsport.

Prepare yourself.


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[akash]

Are you planning on boosting with a Single turbo kit

 

[Phoenix]

VAC Motorsport.

Prepare yourself.


Sent from my iDroid

:tiptoe:

Not sure if you saw my car is back in the shop, that car is a problem. That's why I'm looking at a full rebuild. Replace everything and there's less to break, right??

Been looking at their parts bud, even looked at Motiv's prices (Motiv are cheaper on JE Pistons), considering re-using my BMW rods and crank (They're forged anyway), and just add the Forged JE pistons and do some headwork.

I see CP pistons have a lower compression option, which will increase lag but allow for higher boost..... Still trying to work through the finer plans. Corillo rods would be nice, but then pistons and rods will come to $3.5k which is quite a bit.....

Would like the insert to be put into the block as well for strengthening purposes to push crazy power.....

Decisions, decisions.....

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Are you planning on boosting with a Single turbo kit

Yeup.... a BIG one

 

[akash]

I just saw the prices on the VAC site

 

[Acheron]

Your biggest issue will be to overcome the overly sensitive knock-sensor parameters as they stand in stock configuration. You will almost certainly pick up false knock after making significant internal changes.

Knock tables can be desensitized in the map, but to what degree is the biggest question. You would really need someone who knows what they are doing to re-calibrate these, assuming you stick with the stock ECU.

 

[Phoenix]

I just saw the prices on the VAC site

yeah.... it's a bit harsh, but top quality components are never cheap, and if the internals are forged, coils are upgraded (Okada Projects), block is strengthened and Port Injection is done right.... just add HUGE turbo for crazy power....

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Your biggest issue will be to overcome the overly sensitive knock-sensor parameters as they stand in stock configuration. You will almost certainly pick up false knock after making significant internal changes.

Knock tables can be desensitized in the map, but to what degree is the biggest question. You would really need someone who knows what they are doing to re-calibrate these, assuming you stick with the stock ECU.

I've been reading a few threads from the states with regards to what you've said above. It really is a gamble, agreed. Some guys get away with it, others don't. I'm wondering if it has something to do with forged pistons not expanding as much with heat and thereby there's a certain degree of piston slap within the cylinder which is interpreted as knock by the sensor?

Either way, it is indeed an obstacle as you've pointed out.

 

[akash]

Those Okada coils are made by Bosch :rollsmile:

 

[Phoenix]

Those Okada coils are made by Bosch :rollsmile:

So if one could get the part number you could actually order straight from Bosch themselves....

I LIKE IT!

 

[akash]

Those Okada coils are made by Bosch :rollsmile:

So if one could get the part number you could actually order straight from Bosch themselves....

I LIKE IT!

I think those coils have an amplifier on them, i could be wrong

 

[KrS24]

Before you draw up the numbers why take a drive in Fazil's 335i. Might just scare you into sticking under 600whp


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[Phoenix]

Before you draw up the numbers why take a drive in Fazil's 335i. Might just scare you into sticking under 600whp


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It's worth a try, I'm a little not well in the head though :skit:

 

[Ga-3M]

Before you draw up the numbers why take a drive in Fazil's 335i. Might just scare you into sticking under 600whp


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If you check Phoenix's sig, he's done 337km/h on a bike, don't think much is gonna scare him!!!:skit:

 

[Crash_Nemesis]

I just saw the prices on the VAC site

Heh heh heh...

I know all about it brother. Don't you worry.

 

[Woodies]

Hell yeah! Do eeeeeeet! I want to see N54 with a mothertrucker of a turbo on it!
337km/hr on a bike!!!!!!!!!!!!!! Yeah, don't think much going to faze you in a car.

 

[TBP88]

337kph in a bike? That's some forged brass ballas.

 

[Acheron]

Honestly I would forgo the internals upgrade and opt for a mid-600hp build, spending the balance on decent support modifications (something few single turbo N54 owners seem to do) like brakes, LSD, axles, suspension.

Taking a look around at the performance seen out of the various "bigger" N54 single builds touching 800-900hp, they simply are not putting down any better figures (besides on the dyno of course). I suspect this is down to a compromise in driveability as a result of factors like lag, unmanageable torque levels and general lack of availability of parts to cope with those sorts of numbers.

 

[Phoenix]

Honestly I would forgo the internals upgrade and opt for a mid-600hp build, spending the balance on decent support modifications (something few single turbo N54 owners seem to do) like brakes, LSD, axles, suspension.

Taking a look around at the performance seen out of the various "bigger" N54 single builds touching 800-900hp, they simply are not putting down any better figures (besides on the dyno of course). I suspect this is down to a compromise in driveability as a result of factors like lag, unmanageable torque levels and general lack of availability of parts to cope with those sorts of numbers.

I have noticed the same with regards to most owners not having supporting mods, the forged motor is merely one aspect of the build I am planning. Gearbox, flywheel, clutch, driveshaft, differential, suspension, brakes, wheels and probably chassis reinforcement will all form part of the build.

Power is useless if you can't put it down, I agree with you. This car will be a 1/2 Mile and 1km sprint car, not 1/4 mile racer, so I'll have more opportunity to use the excessive power up top.

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337kph in a bike? That's some forged brass ballas.

Some would say stupidity more than anything else bud... :rollsmile:

:withStu: