Methanol injection and Nitrous installed

[Happy]

Originally Posted by Purplefade

Ha - I know that feeling! It’s totally a love hate... mainly me hating that I love it so much!

The E53 has a spell on me!

Originally Posted by Purplefade

I wonder if you could pull the shafts and diff gears and have the shaft heads cut back and say “41” spline ends welded on and “41” spline diff gears cut - would cost a pretty penny for sure but I’m sure would add some strength... but there’s still the trans and transfer case to contend with... and I’m sure any mods to it would cost more than another good used E53

Never opened the bottom end of one yet, but I’d be curious if you could main girdle a 4.4/4.6, hmmm...

I am sure BC and I have bought a few used E53’s with our obsession.

[bcredliner]

Originally Posted by Happy

BC, there has to be a way to build it!

Make sure you take a look at your main bearings!

I can get it there but I'm about 99% sure it would be in pieces before 1 hit on the dyno is complete.

There are two other issues other than weight that make the 4.6 not a good candidate for 700HP. It won't result in the 0-60 times of current day 700HP options. The loss of HP from crank to wheels is 20-25%, the transmission is only a 5 speed and the 4 wheel drive ratio front to rear is fixed.

The X5 is not a common hot rod so there aren't heavy duty parts like pistons, rods or crankshaft in the aftermarket. So other than the top end parts that can be modified to facilitate 700HP everything else would be custom made. If the bottom end won't take it there isn't much that can be done about it. Then there is the issue of fuel delivery and tuning it properly. At that level of HP the list will go on and on. I see it as a no value based effort.

It would be wiser to take out weight and stay with semi reasonable boost. As mentioned after this next investment in the 4.6 I will sell it and start with an X5M that is more cubic inches and a platform that is designed to be reliable with a current stock output of 617HP and has up to date features. Then go with what Dinan offers unless BMW starts voiding the warranty for Dinan mods.

[Happy]

Originally Posted by bcredliner

I can get it there but I'm about 99% sure it would be in pieces before 1 hit on the dyno is complete.

There are two other issues other than weight that make the 4.6 not a good candidate for 700HP. It won't result in the 0-60 times of current day 700HP options. The loss of HP from crank to wheels is 20-25%, the transmission is only a 5 speed and the 4 wheel drive ratio front to rear is fixed.

The X5 is not a common hot rod so there aren't heavy duty parts like pistons, rods or crankshaft in the aftermarket. So other than the top end parts that can be modified to facilitate 700HP everything else would be custom made. If the bottom end won't take it there isn't much that can be done about it. Then there is the issue of fuel delivery and tuning it properly. At that level of HP the list will go on and on. I see it as a no value based effort.

It would be wiser to take out weight and stay with semi reasonable boost. As mentioned after this next investment in the 4.6 I will sell it and start with an X5M that is more cubic inches and a platform that is designed to be reliable with a current stock output of 617HP and has up to date features. Then go with what Dinan offers unless BMW starts voiding the warranty for Dinan mods.

I have seen a few X5M’s that are on steroids for sure! I don’t think you can go wrong.

I agree with tapping out after a certain amount of investment. The E53 V12 pretty much gives you and idea of what the end of the road would or could be, and I don’t think too many are going to commit that type of capital.

RMS did however get nearly 900hp out of a S62 though. When I would stop by to check out my E53, the sound those E39 would produce, was insane. Makes you wonder what the M62 is capable of.?

[EODguy]

Morgan has new N62 parts and new engines but I don't know if they have any modified performance parts.

They received their last shipment of N62 engines last year.

www.morgan-motor.com

Sent from my SM-A730F using Tapatalk

[bcredliner]

Originally Posted by Happy

I have seen a few X5M’s that are on steroids for sure! I don’t think you can go wrong.

I agree with tapping out after a certain amount of investment. The E53 V12 pretty much gives you and idea of what the end of the road would or could be, and I don’t think too many are going to commit that type of capital.

RMS did however get nearly 900hp out of a S62 though. When I would stop by to check out my E53, the sound those E39 would produce, was insane. Makes you wonder what the M62 is capable of.?

I should pay better attention. All this time and I just realized you have a 6 cylinder with manual trans. Everything I have posted relates only to a 4.6.

I would not try to get to 700HP using a stock internals M54 platform. The stock HP was around 200HP. Thats way too far away from 700HP.

With 12lbs of boost you have added 100-150HP. Meth increase will range between 10-20% depending on the octane of the fuel you use and the flexibility of the controller. And that assumes you have had it dyno tuned for the boost, have added bigger injectors, a higher output fuel pump and gone to colder plugs. A manual transmission is too easy to over rev the engine if you miss a gear and it is not possible to shift a manual transmission as fast as even a stock automatic.

I would add low restriction exhaust, headers if they are available and cutouts. When you increase the amount of air in always increase the capability of exhaust out. Thats always the first mod I do even if I am not going to mod the engine. Other than that I would enjoy what you have done and not go further. It is unique as is.

[Happy]

Originally Posted by bcredliner

I should pay better attention. All this time and I just realized you have a 6 cylinder with manual trans. Everything I have posted relates only to a 4.6.

No worries.

I would not try to get to 700HP using a stock internals M54 platform. The stock HP was around 200HP. Thats way too far away from 700HP.

You are correct 700hp on a stock M54 isn’t even doable. I think I was quoted between $20,000 to $25,000 for a build that can take 20+ lbs of boost. For me though.. Not happening! LoL..

Stock M54 is 230hp.

With 12lbs of boost you have added 100-150HP. Meth increase will range between 10-20% depending on the octane of the fuel you use and the flexibility of the controller. And that assumes you have had it dyno tuned for the boost, have added bigger injectors, a higher output fuel pump and gone to colder plugs. A manual transmission is too easy to over rev the engine if you miss a gear and it is not possible to shift a manual transmission as fast as even a stock automatic.

I am using 93 octane fuel. The controller kicks on the pump at about 2700 rpms and progressively delivers the meth all the way till redline. At redline the pump is at max flow. Like I said, I can blow through 2 gallons of meth quickly, and there is zero quench. Live data shows everything is in spec. The boost and meth was tuned on the track. It has larger injectors, fuel pump, and colder plugs.

I’ve always gone easy on the shifting, just to keep my gearbox and transfer case without abuse. But I bet’cha, I can get the shifts flowing with the 8lb flywheel, Kevlar M5 clutch, DSSR, and short shifter. I think could compete with an auto gearbox.

I would add low restriction exhaust, headers if they are available and cutouts. When you increase the amount of air in always increase the capability of exhaust out. Thats always the first mod I do even if I am not going to mod the engine. Other than that I would enjoy what you have done and not go further. It is unique as is.

I has slightly larger than 2 1/2 in. exhaust piping dual, with an x-pipe, and 3” muffler. Headers are available, but the gains are not worth losing my street legal status. I pass inspection with ease. Cutouts would be fun!

I totally agree with your last statement. And it is indeed quite unique. It’s funny to see people whip their heads when I pull into a parking lot, when they hear her coming. What’s even more funny is watching them search all over for a race car that isn’t there. When they realize it’s the E53, their expressions are hilarious. I think what does it is, the 21’s with the 285’s and 325’s. Those big ass wheels are a dead give away, plus she’s dropped 2”.

[Happy]

Originally Posted by bcredliner

With 12lbs of boost you have added 100-150HP. Meth increase will range between 10-20%.

If I remember correctly, RMS said we were getting about 14hp per lb of boost. 230hp+168hp+40hp=438hp. This math is using a 10% meth gain. If it were 20% gain on the meth, hp would be 478hp. I feel like a 10% gain is more realistic.