E39 M5 - twin supercharged

[s62]

scotty_d said:

Read that awsome trip thread a while ago what a car well done, hope it is all ok with the S/C

The SC is definately not OK

I´ll have to get a new one.

[scotty_d]

s62 said:

scotty_d said:

Read that awsome trip thread a while ago what a car well done, hope it is all ok with the S/C

The SC is definately not OK

I´ll have to get a new one.

Sorry ment to say hope it did not go in to the engine can see it has had better days. any idea what has caused it to sheer off like that? Compressor Seized up?

Edited by scotty_d on Friday 19th June 00:02

[s62]

scotty_d said:

Sorry ment to say hope it did not go in to the engine can see it has had better days. any idea what has caused it to sheer off like that? Compressor Seized up?

My best guess is bearing failure.

[Diesel Meister]

Yipes!

Good luck reinstating the missing 100bhp

[Marf]

s62 said:

Marf said:

Looks like that compressor wheel has shed a fair few chunks, I take it they didnt enter the engine

Just checked and no big pieces can get through the maf housing but
there was some metal "dust" in the intake. I will replace oil & filter asap.

phew!

[s62]

Diesel Meister said:

Yipes!

Good luck reinstating the missing 100bhp

You mean the missing 500hp - the car will only do weak 3000 rpm now
before it chokes

[RobCrezz]

Oh dear! wonder what happened! Hope you get it sorted soon.

Never seen one of them superchargers before, didnt realise they look exactly like a turbocharger with the exhaust turbine replaced with a belt drive.

[Diesel Meister]

S62 - I'd guessed

Rob - Rotrex Centrifugal SC. Nice increase in power with revs (ideal imo as the M5 is hardly lacking in off-idle grunt). More efficient than positive displacement as far as I'm aware. although I like the Whipple

Edited by Diesel Meister on Friday 19th June 15:05

[s62]

Was working on the car tonight and decided to clean the K&N filters.

Found alot of chunks of the impeller wheel on the inside of the air filter on the failed
SC side

Maybe the SC didn´t produce any boost near the end and the other one
was blowing air the wrong way through it?????

[Sf_Manta]

s62 said:

Was working on the car tonight and decided to clean the K&N filters.

Found alot of chunks of the impeller wheel on the inside of the air filter on the failed
SC side

Maybe the SC didn´t produce any boost near the end and the other one
was blowing air the wrong way through it?????

If the failed unit was low on boost, then yes, the pressure differential would force the air (and small parts) back down the pipe to the filter on the failed SC side.
Since the pressure before the SC failing was realtively equal, then the air would travel onto the intakes above the engine.
As soon as one side dropped off (aka failed) any air (and particals) would end up being forced back down the pipe to the filter as shown.

[stuart-b]

Sf_Manta said:

s62 said:

Was working on the car tonight and decided to clean the K&N filters.

Found alot of chunks of the impeller wheel on the inside of the air filter on the failed
SC side

Maybe the SC didn´t produce any boost near the end and the other one
was blowing air the wrong way through it?????

If the failed unit was low on boost, then yes, the pressure differential would force the air (and small parts) back down the pipe to the filter on the failed SC side.
Since the pressure before the SC failing was realtively equal, then the air would travel onto the intakes above the engine.
As soon as one side dropped off (aka failed) any air (and particals) would end up being forced back down the pipe to the filter as shown.

Very lucky then, and in some ways, better to run 2x rather than a single

[BoRED S2upid]

CommanderJameson said:

I like the mechanical stuff (vroomtastic indeed), but the original wheels, headlights and bonnet looked much nicer.

I will second that. What the OP has done to the mechanical is very impressive but I felt myself shouting stop when all the external mods were made. Bog standard with 600bhp would have been awesome.

[s62]

Started cleaning out the intake today:


A lot of oil and aluminium filings/bits came out of the bottom of the intercooler!

Decided to fast-forward the drying process:


Then it´s reassembling the front and install the new SC

[Progressive]

The ring pics are awesome. Get the back out!

[s62]

Here is the result of crappy Icelandic roads


The "nut" or whatever it is called that the coil sits on was broken off


New & better ones have been machined and will be installed soon.

I was attending a BMW meet here in Iceland when this happened - was passing a camera
van when I hit a hole in the road. The video hopefully turns out nice,
only have seen a small preview you can see here:
http://turbocrew.is/videogallery/video7.php

Also - here are some pics from the meet (taken by two of the Icelandic BMW club members),
nice mix of cars (rather many E30's though.... ouich):

[minimatt1967]

Like your E30's in Iceland then, some great looking ones in those photos

[robcouzens]

That car is SAVAGE!! Love the stealthiness of the set-up

[Don1]

RV048 looks interesting...

[Connor_scotland]

AWESOME thread

[stuart-b]

Don1 said:

RV048 looks interesting...

Yea, I don't think that modification at the front is anything to do with the air conditioning