ALPINA B10 BITURBO

[S38B38]

Hello all.. its been a while since i was around here,,

But i was reading about another B10 BT here,, a really nice looking one ,, and stories started to flow about its performance,, vs other cars,, well,, we can go all night along discussing that,, but just one thing,, a E46 M3 vs oem B10 BT do not have a chance on higher speed , thats a fact,,
oem B10 BT goes to 291-295 real speed , thats 320km on the speedo or 200mph

I have been many times on 300 km / 186 mph (the traffic have always been the main issue that i haven´t pulled further)) that speed is 279 km on my GPS or 173 mph,,


Also some talks were about the engine in the 445@507 car,, ok as i have rebuilt my engine,, and took the motor+box out of the car .. i can share my experience,, if you are interested??? Ok,, then lets go,,
after i took of the valve-cover to have an inpection, i discovered that the camshaft was really worn,, worst on cyl 1, the reason == one of the banjobolts ((2 of them)) got loose ,,so the oilpressure was not optimal,, and the cam got screwed up,,

well i decided to also change ALL bearings in the bottom of the engine ,, so lets start the thread

All parts were cleaned as well as i could,, underneath and inside

Engine and gearbox came out.....

It came as a result that the crankshaft was worn 5/100 of a mm ,,ALL MAIN BEARINGS,, from 1-7 and also conrod bearing 1-6
so a turn of a 0.25 mm was the conclusion,, that was taken ,,
the backlash of the crank was over 1.0mm and that is not uncommon on a car with heavy clutch.. an Automatic M30 can drive to the moon without a backlash-problem

all seals,, gaskets,,bought new from GOETZE ..Federal-Mogul - Goetze Cylinder Head Gaskets

bearings ,, was from CLYCO

and i decided to buy from ........ BMW Performance Parts, BMW Race Engines, BMW Service, Auto body, and Original Parts ............

the cylinder head was shaved 0.10mm

MLS 0.70" /1.778mm headgasket and ARP studs,,
pistons were like new and cylinder walls also,pistons are oem ALPINA/Mahle..

As you can see
3.5L ,,,,,,,,,,,7.2 cr ,,,,,,,,,,,,, and B10


keep in mind that the compression was so low back in the days to avoid detonation on low rpm pull.. the 2002 turbo have 6.9 in CR,, today the data-system can control almost everything to avoid damage ,,

Here is an intake port from an oem 3.5L M90.. (pre M30) the gasket is from my engine ...... some difference as you can see


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ALPINA engine mounts on the exhaust side,,, NOT oem M30 BMW engine mount







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M70 starter (( more powerful vs oem M30 )) and a direct fit




ALPINA B10 BITURBO engine code........... B7/5 and the nr of the car ((0346))
i am a big fan of number matching things ,, and i love that ALPINA have numbers also in mind when they are producing cars


The sump...


the conrods,,,,,, oem M30B35 afaik



Ok,, fastening down the Cylinder head,,,



MLS studs on .,,


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OIL pump .. and timing OK,,


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On the B7/5 engine ,, the rocker-arms are strength tested,, and X-rayed, then numbered
,, the result is like this..








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The intake port.......



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OIL drain,, and coolant drain ((2)) on exhaust side



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Exhaust port,,
I think oem ,, because on the other M30B35 the port was very similair


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TURBO,,, both turbos were disambled,, cleaned up.. the rear manifold had 2 cracks,, ((not uncommon on a B10 BT)),, my friend who have a VERY big experience with turbos ,, was stunned how the condition was ,, the front turbo had a small backlash,, but bearings and seal was OK,,,,,








((wtf,,,,,,,,, a welding line... yes,, ))
ALL B10 BT rear manifolds will crack at some time,, it is importand also to buy new types of studs and nuts [[ i didnt,, because i didnt knew at that time.but the nuts are new ]]









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Here you can see the main reason for special refabrication on engine mounts on the exhaust side










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ALL KINDS of shields,,, a stunning engineering IMO,, and thought all way through

Just for you,,, and NOT USEFUL information,,

ALPINA and M/// Gmbh share almost nothing in common,, back in the days when M/// motorsports were producing M49 in the E9.. one of the greatest 6 cyl racing engine ever created,, ALPINA went in to a different way,, they started to BLOW some big sixes,, and the result was a lot more than impressive.. the E28 B7 is IMO the best turbocharged ALPINA car they made ... not the greatest,, but proberbly the best,, why is that,, because,, this car do not suffer for such a violent heat problems that can cause the B10 BT.. when the B7 was made ,, the B10 BT was not made and the 24v technology was not ,,then, gone into production by BMW ,, so the B10 BT is the last dinosaur,, ALPINA made.. a ,,very very spectacular car made from the old M30 design with the best technology that day,, but sadly .. so much money spent on an old engine,, a 12v that was in the heyday,, if ALPINA had licence to use the M88/S38 or even the new m50 24v as a start.. the result could easily been 450 ps (( remember that S38 is just a developed M30 with a 100+ ps top))

[S38B38]

Here we have a gearbox comparison,,, the G420 6speed ,, to the left and the G290 ALPINA B10 BT gearbox
the G290 was also offered in the Jaguar XJR .. as XJ (x300) and XJ40
As far as i also known the G290 was offered in some USA pick-up trucks

Really strong gearbox,, perhaps the strongest from Getrag in a family-car ever offered



The flange is 90 mm between bolts .. on the G420 and is the second large Guibo from BMW/Getrag ,,
from this generation ,, the G290 and the G560 E31 850 ((M70 manual)) have 95 mm between bolts
but sometimes the G560 breaks down,, i dont know why,, but I have never heard of a G290 in a B10 BT broken ((i know they are a lot less ,, but it sounds well))





EVERYTHING on the B10 BT is the biggest strongest,, the marked developed in these days,, oilcooler on the diff,,,,,,, how brilliant is that

When using ARP studs on a M30B35 ,, you must drill a 20+mm hole in this aluplate for the nuts,, and also on the first bolt line ,,you must grind some few mm on the valvecover,,







Here is the Intercooler ,, 66 cm x 31 cm x 5.5 cm



and pipes










The flywheel.............. ELEPHANT size ,, and it is not heavy,, it is like nothing else i have seen on a 4door saloon car ever before,, million pounds !!!!!!!!! the clutch is the BIGGEST/STRONGEST twinmass clutch,, produced ,, even to day,, i tried to search the internet for an upgrade,, but came always to the same solution,, NO one offers a twin-mass heavyduty performance upgrade for BMW M30,,,,,,,,,,, over 700nm or 520 lbs/ft

i sent Rob Levinson at UUC an email and asked about the size of the flywheel .. and he gave me this answer ,,

The only reasonable answer I can think of is that sometimes turbo like to have more drivetrain resistance to develop boost faster. You may notice that boost builds quicker going uphill,

if a singlemass flywheel were used MANY options is available,, and many Swedish B10 BT owners have done that swap

Driving a B10 BT,, feels it is a sweet power delivery ,,no huge turbolag
and the engine is very smooth on idle ,, but the flywheel also helps







And the gearbox on,,,







In to the car



Exhaust.. from O2 sensor,, is 2 x 63 mm 304 Stainless steel ,, and gives a more crispier sound vs oem,, i have NO cats,, NO middle section,, just the rear silencer .. custom made aka Eisenmann replica.. so restriction is minimal





[/QUOTE]

My engine is remapped by Mr-X ,, a well known Danish tuner ,, it is blowing 1.0 bar or 14.5 psi
((oem 0.8 bar.. 11 psi)) my car was dynoed ,, as if i remember correctly,,
365 WHP and 554WNM or 420Wlbs-ft of torque.. thats impressive IMO,, but after the rebuild,, the car felt more quick,, these figures are something around 430 hp and 650nm,

as i had the same problem as Simon HAVE,, the engine is blowing by the manifold,, the studs are almost for sure broken ,, and it is possible he have also a broken rear manifold

i never to a drop-clutch launch or anything like that drifting,, spinning tires etc etc ,, i just like to take off in smooth way ,, and then floor the bitch.. and passes almost everyone ,, yes the car catapults away in an effortless brute stimulating way.. many petrolheads do not understand..that an old tech 3.5L 12v ,,ok its turbocharged can do such a pleasent movement,,

As far as i know,, these are the only pictures,, that have been shown on the web of a B10 BT engine

[Nobby_N]

Someone's going to be hard reading this thread!

[snakebrain]

Epic.

[leeparkes]

Someone's going to be hard reading this thread!

Im one of them.

Very nice build.

[Jimbob]

Interesting read, thanks! Lovely colour too

[S38B38]

My favorite picture,,,

[Kedge]

Awesome work.

Is that an original colour or has it been resprayed?

[S38B38]

Awesome work.

Is that an original colour or has it been resprayed?

I bought the car like this..... thats WHY i bought it

oem color is Granit-Silber.. and car is 346@507

[darren_mk]

Great pictures!

Thanks for sharing

[ajay]

Very interesting iv'e learnt quite a bit there, nice re build too. One thing though, why would anyone think a normally aspired e46 m3 (3.2ltr)would keep up with a turbo charged (3.5ltr)?

[S38B38]

Very interesting iv'e learnt quite a bit there, nice re build too. One thing though, why would anyone think a normally aspired e46 m3 (3.2ltr)would keep up with a turbo charged (3.5ltr)?

A Dutch guy ,, Erik T.. owns/had a 3.2 E36 M3..

you should see these video he posted,, vs E46 M3 and E39 M5

I am stunned how well the 3.2 performs,, but the E36 is lighter vs E46

but when you come up to really high speed the BT would simply

walk away,, the same with E39 M5







in the last video ,,look how fast the ALPINA Z4 really is,,, its almost break even,, but do not have to break the wind

[Rosc0PColtrane]

Cracking thread. Nice photos. How about a video of it on full chat?

[S38B38]

I think you ruined Simon's wife's Valentine evening with this thread.

Cracking photos and nice car is that Dakar yellow?

Thanks,, that was not the intention to do,, but i sent him a pm,, and didnt got a answer so i made my own thread,,

He have a VERY delicate car,, with the REAL ALPINA interieur imo,, these ALPINA/RECARO seats are a must in B10 BT,, and when i got my car i was almost crying ,,out loud,, because my car was not fitted with these seats,,

no the color is quite UNIQUE,, FE 102 Ferrari-Yellow
and to my knowledge,, there is just 1. car in the entire ALPINA history that left the factory with that color..

E31 B12 5.7


the rarest ALPINA ever made

[Simon13]

there was a factory e36 B8 touring in Dakar yellow no. 22


http://www.alpina-archive.com/?p=139&nm ... ouring-022


Not quite, when i read your PM you had already posted this thread! The photos are great for reference but unlike you i shall not be taking the engine out for a rebuild on mine as its in fine fettle imo

[S38B38]

there was a factory e36 B8 touring in Dakar yellow no. 22


http://www.alpina-archive.com/?p=139&nm ... ouring-022


Not quite, when i read your PM you had already posted this thread! The photos are great for reference but unlike you i shall not be taking the engine out for a rebuild on mine as its in fine fettle imo

I have seen that car...

[capri_rob]

My favorite picture,,,

Can't ever see me buying a yellow car but bloody hell that looks the t1ts

[S38B38]

Can't ever see me buying a yellow car but bloody hell that looks the t1ts

Thank you very much.. for your kind words,,

But,, as the car is Yellow,, the attention it gets on the mainland is often colossal ,,@ the ring as we visit everytime when we get to the mainland .. the police is/was often chasen us as a getaway-car.. not joking at all .. it was the same thing with the cabrio,, last summer we were totally left alone ((to my big surprice)) i guess the are started to remember the color and license-plate

in traffic.. guys on performance automobiles ALWAYS want to take a sprint..

[snakebrain]

many petrolheads do not understand..that an old tech 3.5L 12v ,,ok its turbocharged can do such a pleasent movement

in the last video ,,look how fast the ALPINA Z4 really is,,, its almost break even,, but do not have to break the wind

One of the things that's really impressive about the B10 biturbo is that it produces that immense performance despite being about as aerodynamic as a barn door (in modern terms at least)...

[Simon13]

it really is epic, such a big heavy car shouldn't be that quick. The engine makes light work of the weight

[B7]

it really is epic, such a big heavy car shouldn't be that quick. The engine makes light work of the weight

This is exactly how i felt when I drove a Bentley Turbo RL. Jesus, all that weight but shite, did it go! It really was incredible. No other car has made me smile for so long!

Cars of this ilk, need to be experienced.

[S38B38]

Thank you guys ,,

but if we continue about the glory memories of the B10 BT,, and similair cars from this decate,, as i have driven most of them,, in the same catagory, and owned them also ,, except, OMEGA/CARLTON

Back in the days,, around 1990.. think about driving a Porsche turbo,, and someone is passing you flat-out,, by a 4door sedan

i guess that must have been the top of being humiliated at that time

The B10 BT is NOT as firm car as the E34 M5 imo,,,
it is only a long-distance locomotive ,,and in a hurry,, real hurry
AFAIK the Carlton is quicker,, but the BT is faster on higher speed
and have a slightly higher top speed,, but just....

the B10 BT strongest move is midrange accleration,,
driving in 4th in 2100rpm @ 100km ,, smack the bitch,, and things start to pass by in an effortless force all the way to 250 and then in to 5th,, and if you have a clear road ahead 320 is in the horizon,, sooner than you think,, but after 300 km,, naturally moving a brick as the E34 is,, takes not a split-second,, a little more than that


OT........ the 4th gear and 5th gear are the same as 5th and 6th in the 6 speed gearbox,, and diff-ratio is 3.15,,,,,,,,,, the same as in E39 M5

[Simon13]

they get to 290kmh with absolute ease i can attest to this. Theres plenty around now that will give a bi-turbo a kicking. Maybe not with 4 doors but theyre out there. I find no one in tastys cars will give it go as its an old black L reg 5 series.

Officially the carlton is faster car! by about 1mph top speed.

From what i can gather which might seem odd but an e34 m5 is a fair bit cheaper to run than a bi turbo just on parts prices alone

[Simon13]

i'm sure i've seen it at the ring a few years ago also the yellow monster.

[S38B38]

i'm sure i've seen it at the ring a few years ago also the yellow monster.

was you in a UK B10 V8 ,, silver or iceblue staying at Ringhaus .. 2008 ,, if so

This is excatly these days,, when the picture is taken

[Simon13]

I'd of been in this, C2 2.7 alpina