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#418851 - 9th Jul 2010 7:55pm Supercharger for BMW
Neil_c Offline
Smartchild

Registered: 27th Sep 2009
Posts: 417
Loc: birkenhead
I've got a heavily modified E36 that's had a fair bit of work done to squeeze every last bit of HP from it including replacement cams, ECU and exhaust. It's not bad for it's age and is still capable of going off the speedo 155mph + (or so i've heard). It used to belong to the guy who owned DRP motorsport in Hoylake.

I was just wondering if anyone has had any experience with superchargers for these cars? I've seen some online for about 5K but it would only put about a second less on the 0-60mph (which it can do in about 6 secs). For 5K, i was also worried about it being directly behind the bumper in case it had a little smash.

What does everyone make about the blowers that you can get off ebay that go on the air intake pipe? Are they crap?

Thanks,

Neil.

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#418856 - 9th Jul 2010 8:15pm Re: Supercharger for BMW [Re: Neil_c]
Sanchez Offline

Wiki Veteran

Registered: 17th Dec 2003
Posts: 8019
Loc: my house
junk mate, speed is a question of money, Id sell the car and buy something from the factory thats quick wink
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#418861 - 9th Jul 2010 8:32pm Re: Supercharger for BMW [Re: Sanchez]
DavidB Offline
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Registered: 7th Dec 2003
Posts: 5591
Loc: Bebington, Wirral
Do you mean 12v electric superchargers?

I'd also go down the M3 engine route. I wanted to do this to a 2002, but was beyond my skills and just lost interest.
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#418863 - 9th Jul 2010 8:40pm Re: Supercharger for BMW [Re: DavidB]
Neil_c Offline
Smartchild

Registered: 27th Sep 2009
Posts: 417
Loc: birkenhead
yeah the 12v electric ones, are they crap I take it?

The good thing about getting factory is that you don't have to get mod insurance. I suppose the car is ageing and not worth spending a great deal of money on.

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#418866 - 9th Jul 2010 8:49pm Re: Supercharger for BMW [Re: Neil_c]
chris_gilly Offline

Forum Addict

Registered: 15th Feb 2009
Posts: 1950
Loc: tranmere
bollox neil, restrictive at the best!

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#418868 - 9th Jul 2010 9:17pm Re: Supercharger for BMW [Re: chris_gilly]
Neil_c Offline
Smartchild

Registered: 27th Sep 2009
Posts: 417
Loc: birkenhead
saw this one: ebay If only 15 would make the car go faster!

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#418884 - 9th Jul 2010 9:59pm Re: Supercharger for BMW [Re: Neil_c]
chris_gilly Offline

Forum Addict

Registered: 15th Feb 2009
Posts: 1950
Loc: tranmere
bollock bud, it will restric more than anything!

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#418901 - 10th Jul 2010 12:03am Re: Supercharger for BMW [Re: chris_gilly]
Neil_c Offline
Smartchild

Registered: 27th Sep 2009
Posts: 417
Loc: birkenhead
and cause the alt to have to work harder. I love the way it comes with a switch to wire straight to the battery lol.

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#418912 - 10th Jul 2010 2:29am Re: Supercharger for BMW [Re: Neil_c]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9559
Loc: Birkenhead
I also like one advert that claims it extends engine life think

The electric ones will improve power at lower revs but haven't got the power at higher revs. I am surprised nobody has brought out a hybrid system, electric and pulley driven, as each counteracts the other's shortcomings but turbos seem to be the order of the day.

I wonder if anyone has come up with an active exhaust extraction/decompression system? Turbos must increase the pressure at the exhaust, this is an inefficiency which must be similar to the power required for a supercharger.

I laughed at another gimmick where one was powered from the vacuum line - this would mean you were extracting air from the vacuum line and then pumping air in before it, overall this has got to lose power not gain, alright if you just want a "shiny" under the bonnet but no good for Santa Pod.
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#418940 - 10th Jul 2010 10:35am Re: Supercharger for BMW [Re: diggingdeeper]
Neil_c Offline
Smartchild

Registered: 27th Sep 2009
Posts: 417
Loc: birkenhead
The one thing I find mad about the e36 is that it constantly heats the mirrors, even if they need it or not. I reckon that would effect fuel consumption by a few miles per tank of petrol.

As for snow, rear wheel drive is poo. Had to sit the girlf in the back seat for a bit of ballast at the start of the year!

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#418943 - 10th Jul 2010 10:55am Re: Supercharger for BMW [Re: Neil_c]
sean Offline
Smartchild

Registered: 26th Jun 2005
Posts: 541
Loc: prenton
sell the beemer and get a scooby or an evo

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#418946 - 10th Jul 2010 11:09am Re: Supercharger for BMW [Re: sean]
Neil_c Offline
Smartchild

Registered: 27th Sep 2009
Posts: 417
Loc: birkenhead
I have thought about it but they'll all do about the same top end and whislt the sub and evo are between 1-2 secs quicker on 0-60; I get 35mpg, they'll struggle to do about 20 - 25mpg. Plus insurance, tax and servicing are more.

For a car I drive about once a week, it's not really worth it.


Edited by Neil_c (10th Jul 2010 11:10am)

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#418948 - 10th Jul 2010 11:17am Re: Supercharger for BMW [Re: Neil_c]
StuyMac Offline

Wiki Master

Registered: 24th Nov 2003
Posts: 12002
Loc: Wirralshire
Electric superchargers are junk on the whole. They can do something for very small engined cars where the air demand is quite low, but on a big cc car they cannot keep up with the air demand, and cause a restriction in the intake.

What BMW do you have? If your knocking on the door of 155, then you are already at M3 speeds omg

Id think about spending money on suspension / brakes and keep the car normally aspirated as it will be far more reliable.
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#418956 - 10th Jul 2010 12:31pm Re: Supercharger for BMW [Re: StuyMac]
Neil_c Offline
Smartchild

Registered: 27th Sep 2009
Posts: 417
Loc: birkenhead
It was orginally a 323 / 2.5 M52 engine. It produced 218bhp last time it was tested. I'm not sure if the gearbox is original, although Getrag boxes were fitted on e36's. It's had a short-shift kit fitted. Haliwell Jones seemed impressed with it for the car's age last time it was in.

It's had Bilstein suspension on it since almost new. The garage that modded it never touched any part of the air intake so it's all standard. The exhaust is 328 type, dual right the way from the manifold.

Optimax does make a noticable difference to performance.


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Edited by Neil_c (10th Jul 2010 12:45pm)

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#418959 - 10th Jul 2010 1:17pm Re: Supercharger for BMW [Re: Neil_c]
_Ste_ Offline


Wiki Master

Registered: 7th Aug 2005
Posts: 15985
Loc: New Brighton
Originally Posted By: Neil_c
The one thing I find mad about the e36 is that it constantly heats the mirrors, even if they need it or not. I reckon that would effect fuel consumption by a few miles per tank of petrol.

As for snow, rear wheel drive is poo. Had to sit the girlf in the back seat for a bit of ballast at the start of the year!


A set of decient tyres will sort that, my e36 has some kind of electrical fault atm which is quite annoying, when i brake the stereo turns down, when i accelerate it turns up! omg Oh, and the windows won`t go up or down once the engines been started???
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