Owning a 320si


Matski

Staff member
Premium
"5, 6, 3, 5, 5, 3, 3, 1 ... and now ..."

So, after about a year of thinking about it I recently replaced my ol' E87 120d with something new. The 1-er has served me well, but an accumulation of faults and bodywork damage made it simply not worth the hassle or money, I've agreed to give it away to chap that want's something to work on... he will certainly get good value for money :D

After mulling over lots of E numbers I've never had before, I couldn't shake a certain niggling desire... a desire that's roots started growing back in 2006 whilst watching Andy Priaulx (and Jorg Muller) battle against Augusto Farfus (then driving an Alfa Romeo), for a FIA World Touring Car Championship title... yup I've not been able to shake off wanting to buy an E90 320Si.

Having kept an eye out for any of the 500 originally sold here popping up for sale, it became clear pretty quickly that despite less than 200 remaining on the road, they weren't actually that scarce. The bigger problem was finding one with a sensible history that was in good condition... and most preferably, one whose engine I could determine the history of - since, as I'm sure will get pointed out - the N45B20S has a habit of eating it's cylinder liners. Well after a little over a year, and having seen several examples, and considered only two, I settled on one.

IMG_7070g.jpg


IMG_7071g.jpg


IMG_7072g.jpg


IMG_7074g.jpg


IMG_7076g.jpg


IMG_7078g.jpg


IMG_7080g.jpg


So far, I'm very happy with it. I was going to wait until I'd had chance to clean it before posting, but the weather's been crap.

It's NOT a relaxed drive, nor is it that fast, and it's worlds away from the diesels I've driven for the last 10 years. Having had two M20B20 engined BMW's before (i.e. 2 litre inline 6's), it's not an unfamiliar experience, the primary difference being that at lower revs the sixes were still buttery smooth - this is jittery and torque-less. Once it's warmed up, and you can push the revs further, it starts to make a lot more sense - the power comes in and becomes way smoother, and not unlike the old 2 litre sixes were - with the benefit that the N45 feels like it actually starts pushing out more power, whereas the M20B20 sixes didn't really offer much other than aural stimulation when pushed towards the redline. Handling wise it feels very stable, and the ride is perfectly fine on smooth roads. On the 'fun' roads around where I live, the road surfaces are ****ing garbage it's still fairly composed, but it's not comfortable, but outside of big soft SUV's I'm not sure what would be on these roads. It doesn't crash over the bumps or through the pot holes, but it doesn't absorb much of them either!

But, I didn't buy it because of how it drove, I bought it because as a touring car fan, and a BMW enthusiast, it is a special car - there were no doubt safer choices, faster choices, and better value choices, but the fact is, nothing else I was considering was anything other than just another Bimmer, in a sea of common Bimmers. I haven't felt this happy just to be driving a car since my E24.
 
So, after about a year of thinking about it I recently replaced my ol' E87 120d with something new. The 1-er has served me well, but an accumulation of faults and bodywork damage made it simply not worth the hassle or money, I've agreed to give it away to chap that want's something to work on... he will certainly get good value for money :D

After mulling over lots of E numbers I've never had before, I couldn't shake a certain niggling desire... a desire that's roots started growing back in 2006 whilst watching Andy Priaulx (and Jorg Muller) battle against Augusto Farfus (then driving an Alfa Romeo), for a FIA World Touring Car Championship title... yup I've not been able to shake off wanting to buy an E90 320Si.

Having kept an eye out for any of the 500 originally sold here popping up for sale, it became clear pretty quickly that despite less than 200 remaining on the road, they weren't actually that scarce. The bigger problem was finding one with a sensible history that was in good condition... and most preferably, one whose engine I could determine the history of - since, as I'm sure will get pointed out - the N45B20S has a habit of eating it's cylinder liners. Well after a little over a year, and having seen several examples, and considered only two, I settled on one.

IMG_7070g.jpg
IMG_7071g.jpg
IMG_7072g.jpg
IMG_7074g.jpg
IMG_7076g.jpg
IMG_7078g.jpg
IMG_7080g.jpg


So far, I'm very happy with it. I was going to wait until I'd had chance to clean it before posting, but the weather's been crap.

It's NOT a relaxed drive, nor is it that fast, and it's worlds away from the diesels I've driven for the last 10 years. Having had two M20B20 engined BMW's before (i.e. 2 litre inline 6's), it's not an unfamiliar experience, the primary difference being that at lower revs the sixes were still buttery smooth - this is jittery and torque-less. Once it's warmed up, and you can push the revs further, it starts to make a lot more sense - the power comes in and becomes way smoother, and not unlike the old 2 litre sixes were - with the benefit that the N45 feels like it actually starts pushing out more power, whereas the M20B20 sixes didn't really offer much other than aural stimulation when pushed towards the redline. Handling wise it feels very stable, and the ride is perfectly fine on smooth roads. On the 'fun' roads around where I live, the road surfaces are ****ing garbage it's still fairly composed, but it's not comfortable, but outside of big soft SUV's I'm not sure what would be on these roads. It doesn't crash over the bumps or through the pot holes, but it doesn't absorb much of them either!

But, I didn't buy it because of how it drove, I bought it because as a touring car fan, and a BMW enthusiast, it is a special car - there were no doubt safer choices, faster choices, and better value choices, but the fact is, nothing else I was considering was anything other than just another Bimmer, in a sea of common Bimmers. I haven't felt this happy just to be driving a car since my E24.
Congrats, bud!

Classy spec, it is.

I am not as well versed regarding the 320si or the N45B20S engine as we don't get it here. Only thing I am aware of is what's been posted recently. Regarding the cylinder heads, is there anything pre-emptive that can be done to eliminate or at least mitigate it?
 
Classy spec, it is.

I wanted a Carbon Black one to be honest, but I wasn't going to pass up this one. Also the tint on the rear windows isn't to my taste, but thankfully in the flesh they appear less heavily tinted.

I am not as well versed regarding the 320si or the N45B20S engine as we don't get it here. Only thing I am aware of is what's been posted recently. Regarding the cylinder heads, is there anything pre-emptive that can be done to eliminate or at least mitigate it?

It's (slightly) bigger bore and shorter stroke (so specific pistons, rods and crank), compression ratio is slightly up, as is displacement (very slightly), it looses Valvetronic, and gains unique cams and valves... the cylinder linings were an aluminium alloy instead of cast iron, this is where the problems began... regarding pre-emptive action, mine have already been replaced with steel ones - this wasn't pre-emptive for the original owner, but it happened early enough that it was worth having the work done properly, and not just swap the engine for a unit of unknown status from an otherwise spares or repair car - which really was crucial.

It'll still be a high maintenance engine, the biggest problem I have at the moment is finding a suitable garage to service it.

As a random plus, it's way cheaper to insure than most of my other cars have been, which offsets the doubled road tax cost.
 
So, after about a year of thinking about it I recently replaced my ol' E87 120d with something new. The 1-er has served me well, but an accumulation of faults and bodywork damage made it simply not worth the hassle or money, I've agreed to give it away to chap that want's something to work on... he will certainly get good value for money :D

After mulling over lots of E numbers I've never had before, I couldn't shake a certain niggling desire... a desire that's roots started growing back in 2006 whilst watching Andy Priaulx (and Jorg Muller) battle against Augusto Farfus (then driving an Alfa Romeo), for a FIA World Touring Car Championship title... yup I've not been able to shake off wanting to buy an E90 320Si.

Having kept an eye out for any of the 500 originally sold here popping up for sale, it became clear pretty quickly that despite less than 200 remaining on the road, they weren't actually that scarce. The bigger problem was finding one with a sensible history that was in good condition... and most preferably, one whose engine I could determine the history of - since, as I'm sure will get pointed out - the N45B20S has a habit of eating it's cylinder liners. Well after a little over a year, and having seen several examples, and considered only two, I settled on one.

IMG_7070g.webp
IMG_7071g.webp
IMG_7072g.webp
IMG_7074g.webp
IMG_7076g.webp
IMG_7078g.webp
IMG_7080g.webp


So far, I'm very happy with it. I was going to wait until I'd had chance to clean it before posting, but the weather's been crap.

It's NOT a relaxed drive, nor is it that fast, and it's worlds away from the diesels I've driven for the last 10 years. Having had two M20B20 engined BMW's before (i.e. 2 litre inline 6's), it's not an unfamiliar experience, the primary difference being that at lower revs the sixes were still buttery smooth - this is jittery and torque-less. Once it's warmed up, and you can push the revs further, it starts to make a lot more sense - the power comes in and becomes way smoother, and not unlike the old 2 litre sixes were - with the benefit that the N45 feels like it actually starts pushing out more power, whereas the M20B20 sixes didn't really offer much other than aural stimulation when pushed towards the redline. Handling wise it feels very stable, and the ride is perfectly fine on smooth roads. On the 'fun' roads around where I live, the road surfaces are ****ing garbage it's still fairly composed, but it's not comfortable, but outside of big soft SUV's I'm not sure what would be on these roads. It doesn't crash over the bumps or through the pot holes, but it doesn't absorb much of them either!

But, I didn't buy it because of how it drove, I bought it because as a touring car fan, and a BMW enthusiast, it is a special car - there were no doubt safer choices, faster choices, and better value choices, but the fact is, nothing else I was considering was anything other than just another Bimmer, in a sea of common Bimmers. I haven't felt this happy just to be driving a car since my E24.
Congratulations, these limited versions have an intrinsic aura, even more so for their reason for being related to racing, I love the details and engravings that allude to it, I always saw those wheels with pleasure and desire.
The CFRP parts "engine covers " are they original from the factory? what a great detail ...
 
The CFRP parts "engine covers " are they original from the factory? what a great detail ...

Factory. since it has a different top end, I'm guessing the easiest solution for low volume production was to make something out of CFRP, rather than a different casting. It's part of a claimed 10kg weight saving, that also helps to move the CoG of the engine lower in the car - I'm not going to pretend I can detect that though :D

As for the BTCC... being trackside at Oulton Park in 2009 is really what got me into photography, and the trackside aspects of motorsport...

P5310736.webp


The 320Si was an integral part of that...

P5310816.webp
 
being trackside at Oulton Park in 2009 is really what got me into photography
It is quite a challenge and as you say a good school to photograph cars on a track and do it well, a lot of technique involved, not to mention the necessary to take pictures of the girls there
 
Congratulations Mat. Sounds like you've got a car that you will cherish and enjoy. Probably more fun than most new cars today.
 
Congratulations!

How has the interior held up?

Mostly, very well. Small amount of wear on the gear stick, but the leather (I actually have no idea if its leather or not!) is spot on, carpets are spot on. Steering wheel clearly isn't new, but is hardly worn (since it's a standard M-Sport version I might replace it at some point). The cubbyhole cover in the central armrest is worn on the edge, and there's no damping to the open/close action, which there was in my 1-er, so again, I might seek to replace the cover and hinge mechanism at some point.

The worst thing is the lens over the interior light drops off occasionally! It's missing one tiny moulded in plastic lug about 2mm wide, that's snapped off, should be easy enough to replace.

It's done about 3000 miles per year on average, wear and tear is really minimal. I've lined the high wear areas in the drivers foot well with protection film today, we've got lousy weather and I'd already trod a bunch of mud into the carpet so I wanted to get that sorted quickly.

I like the fact the car doesn't stink of air freshener or cleaning products, there's nothing being 'masked' and that's another indicator to me that it's simply been well cared for, rather than valeted before sale.


It is quite a challenge and as you say a good school to photograph cars on a track and do it well, a lot of technique involved, not to mention the necessary to take pictures of the girls there

Well, I'm not going to pretend to be good at it, but I do enjoy it.. and I'm going to shamelessly plug my flickr account :D www.flickr.com/mattstokes1/albums


____


Biggest complaint so far... no Dip Stick! :D I know this is nothing new to BMW owners of the last 20 years, but I'm hypersensitive to the oil condition, and I really want to know the level is correct without relying on the sensor. I also want to get an OBD set-up that gives me a live oil temperature because the difference in engine smoothness between cold and hot oil is significant.

I had a warning light the other day, relating to the emissions control system. I think this was a by product of letting it warm up at idle, which I only did to obtain an oil level reading, but in any case, after a good drive out it switched off and hasn't come back.

I've also started running it on 99 RON fuel, since my E36 (last petrol Bimmer I had) seemed to run much better on it. In the UK that's £1.50/litre where I am, or around $10/gallon... and so far it's returning 22.1mpg... but I didn't buy it for economy :D
 
Biggest complaint so far... no Dip Stick! :D

Are you absolutely sure there's no dipstick? I was reading another forum recently, and somebody made this complaint about new BMWs, until a BMW service technician pointed out the dipstick is still actually there, just harder to find.
 
Are you absolutely sure there's no dipstick? I was reading another forum recently, and somebody made this complaint about new BMWs, until a BMW service technician pointed out the dipstick is still actually there, just harder to find.

Reasonably sure. I had a good ferret around under the bonnet - assuming there would be one - but couldn't find one, checked the manual and it only talks about using the OBC to get an oil level. I'm checking it every journey at the moment to see how consistent its reading is, and it seems pretty good to be honest.
 
Reasonably sure. I had a good ferret around under the bonnet - assuming there would be one - but couldn't find one, checked the manual and it only talks about using the OBC to get an oil level. I'm checking it every journey at the moment to see how consistent its reading is, and it seems pretty good to be honest.

Maybe they brought back the normal dipstick (in addition to keeping the electronic one) on later generations of BMW because people complained.
 
Maybe they brought back the normal dipstick (in addition to keeping the electronic one) on later generations of BMW because people complained.

It's been present on some E90's depending on the engine, I'm pretty sure the diesels have one, for example.

I think I'll manage with the electronic one, but what I'm keen to get is something to indicate oil temperature. Have considered something like this...

1620744045000.webp


.. though it goes against wanting to keep the car original, and they don't seem to be for sale anymore anyway.

Something like a 'Carly' will probably send the information to an app on my phone, but it's subscription based, and I'd like something 'integrated'.
 
It's been present on some E90's depending on the engine, I'm pretty sure the diesels have one, for example.

I think I'll manage with the electronic one, but what I'm keen to get is something to indicate oil temperature. Have considered something like this...

1620744045000.jpg


.. though it goes against wanting to keep the car original, and they don't seem to be for sale anymore anyway.

Something like a 'Carly' will probably send the information to an app on my phone, but it's subscription based, and I'd like something 'integrated'.
You can buy one tablet and mount it on the dashboard, buy an OBD interface and upload the software to the tablet and you can customise it to show whatever info from the car you want. The only issue is that the OBD should be constantly plugged to the car.
 
You can buy one tablet and mount it on the dashboard, buy an OBD interface and upload the software to the tablet and you can customise it to show whatever info from the car you want. The only issue is that the OBD should be constantly plugged to the car.

I'll certainly take recommendation on the software/hardware for the OBD if you have any. The tablet route is one I'm already considering for infotainment anyway, so that would work.

It's a none issue with a bluetooth OBD plug.
Yes but with the E90 it's down in the left to the foot rest and you can hit it when you get in and out of the car and you can brake the socket (this happened to me once).

The socket is basically attached to something behind the trim cover, and sits on the end of a cable. It's easy enough to detach the port and have it lose behind the trim panel to get a bit more clearance. I wouldn't want anything sticking out, as Crunch says - I'd probably end up breaking it off the first time I got out of the car!
 

Thread statistics

Created
Matski,
Last reply from
Giannis,
Replies
82
Views
8,040

Trending content


Back
Top