318iS Supercharged

[hoshy]

Hi guys,

Finally got the supercharger bolted on and boosting. So far it feels good but still got some way to go.

1. Fix hesitation problem
2. Charge cooling
3. Proper mapping session
4. Replace supercharger because of noisy bearing

I'll post some pics soon.

Ashley

[appletree]

Read you post on alex's thread and thats how mine feels, no real peak power just a good sconstant shove!!! all therought the gears, mine will spin up in second in the dry if you boot it and 3rd in the wet

might not be a dodgy bearing, you can hear mine wine over the exhaust which only has a sebrign back box so it is veryloud

[hoshy]

I'm surprised it's so noisy. Mine is the only noise you'll hear at 1200rpm if standing over the engine bay with the bonnet open. It's almost deafening. Still, it's not too too bad relatively speaking when on the motorway. I need to come see your car and then I'll know for sure I suppose

Do you know what yours boosts to?

[e30_Turbo]

Well done that man!

Lennies SC whined like a motherlover, sounded like an electric engine when he switched it on.

Pics pics pics....need I say more!

Fozz.#

[EDIT]

And what are these MS issues then?

[oakey]

Awesome! Fancy driving up to mine and showing me sometime as your so close ?

[hoshy]

here's a quick youtube video to keep you pic-monsters happy



The first time the revs appear to drop off is actually the hesitation problem, it only comes back up when I release and reapply the throttle.

And yes, I know I need to sort that pipework out :p

Edit: Dave - yes mate, happy to show you.

[hoshy]

Mark - the MS issues. Bloody weird. Just seems to hesitate, and hang (all MS dials flop) when you boot it. Seems like some kind of reset, electrical problem rather than fuelling etc.

Here's a link to an MS log of the problem: Log

[appletree]

Think mine runs around 8 psi or so daves rollers said altough my dad borrowed some gear for calabrating pressure sensors and it said it peaked at 9.98psi

Come and see mine when eva mate, or i'am at donnington on the 18 of july for a trackday or TOTB at york on the 27th

Does your MS tell you what intake temp your running?? would be intreted to see what its is a lower Boost. mine ran at 70c with no intercooling at 6.5k rpm but around 35-40 with the charge cooling depending on out side temp and how hard its driven, obviously its alot less if its just sat on the motorway at 70

[appletree]

here's a quick youtube video to keep you pic-monsters happy



The first time the revs appear to drop off is actually the hesitation problem, it only comes back up when I release and reapply the throttle.

And yes, I know I need to sort that pipework out :p

Edit: Dave - yes mate, happy to show you.

Mine used to do that for alittle bit when i dint have the airflow meter plugged in properly sothat might be were the problem is with the mapping, not reading the correct air flow????

[SHAKEELE30]

hey guys, what charger you guys using, any prices you guys can share...

What bhp you getting form this?

[hoshy]

Ah you're at donnington on the 18th - I'll be at cadwell then. Maybe we can sort something out like a motorway meet on the way home or whatever. PM me your mobile number and I'll call you closer to the time.

Yeap - intake temps on cruise about 60 and after a few seconds of boost get up to 73 peak I think.

Theoretically I should be hitting the same boost as you but I do suspect I have a leak somewhere around. I can hear it! I think when the hesitation problem is fixed I'll be able to see what it really peaks at in the upper revs. so far the highest I've seen is 143kpa which works out at 6.2psi above atmos, perhaps a little higher cos atmos isn't quite 100kpa. It's hard for me to get an exact figure as the hesitation problem kicks in and boost seems to fluctuate by a 1psi or so.

[hoshy]

The charger is the Mini Cooper S Eaton M45. Matt's car, the red one above puts out 205bhp. Mine should put out similar when fixed, mapped and chargecooled

[appletree]

Hoshy Have you used the same E36 front pully as me the???

I also have a brand new spare eaton if you realy do think its the bearing but this belongs to my dad but i'am sure he could be perswaded to sell it.

ya, i'm there on the 18th, sure we can sort something out

[hoshy]

here's a quick youtube video to keep you pic-monsters happy



The first time the revs appear to drop off is actually the hesitation problem, it only comes back up when I release and reapply the throttle.

And yes, I know I need to sort that pipework out :p

Edit: Dave - yes mate, happy to show you.

Mine used to do that for alittle bit when i dint have the airflow meter plugged in properly sothat might be were the problem is with the mapping, not reading the correct air flow????

Airflow meter was ditched a while ago. It's been running this exact same MS config NA for over 5000 miles now. It's bloody strange!

[appletree]

So how does the MS no that its getting more air?? have you added MAP sensor.

I got mine running through the Normal airflow metre and BMW ecu with the Fuel pressure turned up just to prove it worked and it did have alittle hesitation untill you got past a certain RPM then went like fook, almost like it bogged down then cleared

The supercharger gets red hot dont it! yours might be slightly better than mine as its mounted pritty low

[Theo]

Good work Hoshmiester

[hoshy]

Cheers Theo

Matt - yeah I should have said sorry. MS is primarily MAP based, can also be TPS/RPM based of MAF based but myself and most others here are running MAP. And yeah - bloody hell does it get hot! That was another reason I thought water injection would be a nice plan.

[hoshy]

Hoshy Have you used the same E36 front pully as me the???

I also have a brand new spare eaton if you realy do think its the bearing but this belongs to my dad but i'am sure he could be perswaded to sell it.

ya, i'm there on the 18th, sure we can sort something out

Just saw this post. Good to know that there's on that might be available - thanks.

Yeap, I used the same pulley arrangement as you so if I'm not making as much boost at the manifold it must be because I'm losing is somewhere. The rotors look good on the charger so don't think it's escaping there:)

[e30_Turbo]

I need some more time on the log, nothing obvious I can see, your voltage does ramp up bigtime after the 2nd reset.

I'll download it and stick it on the laptop over lunch.

Fozz.

[hoshy]

Cheers Mark. haven't looked a the volts yet - I'll check it out! Massive power increase could defo be a problem.

On that trace I was surprised to see two resets, the first was not felt in the car.

Edit: just looked at the volts. It gets up to a peak of 15.8 then sits at 14.9 for the remainder. I think either MS regulator is f00bed or the alternator regulator might be. I suppose it's plausible that a rapid raise in rpm could trigger it. I think I'll disconnect the alternator and go for a drive now... Hey, it's lunch time after all :p

[Turbo-Brown]

Awesome! Glad to see it running dude!

How does it vent air on part throttle though dude?

Reckon the charger will quieten down a bit if it can unload

Doesn't sound that loud to me though

[e30_Turbo]

Laptops screen driver has given up, just sorting java on the work PC.....


Sorted - The first reset seems to only effect the AFR's, no voltage drop or gain, the second, well that seems to send the bat Vol up by quite a bit.



I've had issues with large TPS movements which were down to the coil unloading the wrong way, i.e. to ground and not through the HT leads.

Doing this has made me realise how much you need to "feel" the issue.

I'll study some more and let you know.

I'd be looking for a bit more fuel top end also, aim for 12's in the higher rpms and your max was 6.239 psi!

Duty cycle @ 87.4% also, bigger ones soon!

Your MATs, are they in F not C?

Also what's the score with you spark angle? are you controlling spark? Wasted I pressume?

Was that a WOT pull?

[hoshy]

Awesome! Glad to see it running dude!

How does it vent air on part throttle though dude?

Reckon the charger will quieten down a bit if it can unload

Doesn't sound that loud to me though

Well, as your somewhat leading question alludes to... it doesn't

In reality, this is less of a problem than I thought. That bosch recirc dump valve is vented to atmos so I can hear on when driving what's going on. It transitions nicely on and off boost and when cruising my afr/injector pulse widths are exactly the same. I did a run of 180miles last night with this on and fuel eco was about the same... about 25/26 litres cruising around 65-80mph.

I still do want better control but I have said for months to some friends that this will be running for le mans karting in a couple of weeks so it was time to stuff the thing together

[hoshy]

Mark - I went out for a spin with mr alternator disconnected but no joy. Here's a link to that log. I didn't boot it for some time but scroll through and you'll see the resets.

Log

yes I think I do need bigger injectors, haven't tried upping the fuel pressure yet, am going to squeeze down the stock regulator a little to help out. AFRs are from my NA target tables, I just change the top couple of rows from 90-100kpa to 100-150. it should be aiming for about 12.8 there.

I did think that this halt might be something to do with the injectors getting so high in the DC%, but that wouldn't explain the resets etc. Actually those intake temps are in C there's no charge cooling atm.

Edit: yeap - spark is wasted on the original coil packs on the iS. Went through all my old ignition leads and found a set of 4 that all have close resistances.

I noticed even in the most recent log with the alternator off it's hitting a higher battery voltage after the reset (or a higher voltage is causing a reset.. Or maybe it's just MS power circuit is fucked).

Gonna look at some pre-supercharger logs and see how the batt v looks in there.

[daimlerman]

Good to see this running,Hoshy,got me thinking....wonder what a 'charger would be like on a 'proper' engine...?

[hoshy]

Good to see this running,Hoshy,got me thinking....wonder what a 'charger would be like on a 'proper' engine...?

Well malc - if you come to cadwell on july 18th I'll take you out for a spin then you can feel the power of a proper engine.

[e30_Turbo]

Mark - I went out for a spin with mr alternator disconnected but no joy. Here's a link to that log. I didn't boot it for some time but scroll through and you'll see the resets.

Log

yes I think I do need bigger injectors, haven't tried upping the fuel pressure yet, am going to squeeze down the stock regulator a little to help out. AFRs are from my NA target tables, I just change the top couple of rows from 90-100kpa to 100-150. it should be aiming for about 12.8 there.

I did think that this halt might be something to do with the injectors getting so high in the DC%, but that wouldn't explain the resets etc. Actually those intake temps are in C there's no charge cooling atm.

Edit: yeap - spark is wasted on the original coil packs on the iS. Went through all my old ignition leads and found a set of 4 that all have close resistances.

I noticed even in the most recent log with the alternator off it's hitting a higher battery voltage after the reset (or a higher voltage is causing a reset.. Or maybe it's just MS power circuit is ******).

Gonna look at some pre-supercharger logs and see how the batt v looks in there.

The log looks clean other than the two at the end, which is weird as you had boosted a few times beforehand.

Spark blow out has never caused a reset.

Are your HT leads touching anything on route to the plugs?

How old is the coil pack?

GET AN IC. ( I haven't seen more than 25'c IAT's at full boost at full revs! and IAT's helped kill 6 HG's )

I can't see a trigger as such, do you have any limits set? IATS, Boost cut etc

One thing that is weird is the first reset is DURING accel, the second is after you've come off.

There's something wrong with the sparks too, your off boost (N/A) timing is showing, as soon as you're in boost you're timing is retarding a SHIT load, down to -2.6!! Min I use is 10' @ boost/torque peak.

Do you have a MSQ to hand?

Thanks Fozz.

[fowler]

those intake temps are so high no rotrex in the pipe line hosh ?

[hoshy]

Rotrex will probably be my next project.

charge cooling is coming guys

the sparks are actually there on purpose to be extra safe with the high intake temps eta. It roles off to minus figures at the highest load sites. Incidentally I used to run 4-5deg at these points and had to take some off that because of detonation.

Will post msq now.

[hoshy]

Curent MSQ

[fowler]

you not intercooling the charger ??? i have a good place hide one on my 1.8 turbo hoshy fancy a race ????
lol!!!!

[hoshy]

Always up for a race What's the spec on your turbo?

[e30_Turbo]

Curent MSQ

I'll have a lookie when I'm at home in a bit.

Thanks, Fozz

[hoshy]

nice one - thanks mark!

[fowler]

not sure literally just done it last week need to up the boost anyway prob go for about 10 psi me thinks.
its a M40 turbo Tylerma old lump with a intercooler and a few other tweaks oh and a manual gearbox
trying to get 220 bhp out of it so i can play with the 2.7 boys lol