SuperCharging an M42-Opinions? Whats needed?

[Geeman]

Okay... advice taken. No Supercharger on my impending M30 then... *sniff*

[Turbo-Brown]

Fit two of them

[Dom]

so essentially you could run the M42 lump at 12psi, assuming the internals would like it...

[Turbo-Brown]

Think unless the compression ratio's already quite low you might have some issues with running almost 1bar of boost!

If you replace the engine displacement and boost pressure you wanna run into the above calcs you'll see what's possible, although the 85% VE's a complete guess!

The other thing is that the efficiency of these little blowers degrades quite drastically the harder you push them which means it's putting more heat into the charge which isn't a great idea.



Also, the power consumption goes up a fair bit.

[Davenotouring]

Geeman,

We need to be thinking turbochargers for M30's!

Does emerald management cope with turbos too?

[Russ]

Geeman,

We need to be thinking turbochargers for M30's!

Does emerald management cope with turbos too?

Now you're talking!

[Davenotouring]

Geeman,

We need to be thinking turbochargers for M30's!

Does emerald management cope with turbos too?

Now you're talking!

I'm going to the 'Ring on the 21st of June in my Civic (or my mates tuned CRX if it's ready) for one night. You up for it!?

[Andy335Touring]

Does emerald management cope with turbos too?

Yep !

[Davenotouring]

[Turbo-Brown]

Any idea what the compression ratio of the M30 is?

I was well happy when I found out that the M20 has a 9.7:1 ish CR and still made 170bhp

Programmable engine management is definately the way forward as far as making power from blower applications is concerned.

Ignition timing makes more of a difference to power than fueling and having control over that means having control over power

[Andy335Touring]

E34 M30's are 9.0:1

[Davenotouring]

E34 M30's are 9.0:1

[Russ]

Geeman,

We need to be thinking turbochargers for M30's!

Does emerald management cope with turbos too?

Now you're talking!

I'm going to the 'Ring on the 21st of June in my Civic (or my mates tuned CRX if it's ready) for one night. You up for it!?

YHM.

[Davenotouring]

You got mail back mate.

Calling all cars for this!! Come on down.

[Nelly]

If i can ponce a lift and throw a few petrol pennies at you Dave,i might be coming?????

[Davenotouring]

I'm in the baby Civic mate, it's gonna be stripped out and full of spares/tools! Otherwise I'd say for sure!!

Karan is umming and arring so speak to him! Persuade him to come, he's up for it, just needs that final push!



This will be cool!

Got my car, Karls touring, Karls mate Dave's E30 Cab, hopefully Russ in his Mr2, and Karan with Neil!!

Wahey!!

[SwirlyE30]

Anyone got a spare seat for me lol?

[Davenotouring]

Anyone got a spare seat for me lol?

I haven't mate I'm afraid

Need to fill the car with bits and bobs.

Next time I may have!

[SwirlyE30]

Civics got a big old boot mate, make sure you check it, i could have slipped it

[Davenotouring]

I'll see what I need to take mate!

Thing is, I've booked the Ferry now under our names, and it costs to make alterations. You'd need hotel too.

Best idea is:

Drive your car down with a mate, won't cost too much.

Ferry = 50
Hotel = 45
Petrol = 100-150

Split that by two......

Not too expensive.

Come along.

The extra costs are:

Beer/Food etc

[SwirlyE30]

Oh right, dont seem too bad mate. When you all going? Ive got a new job so in a few weeks i should be getting on my feet money wise, if you all went somtime in the summer or around august or somthing i wouldnt mind looking into it!

[Davenotouring]

Going on the 21st of June mate.

Will be going again, and for longer in August.

[SwirlyE30]

Oh right, think im in lemans on the 21st mate! watching the racing.(Unless ive got my dates fcked up!) But im up for somthing later in the year!

[Davenotouring]

Good lad good lad!

Will be a giggle.

Gonna make notes this time, and do a longer trip next time.

Petrol on the way is the most expensive part, so the longer you stay, the more worthwhile it is.

[frosted]

so basically its pointless supercharging using the mini charger?

humm. odd!

update - im talking to my mate properly on friday, deffo on for some freebies tho

regards,

frosted

[Geeman]

Nooooooooo! Pointless using just ONE Mini supercharger on the M30...

[hoshy]

frosted. only pointless for a big engine like the m30, as geeman says. For my little 1.8 it's gonna turn it in to a monster

Ok, ok, no 2.7 but I'm expecting similar performance to the stock 325. Santa pod is on the road map!!!

[320Touring]

yeah frosted!

us with the puny m10, m40,m42 and m20's need the superchargers!!

let us know when you have got some ready!

good luck and thanks in advance!

Neil

[Gwynleym10]

so basically its pointless supercharging using the mini charger?

humm. odd!

update - im talking to my mate properly on friday, deffo on for some freebies tho Smile

regards,

frosted

I'm def up for one of these, hopefully should work well on my new m10!

but can anybody give me some information on super' my M10 ie turbo-brown?!!!!

[Turbo-Brown]

Well, assuming that the M10 is a 1.8.....not sure if that's right

And that you only want to rev to 6500rpm (again a guess)

Also making the 85% VE assumption again:

The engine consumes about 4972.5litres/min of air.

(lots of this is based on guesswork again but if people can fill in the blanks)

Lets say you want 7psi of boost which should give about a 47% power hike

So we need a flow rate of 4972.5*1.47=7340.36 litres/min

Looking at the graphs for the M45 charger, it's well within it's operating range, the charger shouldn't put too much heat into the charge (although an intercooler is always a good idea) and also it shouldn't consume too much power

You know it makes sense! Although fueling and ignition seem to be key to getting the most out of this type of conversion so an ECU which can deal with positive manifold pressures should IMO be viewed as more of a necessity than a luxury.

[Gwynleym10]

Well, assuming that the M10 is a 1.8.....not sure if that's right

yes thats right well 1766cc.

Thanks for that, this looks like it could be fun! just waiting on the news on the 'chargers!

[frosted]

promise as soon as i know you lot will. will prob post from my pda when im in the pub talking to him

[Jhonno]

promise as soon as i know you lot will. will prob post from my pda when im in the pub talking to him

show off

[frosted]

grin na just a sad basterd!

comes with having ur own it business. bloody computers!

thats why i allways post back quick. im allways in front of a computer working

nevermind. pennies are good.

[Jos]

What a cool idea! Always loved superchargers since seeing Mad Max

Going with what Turbo-Brown said, I think you would need 2 M45s or 1 M62, the m30 would need 13200ish litres of air at 7psi. Got a little spreadsheet that calculates the airflow, was made by some other bloke, but its quite handy for this sort of stuff.

Clicky

Friend of mine is thinking about this for his Toyota Celica GT 2.0.. although I think the engine might blow up as its already 180bhp aspirated..