Supercharger has arrived
- Thread starter mac27040
- Start date
If I don't get an M I will be getting this!!
pokeybritches
Member
mac27040 said:
The supercharger bracket bolt is too long to be fitted because the support is in the way. However...
I installed mine without removing everything. I used a cherry picker to raise the engine just enough to slip the bolt in. If you can rent one, it will save you hours of labor.
pokeybritches
Member
sniffer said:
The kit uses the OEM MAF sensor (the Z4 uses a MAF not a MAP). You have extend the wires for the MAF sensor (extend = cut them and solder in more wire to lengthen them).
pokeybritches
Member
Beedub said:
The M54 is realtively overbuilt from the factory. It uses the E36 M3 crank (forged). The pistons are graphite coated. The limit on a stock engine is fuel quality, as in it can keep making power up to the point of detonation due to heat. With lower compression, the head can strip the aluminum threads on the head studs at ~500 whp. Short answer is 6 psi is nothing.
I'm not an EAton specialist, but from what I can find on the internet is that the Eaton M65 is not a name carried by Eaton itself, and that it basically is an Eaton M45 with a smaller pulley and different inlet/outlet port (based on what I see on forums and pictures). So that is what I read and see. Eaton itself has no mention of the m65. They only have the m45, m62, m90 and m112 (in this range). So until I see a verified compressor map which says m65, I regard the m65 as a m45LukeMace said:
No, the larger volume has nothing to do with efficiency. Larger compressors can have more loss tue to bigger gaps between the blades, heavier components etc etc.And the m62 staying cooler than an m90? I'd of thought the less work it has to do because of a larger volume, the cooler it would stay (m90)
Remember, you only need a certain amount of air. You have a specific engine, and design a system for a specific amount of boost. That determins the amount of air you need.
Just like an engine itself: if you need exactly 100HP, you can run a small 1,6L on high throttle or a big V8 on low throttle. The chances are that the big V8 will consume more fuel because it has lower efficiency for that amount of power.
But let the choice between a m62 and m90 compressor up to someone who has experience and who knows the design parameters from your project.
Without knowing the amount of boost you're planning it is very hard to determine what's best. Although I'm pretty sure for a 3L with stock 231HP the M45 won't be the best
Still, before spending money, I'd wait and see what other experiences will pop up from this guy. There are lots of people offering cheap supercharger sets (or cheaper than the names who have earned their good reputation), and sometimes it works(ish) and sometimes it's complete rubbish.
Last on bimmerboost I read a thread about some guy in the US ordering a new set for a bmw (e39) 540i (so a v8 engine) based on an eaton supercharger, which is nice because there is no other set available which doesn't use a centrifugal setup, but that set was pretty much useless. That was clear the minute he unwrapped the stuff. Amateuristic stuff build in a shed. (like a manifold that doesnt line up so you get leaks everywere etc etc, read the thread on bimmerboost).
But the bottom line is that he lost 3000quid or something like that, and he could -maybe- only use some of the stuff to build a set himself that would work.
Still in the ebay listing everything looked awesome, but these kind of things you can't judge on some pics.
And there may also be the point of astethics. Most people use the Z4 as a garage queen, a bit of a poser car, pride&joy etc etc. So a kit has to look good, regardless of it working. This guy is still in the process of making up a template with pieces of scrap firewood. I'm not saying he won't succeed, but making a nice bracket that looks good takes a lot of time and money (mostly a cnc job, so building a computer model, and outsourcing the manufacturing of parts).
Do you get that for the few hunderd pounds?
What does he offer?
Remember that this thing will be the first thing you'll see when you open up the hood. So I think it's best to see this kit irl before you buy (and maybe drive a car (like an e46 or so) with this kit)
But there can be so much said about this kit (and the use of an eaton supercharger by itself) that it may need it's own thread, because this thread is completely hijacked.
pokeybritches
Member
NathanZ4C said:
The torque increase is about 20%. This is a centrifugal supercharger, so it doesn't add a lot of torque where the torque would peak on a naturally aspirated engine (in the lower rpm band). It adds a lot of torque where it would normally fall off (in the upper rpm as the engine becomes less efficient). What you end up with is a flat line that's about 20% higher than peak torque of a stock engine.
The stock clutch is fine. I replaced mine after 10k supercharged miles because it started to drag between gears when I shifted quickly. This is mostly due to the first 55k miles driven by the previous owner. I'm up to 130k miles now
I drove in some of the hottest parts of the U.S. and never had a cooling issue.
)pokeybritches
Member
LukeMace said:
It's all about the tune, and I would run away from anyone who lumps in the S54 with the M54. Avoid generic kits like the plague. It sounds like they take an old supercharger and throw in some bigger injectors to compensate for the increased airflow.
pokeybritches
Member
willgill said:
The N52 can't handle boost like the M54, which is why only one company did it (Arma), and blew up customer cars in the process. The internals on the N52 aren't as strong.
You might get away with 3 or 4 psi. Any more than that, and you're in uncharted territory.
nightyard said:
I already posted that he is happy to offer a group buy discount
also he is happy to increase the supercharger size to cater for additional displacement etc... I heed the warnings about aesthetics and alike but everyone has to start somewhere, he also works with a third party mapping company and his work carries warranty not just over the supercharger but also engine.
pokeybritches said:
Given the price I'd be more than happy with a lower Bhp return, anything circa 30-45hp would be more than satisfactory, I'd expect the additional low end grunt, SC whine and recirculation hissing would be more than enough to put a smile on my face. I'm easily pleased, just got a 118i as a courtesy car and it's tiny weeney turbo wastegate has been chattering all the way home
pokeybritches
Member
willgill said:Given the price I'd be more than happy with a lower Bhp return, anything circa 30-45hp would be more than satisfactory, I'd expect the additional low end grunt, SC whine and recirculation hissing would be more than enough to put a smile on my face. I'm easily pleased, just got a 118i as a courtesy car and it's tiny weeney turbo wastegate has been chattering all the way home
3 psi should get you there. 3 psi would be 50 hp with a proper tune.