Eaton M45 Supercharger project
Discussion
Thanks for the reply. Only just noticed it! With a recent job change I have to head to Denmark for work for 3 weeks, so I opted to get mine finished by skuzzle Motorsport.
One thing I had not yet figured out was how I was going to sort a washer bottle. My car has abs so there is no obvious place.
Could you elaborate on the scuttle fitted one?
One thing I had not yet figured out was how I was going to sort a washer bottle. My car has abs so there is no obvious place.
Could you elaborate on the scuttle fitted one?
Regarding washer bottle OP ^^ is probably referring to these?
http://fast5.co.uk/alloy-water-bottles/
HTH.
Cheers, Pewe.
http://fast5.co.uk/alloy-water-bottles/
HTH.
Cheers, Pewe.
pewe said:
Regarding washer bottle OP ^^ is probably referring to these?
http://fast5.co.uk/alloy-water-bottles/
HTH.
Cheers, Pewe.
That's the one, yes. Fits perfectly and it's a trivial task to reroute the pipe work under the bonnet as the holes for the clips are present on the drivers side too. Just need to run some wiring from the plug across, and job's jobbed. I've used a cable tie to hold the pump against the bulkhead under the tank so it's out of view. I'll get some photos up when it's finished as I still need to drill the hole for the second mount. One uses the existing bolt near the bonnet hinge, the second requires a hole through the scuttle panel. http://fast5.co.uk/alloy-water-bottles/
HTH.
Cheers, Pewe.
Bit more progress.
Fitted the stainless twin pipe back box.
mated up the oil-cooler, fan and frame to the new rad and offered it up for fit. I'll need to reposition the power steering reservoir a little to allow it to fit with enough clearance for the intercooler hoses. We'll make up some new copper piping for the power steering cooling loop, so it passes behind the rad support, instead of between the rad and support, which was fouling it.
John got the custom pulleys made up for the power steering pump and crank, and also fitted the trigger wheel to the crank pulley. Apart from looking teh secks, they also light up perfectly first try. Happy days.
The oil cooler needs an adaptor plate made up, as I suspect that, although it's stated it'll fit a mk 2.5, 1.8. I think it's for the non-VVT engines. I'll need to investigate further as to the differences, but we have a solution anyway.
I've got some nice alloy we can use for the intercooler mounting brackets, so I'll take that over on Monday or Tuesday and see if we can't get closer to the finish.
I've also just been notified that the flywheel and clutch are en route, due to be delivered tomorrow, so that'll be nice.
Fitted the stainless twin pipe back box.
mated up the oil-cooler, fan and frame to the new rad and offered it up for fit. I'll need to reposition the power steering reservoir a little to allow it to fit with enough clearance for the intercooler hoses. We'll make up some new copper piping for the power steering cooling loop, so it passes behind the rad support, instead of between the rad and support, which was fouling it.
John got the custom pulleys made up for the power steering pump and crank, and also fitted the trigger wheel to the crank pulley. Apart from looking teh secks, they also light up perfectly first try. Happy days.
The oil cooler needs an adaptor plate made up, as I suspect that, although it's stated it'll fit a mk 2.5, 1.8. I think it's for the non-VVT engines. I'll need to investigate further as to the differences, but we have a solution anyway.
I've got some nice alloy we can use for the intercooler mounting brackets, so I'll take that over on Monday or Tuesday and see if we can't get closer to the finish.
I've also just been notified that the flywheel and clutch are en route, due to be delivered tomorrow, so that'll be nice.
A few more updates.
What's left?
- A bracket and mount for the crank angle sensor has been fabricated and fitted.
- Oil cooler spacer has been fabricated and the oil cooler installed.
- Supercharger is back in place and it all looks good.
- As we've moved the throttle to the supercharger intake, the throttle cable is now too short, so I made up a new one using a new outer, cable and ends, but with the original fittings removed from the old cable.
- Intercooler mounting bracket is in progress and has been tigged up.
- Wideband O2 sensor has been fitted and the wiring run into the passenger footwell where the ECU will live.
What's left?
- Rad mounting brackets and upper intercooler bracket.
- Fit MAP sensor
- Fabricate a face for the intake manifold to accept the hose coming out the intercooler. basically a dummy throttle with no valve, just straight through
- ECU wiring harness I made up is a little fragile, as you'd expect from soldered pins, so once we've verified it all works, we're just going to fill the back of it with resin or potting compound to help make it a bit more robust.
Nope. Single throttle on the ambient side. As the eaton is a displacement supercharger I think this would be better. Putting another throttle on the pressure side could damage the butterfly if it's under pressure while closed. I'm also taking advantage of the idle control valve on the throttle on ambient side too.
I'm confident it's the right path, if not the one most others have taken.
I'm confident it's the right path, if not the one most others have taken.
Edited by feef on Tuesday 17th June 16:45
You won't damage the butterfly with a dual throttle setup.
But there are downsides to dual throttles, chiefly IMO is noise. Single throttles are far more civilized.
However dual throttles massively improve throttle response and idle quality.
I couldn't live with either the noise or the poor throttle reponse/idle quality, so converted to a coldside setup.
But there are downsides to dual throttles, chiefly IMO is noise. Single throttles are far more civilized.
However dual throttles massively improve throttle response and idle quality.
I couldn't live with either the noise or the poor throttle reponse/idle quality, so converted to a coldside setup.
Questions time : The MK1 can have/does have ABS I believe. Is the ABS system controlled with a standalone ABS ECU module, or is the ABS operation handled within the main ECU?
We've hit a stumbling block with my supercharger install (MK2.5) in that the stock Mazda ECU does various things other than just engine management including alternator regulation (which we knew about), ABS control (which I guess isn't unexpected in hindsight, but that's life), as well as controlling the dash as it's on a CAN bus.
I can work around the alternator and dash problems, but I can't see any options for an aftermarket, standalone ABS ECU system.
If the MK1 has a standalone ABS then I could work out a way of using that.
In the meantime, we're going to set it up so the stock ECU controls the dash and abs (and alternator, since it's going to be there anyway) but I'd like to see if I can get it going completely standalone.
We've hit a stumbling block with my supercharger install (MK2.5) in that the stock Mazda ECU does various things other than just engine management including alternator regulation (which we knew about), ABS control (which I guess isn't unexpected in hindsight, but that's life), as well as controlling the dash as it's on a CAN bus.
I can work around the alternator and dash problems, but I can't see any options for an aftermarket, standalone ABS ECU system.
If the MK1 has a standalone ABS then I could work out a way of using that.
In the meantime, we're going to set it up so the stock ECU controls the dash and abs (and alternator, since it's going to be there anyway) but I'd like to see if I can get it going completely standalone.
Went over to Brundall Motorsport to check in on the MX5 and see what progress is being made.
Everything is back in, and on and we even got the engine to fire and run on a basemap on the Emerald ECU today, which is a huge step forward. The new twin-port exhaust is significantly more fruity than I expected, but it's not obscene.
A few teething troubles to iron out. The supercharger drive belt is squealing which we think is down to one of the idler pulleys being slightly on the cock so the belt is pulling over it at a very slight angle.
There's a tiny oil leak, which we think is from the 'donut' of the oil cooler system but we'll check..
And the tacho doesn't work, but we'd expected that.. along with a host of dashboard lights telling us things aren't working and whatnot.. but we will get there....
It's nice to hear it run and fire up so readily. It's idling a bit fast and the idle control valve is doing odd things when we enable it in the Emerald, so we've left it disabled for now and will let the chaps at Emerald deal with it when it gets on the Dyno on Thursday.
No photos or video I'm afraid, there was too much hanging on the ignition key ready to kill it at the sign of anything going wrong
Everything is back in, and on and we even got the engine to fire and run on a basemap on the Emerald ECU today, which is a huge step forward. The new twin-port exhaust is significantly more fruity than I expected, but it's not obscene.
A few teething troubles to iron out. The supercharger drive belt is squealing which we think is down to one of the idler pulleys being slightly on the cock so the belt is pulling over it at a very slight angle.
There's a tiny oil leak, which we think is from the 'donut' of the oil cooler system but we'll check..
And the tacho doesn't work, but we'd expected that.. along with a host of dashboard lights telling us things aren't working and whatnot.. but we will get there....
It's nice to hear it run and fire up so readily. It's idling a bit fast and the idle control valve is doing odd things when we enable it in the Emerald, so we've left it disabled for now and will let the chaps at Emerald deal with it when it gets on the Dyno on Thursday.
No photos or video I'm afraid, there was too much hanging on the ignition key ready to kill it at the sign of anything going wrong
feef said:
Questions time : The MK1 can have/does have ABS I believe. Is the ABS system controlled with a standalone ABS ECU module, or is the ABS operation handled within the main ECU?
We've hit a stumbling block with my supercharger install (MK2.5) in that the stock Mazda ECU does various things other than just engine management including alternator regulation (which we knew about), ABS control (which I guess isn't unexpected in hindsight, but that's life), as well as controlling the dash as it's on a CAN bus.
I can work around the alternator and dash problems, but I can't see any options for an aftermarket, standalone ABS ECU system.
If the MK1 has a standalone ABS then I could work out a way of using that.
In the meantime, we're going to set it up so the stock ECU controls the dash and abs (and alternator, since it's going to be there anyway) but I'd like to see if I can get it going completely standalone.
The MK2.5 ABS is standalone, just as the MK1 is, who told you it was integrated?We've hit a stumbling block with my supercharger install (MK2.5) in that the stock Mazda ECU does various things other than just engine management including alternator regulation (which we knew about), ABS control (which I guess isn't unexpected in hindsight, but that's life), as well as controlling the dash as it's on a CAN bus.
I can work around the alternator and dash problems, but I can't see any options for an aftermarket, standalone ABS ECU system.
If the MK1 has a standalone ABS then I could work out a way of using that.
In the meantime, we're going to set it up so the stock ECU controls the dash and abs (and alternator, since it's going to be there anyway) but I'd like to see if I can get it going completely standalone.
If you're struggling to find the ABS ECU, it's integrated into the pump
My stock ECU is AWOL, the ABS works fine, they don't talk to each other, I promise!
For the alternator control, there are simple circuits available (search miataturbo and or Jason Cundra alternator circuit) that can control it. Alternatively, swap in a MK1 alternator if you don't want the hassle.
Dashboard, the only thing your ECU needs to output is the tacho, everything else has standalone sensors.
Edited by Richyvrlimited on Wednesday 16th July 13:33
According to the wiring diagram, the ABS ECU on the pump has a speed output from the engine ECU going into it.
Tacho, I've worked out the solution so no worries..
Biggest problem is that the squeal isn't the pulleys, but seems to be coming from the blower itself. I suspect a leaky seal.
Tacho, I've worked out the solution so no worries..
Biggest problem is that the squeal isn't the pulleys, but seems to be coming from the blower itself. I suspect a leaky seal.
feef said:
According to the wiring diagram, the ABS ECU on the pump has a speed output from the engine ECU going into it.
That's news to me, I can't find it on my wiring diagram either?!? Which ECU pin goes to the ABS module?Either way though it has no effect on the ABS or it's operation. my stock ECU has been missing for the last 2 years, plenty of winter track work as seen a lot of ABS operation
Richyvrlimited said:
That's news to me, I can't find it on my wiring diagram either?!? Which ECU pin goes to the ABS module?
Either way though it has no effect on the ABS or it's operation. my stock ECU has been missing for the last 2 years, plenty of winter track work as seen a lot of ABS operation
Pin 3Q (green/white) on the PCM goes to the ABS unit.Either way though it has no effect on the ABS or it's operation. my stock ECU has been missing for the last 2 years, plenty of winter track work as seen a lot of ABS operation
MX-5 Lazza said:
You are running a single throttle body on the ambient side aren't you? Is the bypass working correctly so that it bypasses the SC on vacuum?
It's squealing at any revs, whether that valve is open or not however, you've just given me an idea.. it COULD be related to the idle control valve which isn't programmed yet.I will investigate further anyway
Ahh, found it, thank you.
Pretty sure that's not a speed output from the ECU. It's also splices off to the Diagnostic block and the OBD port. I think it just sends error codes to the ECU on the ABS's condition.
As I say, it has no effect on the ABS operation when it's missing, and I get no error codes from the ABS with the stock ECU missing.
3O is engine speed/tacho, you've not mixed those up have you?
Pretty sure that's not a speed output from the ECU. It's also splices off to the Diagnostic block and the OBD port. I think it just sends error codes to the ECU on the ABS's condition.
As I say, it has no effect on the ABS operation when it's missing, and I get no error codes from the ABS with the stock ECU missing.
3O is engine speed/tacho, you've not mixed those up have you?
Edited by Richyvrlimited on Wednesday 16th July 15:02
Possibly...
It's not a priority right now, as all I want to do is get it running, dyno'd and back on the road and I can iron out these issues at a later date.
Once that's all done, and everything else is reinstalled and put back into place, I can then start tracing what I need to trace and remove what I need to remove. I know how my mind works, and I'll have forgotten it all by the time I come to do it if I start right now
I'll be on holiday till mid August, so don't expect much to happen between the end of this week and then
It's not a priority right now, as all I want to do is get it running, dyno'd and back on the road and I can iron out these issues at a later date.
Once that's all done, and everything else is reinstalled and put back into place, I can then start tracing what I need to trace and remove what I need to remove. I know how my mind works, and I'll have forgotten it all by the time I come to do it if I start right now
I'll be on holiday till mid August, so don't expect much to happen between the end of this week and then
Well, it's built and mapped... the supercharger project is complete.... well.. maybe not.
It seems we've made an error in our calculations and the crank-pulley we made is too small so it's only running about 3-4psi boost! ARGH!
Got the increase in ratio right, but forgot to factor in that the stock crank pulley on the Mini is significantly bigger than the one on the MX5 to start with.
Still, it's all in, built, assembled and has been mapped as it stands with a feeble 3-4psi of boost. We've enabled the immobiliser link to the ECU and also got the VVT running.
Putting out just shy of 190bhp and 150lbft of torque at such a low pressure isn't too bad, so I'll be interested to see what happens when we get the correct blower drive ratio set up, expecting about 10psi.
The wiring needs tidying up, and the passenger seat and interior put back in, but John will do that while I'm on holiday, and get it MOT'd. Then I can tax it and drive it as it is for the rest of the summer. If nothing else, it'll be nice to get it back, and it'll be a good shake-down for all the components and whatnot, before we boost it to 'full pressure'.
https://www.youtube.com/watch?v=YJVsyc8nNvU
It seems we've made an error in our calculations and the crank-pulley we made is too small so it's only running about 3-4psi boost! ARGH!
Got the increase in ratio right, but forgot to factor in that the stock crank pulley on the Mini is significantly bigger than the one on the MX5 to start with.
Still, it's all in, built, assembled and has been mapped as it stands with a feeble 3-4psi of boost. We've enabled the immobiliser link to the ECU and also got the VVT running.
Putting out just shy of 190bhp and 150lbft of torque at such a low pressure isn't too bad, so I'll be interested to see what happens when we get the correct blower drive ratio set up, expecting about 10psi.
The wiring needs tidying up, and the passenger seat and interior put back in, but John will do that while I'm on holiday, and get it MOT'd. Then I can tax it and drive it as it is for the rest of the summer. If nothing else, it'll be nice to get it back, and it'll be a good shake-down for all the components and whatnot, before we boost it to 'full pressure'.
https://www.youtube.com/watch?v=YJVsyc8nNvU
feef said:
Well, it's built and mapped... the supercharger project is complete.... well.. maybe not.
It seems we've made an error in our calculations and the crank-pulley we made is too small so it's only running about 3-4psi boost! ARGH!
What diameter is the crank pulley you had made? It looks no smaller than the stock pulley that's normally used.It seems we've made an error in our calculations and the crank-pulley we made is too small so it's only running about 3-4psi boost! ARGH!
The JR M45 kits have ahttp://www.pistonheads.com/gassing/forumGroup.asp?h=0&c=76&mid=220200 72mm nose pulley with the stock 135mm crank pulley (ratio of 1.8), they make about 7psi of boost. the MINI MP45 has a stock nose pulley of 65mm IIRC, even if your crank pulley is 120mm you should be making more or less the same boost level.
Check the bypass is closing properly, and check for boost leaks in the pipework.
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