Eaton m62 supercharger - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Supercharger Discussion For all you misguided souls.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 02-11-2017, 03:50 AM   #1
Newb
Thread Starter
 
Join Date: Jan 2017
Posts: 12
Total Cats: 0
Default Eaton m62 supercharger

Hello
I recently purchased a supercharged 99 miata. it has a eaton m62 supercharger installed with intercooler. It's running at 5psi boost and the previous owner told me, in order to increase that, I need to replace the pulley. I've been trying to do some research on this and am finding different answers everywhere. I'm fine with the car the way it is now, but just curious as how I'd go about increasing the boost to 9-10 psi.

Thanks
Murtaxa is offline   Reply With Quote
Old 02-11-2017, 09:19 AM   #2
Elite Member
iTrader: (6)
 
Join Date: Apr 2013
Location: Ohio
Posts: 1,654
Total Cats: 72
Default

Quote:
Originally Posted by Murtaxa View Post
Hello
I recently purchased a supercharged 99 miata. it has a eaton m62 supercharger installed with intercooler. It's running at 5psi boost and the previous owner told me, in order to increase that, I need to replace the pulley. I've been trying to do some research on this and am finding different answers everywhere. I'm fine with the car the way it is now, but just curious as how I'd go about increasing the boost to 9-10 psi.

Thanks
Which kit is it? BRP, Moss? Hot side, Cold side? I bought pulleys for a previous MP62 setup from Gary at http://trackdogracing.com/TDR-SC-PUL.aspx. Get in touch and they'll help you decide which ones you need.

Either one will point you in the right direction.

Last edited by bahurd; 02-11-2017 at 10:30 AM.
bahurd is online now   Reply With Quote
Old 02-11-2017, 10:36 AM   #3
Newb
Thread Starter
 
Join Date: Jan 2017
Posts: 12
Total Cats: 0
Default

It's BRP and hot side, although I'm not 100% sure about the hot side. How do I check?
Murtaxa is offline   Reply With Quote
Old 02-11-2017, 11:40 AM   #4
Elite Member
iTrader: (21)
 
Join Date: Jun 2007
Location: Rochester, NY
Posts: 5,317
Total Cats: 377
Default

Hotside means it's on the exhaust (right) side of the engine, looking from the front. Coldside means it's on the intake (left) side.
rleete is offline   Reply With Quote
Old 02-11-2017, 11:48 AM   #5
Newb
Thread Starter
 
Join Date: Jan 2017
Posts: 12
Total Cats: 0
Default

https://1drv.ms/i/s!ArGcOIBZVETn0nQ9uAWq8LQ2IND1

it's definitely hotside then. So all I have to do is get a ~115-125mm pulley and I should be good? No other parts required? No messing around with the computer chip card thing in the car? As you can tell Im new to cars and boosting and whatnot
Murtaxa is offline   Reply With Quote
Old 02-11-2017, 11:53 AM   #6
Check out my part outs.
iTrader: (26)
 
thirdgen's Avatar
 
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 5,571
Total Cats: 128
Default

In for part out....
thirdgen is offline   Reply With Quote
Old 02-11-2017, 11:56 AM   #7
Newb
Thread Starter
 
Join Date: Jan 2017
Posts: 12
Total Cats: 0
Default

Thanks for being so helpful thirdgen. I'm sure people think you're funny
Murtaxa is offline   Reply With Quote
Old 02-11-2017, 01:18 PM   #8
Moderator
iTrader: (10)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, FL
Posts: 14,072
Total Cats: 1,164
Default

If you have a powercard you may not have the injectors necessary to increase your boost or horsepower from the current level. You should determine how much headroom you have prior to proceeding.
sixshooter is offline   Reply With Quote
Old 02-11-2017, 02:11 PM   #9
Elite Member
iTrader: (2)
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 1,940
Total Cats: 342
Default

First and foremost, you have to answer a few questions:
  • What size is your current crank pulley?
  • Do you have stock injectors with a fifth injector setup?
  • How many powercards do you have?
  • Do you have a wideband O2 sensor - or, "AFR gauge" in your car?
  • What octane gas are you using?
  • Have you ever checked to see if your intake system has any "boost leaks"?
There are more questions, but these are what comes to mind right away.

Now..
Yes, if you have a 5th injector setup and three powercards, you "can" run up to 10 12 psi boost.

And, that would require a few things:
  • A bigger capacity fuel pump
  • Re-tuning the engine (It's possible, but you HAVE TO find the right person to do that - fueling adjustment gets tricky)
  • Colder spark plugs (BKR 7 series)
  • WIDEBAND O2 SENSOR AND GAUGE (Don't even think about skipping this)
  • Stronger clutch (Choices too numerous to list here)
  • Biggered, largered exhaust
  • Improvements for the cooling system
  • Et cetera...
There is a huge difference between 5 psi and 10 psi boost in terms of engine management, fuel supply, cooling, power transmission and handling.
Power is really nice, but it does come at a cost.

If you just buy a bigger pulley and bolt that on, let me know.
I can also help you with a partout thread.
Godless Commie is offline   Reply With Quote
Old 02-11-2017, 04:17 PM   #10
Elite Member
iTrader: (21)
 
Join Date: Jun 2007
Location: Rochester, NY
Posts: 5,317
Total Cats: 377
Default

Thirdgen and godless commie are trying to tell you in the politest way possible, that if you just bolt on a bigger pulley, chances are very good that your engine will go boom.

You need to add fuel (at a controlled rate) or your engine runs lean, detonates and very quickly destroys itself.
rleete is offline   Reply With Quote
Old 02-11-2017, 07:36 PM   #11
Check out my part outs.
iTrader: (26)
 
thirdgen's Avatar
 
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 5,571
Total Cats: 128
Default

Yes, rleete is right. I am in no way trying to be a dick, and you habe to understand the humor on this site. In fact, if you would like help from somebody as sophisticated as myself, I would be more than happy to help you.
Pretty much what we're saying is it sounds simple enough to just put a big pulley on and run 4 more pounds of boost than you're running, but that 4 more pounds of boost can do lots of damage. Especially because I'm pretty sure you have a power card or something which does not control timing at all, and it's a poor way to control fuel as well.
Please tell us more details about your setup. What kind of intercooler do you have? What size exhaust do you have? What are you using for a wideband?
thirdgen is offline   Reply With Quote
Old 02-11-2017, 08:33 PM   #12
Elite Member
iTrader: (2)
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 1,940
Total Cats: 342
Default

Oh, and it's an MP62, btw.
Godless Commie is offline   Reply With Quote
Old 02-11-2017, 09:25 PM   #13
Newb
Thread Starter
 
Join Date: Jan 2017
Posts: 12
Total Cats: 0
Default

Thanks for the replies. I asked help for something else before on the regular miata forum and encountered dicks, so I just assumed that's how forums are. But anyways, I will get all that info tomorrowish, or try to. Might have to ask previous owner about some of these things.
Murtaxa is offline   Reply With Quote
Old 02-11-2017, 11:14 PM   #14
Check out my part outs.
iTrader: (26)
 
thirdgen's Avatar
 
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 5,571
Total Cats: 128
Default

Mp62 on 5 psi might be maxing out stock injectors, or close.
thirdgen is offline   Reply With Quote
Old 02-12-2017, 03:32 AM   #15
I'm Miserable!
 
Join Date: Nov 2016
Posts: 9
Total Cats: 0
Default

I hope the car is a fun learning experience.
Ools is offline   Reply With Quote
Old 02-13-2017, 08:33 AM   #16
Senior Member
 
Join Date: Oct 2013
Location: NorthWest NJ
Posts: 877
Total Cats: 36
Default

The people on this site are some of the most knowledgeable around for boosting miatas. They can be jerks sometimes though. :P

Once we know exactly what you have we can point you in the right direction to start researching how to upgrade though. Modifying cars at this level requires lots of research and learning or you risk a blown up engine.
x_25 is online now   Reply With Quote
Old 02-13-2017, 09:30 AM   #17
Newb
Thread Starter
 
Join Date: Jan 2017
Posts: 12
Total Cats: 0
Default

Yea, of course. I'm not in any rush, in fact I don't even know if I want to do it as the car feels great now. But eventually people get bored with the amount of power available. I'm gonna take my time with this, do it right. Gonna infiltrate the local miata bro network and find some knowledgeable people
Murtaxa is offline   Reply With Quote
Old 02-13-2017, 04:05 PM   #18
Elite Member
iTrader: (2)
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 1,940
Total Cats: 342
Default

Just curious, What exactly is Murtaxa?
Is it Murtaza ot Murteza?
Godless Commie is offline   Reply With Quote
Old 02-13-2017, 04:50 PM   #19
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 1,857
Total Cats: 128
Default

Quote:
Originally Posted by Murtaxa View Post
Yea, of course. I'm not in any rush, in fact I don't even know if I want to do it as the car feels great now. But eventually people get bored with the amount of power available. I'm gonna take my time with this, do it right. Gonna infiltrate the local miata bro network and find some knowledgeable people
I highly recommend against this. The average Miata bros are complete morons. Stick around here, read a bunch, save a LOT of money, keep reading build threads. In about a year you will be ready to take on your dreams of moar boost.

PS, stay far away from anyone who uses tems like "slap on this" or " Re-flash that".
ryansmoneypit is offline   Reply With Quote
Old 02-13-2017, 05:53 PM   #20
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 33,798
Total Cats: 2,117
Default

or ever mentions the words "drift" or "stance"
18psi is offline   Reply With Quote
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 12:07 PM.