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Old 08-07-2014, 05:58 PM   #101
Wcfd2509
Scooby Newbie
 
Member#: 360640
Join Date: Jun 2013
Chapter/Region: MWSOC
Location: Grand Forks, ND
Vehicle:
2000 Legacy L Wagon
Hunter Green

Default $68 M62 pulley!

I thought you guys would be interested in the pulley I built.


I measure the O. D. of the face plates steel part that slips on the splined shaft. It was about 17.2 mm. I found out all Powerdyne pulleys are 17 mm ad pressed on design. So I found this site: http://www.928motorsports.com/parts/6ribpulley.php

I did my calculations on what pulley ratios would get me right around 14,500 rpm on the M62. There are a bunch of guys on the Mercedes forums spinning 15,000-16,000 rpm with no issues for years.

5.25/2.25=2.33333... pulley ratio.
2.333333x6250 rpm=14,583.333 SC rpm at redline.
14,583.333x1 (liter)x0.03531=514.9375 SC CFM
((514.9375-225/225)/14.7)x100=8.766 psi of boost on an EJ25.

So this pulley combo should yield 8.766 psi at the supercharger and approx. 7.5-8ish psi after my intercooler.

First, you have to cut the shaft cover off to make room for the pulley's position.


Next you have to grind down about .1ish mm off the faceplate portion that the pulley will press onto. (I forgot to take pictures.)

Then press the pulley onto the faceplate portion.


And the end result with extra pictures.
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Last edited by Wcfd2509; 08-15-2014 at 11:05 PM. Reason: Typo
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Old 08-07-2014, 06:10 PM   #102
Wcfd2509
Scooby Newbie
 
Member#: 360640
Join Date: Jun 2013
Chapter/Region: MWSOC
Location: Grand Forks, ND
Vehicle:
2000 Legacy L Wagon
Hunter Green

Default Some more goodies...

King XP Race Bearings, ARP rod bolts, And a Mini Cooper S butterfly valve style air actuated by-pass valve.


The plan is to run the by-pass valve in the stock BOV location on the WRX intercooler. It's a true butterfly valve by-pass similar to the one in the larger root style blowers. The flange is made for an HKS SSQ BOV. I'm going to custom fab the flange to be welded to the by-pass valve.


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Old 08-07-2014, 06:36 PM   #103
Wcfd2509
Scooby Newbie
 
Member#: 360640
Join Date: Jun 2013
Chapter/Region: MWSOC
Location: Grand Forks, ND
Vehicle:
2000 Legacy L Wagon
Hunter Green

Default Pulley size differences.

The OEM Mercedes 3.6"ish vs. the Powerdyne 2.25" supercharger pulley.
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Old 08-21-2014, 12:09 AM   #104
Wcfd2509
Scooby Newbie
 
Member#: 360640
Join Date: Jun 2013
Chapter/Region: MWSOC
Location: Grand Forks, ND
Vehicle:
2000 Legacy L Wagon
Hunter Green

Default BH 2000 Legacy L Wagon Build

My car was built 04/2000. It is an EJ251 with the stupid 280cc air assist injectors. I am going well beyond their capabilities with 220-240 WHP (275-290 CHP), so I needed more cc's to play around with.



Here is the manifold and the air assist holes.







I got some modified (De-capped) 03 WRX injectors flowing right around 720cc for my 9 psi M62 supercharger setup on my EJ257/EJ251 motor (220-240 WHP hopefully). Keep in mind guys, like Skidd, I'm running an E-manage Ultimate, so I can tune for larger injectors correctly.



The bottom injector is the air assist EJ251, and the top is the light green WRX.

The air assist one has one big o-ring up top, and funny bottom o-rings. Of which, the tiny one on the very tip is where it gets its seal in the lower, smaller diameter portion of the injector hole in the manifold. The WRX injector has one tiny o-ring up top and has one giant thick one on the bottom.





I bought some replacement o-rings for top of the EJ251 injectors, part #:9464K543 from here McMaster-Carr



The blue is OEM EJ251, the big black is the replacements, and the litter black is the WRX o-rings. As you can probably see, the WRX ones will not work in the EJ251 fuel rails. But there is hope, because the EJ251 top o-rings will fit over the WRX tops perfect and perfect in the EJ251 fuel rail. Like this:





Luckily the fat WRX bottom o-rings are a very snug fit inside the EJ251 manifold ports so leave those on. Here the WRX injectors are with the replacement EJ251 big top o-rings.





I found the WRX bottom o-rings seemed to cover the air assist holes so I did not cover the injector air ports. I will however plug the air assist tubes later. Use some grease on the bottom o-rings and wiggle them in there.





Then grease the top o-rings and carefully slip the fuel rails on there. (The top o-rings love to not go on correctly in the fuel rail so inspect them after you get them on for an even seal.) Hold the fuel rail on while you put your 12mm bolts back on or else the o-rings will pop the fuel rail off. Here is the end result:







And so you can all see how receded these injectors sit, here is a picture. You be the judge if you think it's too much.





Hope this is helpful!

Last edited by Wcfd2509; 08-24-2014 at 11:15 AM.
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