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www.ALBERTOBILLA.it
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Porsche RSR cams MFI regolation
HI...
i have a problem to set MFI with rsr sprint cams and HighButterfly ... explain: how i must set MFI ?? (at FE) 40° after tbc 4 cilinder?? or 14° after delivery end of 1 cilinder? many thanks... Pls Help! 
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08-14-2010, 05:47 AM
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Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
Posts: 7,129
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Where are you located?
Maybe if you post some pictures of your motor and some close-ups of your injector pump some of the experts here will be able to offer some help.
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Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage |
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08-14-2010, 07:23 AM
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www.ALBERTOBILLA.it
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See my Garage... |
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08-14-2010, 08:07 AM
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Registered User
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Your pump looks like the standard 2.2 but modified somewhat. I would set the pump timing to factory spec. 40 degrees after TDC of #4.
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Mark Jung Bend, OR MFI Werks.com |
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08-14-2010, 08:26 AM
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www.ALBERTOBILLA.it
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pump is modificated into RSR spec.
14° before tbc of 4 cyl. is incorect??? whith 40° (FE mark) i have a MFI too rich at 4500rpm |
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08-14-2010, 08:34 AM
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Registered User
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I didn't know it was modified to the RSR spec, sorry. The 14 degrees BTDC at #4 would be correct.
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Mark Jung Bend, OR MFI Werks.com |
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08-14-2010, 08:41 AM
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www.ALBERTOBILLA.it
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ok...many thx...
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08-14-2010, 08:45 AM
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i think 14° btbc because there are difference between "S" cams and "RSR SPRINT" cams and the Mark on PUMP is considerated for S cams...
CORRECT??? |
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08-14-2010, 12:26 PM
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Registered User
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I'm going by some old specs and notes on the RSR pump timing and from what I can tell is if you have the RSR space cam in the pump, RSR sprint camshafts and the high butterfly TB's you need to advance the pump timing by about 55 degrees compared to the stock MFI timing. This would be around 345 degrees after #1 TDC or about 15 dregees before #4 TDC. Hope this make sense.
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Mark Jung Bend, OR MFI Werks.com |
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08-14-2010, 02:11 PM
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www.ALBERTOBILLA.it
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Infinity Thanks...
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08-14-2010, 04:29 PM
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| Tags |
| high butterfly , mfi , porsche , rsr , rsr sprint cams |
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