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02-25-2009, 04:39 PM
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Senior Club Cobra Member
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Join Date: Jul 2007
Location: Odessa (Tampa),
FL
Cobra Make, Engine: BDR 559. 410 Stroker 72 block AFR205 Heads, Solid roller lifters, Comp Cams XR286, Eagle 4" stroke internally balanced with chevy journals, Oliver rods, Probe Forged pistons, Mighty Demon, Super Victor, MSD Digital 6.....
Posts: 260
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Not Ranked
MSD Help...
OK,
So I just replaced my pickup in the dist and I'm back on the road, sort of... Now I have a new problem; The car starts and runs great until I get to about 3,000 - 3,500 rpm and then my tack goes berzerk.....
As soon as it goes berzerk it heads north of my redline that is set at 6,500 and I hit the rev limiter even though the rpm's are really only around 3,500!!!!!
Any ideas? I only switched out the pickup, made no other changes... Loose wire? Bad ground? The pickup is tight as is the new magnet that was included in the kit...
__________________
BDR 559
Indigo Blue, White Stripes
SBF 410
TKO 600 .82 OD (Road Race)
HP= Enough!!
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02-25-2009, 04:57 PM
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Senior Club Cobra Member
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Join Date: May 2007
Location: San Clemente,
CA
Cobra Make, Engine: CSX 4758, CSX 381 Keith Craft 482 w/ Weber 48 IDA's
Posts: 492
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Not Ranked
Make sure you have the pickup gapped correctly and that the clearance between the 8-bladed reluctor and the magnetic pickup is no more than .025-.030 in. I had that problem before and MSD didn't talk about the pickup being "adjustable" when you install it with the stainless hex screws.
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02-25-2009, 06:53 PM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,409
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Not Ranked
Check the center graphite tab on the distributer cap for signs of arcing. Did you replace anything else or the the mag pickup?
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, Cinema Tribute Cars $ GT40’s..
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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02-25-2009, 08:48 PM
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Senior Club Cobra Member
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Join Date: Jul 2007
Location: Odessa (Tampa),
FL
Cobra Make, Engine: BDR 559. 410 Stroker 72 block AFR205 Heads, Solid roller lifters, Comp Cams XR286, Eagle 4" stroke internally balanced with chevy journals, Oliver rods, Probe Forged pistons, Mighty Demon, Super Victor, MSD Digital 6.....
Posts: 260
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Not Ranked
Just the pickup... there were no signs of wear on the cap, rotor or the graphite tab.
I will check the clearance tomorrow...
Thanks for the help.
__________________
BDR 559
Indigo Blue, White Stripes
SBF 410
TKO 600 .82 OD (Road Race)
HP= Enough!!
Last edited by BDR561; 02-25-2009 at 08:48 PM..
Reason: spelling
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02-28-2009, 08:39 AM
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Senior Club Cobra Member
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Join Date: Jul 2007
Location: Odessa (Tampa),
FL
Cobra Make, Engine: BDR 559. 410 Stroker 72 block AFR205 Heads, Solid roller lifters, Comp Cams XR286, Eagle 4" stroke internally balanced with chevy journals, Oliver rods, Probe Forged pistons, Mighty Demon, Super Victor, MSD Digital 6.....
Posts: 260
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Not Ranked
rokndad,
Thanks for the tip... gaddep it as .022 and I'm back in business. Wonder why MSD makes no mention in the instructions???!!!
__________________
BDR 559
Indigo Blue, White Stripes
SBF 410
TKO 600 .82 OD (Road Race)
HP= Enough!!
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02-28-2009, 10:59 AM
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Senior Club Cobra Member
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Join Date: May 2007
Location: San Clemente,
CA
Cobra Make, Engine: CSX 4758, CSX 381 Keith Craft 482 w/ Weber 48 IDA's
Posts: 492
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Not Ranked
BDR,
You're welcome. Before I stumbled upon this issue, there was no mention of it anywhere on the MSD site, nor on this site. I even had to call MSD twice (after replacing the 6AL unit, cap, rotor and pickup....which at the end of the day I didn't have to do) before I reached someone that suggested checking the gap.
MSD said they were going to issue a tech bulletin about this, and start including it as an instruction with each new pickup.
Glad to hear my experience helped you and she's back to running. It baffled me for two weekends.
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02-28-2009, 01:21 PM
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Senior Club Cobra Member
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Join Date: Jul 2007
Location: Odessa (Tampa),
FL
Cobra Make, Engine: BDR 559. 410 Stroker 72 block AFR205 Heads, Solid roller lifters, Comp Cams XR286, Eagle 4" stroke internally balanced with chevy journals, Oliver rods, Probe Forged pistons, Mighty Demon, Super Victor, MSD Digital 6.....
Posts: 260
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Not Ranked
I guess I can return the MSD Digital 6 that I bought to replace what I thought was a defective unit.
Something so simple caused such a headache....
__________________
BDR 559
Indigo Blue, White Stripes
SBF 410
TKO 600 .82 OD (Road Race)
HP= Enough!!
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