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In the process of building up a personal car for SM and figured I would ask what the consensus is on power plant frame wiring harness. I've seen some leave it alone and some pass it through to the inside of the car. Is passing it through to the inside legal? If so, how does one go about reconnecting everything properly?
PPF Wire Harness
Started by
Dan Spangler
, 02-07-2017 08:02 PM
#1
Posted 02-07-2017 08:02 PM
Dan Spangler
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#2
Posted 02-07-2017 10:21 PM
chris haldeman
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Leave it alone
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3 podium finishes
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#3
Posted 02-08-2017 08:05 AM
davew
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I relocate the battery cable to the interior as part of the master switch install. The small wires need to be hooked up, so i leave them under the car, but secure them to the brake/fuel lines rather than the PPF. This makes any job requiring removal of the PPF (trans, clutch, diff) easier. Depending upon year of the car, you may need to extend some of the wires.
That wire loom is usually pretty nasty, so clean it up while you are at it.
Dave
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Dave Wheeler
Advanced Autosports, the nations most complete Spec Miata shop
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#4
Posted 02-08-2017 08:10 AM
Jim Drago
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I leave mine stock as well.
I think there are pros and cons to both methods.. I dont have many transmission failures ( one personally in 12 full seasons) so I leave it alone. We have one guy on our team that shall remain nameless that we change lots of transmissions. I think his new car the harness will be rerouted 
Jim
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#5
Posted 02-16-2017 12:56 PM
Dan Spangler
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I think I'll leave it alone for now!
Anyone know what gauge the stock positive battery cable is? I've been trying to search for it but have found conflicting results.
Anyone know what gauge the stock positive battery cable is? I've been trying to search for it but have found conflicting results.
-Dan
#6
Posted 02-17-2017 06:23 AM
steveracer
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#7
Posted 02-17-2017 07:20 AM
38bfast
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Two things make trans swaps much easier. Rerought the wires and a flex clutch line. It's almost a gaurentee at some point you are going to have to do a trans swap. As Jim stated some more than others. I had one customer that was every weekend.
Ralph Provitz
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#8
Posted 02-17-2017 09:05 AM
davew
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Two things make trans swaps much easier. Rerought the wires and a flex clutch line. It's almost a gaurentee at some point you are going to have to do a trans swap. As Jim stated some more than others. I had one customer that was every weekend.
We are also changing our down pipe studs from the factory steel units to ARP Stainless steel studs and nuts. Stronger and never rust.
Dave Wheeler
Advanced Autosports, the nations most complete Spec Miata shop
Author, Spec Miata Constructors Guide, version 1 and 2.0
Building Championship winning cars since 1995
4 time Central Division Spec Miata Champion car builder 2012-2013-2014-2017
Back to Back June Sprints Spec Miata 1-2 finishes 2016 and 2017
5 time June Sprints winner in Mazda's
6 Time Northern Conference Champion Car Builder
2014 SCCA Majors National point Champion car builder
2014 SCCA Runoffs winner, T4 (Bender)
2014 Central Division Champion, ITS (Wheeler)
2013 Thunderhill 25 hour winning crew chief
2007 June Sprints winner, (GT1, Mohrhauser)
Over 200 race wins and counting.
www.advanced-autosports.com
dave@advanced-autosports.com
608-313-1230
#9
Posted 02-17-2017 09:18 AM
Jim Drago
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We are also changing our down pipe studs from the factory steel units to ARP Stainless steel studs and nuts. Stronger and never rust.
good idea
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#10
Posted 02-17-2017 10:33 AM
FTodaro
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I leave mine stock as well.
I think there are pros and cons to both methods.. I dont have many transmission failures ( one personally in 12 full seasons) so I leave it alone. We have one guy on our team that shall remain nameless that we change lots of transmissions. I think his new car the harness will be rerouted
Jim
Erik, Erik Erik.
Did i say that out loud?
Frank
TnT Racing
SCCA Ohio Valley Region
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