Engine backing plate

fastford3388 · March 24th, 2008, 02:31 AM

Anyone know what the purpose of the engine backing plate is? I think mine wasn't installed right when i had my rear main seal replaced and my starter continues to fall off of my bellhousing... could that do it?

looks like this

eBay Motors: 87-93 Mustang GT LX 5.0 5 Speed Backing Plate (item 180226678719 end time Mar-30-08 18:30:00 PDT)

Iwannagofast · March 24th, 2008, 02:47 AM

mostly just keeps the dirst and stuff from gettin all up in there with the clutch

Iwannagofast · March 24th, 2008, 03:09 AM

if your starter keeps falling out then either try thread locking the bolts or your bolt holes are stripp so you would probly have to drill them and then retap them and drill the holes out a lil bigger on the starter and get bigger bolts

fastford3388 · March 24th, 2008, 04:13 PM

Why would there be a backing plate on an automatic though? is there supposed to be one?? My car was originally a 5 speed and someone put an AOD in it. long story short, because my starter kept coming off the trans is FUCKED and i'm putting a 5 speed in it this summer. I'm just wondering if its required on an auto too?

trueblue01 · March 24th, 2008, 04:20 PM

Yep.

Iwannagofast · March 24th, 2008, 05:00 PM

the bell housing drops down below the block a good ways so if there was no plate anything could get up in there with your torque converter or clutch either one

turbodgumby · March 24th, 2008, 06:00 PM

there needs to be a backing plate there especially for the autos. the backing plate sets the depths that the converter is into the tranny(auto) if this is too tight it will wear out the thrust bearing in your motor really quickly. (stick) it sets the depth that the input shaft goes into the pilot bearing. again too much and you could be hitting your crankshaft with the input shaft of the trans. And its not likely they put it on wrong. the bolt holes and hole for the starter only line up one way.

March 24th, 2008, 02:31 AM	#1
fastford3388 Regular 1989 Mustang GT 14.70@99mph Join Date: Feb 2007 Location: Belvidere/Champaign ,IL Posts: 254	Engine backing plate Anyone know what the purpose of the engine backing plate is? I think mine wasn't installed right when i had my rear main seal replaced and my starter continues to fall off of my bellhousing... could that do it? looks like this eBay Motors: 87-93 Mustang GT LX 5.0 5 Speed Backing Plate (item 180226678719 end time Mar-30-08 18:30:00 PDT) __________________ - '89 Mustang GT - '90 Mustang LX

March 24th, 2008, 02:47 AM	#2
Iwannagofast Hardcore Enthusiast 1990 Mustang GT 9.39@76.09----1/8th mile Join Date: Feb 2007 Location: Arkansas Posts: 1,767	mostly just keeps the dirst and stuff from gettin all up in there with the clutch __________________ stang=40's dumped,pro 5.0 short throw, king cobra clutch, adj. clutch cable and firewall adjuster...pretty much stock 2001 tacoma=magnaflow, K&N cai, tb spacer, 2.5" susp. lift, 32x11.50s, electric fan, few dress up items

March 24th, 2008, 03:09 AM	#3
Iwannagofast Hardcore Enthusiast 1990 Mustang GT 9.39@76.09----1/8th mile Join Date: Feb 2007 Location: Arkansas Posts: 1,767	if your starter keeps falling out then either try thread locking the bolts or your bolt holes are stripp so you would probly have to drill them and then retap them and drill the holes out a lil bigger on the starter and get bigger bolts __________________ stang=40's dumped,pro 5.0 short throw, king cobra clutch, adj. clutch cable and firewall adjuster...pretty much stock 2001 tacoma=magnaflow, K&N cai, tb spacer, 2.5" susp. lift, 32x11.50s, electric fan, few dress up items

March 24th, 2008, 04:13 PM	#4
fastford3388 Regular 1989 Mustang GT 14.70@99mph Join Date: Feb 2007 Location: Belvidere/Champaign ,IL Posts: 254	Why would there be a backing plate on an automatic though? is there supposed to be one?? My car was originally a 5 speed and someone put an AOD in it. long story short, because my starter kept coming off the trans is FUCKED and i'm putting a 5 speed in it this summer. I'm just wondering if its required on an auto too? __________________ - '89 Mustang GT - '90 Mustang LX

March 24th, 2008, 04:20 PM	#5
trueblue01 Regular 1989 Mustang LX 10.98@126.7 NA Join Date: Feb 2008 Location: N.E. Ohio Posts: 417	Yep. __________________ Never fast enough.

March 24th, 2008, 05:00 PM	#6
Iwannagofast Hardcore Enthusiast 1990 Mustang GT 9.39@76.09----1/8th mile Join Date: Feb 2007 Location: Arkansas Posts: 1,767	the bell housing drops down below the block a good ways so if there was no plate anything could get up in there with your torque converter or clutch either one __________________ stang=40's dumped,pro 5.0 short throw, king cobra clutch, adj. clutch cable and firewall adjuster...pretty much stock 2001 tacoma=magnaflow, K&N cai, tb spacer, 2.5" susp. lift, 32x11.50s, electric fan, few dress up items

March 24th, 2008, 06:00 PM	#7
turbodgumby Regular 83 Mustang GT-Twin Turbo 10.82@126 Join Date: Mar 2008 Location: Port Arthur Posts: 83	there needs to be a backing plate there especially for the autos. the backing plate sets the depths that the converter is into the tranny(auto) if this is too tight it will wear out the thrust bearing in your motor really quickly. (stick) it sets the depth that the input shaft goes into the pilot bearing. again too much and you could be hitting your crankshaft with the input shaft of the trans. And its not likely they put it on wrong. the bolt holes and hole for the starter only line up one way. __________________ BOOST!!! The replacement for displacement!!

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