egr spacer with bigger throttle body

fastford3388 · July 8th, 2008, 05:26 PM

hey guys.

I've got a 70mm bbk throttle body i want to install on my 89 gt. it seems as though the EGR spacer is only 60mm or so. should i bore it out? i've got access to a hone that will work. i was also gonna plug up the coolant lines running to the spacer. is this a good idea?

93hatch · July 8th, 2008, 05:43 PM

if you dont have heads or anything major done that tb is gona slow your car down, gona lose a shit ton of low end

fastford3388 · July 8th, 2008, 05:52 PM

hmmmm... i was told 70mm would be ok on stock. should i wait till i get an intake or cam? is it seriously gonna be that bad on a stock motor? what if i were to put that and an explorer intake on? would that be any better??

89lxroadburner · July 9th, 2008, 06:59 PM

70mm sucks on a stock mustang.. u lose a crap load of low end torque. 65 is tha biggest you want to use. if you have any decent mods ...than thats the way to go.

93hatch · July 9th, 2008, 07:56 PM

i noticed losing lowend when i just put my 65mm on, just wait till you do heads

93hatch · July 9th, 2008, 07:56 PM

Originally Posted by fastford3388

hmmmm... i was told 70mm would be ok on stock. should i wait till i get an intake or cam? is it seriously gonna be that bad on a stock motor? what if i were to put that and an explorer intake on? would that be any better??

1slo5.0 · July 9th, 2008, 08:20 PM

A bigger throttle body on a stock 5 liter is a waste of money and will do more harm than good. As far as boring the spacer, I'm not sure if you can or not without running into problems. I don't know if all of them are cast the same or if there are changes in the casting to accomadate the bigger bore. If it was me I would buy the correct spacer or eliminator plate instead of trying to rig something up. Do not plug the coolant lines if you are using an EGR plate. The coolant lines are there to cool off the EGR plate, why would you want to remove them?

July 8th, 2008, 05:26 PM	#1
fastford3388 Regular 1991 Mustang GT Join Date: Feb 2007 Location: Lisle, IL Posts: 367 iTrader: 0 reviews	egr spacer with bigger throttle body hey guys. I've got a 70mm bbk throttle body i want to install on my 89 gt. it seems as though the EGR spacer is only 60mm or so. should i bore it out? i've got access to a hone that will work. i was also gonna plug up the coolant lines running to the spacer. is this a good idea? __________________ - '90 Mustang LX-Sold "Debbie" - '89 Mustang GT- Deceased "Lucy" - '91 Mustang GT-70,000 mi "The Unicorn"

July 8th, 2008, 05:43 PM	#2
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,644 iTrader: 0 reviews	if you dont have heads or anything major done that tb is gona slow your car down, gona lose a shit ton of low end __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

July 8th, 2008, 05:52 PM	#3
fastford3388 Regular 1991 Mustang GT Join Date: Feb 2007 Location: Lisle, IL Posts: 367 iTrader: 0 reviews	hmmmm... i was told 70mm would be ok on stock. should i wait till i get an intake or cam? is it seriously gonna be that bad on a stock motor? what if i were to put that and an explorer intake on? would that be any better?? __________________ - '90 Mustang LX-Sold "Debbie" - '89 Mustang GT- Deceased "Lucy" - '91 Mustang GT-70,000 mi "The Unicorn"

July 9th, 2008, 07:56 PM	#5
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,644 iTrader: 0 reviews	i noticed losing lowend when i just put my 65mm on, just wait till you do heads __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

July 9th, 2008, 08:20 PM	#7
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	A bigger throttle body on a stock 5 liter is a waste of money and will do more harm than good. As far as boring the spacer, I'm not sure if you can or not without running into problems. I don't know if all of them are cast the same or if there are changes in the casting to accomadate the bigger bore. If it was me I would buy the correct spacer or eliminator plate instead of trying to rig something up. Do not plug the coolant lines if you are using an EGR plate. The coolant lines are there to cool off the EGR plate, why would you want to remove them? __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

July 9th, 2008, 06:59 PM	#4
89lxroadburner Newbie 1989 ford mustang lx 5.0 lets find out? Join Date: Jul 2008 Location: Chesapeake, VA Posts: 7 iTrader: 0 reviews	70mm sucks on a stock mustang.. u lose a crap load of low end torque. 65 is tha biggest you want to use. if you have any decent mods ...than thats the way to go.

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