70mm Throttle body

[kephj]

just bought a 70mm throttle body, do i need a spacer? and what's the purpose of a spacer anyway?

 

[rowdie- stang]

if you have an egr system you need a 70 mm egr spacer. If you use the stock one it defeats the purpose of the 70mm throttle body

 

[kephj]

i don't know much about it, how do i know if i have an egr system? it's an 89 gt pretty much stock. and the throttle body i just bought was a mac.

 

[rowdie- stang]

87 - 93 Mustangs have an egr system (exhaust gas recirculation system) Part of it is the spacer between the throttle body and the intake. Stock is about I think 57mm (both the throttle body and egr spacer) So you need both for the 70 mm to work

 

[kephj]

thanks alot man, i wouldn't have had a clue

 

[jb89coupe]

If this is going on to a stock manifold you're wasting your time anyway. The stock tb opening is only 63mm. Even if you port matched it to accept the 70mm tb/spacer, the lower intake is the bottle neck and it gets all the air it wants with the stock tb/spacer setup. Hold onto that tb, pick up a used cobra intake (with the cobra you won't need an egr spacer), and put them on the car at the same time.

 

[BaXTeR3221]

If this is going on to a stock manifold you're wasting your time anyway. The stock tb opening is only 63mm. Even if you port matched it to accept the 70mm tb/spacer, the lower intake is the bottle neck and it gets all the air it wants with the stock tb/spacer setup. Hold onto that tb, pick up a used cobra intake (with the cobra you won't need an egr spacer), and put them on the car at the same time.

I agree, no need to spend like $50 on a spacer, just put it towards a better intake.

 

[criticman]

Good luck finding the intake used. You will likely have to go with a reproduction FRPP cobra intake instead.

Either way, they are right in saying to wait.

 

[Henceforward]

You need this 70mm EGR spacer if you plan to put it on a stock upper.

Goes here on the intake...

You have this already, put it on the Cobra Upper for better performance.

 

[Henceforward]

Good luck finding the intake used.

Ebay...

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7972632599&category=36474

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7973427303&category=36474

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7973564925&category=36474

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7973299296&category=36474

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7973305618&category=36474