Throttle Body Boring Questions

[96 Cherokee]

I my own 62mm diameter throttle butterfly made from 1mm thick stainless steel plate. Any engineering shop can cut & drill a plate for you. All I had to do thereafter was to file down the edges to make it fit precisely in the TB bore (I had that bored to 62mm) at an 8* angle when closed.
I found the difference between a 60mm and 62mm TB on a modified 4.0 to be very small. Not really worth it unless you're either going to increase the rev limit of the 4.0 or use it on a stroker.

Here is a 62mm TB ready to bolt on. What do you guys think? I'm looking for fuel economy for stop and go mostly slow speed driving driving all day long. Will an oversize TB help in this kind of use, or is it better suited to wheeling or hill climbing?

http://cgi.ebay.com/ebaymotors/Jeep...ewItemQQcategoryZ33558QQitemZ8011835000QQrdZ1

 

[SCW]

Hi, first post here, I'm considering having this done to my throttle body also, here is a link you should be interested in, price seems pretty fair considering how long it would take to k=make one by hand-

http://www.xj-armor.com/engine.htm

Next to find a machine shop around town....

 

[Gojeep]

Hi, first post here, I'm considering having this done to my throttle body also, here is a link you should be interested in, price seems pretty fair considering how long it would take to k=make one by hand-

http://www.xj-armor.com/engine.htm

Next to find a machine shop around town....

Good find as I have never seen them around before.