http://cgi.ebay.com/ebaymotors/Jet-C...m35a6f9f294any
thoughts on this? worth my $80?

 

Don't waste your money, throttle body spacers don't work on multi-port injection engines.

 

No. It's not worth the cost of raw materials used to make it.

The "theory" behind it, is the swirling action of the air will help atomize/mix the fuel and air better.
This might be true with carb/TBI, but with the Magnum motors (1992+), the fuel is added just before the intake valve, and therefor, this has nil effect.

You're better off getting a larger throttle body, or putting in an electric cooling fan.

Other possible ideas, found here: https://dodgeforum.com/forum/1st-gen...ml#post2008979

 

thank you for the fast responses! what are the gains when using an electric cooling fan? thanks in advance

 

The actually HP gain is hard to tell without it being dynoed. But most likely 5 HP. Just imagine when when fan is engaged. You can feel the drag on the engine. Then without it engaged you can feel it freed up. It is worth it! I have done it.

 

I have a electric fan, Just to lazy to install it. I had it on my ZJ and noticed a nice gain on the 4.0L. I'm going with Crazy. Do an electric fan 1st.

Just one question before I do it. Do I need to put a nut on the pulley since the clutch is removed? I can remember if the pulley was fixed to the pump or not.

 

The pulley is pressed on the pump. Some say you don't need the nut. But for me I rather be safe. So I cut off the nut on the clutch to keep it secured on.

 

Cool thanks. I think I'm gonna do that before I put anti-freeze back in. Since I had to take out the radiator and re soldier the top of the tank. Did you see a big difference on the 5.2?

 

Being compared to when the fan is engaged, yes you can feel a TON of difference.

 

Good cause you know how some of these mountains out here will eat you're gas mileage up. Maybe the fan will help me maintain above 20mpg's