TC Drop-

A TC drop is just a "bandaid" to fixing the problem. The only true solution to the problem is a SYE.

Thier are several kits on the market. Some a bit more expensive than others. They are easily made yourself as well. My personal fav. is the skyjacker one, as it does come with the added bracket for the t-case shifter linkage as well. It's probally the most expensive ones on the market however.

Why don't you just put your spare TC in that already has the SYE installed?

TB Spacer-

Pointless and will offer no gains what so ever.

The idea behind a TBS is to swirl the air thereby somehow making a more dense charge in the combustion chamber. I do know, that if you make a more dense air charge in the combustion chamber, you will have more oxygen in the chamber, therefore making a bigger boom (= more power). What I do not know is, how swirling air can make it more dense as they advertise.

If the fuel is injected at the lower intake near the cylinder head, what exactly is the TBS combining with air in order to make this "super atomizing mixture"? If it is beneficial to "spiral" the air at the throttle body; than how is that "spiral" maintained once the air hits intake manifold and has to be distributed (we're not running multi-throttle bodies are we?)? If air velocity is good (as in forced induction through supercharger) like has been proven in 1800BC; than how can reducing air velocity be good?

I personally think that the spacer would have to be about 20 inches long in order to have a swirling effect on the entering air. I think it could possibly produce a "tumbling" effect caused by the low pressure area on the backside of each machined "swirl". But once again; how is this good? Why do we polish intake manifolds and heads to get it as smooth as possiable to increase flow? And a raised "swirl" is doing what? Does it work? Not from my experience. Ok MAYBE on a highly modded engine, but not on your stock 4.0L.

They look like they might make good cupholders though, for what its worth. Expensive; but the helix core design would probably keep the cup from falling out easily. Maybe they should add that to their advertising campains...

If your wanting gains, get a bored TB or upgrade to the 99-01 intake manifold.


-- Edited by LEAD_NOT_FOLLOW at 09:11, 2007-11-04

well ok then! ;)  yes i should swap t/c.... just gotta find the time and the help of SOMEONE who knows what they are doing on that... hmmm....
also, even after i do the swap, wouldn't it still help to put in a drop spacer to lessen the angle of the shafts???

if you have a case with an SYE i'd go that route.. changing out cases shouldnt be too incredibly hard unless a couple bolts snap in the process of whatever you're doing (usually my problem on my '93) if you have an SYE i dont believe a drop would be necessary.. although if you still do want to do a drop, i would go the make it myself route..