Who has one installed on their V8 grands? Does it actually give you the mid range HP it claims to? Pros/Cons

I heard that they are not worth the money. However I am wondering the same question. I did the cone K@N on my original intake.

I have a 97 5.2L and I don't think there is room for a TB spacer under my hood. You may want to check your clearance and look at a bored out throttle body instead.

I've heard generally good things about TB spacers, it's best to get a helix bore spacer that spins the air. AirRaid makes one, complete with helix bore tube and K&N cone for the V8 (I think). Which brings me to my next blab:

Does anyone and exactly who and what part number make a helix bore TB spacer for the ZJ I6??? Some people have suggested some sites and I've looked but could never find it. AirRaid makes them for all Jeeps EXCEPT the I6!!! I want a helix TB spacer for my I6.

Haven't heard many good reveiws....

poweraid makes the TB spacer for the 4.0 engine, had one on my XJ, wouldn't do it again. HP gains, what little there might actually be, are close to impossible to actually feel. all it feels like is you wasted money. The helix bore thing is a scam to get more people to buy it. What you'll end up with is an annoying whistle at certain rpms. (I dont know about the 5.2 spacer, Im only referring to the poweraid 4.0 I-6 spacer.)

The Poweraide spacer for your XJ, did you do spacer only or the full intake? Where you running a K&N (or similar) high-flow filter? What about your exhuast? Did you let the rest of the vehicle breathe easy?
A friend did a helix tower in his Chevy 454 truck and noticed a huge difference, and I kind of liked the whistle under low-mid RPMs, but not sure if it would get annoyting after a while. If I may ask, how much was your spacer/setup and where did you buy it?
Also did you upgrade your ignition at the same time or at least give the vehicle a tune-up?

I will sell you mine for 20 bucks and you can find out. It is decent, but not a 100 dollar mod. It fit on my 97 5.2L fine.

Think about it people! just because there is a small spiral around the bore, why would the air spin? It would just flow over the grooves. The spacers seem like total BS. don't waste your money on this crud. Put $70 into a tune up or K&N filter or flowmaster muffler.

Gosh, I see, so many unhappy customers, perhaps I shouldn't waste my time then.
The idea is mid to low RPM improvements because the butterfly doesn't open much, forcing the air through the spirals. As I've read (other places) when you cock it wide open no it does not spin the air.
I have the 4.0 I6 so the 5.2 won't work in mine, but thanks. If people really didn't have that much luck throwing a helix bore TB spacer in their I6 then heck with it, but I'd like to get some more input.

TB spacers were designed more for carbs. They do two things. 1. they increase the plenum volume to handle the sudden pressure drop when you romp on the pedal, and 2. Disturb the airflow to help better atomize the fuel.

The Fuel injected engines see little benefit, but I run one to increase the plenum volume for better(not much, but theorectical) throttle response.

Not really worth the money. I made my own at the machine shop at my old work, but I would never pay for one.

If you really want awesome low to mid range improvement, get a new cam. http://www.accuratepower.com has some reasonably priced grinds. I had a site for mopar performance(That might be it actually) that had some also for the 4.0L
M.

I'd like to see what you've got on the Mopar stuff for the I6. Mine's doing great so far at 126K but I plan to rebuild when the time comes. Accurate Power had some pretty insane stuff about the 4.0, I couldn't believe you could do so much with that engine!!! They seem nice enough but I wonder what their reputation is.. I'd sooner trust Mopar stuff than some place that hasn't been around for a while or people have complained.
If I could find a helix bore spacer for around $20 for my I6 I might consider it but usually they run $60-$80. From what you guys say apparently it's not worth it. Darn. Guess it's on to better ignition and aspiration.

The MOPAR cams are "Old School" (Straight I/E durations, relatively low lift). I much more preferr the "split duration" cams listed on our site.( http://www.accuratepower.com/Jeep/Parts.html#StrokerParts ) All have been dyno tested to be compatable with the computer. I HAVE been around a while. You will have to look pretty hard to find anybody complaining about POWER. I've sold plenty of that for the 4.0. I will be dynoing a spacer eventually, untill then I am more than a bit skeptical of the claims made.

Alright, I'm interested. :-) When time comes to rebuild the old I6 I'll be picking up some parts there. I probably won't build a stroker motor (yeah right, I wasn't going to lift the Jeep more than 2" in the first place, now I'm going 5.5") but I definitely want to build it better. Thanks for the info, I would like ot hear of dyno testing a helix TB spacer. Never expected the discussion to go this far..

Old school aint the word for it...lol...when CryCo bought AMC in 87...someone at MP thought they should start making HP parts for Jeeps...they then called all of their suppliers and asked em what they make for Jeeps...and that's what wound up in the MP catalog...none of it was engineered by Mopar...in the case of cams the old head of engineering thumbed through their main cam supplier's list of lobes...and picked a few...and threw em in the catalog...what works for drag racing V8's doesn't necessarily work for injected, low RPM inline sixes...specifically the short centers...all you'll do is throw away low end throttle response...and pick up mid range you'll never feel or use...I'd call Mike...RedEye

<font size=-1>[ This Message was edited by: RedEye on 2002-03-08 14:38 ]</font>

One thing my I6 has (with a gutted cat) is low-end torque. From stop I can slowly push it to about half and sink back in the seat. Mid-range there's pretty much nothing there. Get around 3400K RPMs and higher it goes nuts. Weird. Drop-in K&N, gutted cat, Flowmaster 40 series (love the grizzled, gravelly sound myself), Accel plug wires.
I agree for crawling it's all in the low-end pedal. Passing cars down the freeway is nice when it kicks down and pulls me back in the seat at higher RPMs. Not bad for an I6 w/ 127K miles.
Someone straighten me out here, bigger exhaust pipe=higher horsepower, smaller exhaust pipe=bigger torque? Or how does that work and why?

I got sucked into this mod when I first bought my ZJ many years ago. I went with the DonAVee TBS. It may not do anything yet, people always ask about the cool looking blue ring under the hood.

Hunter

:lol: Yea I bought this spacer and it is doing its job - which I assume is creating a space between the TB and the intake manifold and looking cool. What else is it supposed to do?

I've heard generally good things about TB spacers, it's best to get a helix bore spacer that spins the air. AirRaid makes one, complete with helix bore tube and K&N cone for the V8 (I think). Which brings me to my next blab:

Does anyone and exactly who and what part number make a helix bore TB spacer for the ZJ I6??? Some people have suggested some sites and I've looked but could never find it. AirRaid makes them for all Jeeps EXCEPT the I6!!! I want a helix TB spacer for my I6.

I have a spacer from airRaid for my 4L. Had it for over a year. I don't know the part number off hand but I can look it up when I get home.

The tornado which is suppose to fit in the air tube is suppose to do the same thing. You can do your own research and find out what is said about them. I had a kid at the local (we lower all 4x4's and mini trucks) shop rave about it so I decided not to try it based on the crap I see come out of his shop.

Maybe I could have Bender and Professor Farnsworth from Futurama whip up something cool for me. He could use assorted lengths of wire. :D

from SPEEDTWEAKS.NET (note the last paragraph):

"Throttle Body Spacers (Primarily the "Helix" style):

These spacers do not provide any gains in HP at all. They claim to increase TQ and MPG but we tested one and it gained nothing. The Dyno showed no gains in HP or TQ. We also had contacted one of the manufacturers for their comments on them and here's the direct quote (from email):

--------------------------------------------

From: AirAid Info
Subject: Re: AIRAID.COM Contact Form
Date: Fri, 09 Mar 2001 09:20:36 -0700

Dear Sir, thank you for your inquiry in our products. The spacer makes no HP on the Dyno. It makes all of it's power in torque in the low end. If you haven't noticed any power on the Dyno or the track then it's doing what it's supposed to. You would not see any gains down the 1/4 mile or increases on the Dyno. The idea of the spacer is to improve overall drivability and fuel mileage. In most cases when people install a bolt on part they expect better mileage and power, what happens is they are into the throttle a lot more than before trying to test performance and that's when the decrease in mileage happens.

Sincerely,

<Airaid Technician>
-------------------------------------------

Points to look at:

"The spacer makes no HP on the Dyno. It makes all of it's power in torque in the low end."
"If you haven't noticed any power on the Dyno or the track then it's doing what it's supposed to."
"The idea of the spacer is to improve overall drivability and fuel mileage."
So...it doesn't make any more HP, is not supposed to help in 1/4 mile performance (or on the Dyno), and is mainly for mileage and bottom end Torque. Well, Dyno's show TQ figures and there were no changes, mileage stayed the same, and 1/4 mile performance wasn't affected on the several others who have tried it (including us). They also are still not able to explain how the spacer keeps the swirl effect through the two turns (90 degree and 45 degree) in the intake plenum of the Dodge Ram/Dakota/Durango manifolds.

While the Throttle Body Spacer showed no gains on the 3.9/5.2/5.9L Magnum engines, the 4.7L engines have been reported to show noticeable gains from the spacer. Why? It's a much more efficient intake system with less restrictions than the Magnum engines. It may work just fine for the 4.7L crowd but we'll look into this at a later date for Dyno and long term MPG testing."
****************************

Wow, that's fantastic!!! :thumbsup: Way to call a manu on their claims!! :spank:

I haven't looked at the intake on my 4.0 I6 in a while to see what kind of roller coaster ride it takes. I pondered on occasion perhaps doing a large K&N cone, one of those "Tornadoes" you see in the infomercials in a smooth-bore tube, and a helix-bore TB spacer (if they all spin the same direction) to see what it would do. But this would have to be sponsered by a third party--I'm not going to waste my money on it!

I still understand still at least most 242 c.i.d. users have not experienced any reasonable gain in it as well.

The thing sounds like "snake oil," but with a high cost...I think that those of us with a 4.0 would do better with either cams or supercharging...I know, not cheap, but I think it makes more sense than to plunk out money on items which don't seem to do much of anything...traintrackker

Hey guys, I have a $10 solution as to if you want a throttle body spacer. I looked at the Don-A-Vee model ($50) and thought, hey, I can build that. I went to AutoZone and brought a 2 barrel-4barrel adadpter and spacer kit ($7) and a peice of longer bolt stock. I cut the bolt stock in the store, and installed it in the parking lot. I was out a total of 10 whole dollars and 15 minutes. I didn't really notice a difference in acceleration, but I took it back off after 3000miles and it felt like the Jeep didn't crusie as well. Where I did notice the improvement is when you're crusing at 70-75 mph and you punch it to pass. My 318 with stock airbox w/K&N and stock exhaust will really growl then. I also trimmed the inlet tube going into the filter box. Just my .02 if you're really curious and have to try it for yourself. You can even paint it that pretty blue color...lol :newbie:
http://photos.groups.yahoo.com/group/moorewheelingthanu/vwp?.dir=/Grand94jeep%27s+Album&.src=gr&.dnm=custom+TB+spacer+$10.jpg&.view=t&.done=http%3a//photos.groups.yahoo.com/group/moorewheelingthanu/lst%3f%26.dir=/Grand94jeep%2527s%2bAlbum%26.src=gr%26.view=t

Sounds like a great idea. I'd love to see it, except it tells me I have to log in...
I'd like to know the P/Ns you used, but if it's for a V8 the parts will not fit my I6.

Sorry about the link. I keep forgetting about that. Its for my yahoo club. You'll just have to join to see the pic. As for P/N..well, its on the shelf at AutoZone. I can't tell you much beyond that. As for a spacer for your 6cyl, and I know I'll get flamed for this, you can cut a piece of soild wood (not plywood, particle board, or OSB) and get some longer bolts and try it temporarily to see if it makes a difference. I'd recommend a 3/4" piece of Oak or some other hard wood. Just cut it, drill it, sand it and try it. Lowes hardware sells small pieces of wood for cheap, or just check out a construction site and most guys will let you have scrap for free. I know it sounds off the wall, but its better than paying out the behind for a piece of crap that won't work. Just my .02. :newbie:

I just stopped by autozone.. i was looking around... i saw this aircleaner raising kit... is that what you purchased? Thats the only thing that looked remotely like it would work. It was this 2 barrel air cleaner adapter raising kit thing. and it was $6.99... thought that might have been what you were talking about.. wasnt sure... thanks.

Hey, im curious how this works actually. When you look at the other TB spacers, they are actually under the TB. THis one appears to just lift the air intake hose. Since most TB Spacers are designed to spin the air, wouldnt this one be sort of disfunctional being above the butterfly valves?

For $7 ill try it, but I still am curious about that. Thanks.
=-Ben

Well, from my best guess on how it works is that it stops to turbulence in the air from that little throttle body cap. I don't see how you can go from a 2.5-3" inlet to that little pancaked intake on top of the throttle body myself. Like I said, I only noticed a difference after about 65mph. Also while you're under the hood, remove the inlet tube from the air box to the grille and you'll get sort of a Ram-air effect at higher speeds. Hope this helps yall out some and saves some money for ya. :newbie:

Sorry, I got a little overzealous :spank: with my typing. I meant when you take that tube out, to trim the edge where it sorta cups around and then re-install it. :thumbsup: :newbie:

Decision made,!!thanks guy's I was about to get an Airaid spacer for my 03 4.7 HO GC, I to feel that spiral bore to spin the air wouldn't do much or any thing at all.So I am putting it on a rolling road and tuned.