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General Forums => The Mess Hall => Topic started by: dadickster on March 18, 2007, 09:39:53 AM

Title: TBS question
Post by: dadickster on March 18, 2007, 09:39:53 AM
I have a 94 yj that I am installing  a 4.0 TB & TBS. I am getting the AIRAID TBS. Do I need the TBS for a 4.0 since I will have a 4.0 TB, or for the 2.5 because that is the engine? Thanks
Title: Re: TBS question
Post by: Jesse-James on March 18, 2007, 10:39:19 AM
Doesn't matter, they are the same. Just get one with the same bore size as the TB you are getting.
Title: Re: TBS question
Post by: Jeffy on March 18, 2007, 01:15:05 PM
If I was buying one I'd probably go with the smooth bore ones on ebay that sell for under $50.
Title: Re: TBS question
Post by: dunklervogel on March 18, 2007, 02:04:56 PM
Are the spacers with a helix/spiral bore just bs or does it actually do something?  Always wanted to ask that.
Title: Re: TBS question
Post by: Jeffy on March 18, 2007, 05:03:38 PM
Are the spacers with a helix/spiral bore just bs or does it actually do something?  Always wanted to ask that.

Well, seeing that a commercial TBS like the Poweraid, JET, Hesco, etc... cost around $70 and up and the ebay ones are $50 and under, I would save my $20.  The bore on the TBS with the cuts are usually smaller then the TB.  The ones with a very shallow spiral don't really have enough surface area to produce a swirling effect and the ones that do reduce the size of the bore.  Then you have to get that swirling air through the intake and through the head to the valves.  I don't think the swirling will get that deep into the intake either.  It has to take a 90* turn at the bottom of the intake and get to the head before it's able to mix with the fuel.  That's a lot of swirling.

With that said I have a Poweraid but I bought it when no one else made them and they didn't even have an official 2.5L spacer.  I should probably hone my TBS.  Maybe one of these days.
Title: Re: TBS question
Post by: lanulos89 on March 18, 2007, 06:09:15 PM
wasnt it proved that tbs rob you of power, i kno b4 my bigger wheels, i cldnt get my tires to spin with my tbs on, and when i took it off i got em to spin,  that was with the 2.5 tb i dunno does the 4.0 tb and spacer not rob the power away?? sry dont mean to hijack
Title: Re: TBS question
Post by: Tall Boy on March 18, 2007, 07:52:20 PM
 :uhoh:  People stare at you when you drive by though  :uhoh:. They give you the look like "   what the hell is wrong with that guys car "  .     :thumbsup:
Title: Re: TBS question
Post by: lanulos89 on March 18, 2007, 08:13:40 PM
haha yea or you tell em its the super charger spooling up, since i put on my 4.0 tb mine whistles, haah its pretty cool tho so im not concerned
Title: Re: TBS question
Post by: jcsanders79 on March 18, 2007, 09:02:45 PM
I saw an improvement with my TBS.
Title: Re: TBS question
Post by: SKI BOY on March 19, 2007, 05:25:57 AM
Some of the "generic" ones on ebay that I've seen do  have  a different bore size for the 4.0 vs. the 2.5. Ask the seller  what the size is and get the same as the 4.0 TB, so you don't add restriction!
Title: Re: TBS question
Post by: Mozman68 on March 19, 2007, 07:01:37 AM
I like TBS....they show re-runs of Seinfeld and other good shows.... :whistle:
Title: Re: TBS question
Post by: dexetr30 on March 19, 2007, 09:00:09 AM
haha yea or you tell em its the super charger spooling up, since i put on my 4.0 tb mine whistles, haah its pretty cool tho so im not concerned

Yeah, mine does this too. I thought I was the only one. I kinda like the sound of it.
Title: Re: TBS question
Post by: lanulos89 on March 19, 2007, 01:23:00 PM
I like TBS....they show re-runs of Seinfeld and other good shows.... :whistle:

good one moz
Title: Re: TBS question
Post by: Tall Boy on March 19, 2007, 07:53:24 PM
like vrocket yeeeaaah!  :biggrin: