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-   Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 (http://www.ramforumz.com/forumdisplay.php?f=83)
-   -   help!!! (http://www.ramforumz.com/showthread.php?t=132385)

Chris b 01-31-2013 07:49 PM

help!!!
 
WTF!!! just got finished installing the 84mm fastman throttle body and everything was all good tell I try to put the K&N cai. back on. The neck is smaller then the throttle body way smaller!!:doh:

Outlaw 02-01-2013 11:38 AM

Should have bought the 87mm moes one. I did. Direct swap. Perfect fit!!

Flaminchiten 02-01-2013 11:49 AM

I thought I read somewhere that the 2012 throttle body was a little different or maybe it was the 2013, I would contact moes and see if they can give more information

Chris b 02-01-2013 12:03 PM

Got the fastman cheap!!! So i'm happy with it, its the K&N cai that's the problem?

Outlaw 02-01-2013 12:04 PM

My vararam goes on my 87 like a glove. :D

Blue thunder 02-01-2013 01:58 PM

Something isnt right. Both me and my buddy I have a 2011 and he has 2012 both have fast man throttle body and k&n cai no problems with fitment.

Chris b 02-01-2013 02:43 PM

Your K&N neck aint smaller than your throttle body???

Blue thunder 02-02-2013 05:02 PM

No we didn't notice any difference in size from stock to fastman?

CdnoilRAM 02-02-2013 09:52 PM

Chris, how much undersized is the K&N collar?

Quote:

Originally Posted by Flaminchiten (Post 1000300)
I thought I read somewhere that the 2012 throttle body was a little different or maybe it was the 2013, I would contact moes and see if they can give more information

The 2013 has a different TB, '05-'12 are the same on all the hemis whether it's a 5.7L, 6.1L, or 6.4L. The only difference between the '03/04 is it's a slightly different connector, but the mechanics are all identical.

Quote:

Originally Posted by cbrambo497 (Post 1000286)
Should have bought the 87mm moes one. I did. Direct swap. Perfect fit!!

Both the Moes and Fastman TBs are OEM cores that are ported, the outside diameter is the same as the stock one he took off. The reason he went with the 84mm is because the mods he has will take advantage of the extra volume flow that an 80mm diameter butterfly TB can't flow.

The problem is with the K&N coupler, which is a simple fix. My old AirAid was a bastard to get over the TB neck, so I just measured the outside diameters of the inlet tube and TB and ordered a silicon expansion fitting that would match.

Chris b 02-02-2013 10:40 PM

Thanks, that's what I did to day. order a specter 4" to 3.5" and im pretty sure this will fix it. I will have to cut some off the K&N cai. Its like the neck of the cai will almost fit in the throttle body. lol


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