Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 04-12-2012, 08:58 AM
Member
 
Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 847
bossmanjunior is on a distinguished road
WJ Throttle Body [First Post]

I have a 02 Wj 4.7 (non-H/O) with a K&N FIPK, Borla Catback Exhaust, and Superchips tuner. I was wondering if I would benefit from the larger throttle body (maybe around 70mm all the way through). I've seen several options - BBK which has mixed reviews, Fastman which seems to be the cheapest, or possibly Flyin Ryan which I've seen on this forum but know nothing about. Any suggestions as to whether I would benefit from a TB upgrade and/or which one to go with?
__________________

__________________
Reply With Quote
  #2  
Old 04-12-2012, 09:30 AM
GrnBeltWarrior's Avatar
Member
My Jeep: 2004 4.7 HO WJ
 
Join Date: Mar 2012
Location: Apple Valley, MN
Posts: 66
Thanks: 2
Thanked 1 Time in 1 Post
Rep Power: 948
GrnBeltWarrior is on a distinguished road
Re: WJ Throttle Body [First Post]

Welcome to Jeep Garage.

I have the Fastman TB. Only because he is a short drive away from me. Talking with Dan at Fastman, he said that gains are minimal above 68mm. I noticed a improved throttle response and overall smoothness of the throttle. I have some pictures in my other thread on it (Fastman Throttle Body).

I only have the K&N FIPK with it. Looking to do the 3" exhaust and chip further down the road.

In theory it would improve air flow into the manifold as its wider and reduces the delay when the TB plate opens. On the stock TB the plate moves a bit before it clears the lip. On a bored out one it does not have that restriction. I don't have numbers to back anything up. I would definitely make the purchase again.
__________________

__________________
[SIGPIC][/SIGPIC]
Red 2004 WJ Columbia 4.7L HO
K&N FIPK, Fastman TB, Addco Rear Sway bar, IRO 4" Long Arm Lift with DT8000, adjustable trackbar, JKS Quick Disconnects.

Red Rock 2007 WK 3.7L
Stock
Reply With Quote
  #3  
Old 04-12-2012, 10:09 AM
TJXJWJ's Avatar
The "pre" SRT 8
My Jeep: 2004 4.7 HO WJ
 
Join Date: Jun 2010
Location: Aurora, OH
Posts: 3,441
Thanks: 197
Thanked 72 Times in 61 Posts
Rep Power: 286747
TJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond repute
Garage
Re: WJ Throttle Body [First Post]

If you give me a few days, I can let you know some more. I've got a 70 coming from FlyinRyan as we speak
__________________
Tony-04 Limited HO, DkKhaki w/tan leather int. All LED lighting, 5000k Xtreme HID projs. (deambered)&fogs w/CCFL rings, tinted tails&3rd LED brake lt, fnt glass tinted to match, shawty antenna, 6 Polk speakers, K&N FIPK, FR 70mm TB, TCM#10 snip, Flashpaq'ed on 91 tune, Bilstien HD's, Addcos, polished 20" SRT reps, Hankook Ventus Evos (255-45), Weathertech mats, EBC USR rotors, EBC Greenstuff pads, Magnaflow muffler, RB1 Nav w/iPod kit, de-badged, roof rack delete.
09 Liberty KK Rocky Mountain Edition. Added Mopar Remote Start kit, Weathertech Mats, K&N drop-in.
PAST JEEPS : 99 TJ Sport, 98 XJ Sport, 06 WK Laredo
Reply With Quote
  #4  
Old 04-12-2012, 12:46 PM
Member
 
Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 847
bossmanjunior is on a distinguished road
Re: WJ Throttle Body [First Post]

yea please let me know how it goes. Also if you don't mind me asking how much you paid for it? (I would ask Flyin Ryan but i don't have the requisite 5 posts to PM an admin )
__________________
Reply With Quote
  #5  
Old 04-12-2012, 12:51 PM
TJXJWJ's Avatar
The "pre" SRT 8
My Jeep: 2004 4.7 HO WJ
 
Join Date: Jun 2010
Location: Aurora, OH
Posts: 3,441
Thanks: 197
Thanked 72 Times in 61 Posts
Rep Power: 286747
TJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond repute
Garage
Re: WJ Throttle Body [First Post]

Mine was a special deal due to some cosmetic issues with the one I was buying, so what I paid may not be accurate for a perfect one. You can go on his page though...he's in the vendors section. I think he has some listed with prices.

http://www.jeepgarage.org/f59/
__________________
Tony-04 Limited HO, DkKhaki w/tan leather int. All LED lighting, 5000k Xtreme HID projs. (deambered)&fogs w/CCFL rings, tinted tails&3rd LED brake lt, fnt glass tinted to match, shawty antenna, 6 Polk speakers, K&N FIPK, FR 70mm TB, TCM#10 snip, Flashpaq'ed on 91 tune, Bilstien HD's, Addcos, polished 20" SRT reps, Hankook Ventus Evos (255-45), Weathertech mats, EBC USR rotors, EBC Greenstuff pads, Magnaflow muffler, RB1 Nav w/iPod kit, de-badged, roof rack delete.
09 Liberty KK Rocky Mountain Edition. Added Mopar Remote Start kit, Weathertech Mats, K&N drop-in.
PAST JEEPS : 99 TJ Sport, 98 XJ Sport, 06 WK Laredo
Reply With Quote
  #6  
Old 04-13-2012, 02:44 AM
FlyinRyan's Avatar
Senior Member
My Jeep: 2002 4.7L WJ
 
Join Date: Jul 2009
Location: Fort Myers, Florida
Posts: 2,801
Thanks: 33
Thanked 30 Times in 29 Posts
Rep Power: 88577
FlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond repute
Send a message via AIM to FlyinRyan
Re: WJ Throttle Body [First Post]

Quote:
Originally Posted by bossmanjunior View Post
I have a 02 Wj 4.7 (non-H/O) with a K&N FIPK, Borla Catback Exhaust, and Superchips tuner. I was wondering if I would benefit from the larger throttle body (maybe around 70mm all the way through). I've seen several options - BBK which has mixed reviews, Fastman which seems to be the cheapest, or possibly Flyin Ryan which I've seen on this forum but know nothing about. Any suggestions as to whether I would benefit from a TB upgrade and/or which one to go with?
Welcome to the forum.

As described above, I have a vendor subforum.

Not to discredit Fastman- he's a good guy, makes a good product- but I don't subscribe to the "68mm limit" theory that has been passed around as fact for years. I doubt Bruce at F&B would have wasted his time and money making 70 & 72mm TB's out of billet stock.

My usual porting incorporates the stock 68mm blade, but I open up the inlet significantly over, say, a 68mm striaght bore. No problems and the difference is something people report back as pretty significant.

Better yet, I have had users try a standard ported TB from me, then send it back to be upgraded to a "Beyond Ported" TB (BPTB for short), boring it to 70mm and notice further improvement.

Here's some other food for thought....The STOCK TB's for the 2008+ 4.7 and the new 3.6 Pentastar are both 74mm....and in case you're wondering, yes, even the Pentastar gains from porting.

I also saw gains from a 71mm bored TB on my own personal WJ, and then some more with inlet porting.

So in conclusion, it's not necessary, but not useless either to go bigger than 70mm. Bigger is better, within reason.

I am moving next week so I am not doing any porting until further notice, I can get you a 70mm bored unit but it will be several weeks before I have any more made.
__________________
Due to my workload, please do not PM me as I do not regularly check my PMs. Thank you :)
Reply With Quote
  #7  
Old 04-13-2012, 08:41 AM
Member
 
Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 847
bossmanjunior is on a distinguished road
Re: WJ Throttle Body [First Post]

Okay thanks for the heads up. My initial reaction when I saw that about the 68mm bore was the same thinking as you: even if gains are minimal, why NOT go bigger? Is there any disadvantage to a 70/71 mm bore? Also, can you tell me a little bit more about the Beyond Ported TB's you sell? How is the blended inlet an advantage (and what exactly does that mean? - sorry noob here) Thanks FlyinRyan
__________________

__________________
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Throttle body for v6 Seandmac Engine Performance/Intakes/Exhausts 0 03-13-2012 09:22 PM
Throttle Body Help psycojeep Troubleshooting/Problems Discussion 17 12-22-2010 04:03 PM
throttle body n8jay Grand Cherokee - WK 4 08-16-2010 03:55 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 05:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community