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TB ported and polished review!

7K views 31 replies 16 participants last post by  FlyinRyan 
#1 ·
Alright my JG friends. Here is the story.

Since TB ported and polished became a very popular subject here at JG, I decided to do some research about it. Needless to say it is a MUST DO MOD, especially 3.7s with not much out there for us. During my research, I came across the name Fastman in almost every search I did with very positive feed backs. I decided to order one. They are $230 before the core exchange program (-$40). Then, Irf called me asking if I want his Ryan's TB for an amazing reduced price, because he got the wrong one. Great! I thought would be a good opportunity to compare, test and most importantly, I'd be able to give JG a great and thorough review.

As you can see on the pics below, Ryan's TB had a wider opening than Fastman. But on the other hand, Fastman has much more smoother and polished finish to it, and also has a thinner profile throttle valve... and the stock.. Well, it's just crap!

First, I installed Ryan's and drove for about an hour, from Brooklyn NY to NJ. Then I installed the Fastman. Honestly, I couldn't tell the difference between the two, except Ryan's maybe a little louder. But as far as performance, I could definitely feel the difference between any of the two, compared to stock. The Jeep seems much quicker, from 0 to 60, I think I lost a full sec. From 40 to 80, WOW! amazing. It is definitely a mod I recommend. Either one, Ryan's or Fastman are both awesome. It really depends on your budget. ... Go get one! :thumbsup:





installation is easy and quick. You will need a flat screw driver and a Hex 8mm or 3/8" socket. that's all.

Additional mods during test.
• K&N 63 Series Air Charger Intake Kit.
• Stock exhaust.
• Power Wire from AIR RAM.

Cheers. :D
 
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#4 ·
The FastMan def looks nicer thats for sure, But it not like you can see it when its installed!

Not sure why anyone would buy the FastMan over Ryans if the performance is close to the same!

Ill take performance and price over performance and looks anyday!
 
#9 · (Edited)
Wow, I was not aware that you had a Fastman TB too Fabian. Thank you so much for conducting a unbiased, no-nonsense (albeit not exactly scientific) review of both TBs. While this isn't being done in a ISO 9001 certified lab, it doesn't get any better than this, folks!

A few statements, clarifications, and notes:

Naturally because I port stock castings (just like Dan Arcand bores stock castings too), my TBs and his are often compared. Frankly for me, such a comparison is flattering.

Dan does FANTASTIC work, and he's a real nice guy to boot. I've never bought anything off of him myself but I've sent other people his way for TBs and I've shot questions off of him a time or two.

There is a place for both TBs, the way I see it.

If you are looking for a show-quality piece, buy the Fastman. Or better yet, spend the 375 (or more) on the F&B/MHP/MM/Arrington throttle bodies, as those are well ahead of anything you can do to a stock casting.

If you are looking for a cheaper alternative that is not quite show-quality, but works more than well enough for most...you may want to consider talking to me.

Rob is correct in that I have no means, at this time anyways, of verifying the size of a TB inlet from one to another. I can verify the backside, thanks to templates that I have made. I am purchasing a tool that will allow me to make crude inlet measurements at least, to back up what I sense by touch and by sight. Because of the way I port the TBs (the 4.7 and 3.7's in particular), it's not as simple as just measuring the diameter, as it tapers to the blade size.

As far for the remarks that Fabian and some others have made about the finish, the more TBs I do, the more pieces I purchase to use at my disposal to decrease turnaround time, enhance the overall quality and finish, and to turn out a better product. I have some more equipment coming in this week. It should also be noted that I can do a finer (e.g. mirror) polish, but Irf either did not opt for it or we did not discuss it. Fabian and I discussed it and we concluded that he would try it basically as-is. 06Grand4.7 has a mirror-polished FRP TB and he is happy with it. I have offered (prior to this review being made) to mirror polish Fabian's 3.7 FRP TB for a minimal fee, should he decide he wants something more.

I'd be more than happy to submit a TB for an independent flow bench test. that would really be the most accurate way of determining where these ported/bored stock casting TBs stand. The results would be fascinating to say the least!

Thanks again Fabian...it would appear that the reviews continue to speak for themselves. :D
 
#15 · (Edited)
No problem. I figured some would be looking for my .02, and at any rate there were a few small things I wanted to clarify.

Not taking it as hating. While I would like to downplay your point, it doesn't change its validity.

I would not expect there to be a sizeable difference between the FM and FRP TB's at the track. However, an untuned vehicle will show a greater variance in times than a tuned vehicle (which likely has functions like the IAT turned off), which could potentially skew the results and subsequent conclusions made. My 4.7 tuned with SCT runs back to back 1/8 runs that are within .01 of a second or less.
 
#14 ·
not gonna lie...but I just dont see how the obvious imperfections in the FR TB wouldnt cause flow problems. Example....does air flow smoother and faster over a rough surface or a smooth surface? And maybe with a TB it doesnt matter? But I consider Ryan a valuable vendor and member. I just want to make that very clear!
 
#29 · (Edited)
not gonna lie...but I just dont see how the obvious imperfections in the FR TB wouldnt cause flow problems. Example....does air flow smoother and faster over a rough surface or a smooth surface? And maybe with a TB it doesnt matter? But I consider Ryan a valuable vendor and member. I just want to make that very clear!
I read an article about porting heads(cant remember where) and it said that you do NOT mirror polish the intake ports, just get them very smooth -200 grit IIRC. that creates a little turbulance (not sure if thats the right term here) along the surface that the rest of the air slips on (kinda like a bunch of pipes on the floor, you put a safe on them and you can push it with out the drag that you'd have directly on the floor)and the flow/velocity/cfm/ whatever goes up! Kinda like golfball dimples :D
I hope that came out right :)

edit: WoW just realized how old this thread was :eek:
 
#16 · (Edited)
Air behaves differently when it is being sucked in under vacuum as opposed to being forced upon the surface (i.e. in a boosted application). Because of this any imperfections there may be (regardless of how "obvious" or not they are), not all of the air hits the surface of said imperfection. Air travels to the area of least resistance....and the bottom line is that the area of least resistance is directly surrounding the perimeter of the blade. Air comes in through both the bottom and top of the blade as it opens further.

Granted, a disturbance near the surface could result in a disruption of flow elsewhere, but if it really mattered that much, the difference between stock and a TB with such imperfections would be marginal if not negligible. One should also question, on that note, if the imperfections are really enough to matter. In the world of street-driven vehicles where the last .1 horsepower is not being fought or worked for, they aren't. There are HUGE ridges/bumps in OEM inlets that would be greater disruptions to flow than any inconsistency my TBs leave my hands with. Yet nobody really cites them.........;)

For those of you who are wondering where I'm getting or what I am basing this info on, I'm finishing my Bachelors in Aeronautical Science in April, in which I've been educated on Aerodynamics. I'm no scientist but I would like to think I know a thing or two on how air acts.

Again, for the doubters/haters I am all for an independent flow bench test. Sign me up, I'll even supply the TB....
 
#18 ·
Nice write up Fabian. I've been saying for months the tb from FRP is a must and you will notice a difference. Glad your happy with it and enjoying it.
 
#21 ·
#22 ·
Damn add that to the list of MOD's and put right up top!!! LOL Nice write up Fabs!!!
 
#24 ·
"..... I think I lost a full sec. From 40 to 80, WOW! "

I find this statement a little hard to believe. Sounds a little too good to be true without a pair of track slips to back it up. Seat of the pants "dyno" claims tend to fade when but to the real test.
 
#28 ·
This review is old...and to some degree outdated. I have much better tooling now than I did at that time. So the finish etc is much finer. I usually put on a near mirror finish...Doesnt make a difference on flow but that seems to be what people want.

If absolutely necessary I CAN get the TBs bored (and then hand-port the inlet), but because I am unable to do the machining in-house it is not as cost effective as when I had someone working under me doing the boring. The example shown here is with a stock blade.

I dont think I can match Fastmans price for a bored TB, if you wanted a bored+ ported TB. I can probably come close though.
 
#32 ·
Im assuming because you're posting in this thread that you have a 3.7.

I only sold one BPTB (short for Beyond Ported...so bored and then hand ported for max flow and velocity) for the 3.7 . All of the other 05-06 3.7 TBs I have sold (about 10-15) have been simply taper ported. I would say there is a difference, however, not dramatic.

There was a few people with 4.7s that went from a taper ported TB to a BPTB, or bored TB that got ported, and saw further gains. Its nice to have, but not absolutely necessary.
 
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