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  #25  
Old 01-12-2010, 09:03 PM
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Re: TB ported and polished review!

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Originally Posted by Joe in PA View Post
"..... 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.
Funny that you mention DYNO! I was thinking the same thing when driving today. I can't believe how much faster my Jeep is now. I definitely got a hand full of extra ponies there. Where can I find a dyno in NY or NJ area?
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  #26  
Old 01-12-2010, 11:46 PM
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Re: TB ported and polished review!

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Originally Posted by Joe in PA View Post
"..... 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.
It probably is a bit of an exaggeration. But people are really seeing a difference from these ported throttle bodies, regardless of who is making them.

In the feedback that I have been getting from those who have purchased my TBs (which has been extremely positive), one thing that I am surprised about was the amount of people who said there was a noticeable difference at WOT. In my own experience, I saw the biggest difference at part throttle, especially in OD on the highway where my lifted WJ was a bit of a dog, below 2000 rpm/70ish mph.
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  #27  
Old 09-04-2011, 02:52 PM
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Re: TB ported and polished review!

Trying to decide between the two now. I saw FR isn't doing boring right now and using the stock blade/butterfly. Is this how it was when the comparison was done or should I go ahead and go with the Fastman?
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  #28  
Old 09-04-2011, 03:07 PM
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Re: TB ported and polished review!

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Originally Posted by praux View Post
Trying to decide between the two now. I saw FR isn't doing boring right now and using the stock blade/butterfly. Is this how it was when the comparison was done or should I go ahead and go with the Fastman?
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.
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  #29  
Old 09-04-2011, 03:36 PM
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Re: TB ported and polished review!

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Originally Posted by Scottina06 View Post
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
I hope that came out right

edit: WoW just realized how old this thread was
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  #30  
Old 09-04-2011, 04:21 PM
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Re: TB ported and polished review!

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Originally Posted by 4.whoa View Post
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
I hope that came out right

edit: WoW just realized how old this thread was
You are absolutely right. Its important though to note that there are deeper reasons for this to be done in cylinder heads than simply boundary layer issues.

This is more apparent on carbureted vehicles, but smooth intake ports tend to inihibit fuel pooling , because of the lack of tension/turbulence on the liquid mixture of fuel and air. To the best of my knowledge this can still happen in a fuel injected vehicle but this is dependent on where the fuel is actually injected. If I had a throttle body injected vehicle, I would likely leave the finish rougher than our port fuel injected trucks shown here.

Let me put it this way. When I get a order for a TB, unless specified otherwise, I do a near mirror (I typically sand or wetsand with either 600 or 1200 grit then buff) finish. Why is this? Because there is a myth in the performance/hot rodding world that shine=flow. Unfortunately they do not always correlate. Why do I do it then? Because people ask for it. To the point where its easier for me to do it by default, to keep all the TBs looking the same.

From all of my experience and research I have done, in these particular applications, the extra-fine finish on the throttle body does NOT hurt flow.

Now, if its one of my own personal TBs? I stop at maybe 320 grit (smooth to the touch), maybe 600 or 1200 grit. No buffing. Why? Because it just isnt necessary. The only thing it might aid is in carbon buildup....but thats what Catch Cans are for.

That polish makes for a negligible difference. Trust me, if I could get away with it and sell my TBs just with a smooth grit finish and not polished I would! Buffing/polishing is by far the most time consuming part of the process...Its not fun. Because I am stuck working on a given TB, trying to get it smooth and shiny, for 0 gains. I could spend an hour less per TB and still have the same great effects.
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  #31  
Old 09-05-2011, 02:57 AM
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Re: TB ported and polished review!

How much of a difference, if any, would I notice between a bored and non-bored TB? I'm not even worried about polishing though, no one but me will see it.
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  #32  
Old 09-05-2011, 07:45 AM
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Re: TB ported and polished review!

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Originally Posted by praux View Post
How much of a difference, if any, would I notice between a bored and non-bored TB? I'm not even worried about polishing though, no one but me will see it.
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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