SStrokerAce

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 66ImpalaLT1:
<strong> Do any of you grind down the throttle shaft?

I've seen this done on TPIS ported TB's.

Eric </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Eric,

Yes our new high flow units do have some modifications to the throttle shaft. It's sectioned and narrowed. Then the screws are counter sunk into the plate for a virtually flat top side, the back is narrowed and reshaped.

Bret

Fenris Ulf

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SStrokerAce:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Fenris Ulf:
<strong> I see a few things I would definately change on your throttlebody as well, but that is why TrahnZam and I port them ourselves. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Fenris,

The things I see will become apparent to you once you see the new hig flow porting. I should have the pics up soon. Compared to the old TB's the new ones are a new evolution. I have 2 months of them out there now on the road, and people seem to like them.

One thing I wish is that you guys worked more on the flow bench than on the polishing wheel. This is turning into more of a polishing contest then anything to do with performance. A surface finsh done with 180 grit flows the same as a polished one I have found on the flow bench. There's a point where the law of dinishing returns comes into effect on the surface finish and it's right around a 180 grit finish. At least what I have seen.

BTW, I have seen alot of guys "home ported" units and yours is by far the best one I have seen. There are a few more tricks you can do, but then you need some machinery to get it done.

Bret </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for the compliments bret, but those pictures are of only the first one I have done and that was about 8 months ago. I have access to an engine lathe and mill and have been using them on my latest creations, and I have been countersinking and testing out a new blade I fabbed up that should flow better than the stocker...

Its about time you started selling TBs with shaft work done <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

white2001s10

iTrader: (4)

Got it. Looks good, thanks <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

How come you guys are leaving both holes in the TB entrance epoxy? You only need the one for IAC and that can be much smaller too. Just wondering.
Is anyone putting larger butterflies in them yet?
<img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

SStrokerAce

iTrader: (2)

I've done a larger plate one, and it's not worht it. Might as well buy a BBK. Which is worthless anyways, it's hard to get a 80mm hole to line up with a 75.5mm one.

As for the 2 holes.

The IAC needs one, anything smaller and some problems will happen.

The PCV could do with out it yes, but since this is the only area with a vaccum or low pressure (that is controlled by engine demand too) it's a great place for the PCV to be. The C5 units don't have a IAC, but they don't seem to gain that much more flow on the bench.

Bret

white2001s10

iTrader: (4)

okay Bret, for discussion only <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

IMO the PCV hole & vacuum sounds like a good way to suck oil into the intake at WOT. If there's no vacuum & it's just filtered ventilation air, then why not just stick a filter straight on the valvecover and plug the TB hole?

On my TB the IAC hole is filled in except for a VERY small slit that should disrupt air flow. I enlarged the hole in the blade and it idles great.
It's just now the IAC has a little less control over the idle.... cold idle is a little lower & warm idle is a little higher which is perfect for me. Just reporting my results on that.
<img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Fenris Ulf

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by white2001s10:
<strong> Got it. Looks good, thanks <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

How come you guys are leaving both holes in the TB entrance epoxy? You only need the one for IAC and that can be much smaller too. Just wondering.
Is anyone putting larger butterflies in them yet?
<img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I don't know what cam you are running, but my car needs it <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> 240+ duration cams and small IAC holes are not a good combo <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

NX†C

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by white2001s10:
<strong> Fenris, could you please email me some pics of your TB or a link to the pics?
I'm just curious & since you can't post them here..
thanks
<img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Sent you an E-mail.

Fenris Ulf

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by ROB'S SS:
<strong> now im by far an expert on this, and have only ported one tb(and it wasnt even mine <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> ). remember your first ported tb? anyways, the word fluid came up 14 times, not including quotes. the part of the tb i hoged out didnt flow fluid, it flowed air. can someone enlighten me as to how air and fluid flows the same way? just wondering how you can directly compare the 2 in terms of surface prep.
p.s. not trying to sound like an *** </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes it did flow fluid. Air is a fluid, so is water etc. I think you are confusing liquids with fluids. By definition a fluid is any substance that fills a container and changes its shape when acted on by a shear stress.

ROB'S SS

i stand corrected. thank you

white2001s10

iTrader: (4)

Fenris, have you tried unplugging your IAC while the car is idling?
The big cam cars usually smooth out the idle once you do so because the IAC is moving anymore.
You can actually get a smoother idle without the IAC.

66ImpalaLT1

Bret did you post the pictures of the new TB?

Maybe I missed it.

Thanks,
Eric

ROB'S SS

now im by far an expert on this, and have only ported one tb(and it wasnt even mine <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> ). remember your first ported tb? anyways, the word fluid came up 14 times, not including quotes. the part of the tb i hoged out didnt flow fluid, it flowed air. can someone enlighten me as to how air and fluid flows the same way? just wondering how you can directly compare the 2 in terms of surface prep.
p.s. not trying to sound like an ***

white2001s10

iTrader: (4)

I hope I don't get executed for putting this link to a picture, but it's pure tech.
This is what the slit looks like that I'm talking about for the IAC feed...
a slit is very low cross section so has very minimal effect on airflow across it.
My idle is very nice and more even than before... hot and cold is closer to the same now and I like that. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
http://images.cardomain.com/installs...6_208_full.jpg

SStrokerAce

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by white2001s10:
<strong> okay Bret, for discussion only <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

IMO the PCV hole & vacuum sounds like a good way to suck oil into the intake at WOT. If there's no vacuum & it's just filtered ventilation air, then why not just stick a filter straight on the valvecover and plug the TB hole?

On my TB the IAC hole is filled in except for a VERY small slit that should disrupt air flow. I enlarged the hole in the blade and it idles great.
It's just now the IAC has a little less control over the idle.... cold idle is a little lower & warm idle is a little higher which is perfect for me. Just reporting my results on that.
<img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">O.k.

Is that a C5 TB, the pic looks like it doens't have anything on the right. It's either a really odd angle or TB is not a normal LS1 TB that I see everyday. The IAC works with that slit? That's really odd.

As for the PCV. You want a vaccum or low pressure area for the crankcase to vent to to help lower the pressure in the crankcase to help ring seal and power. You can do this with a crankcase evaq system kit, or if your the factory do it thru the TB and help emmissions. It rarely sucks any oil thru the PCV.

Interesting Pic though. I could offer the TB with a plugged PCV if someone wanted it. The C5 doesn't have one.

Bret

RAMBIRD2002

It seems to me that over all most of the above mentioned throttle body's look somewhat the same. The proof in the pudding will be flow #'s. Does anyone of our sponsor's have any cfm fact's??

white2001s10

iTrader: (4)

That one wasn't a LS1 TB, but a very similar 75mm model that comes on the new 4.3L V6 chevy trucks. Yep IAC is very happy.
As for the oil going into the LS1 intake, it comes from both sides. See all the oil that gets sucked into the #1 port? The rest collects on the intake floor. <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

<img src="http://images.cardomain.com/installs/217000-217999/217306_503_full.jpg" alt=" - " />

hondadream50

do you need to change the butterfly when you port a throttle body? Where do you buy a new butterfly at.. Want to port Ls1 throttle body..thanks

yellowbird

you boys are missing the boat,you really need to talk to scott over at JANTZER I ordered 1 of his tb,s,and he does a ausome job and what detailed work he does. take some time to look,and talk,you wont be let down--trust me!!!!

ChevyWeatherman

iTrader: (2)

I am sending my TB to Jantzer tomorrow..it's gonna be a perty fully polished one.

-Andy

WILWAXU

iTrader: (6)

Wow! resurrection!

Closing this one up.. to much code junk from the old board.

Start another post for your question.