ported throttle body

[ls1wallen]

I wanted to buy a ported throttle body. i just dont trust myself with a dremial. i have been looking around. there is a store on ebay jantzer performance and s2 performace. has anyone done anything with them before? and if not where did you get yours done at?

[SSTODD]

I sent mine to shaner for the S3 and have no issues, he is a great guy and an even better talker!:blah:

[redbird555]

I just did mine this past weekend and used a heavy stone to get the lip out of the TB. Then just used finer and finer things till it was smooth then polished it with a small wheel. I was on a budget for time it came out good and with the bump stop I noticed a little better throttle response. Besides if you start and get lazy youd be sending it in for a core anyway.:yum::coffee:
dan-

[01 T/A]

I sent mine to shaner for the S3 and have no issues, he is a great guy and an even better talker!:blah:

i have the same one from and ya he can talk alright :yup: i say get the s3 its a good buy

[creeper]

i just bought one used. ported mine while it was on then resold it for a profit. just picked up another one super cheap to port and will be selling my current one when i'm done.

[01 T/A]

mark at s2 fills the big gap in them and tuns them in a lathe. he also cuts the stop so you get a full 100% from the blade.

[kwade]

mark at s2 fills the big gap in them and tuns them in a lathe. he also cuts the stop so you get a full 100% from the blade.


How do I find where to send it to?

[Johns00Z28]

I sent mine to New Era performance and they sent it back in a couple days.

[zmg00camaross]

s3 ftw and mark shaner will talk your ear off great guy i could talk to him everyday.

[01 T/A]

How do I find where to send it to?
here is a link to his site. he is down in the dallas area
http://www.s2performance.net/
s3 ftw and mark shaner will talk your ear off great guy i could talk to him everyday.

i know it i see he got the head porting going now to. we talk for a long time on that and all i did was call to see how my tb was going. hahaha if its the guy he was telling me about that does them they may be a good deal.

[qwk93ta]

I sent mine to New Era performance and they sent it back in a couple days.

I did the same thing.....they did a nice job!

[Ryans99LS1]

i used the guy on ebay. great job and a hell of a guy to deal with.

[zmg00camaross]

here is a link to his site. he is down in the dallas area
http://www.s2performance.net/


i know it i see he got the head porting going now to. we talk for a long time on that and all i did was call to see how my tb was going. hahaha if its the guy he was telling me about that does them they may be a good deal.

was it that exclusive nascar guy, if so that would be badass, he talked about him and sounded crazy

[01 T/A]

was it that exclusive nascar guy, if so that would be badass, he talked about him and sounded crazy

i dont know if he did nascar stuff or not but the one he told me about did a lot of prostock stuff and the only guy the johnson guys use. warren and kurt johnson. last i talked to him he was going to use dart heads and p&p the hell out of them.

[01 T/A]

also he did a sale on the s3 last year for the holadays so he may do it this year. i got my s3 for $100 not the $125 or whats on the site.

[sutie]

were can i find info to port one myself?

[creeper]

http://www.ewurl.com/post/DIY-Porting-your-LS1LS6-Throttle-Body.aspx

http://www.gmhightechperformance.com/tech/0311htp_ls1_fbody_10_free_modifications/index.html

i just ported my second one, dremel makes it very easy

[sutie]

nice article, i think ill do that this week, any problems you have ran into? or recommended tools?

[creeper]

dremel and a few bits or some big metal files should be all you need. hacksaw if you decide to half-shaft it.

basically just a lot of patience. take the blade/shaft/sensors out so you just have the body. you'll be able to feel a lip around the entire inside edge, as you grind just keep feeling for when it's most of the way gone. you don't wanna go too too far but you can take a lot off. then make sure you clean it out very well so you don't suck any metal shavings into your engine. definitely worth the time, you'll notice a difference.

[sutie]

do you use any metal filler for the two air hole ports? or do you just leave those as is and bring anything else down?

[creeper]

personally, i don't epoxy that section. i've heard a few horror stories of the epoxy cracking and getting sucked into the engine. i've only heard of it happening a few times but for the extra 2hp i don't see the point in risking $3k in damage.

i bought a used ported throttle body to throw on while i ported mine and just in case i messed up, and when i got it the epoxy was cracking and i just didn't trust it. probably wouldn't have ever fallen off but i chiseled it out just to be safe.

basically just try to get rid of the lip, smooth the edges and curves as best you can, angle any flat edges a bit, anything that looks like it'll make the flow of air smoother.

[sutie]

sounds good, thanks man!

[Ryans99LS1]

its not so much the porting that makes the difference, its the bump stop mod that really gives you the HP bump. a lot of throttle bodies dont open near 100% so it makes a big difference because now your WOT reads 100% instead of say 87% like it used too.

[sutie]

yea, ive seen that done. how can you check using your TBPS to make sure its exactly at the right percentage/voltage? i read something about that and just need some clarification.

[Ryans99LS1]

im pretty sure its a certain voltage but im not sure on the number. check installuniversity

[sutie]

started doing it tonight...and my dremal broke.....planned on putting it on with the intake swap this weekend, we'll see if i can get my hands on another one.:cry2:

[redbird555]

When I did mine I just smoothed it out as best I could and just cleaned up the sharp edges on the side ports. To do the bump stop mod measure the voltage at the tps under wot at the blue wire. 4.71 will set the code I stopped at 4.68

[sutie]

wait, so you do the voltage check while the engine is running?

[RealLiveMD]

I have dyno proof that my ported stock throttle body from TR netted me 0hp.... so, don't waste your money.

[tatertot91]

wait, so you do the voltage check while the engine is running?
No you just have to have the ignition on, not the engine
That way you have power running through to get a reading from the sensor
You read it of the blue wire onthe Throttle positioning sensor

[Ryans99LS1]

I have dyno proof that my ported stock throttle body from TR netted me 0hp.... so, don't waste your money.

just ported? or did they do the bump stop mod too?

[creeper]

I have dyno proof that my ported stock throttle body from TR netted me 0hp.... so, don't waste your money.

how far apart were dyno runs made? different days or back to back? how many pulls with each?

porting it results mostly in throttle response, however there are dyno results showing gains. if you do it yourself it's free...so, it's not a waste.

[01 T/A]

this is more of a support mod but i would do it over for sure.

[RealLiveMD]

they do a razor blade edge and bump stop mod. If I knew as much as I know today. I would have done it myself within 20 min. As far as the dyno results, they were done on different days. however, i've had over 15 dynos. I really didn't see any dif. There was no dif with throttle response either. My lid added throttle response. My catback added hp I could feel. my gsd3s added obvious traction off the line. my headers added no low end torque, but sounded good and probably helped in the long run. Just my 2 cents.

[creeper]

hmm that's very interesting. i won't question your results, however i have seen a few graphs showing 2-8hp. that's probably on the higher side, but i would expect at least something. i noticed throttle response, not really power though.

[Ryans99LS1]

yeah we cant really question your results with it but maybe you already had a good throttle body to start out with. Ive read that some are a lot worse than others with the whole WOT thing, just means you had a better car to begin with hah.

[redbird555]

yeah we cant really question your results with it but maybe you already had a good throttle body to start out with. Ive read that some are a lot worse than others with the whole WOT thing, just means you had a better car to begin with hah.

I'll support that my buddys tb open all the way up to 4.5xx mine was only 4.25??:screwy:

[sutie]

deffinetly increased my throttle response, i think its getting stuck though, idles a little high wich i dont mind, but as soon as i put it in drive, foot still off the peddle, it starts to go on its own, idleing through second gear up to 1500 rpm's, kinda strange.

[karpetcm]

I did this mod, bump stop removed, ported and polished. I felt no difference at all even in throttle response. Im sure it might have given me some hp but without doing a before and after dyno comparison couldnt be sure.

[GatorSS]

I find it hard to believe that those who have appropriately ported & polished the throttle body, modified the bump stop, and smoothed the throttle blade have realized absolutely no performance increase whatsoever, not even in throttle response; unless there are some other underlying issues hindering it. Just my $0.02 worth.

[Johns00Z28]

I find it hard to believe that those who have appropriately ported & polished the throttle body, modified the bump stop, and smoothed the throttle blade have realized absolutely no performance increase whatsoever, not even in throttle response; unless there are some other underlying issues hindering it. Just my $0.02 worth.

Which is why I sent mine out to be done professionally.

[GatorSS]

Which is why I sent mine out to be done professionally.

Wise decision, John. I'm a firm believer in doing the things you can do very well yourself, those at which you are inexperienced or are still "surfing the learning curve" so-to-speak, let a pro handle it (and watch him carefully while he does it if he will let you). Best wishes on it.

[qwk93ta]

Which is why I sent mine out to be done professionally.

I did the same....and I feel it was worth the $80 I spent.

[SSTODD]

:right: And a good scan tool will also show you 100% throttle position if you don't want to try the voltage method to verify.

[GatorSS]

I did the same....and I feel it was worth the $80 I spent.

Excellent point, too. I'm pretty good with a Dremel and various epoxies working on hobbies from time to time, but it would take me at least 2 hours to do one (probably more like 3 to 4) reasonably well, but I could take that same 2 hours working in my profession and make a minimum of $300. So, if I could get a pro to do it for $80 (and do a better job than I), hey, that's a slam dunk decision! Yes, definitely well worth that $80!

[RealLiveMD]

This topic is becoming beat to death. Hell, i wish I had realized a few more ponies... but I didn't. Overall, the bump stop mod is free, so do it. You can always put in a screw if you mess it up. The blade on mine looks cool and smooth; but..useless. Anyway. feel free to buy parts and try them yourself. I've tried everything except an underdrive pulley. Primarily, I heard that they add a couple of horses but some have problems with their electrical devices. So, I stayed away.

[ss~zoso~ss]

I find it hard to believe that those who have appropriately ported & polished the throttle body, modified the bump stop, and smoothed the throttle blade have realized absolutely no performance increase whatsoever, not even in throttle response; unless there are some other underlying issues hindering it. Just my $0.02 worth.

THIS. is what I have experienced, felt no difference at all, done by SHANER too, he did a great job, just couldnt really notice the difference.

did the TB along with tune by Frost, both were installed before the car came back on teh road tho from the winter, possibly why i couldnt notice the difference

because i hadnt driven it in like 7 months.

idk

[tep98ws6]

did anyone flow their ported TBs? i just did mine tonight ... i started with 575 and went to 606 after i ported ... i havn't dynoed yet though.

i was pretty stoked on how good my port job was since i never have done it before :D

[Y2KPewterSS]

did anyone flow their ported TBs? i just did mine tonight ... i started with 575 and went to 606 after i ported ... i havn't dynoed yet though.

i was pretty stoked on how good my port job was since i never have done it before :D

Nice improvement, did you do the porting yourself?

[tep98ws6]

Nice improvement, did you do the porting yourself?

i did! i was so excited since i've never ported anything before. there's like nothing left of it, hah ... i knife edged everything and rounded off everything. im happy with it. i have really awesome throttle response now

[Y2KPewterSS]

i did! i was so excited since i've never ported anything before. there's like nothing left of it, hah ... i knife edged everything and rounded off everything. im happy with it. i have really awesome throttle response now

Thats awesome, congrats. Did you do anything to the bumpstop?

[tep98ws6]

Thats awesome, congrats. Did you do anything to the bumpstop?

... i don't think so? should i have?

[Y2KPewterSS]

... i don't think so? should i have?

Its not a must, here is an article you might want to look at and play around with.



http://www.installuniversity.com/install_university/installu_pages/sophomore_year/tb_bump_stop.htm

[tep98ws6]

Its not a must, here is an article you might want to look at and play around with.



http://www.installuniversity.com/install_university/installu_pages/sophomore_year/tb_bump_stop.htm

NICE! definitely didn't know about that. i will have to do that

[redbird555]

Btw you dont need a scan tool to do the bump stop. Just put a volt meter into the wires on the tps and manually open the tb to WOT you should get a reading of 4.2xxx to start then file down get as close as u can to 4.7 without going over.

[mjr_350]

I did mine last week with port, knife edge and bump stop.
I went way over to around 7.8v and installed a M6 grub screw and locking nut.
Gives a degree of adjustment right on the boarder of engine light on.

I finally put it on tonight and there's definitely sharper throttle response.
But that might have to do with me painting it red while it was apart (red goes faster)

[karpetcm]

^^^LOL

[01 T/A]

I did mine last week with port, knife edge and bump stop.
I went way over to around 7.8v and installed a M6 grub screw and locking nut.
Gives a degree of adjustment right on the boarder of engine light on.

I finally put it on tonight and there's definitely sharper throttle response.
But that might have to do with me painting it red while it was apart (red goes faster)

this is tru:haha: