throttle bodys s90 vs 1g tb vs non turbo tb

[jpmxrider489]

My goals have changed since I got a new daily driver. 600awhp is a huge goal but im doing everything I can. Over the winter im doing my motor. But the main question is what tb should I use. I have a race manifold ready to order but what flange should i get. I already have a very nice 1g that was rebuilt and powdercoated. Will that get me there or will it hurt. I believe the 1g nt and 1g turbo is the same mm correct? I know everyone like the s90 but is it worth it. I already have 160 in my 1g tb. Should I use that or save and buy the s90?

 

[syndr0me]

I was wondering the same thing to when looking at manifolds yesterday, is it actually worth the extra money?

 

[jpmxrider489]

Im hoping snowboarder714 will chime in soon. I have money wrapped up in this 1g tb im hoping it will be able to handle 400.

 

[snowborder714]

Tim Zimmer has a dyno chart in his profile that reads 835whp. His pictures show a 1g turbo throttle body. That's enough convincing for me

I would say 400whp shouldn't be a problem for it. I'd be interested to see how the seals hold up to a 600whp car. I'm not sure what the highest hp vehicle one we've rebuilt has been put on.

 

[jpmxrider489]

So should I upgrade to the s90 or push the 1g tb that was rebuilt?

 

[burkgonzo]

I think way too many people pull an overkill on throttle bodies and intake manifolds.

 

[snowborder714]

If you're shooting for 400whp, then you won't be pushing the 1g throttle body's limits. Use it.

I'm all for keeping it and using it. If you really want, you can have the intake manifold flanged for something bigger and then just use a reducer flange and run the 1g. But to me that just ads more leaking areas.

I don't think there are too many people on here who will take advantage of a larger throttle body. Have you happened to do some calculations to see what size intercooler piping would be appropriate for your application? I'm guessing it'll match up very closely, if not be smaller, than a 1g throttle body bore.

 

[jpmxrider489]

Will the 1g tb be able to handle 600?

 

[snowborder714]

If you see the first comment I made in this thread, you'll see that a 1g throttle body can support 600+whp.

If you do hit 600whp with the one we rebuilt for you and start to experience issues, I'd be interested to hear what goes wrong and can work with you to help resolve the issues.

 

[jpmxrider489]

Ok thanks alot. I will post up updates and let everyone know.

 

[dsmusmc]

Like said the 1G TB will work fine but with that HP level wouldn't hurt to have the bigger opening. Good thing about the s90 if you feel like the stock TB isn't doing it for you the s90 is the same bolt pattern.

 

[Boostinsideways]

I myself never understood why so many street builds these days have smims, or huge throttle bodies, it reduces lowend so much for so very little gain in a >500 hp build.

 

[jpmxrider489]

So your saying the s90 and 1g have the same bolt pattern? The hole is just different? So I can get it flanged for the s90 and just bolt on my 1g untill I upgrade?

 

[dsmusmc]

So your saying the s90 and 1g have the same bolt pattern? The hole is just different? So I can get it flanged for the s90 and just bolt on my 1g untill I upgrade?

They both have the same bolt pattern. If you have the 1G TB and spent the money for a rebuild I say run it unless you really feel like spending more money. If you feel the need to go bigger the s90 will bolt right up but may or may not need to open the inlet just a tad. Beats paying to have it reflanged.

 

[jpmxrider489]

So ive been having a nightmare about throttle bodys. (snowborder knows). But now that I upgraded my fmic ive been having fitment issues. Im wanting to get rid of the elbow. So the s90 and the nt tb uses a coupler. So I have a few questions. My smim is flanged for the s90.

1 Since the hole on the smim is bigger than the tb would that be causing a boost leak ive been having?

2 How would the seals on a nt tb hold to all the boost for my 600hp build?

3 Whats a fair price for a nt tb?

Condisering the s90 is 250 shipped for me, Im pretty sure I can get the nt tb and have it rebuilt for the price of the s90. What are your guys thaughts?

 

[1SLOW93TURBO]

I made 775awhp through a stock 1g throttle body @ 40 psi on a PT72 using a smim. I am going to run a NT 1g TB on my current setup and shoot for 800+. I agree with previous statements that a stock intake and TB can more then support majority of us DSMers.

 

[tkelly27]

As mentioned, the S90 has the same size flange as the stock throttle body, so there should be no boost leak issues with that.

If a 70mm TB and a 60mm TB are going to cost you the same amount, and your manifold is sized for the 70mm, go with the 70mm. If the 60mm is going to cost much less, use that instead.

Because the throttle is in blow through (turbo pushes through it) it doesn't have to move the CFM (cubic feet per minute) that something like a big V8 would. As mentioned Twicks (and now 1SLOW) makes 800+ hp with a 1G TB. It's most likely bored out a few mm, but still.

Stop worrying about it and pick one.

 

[jpmxrider489]

Are we talking about the NT throtle body or the 1g turbo tb? So the seals on a NT tb could handle the boost of our cars? As far as the fiav, tps, isc would bolt right up? So whats a fair price for the NT throttle body?

 

[snowborder714]

2. Should hold just fine. You could even consider installing the mil.spec seals which are supposedly better. I haven't had the opportunity to test fit on an N/T yet (they're 1mm shorter than turbo seals) and since they're metal cased like the OEM ones were, I don't know if they'll squish enough.

3. Rebuilt? I'd say you'd be looking at $160 or so, depends on if sensors are included, how much work was done, etc.

The 1g throttle body will easily support your hp goals for sure.


All 1g/2g (sans '90) FIAV's and ISC's are the same. The 2g TPS will bolt on to a 1g.

 

[jpmxrider489]

2. Should hold just fine. You could even consider installing the mil.spec seals which are supposedly better. I haven't had the opportunity to test fit on an N/T yet (they're 1mm shorter than turbo seals) and since they're metal cased like the OEM ones were, I don't know if they'll squish enough.

3. Rebuilt? I'd say you'd be looking at $160 or so, depends on if sensors are included, how much work was done, etc.

The 1g throttle body will easily support your hp goals for sure.


All 1g/2g (sans '90) FIAV's and ISC's are the same. The 2g TPS will bolt on to a 1g.

Brian, do you have any 1g nt throttle bodys? Have you rebuilt one before?


What about his half shaft mod, is it worth it?

 

[snowborder714]

PM me for availability.

I have rebuilt plenty before. I have never tried one with the mil.spec seals though. I only have used the ones you can get from Mach V or ExtremePsi.

If you want the half shaft mod, Steve from throttlebodys.com is the only person who does that (same with boring). I've never looked into it, what it's good for, etc. as it just seems unnecessary to me. I figure if it was such a great thing, more people would be running it and raving about it.

 

[jpmxrider489]

PM me for availability.

I have rebuilt plenty before. I have never tried one with the mil.spec seals though. I only have used the ones you can get from Mach V or ExtremePsi.

If you want the half shaft mod, Steve from throttlebodys.com is the only person who does that (same with boring). I've never looked into it, what it's good for, etc. as it just seems unnecessary to me. I figure if it was such a great thing, more people would be running it and raving about it.

You have a very good point. I just want a reliable tb. So do you have the seals in stock as well?

Im curious and excited to get this throttle body on the dyno and see how it holds up.

 

[007jimmy]

im using a non turbo TB off a galant or hyndia i beleive.. i forgot what car i pulled it off of but its slightly bigger then stock and i bored out my stock intake to match. it doesnt have the elbow but i did rebuild it using extremepsi turbo seals. i bought 2 complete gasket sets because i pulled 2 different tb unsure of what one i was gonna use.

 

[JwpRider]

My personal opinion on the Half-shaft mod is 'not worth the risk', and costs more! This trend started with the Buick Grand Nationals, as a way to increase air flow. With this mod, they cut away one half of the throttle plate mounting shaft. (The part of the shaft with the slot that holds the throttle plate). So, instead of your plate being 'bewteen' the two parts of the shaft, they cut away one side, and your plate is screwed into the remaining side/slot. The idea being, at WOT there is less material 'in the way of the air moving into your intake'. I rather have my throttle plate securely mounted and not worry about it flexing, moving or binding. (Or falling off and going WOT!!!) There are cases where the shaft broke under high boost (racing). Not all TB are built the same, so what works on a Q45 may not be wise on a Mustang or 1G TB. Again, I don't know if this "mod" has been proven with testing or not...I wouldn't do it...just my two cents...

 

[jpmxrider489]

Im not going to do the half shaft mod. It doesn't seem worth the risk. I'm going to look more into the nt tb. Does the nt tb have the vacume ports. All I care about is like the p port for my boost gauge.