Not a bad price with shipping. Actual labor cost then seems on par with IPS. He told me most TB's (they are a GM mostly company) like the huge corvette TB's are at like $65-70 each. So $140 plus shipping for us I'd guess.

Exactly, because it's two of them.. twice the work and twice the materials (includes new butterflies and stuff).

still kinda sexy and 414whp N/A is impressive lol

Wait so $140 for IPS with knife edge and PnP, his are $179 PnP but its PnP'd all the way through with a new BF. That's a good cost. Will $39 equal more power, hmmm?

Not bad for 200$
I strongly suggest to do more than just boring those TB ;)

he has another option for those TB which is TB Shaft machining. $35 each.
since you can have quite a bit more flow doing this.

its kind of odd he doesn't have a knife edged butterfly plate though...


This is what I used for the pass few years :)
http://www.the370z.com/members/megan...ure42412-a.jpg

True. Z1's made mistakes too. They've sent out manis with holes in them filled with resin to patch it up.

In your opinion, as you have experience with bored throttle bodies, will I have any tuning/idle problems if I go this way?

you will need to adjust the idle screw which look to be locktighted very strongly btw.

then if you know what you are doing with the tune. you wont have any problem



again,
I prefer to mention it often, you need a different intake setup other than OEM because you MUST have a bigger intake tube especialy the MAF tube. if you arent doing it right , boring a TB to his maximun as I did , you wont get much of any gain
this is boring 2.5mm out , cut the shaft in half , flush screws , arrow edged butterfly plate.

edit again ,,, if you dont have a very good flowing exhaust ... forget about this mod ! ,,

Can you run without a tune?
No, I don't want max power. Just will it run ok without having weird idle issues and such?

if you still have the stock airbox, yes you could run without a tune, but I dont recommand it at all !

but any bored out TB , you will probably have to adjust that idle screw.
I had in my case, it didnt let the engine run lower than 1200rpm

I have G3s.
And forgive my noob-ness to this topic, but idle screw? I thought idle and such was ONLY controlled by the ECU on these newfangled cars with their computers and all?

the screw is set at factory and loctited there very hard with a jam nut

then yeah you can set the idle tru the ECU.

but having it bored out, you have more air comming thru the plate because the butterfly still close at the same angle but its now bigger.
it doesnt take much to affect the idle air flow speed..


look at this picture , the jam nut on the idle screw is located on the bottom left and right of the TB.
http://www.ppi-mines.com/images/R35_...ttle_a1000.jpg

hope thats help to understand ;)

Where's the coolant lines?

So, I'm assuming you just adjust the idle screw until your idle is the same as it is set in uprev?

i wonder if my current intake/exhaust set-up meets the requirements you mentioned for actual gains from a TB bore.....hmmm lol

i know my intakes are larger than stock and i believe larger than G3's so i should be good.

I think you'll see a gain no matter what you have. But like a tune the biggest gain will be if you do it vs not do it and you just put parts on. Better the setup the better the gain.

well a tune would be done no matter what.

oooh this thread is interesting... totally sub'd

Thought I'd get some befores going :)

Lots need done. And clearly the last two owners did not have a catch can like me. These things have oil and black tar build up galore! Hell just cleaning might net a horse power or two haha.

This is everything on just one side.

http://i39.photobucket.com/albums/e1...ps7ec7d5e4.jpg

http://i39.photobucket.com/albums/e1...ps8fd40e3e.jpg


http://i39.photobucket.com/albums/e1...ps2a58e364.jpg

http://i39.photobucket.com/albums/e1...psc5f8be48.jpg

http://i39.photobucket.com/albums/e1...psb1793e51.jpg

http://i39.photobucket.com/albums/e1...pse5b99f66.jpg

good stuff :tup:

this make me remember of the same projects over 1-3 years ago
I just looked at the picture I had about smoothing up the edge in Nov 2011 and porting in Dec 2012
damn time goes fast as we get older :icon14:

it seem like you are now the guy (not a shop) who will dyno test different part on the VHR engine ! I mentioned it before there is still quite a bit to be gained on the N/A side with the stock engine.
Keep up the result coming !
I might switch those VVEL heads back ! lol....



edit; btw just a headup,, on the first picture , look inside and to the left, I remember I made it smoother going to the front intake runner... there is quite a bit of plastic that can be removed,,,, it wont hurt ;)

on the 4-5-6th pictures, that small bump close to the inlet can be grined down almost flat but not to much (90% flat)
like this http://www.the370z.com/members/megan...uch-better.jpg

Nice! I'll tell him.

New gaskets?
 

Does the gaskets need to be replace when doing this job?

TB to mani and mani to lower no. They're rubber. Lower to head yes. I would as I'm sure they're crushed steel ones.

^^^

+1

Any updates with this?

Btw, what happened to AZ? He was all hyping the 370Z community promising new parts?

I have everything now. Just fixing my car from a wreck and ill head over to IPS.

He wouldn't give prices without doing the work. I'm not rich. I can't just send 4 parts and then he says it was 100 hours you owe me $10,000. IPS told me cost up front since they do TB's and lower manis all the time.

Update.

Everything is at IPS for porting. They're a little busy so porting should start next week. Then we'll figure out dyno time and go from there.

In for results -- good luck :tup:

Will you have a clear baseline as well as dynos on sucessive changes?

BTW: keep in mind you usually need to see 3 runs before the various trims arrive at the target map values; by the 4th or 5th, you tend to see diminishing returns as everything heats up.

Subbed

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We'll have what I have now. Then parts getting added one at a time showing a difference then tune that part. Then add a new part but go back to the stock map. Then tune the newest part and so one.

Interested..

They gave u a price yet?

Well its $30 a hour. A lower aluminium mani off a 3000gt (also a v6 just like ours) was said to be about 3hrs for porting. So Z1 plus your OEM mani = $295. Possible price on ours = $90. But it might be more or less since its plastic. Easier to cut but more care so you don't blow through the sides. The lower should be $90 (like the 3000gt) and TB's are $65-70 each I'm told. So total $310-$320 for all 4 ported.

If you don't give them yours expect a way higher price since you'll be buying the porting and the parts. I'd guess $100+ a TB and $200+ for each mani?

in for the progress!!!

Parts are done. Picking up today.

cant wait to see them. Curious to see what it puts down.

we want pictures or it didn't happen !! ;)

Sweet!

Looking forward to pics, and especially dyno results! :tup:

Ok well I'm going to start out saying I'm not going to say anything. Lot of emotions going on right now about a few things so discuss as you will. I'm going to keep quite till dynoing. Might even do some more myself before then.

http://i39.photobucket.com/albums/e1...psc08417f6.jpg

http://i39.photobucket.com/albums/e1...psa6b016db.jpg

http://i39.photobucket.com/albums/e1...ps9acb511a.jpg

http://i39.photobucket.com/albums/e1...ps11072f87.jpg

http://i39.photobucket.com/albums/e1...ps49834ac7.jpg

http://i39.photobucket.com/albums/e1...pse881b1ed.jpg

http://i39.photobucket.com/albums/e1...ps5f5cd1ea.jpg

http://i39.photobucket.com/albums/e1...ps66501ef9.jpg

http://i39.photobucket.com/albums/e1...psff3152cb.jpg

http://i39.photobucket.com/albums/e1...ps9145f737.jpg

http://i39.photobucket.com/albums/e1...ps039652d5.jpg

Throttle bodies look sweet! Can't wait to see what it does

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