Help/Input: Custom Intake manifold, what Throttle Body?? - Miata Turbo Forum - Boost cars, acquire cats.

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Old 03-23-2014, 10:18 PM   #1
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Default Help/Input: Custom Intake manifold, what Throttle Body??

Hello,

I am having a custom intake manifold made up for my FE3. I will be running MS and it will be turbo'd. I am curious what people choose to run as a TB when going custom.

I have 4 diff TB's currently to choose from but looking for ideas.

Info:
Wanting to run 280+Whp
IC piping is 2.5"
Turbo is T3/4 50 Trim

Current TB's are:
90 1.6
05 MSM 1.8
90 MX6 2.2T (F2T) TB
95? Q45 90MM TB (3.5")

Thanks,

Brandon
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Old 03-23-2014, 10:22 PM   #2
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Out of those, I guess the MSM.

The F2T has two butterflies and is annoying. Q45 is probably a bit big.

Why not a Mustang 70mm or something? Custom manifold means you can use a nice throttle body.
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Old 03-23-2014, 10:45 PM   #3
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Why not a Mustang 70mm or something? Custom manifold means you can use a nice throttle body.
Yes that is what I am wondering, what are the "nice" TB's.
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Old 03-23-2014, 11:08 PM   #4
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what about Mustang TB's ?
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Old 03-24-2014, 09:49 AM   #5
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Maybe some throttle body in the 65mm range that doesnt have throttle shaft breakage issues.
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Old 03-24-2014, 10:25 AM   #6
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Quote:
Originally Posted by concealer404 View Post
Why not a Mustang 70mm or something?
because most aren't designed to be used with a throttle cable and there's no preload in the clockspring and you're left with an incredible sensesitve limp dick throttle that can stick open if you don't add addtional pre-load to it?
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Old 03-24-2014, 10:44 AM   #7
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why not go with a honda style throttle body. They are relatively cheap can be had in sizes up to around 90mm and you can have a IAC on the bottom of the throttle body if you have a way to control it. I personally have an ebay 90mm I would not suggest using one of these. lol
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Old 03-24-2014, 10:52 AM   #8
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Quote:
Originally Posted by Braineack View Post
because most aren't designed to be used with a throttle cable and there's no preload in the clockspring and you're left with an incredible sensesitve limp dick throttle that can stick open if you don't add addtional pre-load to it?

Hrm i wasn't aware.... I know of at least one MX6 guy that used an aftermarket Trickflow Mustang TB without issues, but never really paid attention to the linkage.

Something i should research it seems... i was planning on using one on my 93.
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Old 03-24-2014, 10:55 AM   #9
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Quote:
Originally Posted by Sean View Post
why not go with a honda style throttle body. They are relatively cheap can be had in sizes up to around 90mm and you can have a IAC on the bottom of the throttle body if you have a way to control it. I personally have an ebay 90mm I would not suggest using one of these. lol
what size is the MSM TB?

an ITR TB would be a good one.


You also need to factor in the ease of adding a TPS and Idle Valve to the mix.
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Old 03-24-2014, 11:23 AM   #10
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Old 03-24-2014, 11:30 AM   #11
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hey look at that.

I'd go for the 99+ verison so your idle valve doesn't need it's own air source off the charge pipes to make for easier installation.
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Old 03-27-2014, 05:59 AM   #12
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Which TB are you referring to?
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Old 03-27-2014, 05:59 AM   #13
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Quote:
Originally Posted by Braineack View Post
hey look at that.

I'd go for the 99+ verison so your idle valve doesn't need it's own air source off the charge pipes to make for easier installation.
Are 99+ and an 05 msm TB the same?
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Old 03-27-2014, 06:12 AM   #14
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Quote:
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Which TB are you referring to?
My whole post was in fact a link to the exact TB I was referring to. That's why it was underlined and clickable and all
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Old 03-28-2014, 09:17 AM   #15
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Quote:
Originally Posted by Braineack View Post
I'd go for the 99+ verison so your idle valve doesn't need it's own air source off the charge pipes to make for easier installation.

Do this @FE3tmx5

Cant wait to finish it so you can get it running again and bring it down for me to hear.
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Old 03-28-2014, 09:19 AM   #16
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Quote:
Originally Posted by Braineack View Post
hey look at that.

I'd go for the 99+ verison so your idle valve doesn't need it's own air source off the charge pipes to make for easier installation.
a picture comparing the two was posted recently:

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Old 03-29-2014, 01:32 PM   #17
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Quote:
Originally Posted by Braineack View Post
a picture comparing the two was posted recently:

Would any issues arrise if I didn't run coolant lines to the TB?

Thanks for the pic.
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Old 03-29-2014, 07:53 PM   #18
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Your throttle body could freeze if you decide to drive in Northern Canada in -40* weather.
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