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3400 throttle body dimensions

 
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k6ng6r00
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PostPosted: Tue May 08, 2012 2:00 pm    Post subject:  3400 throttle body dimensions Reply with quote

I want to design a custom throttle body for my sc3400 build in solidworks and bring the file and a block of aluminum to a local machine shop that has proved to be very generous. Where can i get the dimensions of the plenum bolt holes and whatnot? I was thinking i would design a plate and the housing and reuse the axle and cable mounting bracket. so i would need the dimensions for the iac valve and all stuff too. Yes i have calipers but I don't feel want to pull mine off and risk the gasket disintegrating if i dont have to.

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IffyG
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PostPosted: Tue May 08, 2012 2:36 pm    Post subject:   Reply with quote

How do you expect someone to build a custom throttle body without a template to work from? I'm gonna hazard a guess and say they aren't gonna get it even close to correct without having a template on hand...

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k6ng6r00
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PostPosted: Tue May 08, 2012 2:54 pm    Post subject:   Reply with quote

IffyG wrote:
How do you expect someone to build a custom throttle body without a template to work from? I'm gonna hazard a guess and say they aren't gonna get it even close to correct without having a template on hand...

Sounds like you have never used solidworks or a cnc mill...
The template is the solidworks file i would draw, which i need the dimensions for... i guess the only way to do it would be take one apart with a calipers. Unless there is a website or a database somewhere that would have it...

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IffyG
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PostPosted: Tue May 08, 2012 2:58 pm    Post subject:   Reply with quote

I haven't, but it doesn't take a rocket scientist to figure out a cobbled together set of measurements isn't going to produce the same results as giving the machinist a template to start from...

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k6ng6r00
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PostPosted: Tue May 08, 2012 3:12 pm    Post subject:   Reply with quote

It just has to bolt up to the plenum its not like we are talking about a precision instrument that needs a thousandth of an inch tolerance...

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IffyG
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PostPosted: Tue May 08, 2012 3:30 pm    Post subject:   Reply with quote

Let me rephrase it another way... for as much as you will be paying for a custom part, take your throttle body off and measure it yourself. Sure you might need a new gasket, but it's a lot cheaper than trusting someone else to do the measuring for you...

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k6ng6r00
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PostPosted: Tue May 08, 2012 3:40 pm    Post subject:   Reply with quote

IffyG wrote:
Let me rephrase it another way... for as much as you will be paying for a custom part, take your throttle body off and measure it yourself. Sure you might need a new gasket, but it's a lot cheaper than trusting someone else to do the measuring for you...

I guess i can wait until i get my hands on a set of ported manifolds and just measure where the bolts need to be...
If i was planning on spending money i would just buy one from WOT-TECH, but i can just use the machine shop at school myself if nobody in the local shop wants to turn on the cnc machine for a 6 pack... the solidworks design should take me less than a day... the material should be easy enough to acquire....

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PostPosted: Tue May 08, 2012 6:36 pm    Post subject:   Reply with quote

While this sounds like a cool project, you are greatly underestimating the job..

What are you going to do for the butterfly?
What about the spring loaded mechanism?
How are you going to mount the bar the butterfly attaches to?
Are you going to press in bushing or bearings for the bar to ride on?
How are you going to seal the mechanism against vacuum leaks?
What about the TPS, the IAC, etc, etc?

Are you going to model the flow? A larger opening with interrupted flow is worse than factory...

BBEngineer

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k6ng6r00
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PostPosted: Wed May 09, 2012 9:09 am    Post subject:   Reply with quote

bbengineer wrote:
While this sounds like a cool project, you are greatly underestimating the job..

What are you going to do for the butterfly?
What about the spring loaded mechanism?
How are you going to mount the bar the butterfly attaches to?
Are you going to press in bushing or bearings for the bar to ride on?
How are you going to seal the mechanism against vacuum leaks?
What about the TPS, the IAC, etc, etc?

Are you going to model the flow? A larger opening with interrupted flow is worse than factory...

BBEngineer

Well the butterfly would be easy, thats just another part file...
The spring loaded mechanism with the cable bracket i was thinking would be able to just use the existing one and make sure i place the bolt holes in the right spots...
If i can rebuild a vortech supercharger i can press a couple bearings into a tb...
I think you mean boost leaks!
TPS IAC etc would be retained... just more stuff to measure... are the bores for them complicated i was assuming they would be just circular or close to it?

I have a lab for modeling the flow of plastic through a steel mold for an injection molder, i don't see why it shouldn't work for air through a throttle body for a car

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