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Author Topic: butterfly position and induction length with itbs.  (Read 304 times)

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Offline Tristan

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butterfly position and induction length with itbs.
« on: December 13, 2014, 12:23:46 am »
I'm  curious as to what difference you get with response and torque , when you compare say DTH bodies with long trumpets , to a long runner manifold with the TBs/carbs perched out away from the head?  ???
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Offline JMR

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Re: butterfly position and induction length with itbs.
« Reply #1 on: December 15, 2014, 09:14:01 am »
That's a good question and oddly enough one I was thinking about a couple of days ago. At some point I'll get a long JMR manifold and do a back to back on the dyno.
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Offline Tristan

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Re: butterfly position and induction length with itbs.
« Reply #2 on: December 15, 2014, 11:33:44 pm »
I get these random thoughts.... just to give you something to do! lol

I imagine it affects carbs more than T/bs? having carbs close to the head would hurt air fuel mixing?
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Offline JMR

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Re: butterfly position and induction length with itbs.
« Reply #3 on: December 16, 2014, 10:24:55 pm »
No it could work with a throttle body too as the injector position will move as well with it being mounted in the body. Could be an interesting test.
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Offline Tristan

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Re: butterfly position and induction length with itbs.
« Reply #4 on: December 24, 2014, 01:19:11 am »
if only we had more room in front of the 16v engine in a mk1....
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Offline Tim Moll

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Re: butterfly position and induction length with itbs.
« Reply #5 on: December 24, 2014, 09:29:06 am »
Tris you can do if you get a rad like I have for my race car to work with the xflow 8v head  ;D
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Offline Tristan

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Re: butterfly position and induction length with itbs.
« Reply #6 on: December 25, 2014, 12:42:33 pm »
Oh I shall!
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Offline Tim Moll

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Re: butterfly position and induction length with itbs.
« Reply #7 on: December 26, 2014, 12:08:45 pm »
Quote from: Tristan on December 25, 2014, 12:42:33 pm
Oh I shall!

Let me know if you need any details mate  :)
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Offline Tristan

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Re: butterfly position and induction length with itbs.
« Reply #8 on: December 26, 2014, 02:41:52 pm »
I'd appreciate that Tim . I have been perving on your mk1 thread tbh , only on the 3rd page yet!
I might post my build here , even though it's just an ordinary ish road car.
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Offline JMR

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Re: butterfly position and induction length with itbs.
« Reply #9 on: January 01, 2015, 12:36:46 pm »
There's nothing ordinary about an enthusiasts project. .road or race...post away!  8)
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