|
I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
|
Wow, what great dialogue. It seems I missed a bunch yesterday. Amazing that you miss when you stay home sick and sleep off a cold all day.
Everyone here has valid points. I am not an engine builder or engineer so all this is very helpful. I agree that these may end up being too small for my 3.2. Right now, I plan to get them working on my internal stock 3.0 to set the proof of concept.
Richard, I think that a truly track engine will require larger intakes for the fuel system. Its no surprise to me that your mechanic specs bigger TBs on his race engines. I assume these engines have lots of port work too.
John, You bring up some valid points. Sounds like the Cone shape will be best and that having the TB close to the head as the limiting point on the diameter may end up in my design. It might make fabrication easier too. btw, I tried to find your old posts with the spread sheets for calculating HP from intake speed and volume. I have had no luck. Can you email me those formulas?
Aaron, The intake velocity will be:
v = volumetric flow(cm^3/min)/cross sectional area of flow(cm^2)
Yesterday, I thought about fabrication. There will be less work to space the TBs and connect them in sequence. The linkage will be easier to setup if I mount these to the weber manifolds. The downside is that I will have to make mounts to hook up with the ball/socket arrangement. A cable operated setup may be better and easier to attach with the current config on the TBs.
Mounting them directly to the heads will be more difficult, especially since I no longer have access to a mill or lathe after changing jobs a few months ago.
This is great fun. Keep up the suggestions. Everything is being considered.
__________________
Jamie - I can explain it to you. But I can not understand it for you.
71 911T SWT - Sun and Fun Mobile
72 911T project car. "Minne" - A tangy version of tangerine #projectminne
classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks
|