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I ported a manifold using RallyBob's pictures and article as a guideline, but did not install a "tent". I just opened up everything as best I could. I broke through the stove mounting holes and plugged them solid with JB Weld. The JB Weld in the manner I used it, has been holding up just fine.
I was down right amazed at the performance improvement obtained. Not bad for a $5 eBay manifold, about $50 worth of materials and a few hours of work. Best and simplest bang for the buck mod I've done.
Seems like adding the "tent" as suggested in the "Torquer" modification really adds time and complexity. Just curious, is there any way to quantify the benefit obtained doing this mod?
I mean if a well ported manifold gets you, say...85% of the benefit you're going to get, is the last percentage really worth all the effort it's going to take? Or are the above numbers really wrong, and adding the "tent" is most definitely an untapped resource of performance that's worth the effort? Inquiring minds want to know.
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