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| Waffle patterns on the floor of aftermarket dual plane intakes https://slantsix.org/forum/viewtopic.php?t=66691 |
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| Author: | Jase [ Sat Jul 23, 2022 10:13 am ] |
| Post subject: | Waffle patterns on the floor of aftermarket dual plane intakes |
I assume they are for fuel efficiency, and helping to vaporize fuel that has not made the turn into the intake runner. Thinking of trying it on a 1bbl intake as I convert it to a parallel 2bbl intake. Any thoughts, reactions, and suggestions welcome. |
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| Author: | MadScientistMatt [ Sun Jul 31, 2022 7:05 am ] |
| Post subject: | Re: Waffle patterns on the floor of aftermarket dual plane intakes |
I think it's meant to trap liquid fuel until the heat of the manifold can vaporize it. Stock manifolds are bond to the exhaust system and already pretty hot, but some of the aftermarket designs have no provision to bolt to the exhaust heat riser. So I'm not sure I would bother adding one unless you're using headers. |
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| Author: | volaredon [ Sun Jul 31, 2022 10:09 am ] |
| Post subject: | Re: Waffle patterns on the floor of aftermarket dual plane intakes |
Most aftermarket manifolds are cast aluminum. I'm thinking they might be strengthening ribs possibly to help prevent cracks? |
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| Author: | Jase [ Mon Aug 01, 2022 7:16 am ] |
| Post subject: | Re: Waffle patterns on the floor of aftermarket dual plane intakes |
I have been wondering on how to improve the factory intake manifold since reading DD's observations-experience about cylinders 2 and 5 being lean when compared to cylinders 1 and 6. viewtopic.php?f=19&t=65856&hilit=87+octane&start=15 |
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| Author: | DadTruck [ Mon Aug 01, 2022 7:22 pm ] |
| Post subject: | Re: Waffle patterns on the floor of aftermarket dual plane intakes |
To even out the fuel at each cylinder the easiest way is to Install multi port fuel injection. With a MS ecu and probably other aftermarket ecu’s one can make adjustments to each injectors dead time / on time to equalize the cylinders. |
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| Author: | MadScientistMatt [ Tue Aug 02, 2022 9:24 am ] |
| Post subject: | Re: Waffle patterns on the floor of aftermarket dual plane intakes |
Quote: I have been wondering on how to improve the factory intake manifold since reading DD's observations-experience about cylinders 2 and 5 being lean when compared to cylinders 1 and 6.
Often, the most effective way to do this with a carb is to cut grooves in the manifold floor. Use these as channels perpendicular to cylinders that run rich, or pointing down the runner for cylinders that run lean. These guide liquid fuel towards or away from cylinders.viewtopic.php?f=19&t=65856&hilit=87+octane&start=15 You'll also want to keep tabs on the individual cylinders - plug reading if on a budget, individual EGT probes if you are making a max effort race build. |
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| Author: | Jase [ Tue Aug 02, 2022 7:07 pm ] |
| Post subject: | Re: Waffle patterns on the floor of aftermarket dual plane intakes |
Quote: Quote: I have been wondering on how to improve the factory intake manifold since reading DD's observations-experience about cylinders 2 and 5 being lean when compared to cylinders 1 and 6.
Often, the most effective way to do this with a carb is to cut grooves in the manifold floor. Use these as channels perpendicular to cylinders that run rich, or pointing down the runner for cylinders that run lean. These guide liquid fuel towards or away from cylinders.viewtopic.php?f=19&t=65856&hilit=87+octane&start=15 You'll also want to keep tabs on the individual cylinders - plug reading if on a budget, individual EGT probes if you are making a max effort race build. |
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