Vapor Vent Pipe & Exhaust Questions
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I'm putting a 99 LS1 in a sandrail and was wondering if I could cap off the "Vapor Vent Pipe" line to the TB. The FSM refers to this as a vapor discharge line to rid the engine of air. Will this cause any problems or is there another way for the air to get out of the engine? I will be using a Ron Davis radiator which I doubt has a provision for the vent line. Could I terminate the line in an over-flow bottle if it was sealed?
I will be running 1 or 2 large K&N air filters and the exhaust will be stock manifolds going to 18" bullet mufflers. Each side will be about 36-48 inches long. How much HP will this otherwise stock 99 be putting out.
I will be running 1 or 2 large K&N air filters and the exhaust will be stock manifolds going to 18" bullet mufflers. Each side will be about 36-48 inches long. How much HP will this otherwise stock 99 be putting out.
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No, don't cap it and don't send it to a sealed overflow bottle (that would be the same as capping it). That line needs to always be able to flow water. You need to add a nipple to the radiator on the return side, or to the return hose with a tee, or to an added fitting on the return side of the water pump. There are several choices, but you should implement one of them.
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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
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Thanks. I've already drilled and tapped a 1/8" pipe thread hole for an Autometer water temperature gauge sensor on the top of where the water inlet hose goes. I can use that for the return hose from the vent pipe and put the water temp sensor in the right rear head. I've already re-tapped it for a reducer to 1/8" pipe.