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<\/a><\/p>\nThe vacuum supply hose drapes down from the engine bay ceiling and connects to the top of the vacuum pump.<\/p>\n
The pump has an inlet on top that allows for the hose to connect with a clamp.\u00a0 That is precisely where the problem lies.\u00a0 That mounting bolt rubs on the hose, thus over time, ruining its ability to hold vacuum pressure.<\/p>\n Here is the location of the bracket hole that is causing all this trouble:<\/p>\n One way to fix this is to run a countersunk bolt in there.\u00a0 I didn’t want to bore out a 45 deg countersink in that bracket.\u00a0 So instead, I used a Dremel to grind out about 3\/16″-1\/4″ of material in that bolt hole.<\/p>\n There is still plenty of meat to that bracket, so it shouldn’t affect the structural integrity of the bracket.\u00a0 By deepening the hole, the bolt sits inside the hole, and avoids the hose all together.<\/p>\n Once ground down, I sanded the whole bracket and gave it a new coat of high-temp paint:<\/p>\n I reinstalled the bracket on the cylinder head to see how it fits.\u00a0 Thankfully, the deepening of the hole didn’t require me to get a shorter bolt.\u00a0 You may need to chase your threads prior to installing this modified bracket.<\/p>\n That’s about it.\u00a0 Reinstall the vacuum pump and it shouldn’t clash with the hose anymore.<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n No warranty. You are responsible for your vehicle. For novelty use only. Not responsible for anything or anyone. Not responsible for damage to your vehicle, you, or anyone or anything.<\/b><\/p>\n Copyright 2000-2018\u00a0Nick Pisca<\/a>\u00a00001D LLC<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n