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DRR Sportsman |
Fixing to order a vacuum pump, GZ most likely since I have already talked to them and was pleased with their honesty with that in mind, I have the engine out of the car and apart for freshening. Will need rings, bearings, gaskets, etc. So the current ring set will be fine (top and 2nd rings) and I will be using low tension oil rings, standard for use with vacuum pump as I understand from the guys at GZ. I am going to have to do some work on the pan. My pan, well it is not good, will replace it with a good race pan. Currently using a stock 80-96 F150 pan (351w based engine). After reassembly I will smoke test the engine to minimize air and possibly oil leaks. I usually do this anyway. Anything else I need to do with respect to installing vacuum pump, while I have it apart? | ||
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DRR Sportsman |
Sometimes you install the rear main seal backwards, | |||
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DRR Pro |
You can, but it will leak if you lose vacuum for any reason. They make double lip seals now that work very well. I'd recommend one of those before turning a seal around backwards. Mark Goulette Owner/Driver of the Livin' The Dream Racing dragster www.livinthedreamracing.com "Speed kills but it's better than going slow!" Authorized Amsoil Retailer | |||
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DRR S/Pro |
There is no reason to install the rear seal backwards, ever! I run the regular Felpro rear seal and can pull over 16 lbs of vacuum with my Moroso 4 vane pump. Most low vacuum issues are either poor ring seal or leaks into the crankcase or both. I do not recommend running low tension oil rings in a bracket motor either. | |||
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