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Review on πŸ”§ Fel-Pro Rear Engine Main Seal Set - BS 40644 by Jared Bradford

Revainrating 5 out of 5

Finally understood!

For the correct installation of such an important installation, there are practically no instructions/diagrams. My car is a 2000 F150, 5.4 2V L. The pictures pretty much say it all. 1.) PTFEM Be sure to clean the crank with alcohol. PTFE is a hermetic lip seal, not a spring. Dry installation, no oil or grease allowed. I plan on using some RTV on the outside, but I've also read that a bit of lube is acceptable to help with installation. NOT indoors, only outdoors. Presumably the sealing lip has a teflon material that bonds to the crank some time after the first run. 2.) Gasket Flaring Tool: The purpose of the plastic cup is to slightly stretch the lip/inner seal during dry installation. . After moving the seal over the lip/sleeve, past the plastic stretching tool, the seal should relax after reaching its final position over the crank. If you don't use a flare tool there is a risk that the lip will roll back (towards the flywheel). 3.) Installation: As for the depth of the gasket, I will install it flush with the outside of the cover. 1/4 inch. outside again where the flywheel connects to the crank. The old gasket kit included a second, factory "baffle" gasket, but read that it didn't need to be reinstalled. The new seal has a smaller outer lip that keeps dirt out. The aluminum body was pulled out to take out both the slingshot and rear main (probably not necessary, just a pain to get the seals out). I installed the cover a few days before installing the gasket (there was no gasket, I used RTV). There are several videos on YouTube of people installing the seal in the cover before the cover is attached to the engine. It didn't make much sense to me. The slab requires special care because you need to use RTV. BTW: I went to Lowe's and bought a PVC cleaning plug to install a gasket, I believe 4 inches. It worked great. Here is a similar product: https://smile.amazon.com/Genova-71840-products/dp/B000BPD95W/ref=sr_1_2?keywords=4%22+PVC+Threaded+Plug&qid=1575852340&sr=8-2

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