393 Windsor Build Part 5 OEM 351W Piston Rod Assembly Vs the 393W Stroker Piston Rod Assembly
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- Опубликовано: 4 янв 2023
- One of the suggestions I received before I started this video series was to do a piston rod comparison and to look at ring thickness and how it effects drag, so that is what is short video is about. Please check out the other videos in this series.
• 393W build 
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Great video. Thank you for posting! I had been using the fel pro tool and hammer like an idiot! 😂 I'm thinking of making a tool like yours out of an old flex plate i have laying around.
Glad I could help
Cool to see an in depth 393 build. Seems like 408 is the norm. I’m currently building a393 of my own. Also in Montana and with an un heated garage, the struggle is real lol
What part of the frozen north are you in?
El cambio de radio de la viela cambia de forma critica en esta configuración de stroker.. arme uno con pistones OEM y en 2 meses de uso desarme y lo pistones salieron fracturados..
Thankfully this was a kit so the pistons are up to the task.
You could just adjust the gap on the rings. That's what they did on horsepower TV build and they measured the drag. Couple thousandth on the gap cut the drag in half
A wider gap will create more blow by, I would much rather have the better rings than widen the gap in the ones I have.
You could have had a much better build using SBC rod journal size on the crank, matching rod and much shorter piston with a modern ring pack. The additional friction of those big rod bearings and rings create faster wear and higher oil temps as well. The 3.850 stroke, stock 351 rod, 302 piston combo was envisioned to be a cheap claimer IMCA engine package to pair up with N351 heads. Cheaper is not often better. I love a 393W, my early ones used 6.125 rods and 383 SBC pistons 🏁
Thanks for the education. I was not aware of the other options. I purchased this combo because it was a ready made kit.
I'm glad you brought up the piston ring thickness's and said to check before you order replacement rings if you are rebuilding your stock engine. From what I found out on Sealed Power catalog is the Compression height varies depending on your ring thickness. A 1.5mm ring thickness should have a 1.784" Compression Height and a 5/64"/2mm Ring should have a compression height of 1.765". Could you verify your CH on your piston?? Thank you.
I got 1.782” but I would say the .002” difference was measurement error on my part.
@@dazecars Awesome. Thank you for confirming this. These two different CH pistons is why some F4TE blocks seemed like they are Zero Decked VS -.020" from the factory.
@@440cubicinch Glad I could help!!
Day, whose piston is it, and do you have a part number?
At 2:04 in the video he shows a side comparison of the pistons. The New Piston is a KB364 piston as you can see it cast in to it.
It’s a KB364.030. Looks like summit has them