Rich Fife
Sally slap my ass
- Local time
- 8:38 AM
- User ID
- 26245
- Joined
- Mar 4, 2023
- Messages
- 684
- Reaction score
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- Location
- Central New York
AgreedNeat. I’ve always wanted to shave a piston to fit. It would be great to have more piston options in the strato saws.
The ring pins clear all ports. I'll post a pic later showing that even with the large cut-out there's still approximately 1/4" or more of material before it free ports.How are you going to address the ring pins? That skirt cutout on the 575 slug won’t freeport?
Sweet. I think I can see the exhaust port penciled in on the XT piston, but it’s so high I wasn’t sure if it was TDC.Agreed
The ring pins clear all ports. I'll post a pic later showing that even with the large cut-out there's still approximately 1/4" or more of material before it free ports.
Isn’t the cutout on the exhaust side? What are your thoughts on the ring pins? Relocate them?If you don't want all that intake duration from the cutout in the 575 piston I've tig welded those cutouts in before. Since you're going to cut 1mm off it anyway it would be easy to do before you chuck it up in the lathe.
Yes, that was at TDC.Sweet. I think I can see the exhaust port penciled in on the XT piston, but it’s so high I wasn’t sure if it was TDC.
The pins are recessed slighly, im hoping that when i remove the material that i wont touch the pins... if it happens, im hopong i can heat the piston and remove the pins. And then either drill deeper and make new pins. Freeze the pins and heat the piston and create an interference fit.On the pins, I meant how are you going the spin the piston down without affecting the holes?
yessirAre you planning to machine the ring lands deeper?
people also say if you port a saw it wont last as long.People say if you mess with the pins you increase the chance of one coming free during operation.
Agreed, I'll find out here in a little bit. LolI think they’re just interference fit, so I could see how the holes would enlarge if you punched them out. I wonder what they’re made from.
How does the piston hold up after tig Welding on it?If you don't want all that intake duration from the cutout in the 575 piston I've tig welded those cutouts in before. Since you're going to cut 1mm off it anyway it would be easy to do before you chuck it up in the lathe.
Isn’t the cutout on the exhaust side? What are your thoughts on the ring pins? Relocate them?
How does the piston hold up after tig Welding on it?
I probably won't mess with it this go around. I want to use this build as my baseline... and when I do another, I'll try what you recommended. I have (10-15) junk 372xps and x-torques to play with. I'll be able to dial this build in.Just fine, weld a little bit at time so you don't overheat the rest of it.
Below you can see the line where this piston would be at TDC.Sweet. I think I can see the exhaust port penciled in on the XT piston, but it’s so high I wasn’t sure if it was TDC.
On the pins, I meant how are you going the spin the piston down without affecting the holes?
Had a brain fart... I will have to remove the ring pins or make a jig and machine the rings inner diameter... which way do I go. LolAre you planning to machine the ring lands deeper? People say if you mess with the pins you increase the chance of one coming free during operation. I think they’re just interference fit, so I could see how the holes would enlarge if you punched them out. I wonder what they’re made from.
Below you can see the line where this piston would be at TDC.
Had a brain fart... I will have to remove the rings... or make a jig and machine the rings inner diameter down
Thay would work, but, a lathe would be much faster. I'm going to try and heat the piston and remove the pins,if that doesn't work I'll turn them... drill and make new pins... probably relocate them as well... time will tell... as I'm not sure the route I'll be heading.Rotary table on a mill with a really small end mill to machine the groove diameter?