hercalmighty Posted February 19, 2009 Report Posted February 19, 2009 Ok. I understand the idea of porting or matching your cases to the transfers on the cylinders. So Im not asking that. My question is, I see alot of guys grinding out the transfers then filling them back in with epoxy. Why are you guys doing this? Am I missing something? Wouldnt it just be easier to not dig in as deep and not have to use the epoxy? Or am I totally retarded? Someone help me out please. Quote
blowit Posted February 19, 2009 Report Posted February 19, 2009 Ok. I understand the idea of porting or matching your cases to the transfers on the cylinders. So Im not asking that. My question is, I see alot of guys grinding out the transfers then filling them back in with epoxy. Why are you guys doing this? Am I missing something? Wouldnt it just be easier to not dig in as deep and not have to use the epoxy? Or am I totally retarded? Someone help me out please. Could you better explain what your referring to? The transfer tunnels in the cylinder or case? Where is this epoxy? There are several reasons to use it but not sure what area you are talking about. Brandon Quote
hercalmighty Posted February 19, 2009 Author Report Posted February 19, 2009 Sorry my fault. The transfers in the cases. Guys say they grind out the transfers in the cases then fill it back with epoxy. now my question is wouldnt it just be easier to not grind as much out? Or like I said before am I just retarded? Quote
tony cub Posted February 19, 2009 Report Posted February 19, 2009 Sorry my fault. The transfers in the cases. Guys say they grind out the transfers in the cases then fill it back with epoxy. now my question is wouldnt it just be easier to not grind as much out? Or like I said before am I just retarded? it's just for better flow...if your running alky dont use epoxy.. Quote
hercalmighty Posted February 19, 2009 Author Report Posted February 19, 2009 Ok. What do you epoxy and why does it flow better? I thought I saw someone say to leave it rough like your cylinder porting to help with the atomization. Is this true or what? Sorry for all the question. Im getting my cylinders ported and when I get them back I want to match up the cases. So any info would be great. Quote
AKheathen Posted February 19, 2009 Report Posted February 19, 2009 ok, what's going on is, that when you match the transfers, you are removing from the top, increasing volume, which lowers the preesure from the bottom of the piston, and slows airspeed. you compensate by adding material lower than the cutout Quote
hercalmighty Posted February 19, 2009 Author Report Posted February 19, 2009 Ok that takes me back to my orginal question of, Wouldnt it just be easier to not grind as much metal away instead of hogging it out and filling it back in with epoxy? Quote
AKheathen Posted February 20, 2009 Report Posted February 20, 2009 Ok that takes me back to my orginal question of, Wouldnt it just be easier to not grind as much metal away instead of hogging it out and filling it back in with epoxy? like i was trying to say, you take from one area, and add to another to compensate Quote
blowit Posted February 20, 2009 Report Posted February 20, 2009 We have found no reason or test data that would prove epoxy is the way to go for simple case matching. Just not adding that much displacement to create an issue. True also that the wrong epoxy can flake off, especially with alky blends and do more harm than good. We have done plenty of cylinder epoxy in the quest for the most but that is usually not necessary. Blend out the cases and roll. Quote
AKheathen Posted February 20, 2009 Report Posted February 20, 2009 and of course, you hav to rough it up for the epoxy to stick better, but that's not hogging it out in that area Quote
hercalmighty Posted February 20, 2009 Author Report Posted February 20, 2009 If your not filling in the transfers what are you filling in with epoxy? All the pics I have seen it looks like guys are grinding out the transfers and then fill it back in. Maybe Im missing something? Does somebody have a pic of where you fill in? Quote
hercalmighty Posted February 20, 2009 Author Report Posted February 20, 2009 Ok you two wrote back as I was writing. So blowit, just blend the transfers to match and go with it? Am I thinking too much about this? Quote
blowit Posted February 20, 2009 Report Posted February 20, 2009 Ok you two wrote back as I was writing. So blowit, just blend the transfers to match and go with it? Am I thinking too much about this? Just blend and roll on. Yes, you are putting too much thought into it. The reason some engine work gets "technical" is because it needs "talked up" to oppose it's simplicity. Case blending is easy, just DO NOT screw up the gasket surfaces or you will have a nightmare on your hands. Quote
hercalmighty Posted February 20, 2009 Author Report Posted February 20, 2009 Cool got it thanks man. I have a tendency to over think things. So thank you for saying "keep it simple stupid" Quote
werner Posted February 20, 2009 Report Posted February 20, 2009 Do you or anybody have any pics? Im getting ready to port match my cases and would like to see some others. Quote
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