Wildcardracing Posted July 14, 2008 Report Posted July 14, 2008 Sorry bud, the 795's are available in .020" increments only, whereas the standard 513's are available in .010" increments. You are currently at a .030" overbore and would need to go to a .040" over which is a 65mm bore. I believe wiseco's part # that you will need is 795MO6500. Hope all that helps. You might try searching Vito's and TDR to see if they offer long rod type pistons in .010" steps, I'm not sure. -Slo Quote
caleb205 Posted July 14, 2008 Author Report Posted July 14, 2008 i was afraid of that. i'll check around and hopefully find another brand in the size i need. thanks again for all the help. this forum has been a headache saver time and time again. thanks, caleb Quote
blowit Posted July 14, 2008 Report Posted July 14, 2008 i was afraid of that. i'll check around and hopefully find another brand in the size i need. thanks again for all the help. this forum has been a headache saver time and time again. thanks, caleb You will not find another brand in the size you need because Wiseco was the only company to offer a LR piston, at least to my knowledge. So do I get some sort of plaque or something for winning the guessing game????? :biggrin: Um, I am not sure about the rest of your ports but it sure looks like the exhaust could use some flow help. Might not be a bad idea to clean them up a bit. Brandon Quote
Wildcardracing Posted July 15, 2008 Report Posted July 15, 2008 You will not find another brand in the size you need because Wiseco was the only company to offer a LR piston, at least to my knowledge. So do I get some sort of plaque or something for winning the guessing game????? :biggrin: Um, I am not sure about the rest of your ports but it sure looks like the exhaust could use some flow help. Might not be a bad idea to clean them up a bit. Brandon Not entirely true, WSM makes them for TDR. But, checked today and they're also only available in .020" increments. Sorry bud. Oh and as a side not I agree, those exhaust ports look pretty rough for my liking. Quote
mopar1rules Posted July 15, 2008 Report Posted July 15, 2008 (edited) it looks like someone tried to open the exhaust ports a little bit. i think it was ray charles that was on the dremel though :biggrin: Edited July 15, 2008 by mopar1rules Quote
caleb205 Posted July 15, 2008 Author Report Posted July 15, 2008 i'm probably just going to go ahead and order the wiseco lr pistons, 65mm, and have the porting done at the same time as the bore. i'm going to try and get all my ducks in a row this time before spending the night in the garage putting the thing back together though. thanks again blowit and slobanshee06, you were very helpful and thanks for relaying the info without making me feel like a jackass. very appreciative. caleb Quote
caleb205 Posted July 15, 2008 Author Report Posted July 15, 2008 one more question before i go to bed. what are the best steps to take on this? purchase the 795 series lr pistons and take them to the machine shop and have them match the cylinders to the pistons, and what do i need to tell them about porting? is it something they'll be able to tell by looking at them themselves or am i looking for a specific port size. the machine shop i go to is very reputable and nationally known (rather expensive too). thanks, caleb Quote
blowit Posted July 15, 2008 Report Posted July 15, 2008 one more question before i go to bed. what are the best steps to take on this? purchase the 795 series lr pistons and take them to the machine shop and have them match the cylinders to the pistons, and what do i need to tell them about porting? is it something they'll be able to tell by looking at them themselves or am i looking for a specific port size. the machine shop i go to is very reputable and nationally known (rather expensive too). thanks, caleb I doubt you will get them to mess with your ports unless they know porting. Most machine shop guys will make a hole and maybe chamfer the ports but that is it. Make DAMN sure your ports are all chamfered where they converge with the bore or you will hang a ring and kill your engine. As far as DYI clean up porting, buy some various grits of flapper wheels or any type of rotary sanding tools and work out those gouges. Probably start with 40-60 grit for that one. Yes, buy the pistons and have the bores matched. The other way is a GOOD way to get yourself in trouble. Seen it toooo many times. Brandon Quote
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