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| 73mm pistons flat-tops https://www.ausmini.com/forums/viewtopic.php?f=2&t=72676 |
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| Author: | low n blown [ Sat Aug 27, 2011 7:17 pm ] |
| Post subject: | 73mm pistons flat-tops |
Guys i desparately need a set of flat tops in 73mm. Does anybody know of someone making these, or where I can go to have these made up. Am struggling to get the right comp ratio for what I need. I cant machine down a set of hypatecs enough unless I take heaps off the block as the crank is de-stroked, so I need flat tops. |
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| Author: | Nutjob [ Sat Aug 27, 2011 8:09 pm ] |
| Post subject: | |
So you can't skim the head enough either? I had two mm shaved off my head and it still had enough meat to use. Can you get a longer rod and just run the normal pistons, longer rods would suit the revvy nature of a de stroked motor, last time I asked Argo would do custom length rods but finding the right pistons would be a cheaper option I suppose. |
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| Author: | GT mowog [ Sat Aug 27, 2011 8:36 pm ] |
| Post subject: | |
Despite popular (incorrect) belief, Omega still make them and in a variety of crown heights just for a delima such as yours. There is also JP Engineering in Adelaide, however while good, they are not a competion piston. Look too at Honda Jazz and Mazda Capella pistons. |
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| Author: | low n blown [ Sat Aug 27, 2011 8:41 pm ] |
| Post subject: | |
Thanks will try Omega. i cant skim the head any more. Head is very well worked and down to 18cc chamber. G. |
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| Author: | Convertible Mini [ Sun Aug 28, 2011 3:20 pm ] |
| Post subject: | Pistons |
How about the Mazda Pistons that I use ? I have some new and some second if you want to have a look at them. From original form the only mod needed to fit these to the rod is a little honing of the gudgeon pin hole. Great Jap piston. They are slightly shorter in deck height though and I always used these in 84mm strokers. All depends on the block decking too. Available in 73, 73.5, 74, and 74.5 mm. |
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| Author: | low n blown [ Sun Aug 28, 2011 6:28 pm ] |
| Post subject: | |
They may be something I can use. Any idea of height pinion to crown??, and the top ring land thickness, in case I need to machine them. I am running a short stroke 80mm and currently the block isnt far off standard deck height. The Hypatec's are perfect fit and height if only they were flat-tops. I appreciate your assistance. G. |
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