ChoppedSpots Posted September 2, 2021 Share Posted September 2, 2021 Hey guys, Correct me if I'm wrong, please. Am learning lots. Have obtained a 25det neo block. Just requires a head. As far as im aware S1/S2 are interchangeable for the neo block however would require different pistons to lower compression? The cost in NZ to find a neo head is through the roof, just looking at alternative options. Otherwise if this is not viable i'd just have to suck it up and find my own neo head. Thanks! Link to comment https://www.sau.com.au/forums/topic/482791-s1s2-25det-head-on-neo-block/ Share on other sites More sharing options...
GTSBoy Posted September 2, 2021 Share Posted September 2, 2021 On 9/2/2021 at 6:29 PM, ChoppedSpots said: S1/S2 are interchangeable for the neo block however would require different pistons to lower compression? No, exactly the opposite. Neos have chambers that are ~10cc smaller than vanilla 25s, and so they have pistons with lower crowns (to achieve approx the same compression ratio as vanilla). If you put the big vanilla chamber on a Neo piston, you get very low compression. What you need is vanilla pistons to go with the vanilla head. 1 Link to comment https://www.sau.com.au/forums/topic/482791-s1s2-25det-head-on-neo-block/#findComment-7955447 Share on other sites More sharing options...
ChoppedSpots Posted September 4, 2021 Author Share Posted September 4, 2021 On 02/09/2021 at 10:38 PM, GTSBoy said: What you need is vanilla pistons to go with the vanilla head. Awesome, makes sense. Thank you for the reply! Link to comment https://www.sau.com.au/forums/topic/482791-s1s2-25det-head-on-neo-block/#findComment-7955520 Share on other sites More sharing options...
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