J.K Posted March 13, 2013 Share Posted March 13, 2013 Hi guys and girls, So I'm thinking of purchasing a second hand Hyper 8 but the current owner isn't sure which engine it has. He's sent me some photos so maybe somebody can ID it for me, as in is it the .21 or .28? To make it a little harder for you he says he recently fitted a new .28 cooling head and a .21 pull start! :/ Any help much appreciated Quote Link to comment Share on other sites More sharing options...
UltimateRC Posted March 13, 2013 Share Posted March 13, 2013 Looks like the .21 to me mate Quote Link to comment Share on other sites More sharing options...
JakePasquill Posted March 13, 2013 Share Posted March 13, 2013 (edited) Looks to be a .21 but its hard to tell Edited March 13, 2013 by JakePasquill Quote Link to comment Share on other sites More sharing options...
snchris1 Posted March 13, 2013 Share Posted March 13, 2013 it looks like the .28 to me, if i recall hyper .21 engines had hyper .21 on the side of the crankcase, but the .28 had just had a H on it. dont hold me to this^^ Quote Link to comment Share on other sites More sharing options...
J.K Posted March 13, 2013 Author Share Posted March 13, 2013 Thanks for the input so far guys, keep it coming! it looks like the .28 to me, if i recall hyper .21 engines had hyper .21 on the side of the crankcase, but the .28 had just had a H on it. I did notice this whilst I was doing my own detective work on google images, I've heard many mixed reviews on the .28 hence my interest into which one it is! Quote Link to comment Share on other sites More sharing options...
Pistonhead Posted March 13, 2013 Share Posted March 13, 2013 (edited) Looks like a .28 to me too, just googled the mac star.28 and it just has the H on the crank case, whereas my hyper 7 has .21 on it. The .28's are prone to air leaks, just tear down, and re seal using instant gasket Edited March 13, 2013 by Pistonhead Quote Link to comment Share on other sites More sharing options...
UltimateRC Posted March 13, 2013 Share Posted March 13, 2013 Looks like a .28 to me too, just googled the mac star.28 and it just has the H on the crank case, whereas my hyper 7 has .21 on it If it has .21 on it, it's probably a .21...... Haha, so .21 crankcase, .21 pullstart, .28 cooling head Quote Link to comment Share on other sites More sharing options...
Anthoop Posted March 13, 2013 Share Posted March 13, 2013 Could be either...both are ok engines. Quote Link to comment Share on other sites More sharing options...
J.K Posted March 13, 2013 Author Share Posted March 13, 2013 Hmmm when you put it like that.....I may give it a miss lol Quote Link to comment Share on other sites More sharing options...
Anthoop Posted March 13, 2013 Share Posted March 13, 2013 Looks like a .28 to me too, just googled the mac star.28 and it just has the H on the crank case, whereas my hyper 7 has .21 on it. The .28's are prone to air leaks, just tear down, and re seal using instant gasket Here is a picture of a .21 with the "H" on the side- http://www.cmldistribution.co.uk/diagrams/HoBao/Engines/HB_Engine_settings_Hyper_21%20_3-Port.pdf Quote Link to comment Share on other sites More sharing options...
mini-z-awd Posted March 13, 2013 Share Posted March 13, 2013 the .21 and .28 use the same pullstart so dont worry about that part and my .21 which i just sold only had a h on it aswell Quote Link to comment Share on other sites More sharing options...
J.K Posted March 13, 2013 Author Share Posted March 13, 2013 Well thanks for everybody's input guys, it was on ebay and went for quite a bit more than I thought was sensible for its condition so gave it a miss. The hunt continues! Quote Link to comment Share on other sites More sharing options...
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