karmagedon Posted March 24, 2011 Author Share Posted March 24, 2011 Fuk that made a phenominal difference in acceleration. Well worth the free effort I would say Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted March 24, 2011 Share Posted March 24, 2011 do you have access to a lathe? Quote Link to comment Share on other sites More sharing options...
Spencer Posted March 24, 2011 Share Posted March 24, 2011 ^ yea listen to him Quote Link to comment Share on other sites More sharing options...
karmagedon Posted March 24, 2011 Author Share Posted March 24, 2011 I think I will read up and get more into this head modding, seems like a lot of gains can come from a decent head. Thanks boes, wouldn't have even bothered to think of it otherwise Quote Link to comment Share on other sites More sharing options...
Spencer Posted March 24, 2011 Share Posted March 24, 2011 I know with some of the honda 50's Ive had to much compression and they would get too hot, needed to get the lush big fin head to compensate. Plus as said squish band, theres heaps of info on the net, the moped forums are lush Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted March 24, 2011 Share Posted March 24, 2011 look into squish bands you have none so even a rough basic one will give you a faster combustion, more power and possibly a cooler running engine. you can do this by machining an insert or welding the chamber up and starting from there Quote Link to comment Share on other sites More sharing options...
Spencer Posted March 24, 2011 Share Posted March 24, 2011 Oh also these things are gold for after market bits! well compared to some similar scooters. Still can cheaply get big bores and heads to match, mean pipe and sweet intake and reed setups. Probably just spent 600+ buying all that shit but would be a mean death trap scoots then Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted March 24, 2011 Share Posted March 24, 2011 big bores are for cheats Quote Link to comment Share on other sites More sharing options...
karmagedon Posted March 24, 2011 Author Share Posted March 24, 2011 would the head gasket not add some sort of squish band? because the current arangement looks something like this Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted March 24, 2011 Share Posted March 24, 2011 not really heres some basics http://www.datafan.com/bimotion/2stroketheory.html Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted March 24, 2011 Share Posted March 24, 2011 did you shave off the angled bit? Quote Link to comment Share on other sites More sharing options...
karmagedon Posted March 24, 2011 Author Share Posted March 24, 2011 yea... not a good move? Quote Link to comment Share on other sites More sharing options...
Truenotch Posted March 24, 2011 Share Posted March 24, 2011 Machine one back in & it will go faster = put it in a lathe and add a taper leading up to the squish zone. You can probably lose another mm off the head while you're at it too . Quote Link to comment Share on other sites More sharing options...
karmagedon Posted March 24, 2011 Author Share Posted March 24, 2011 can def lose atleast 1mm more, but I think I will run into cooling issues. Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted March 24, 2011 Share Posted March 24, 2011 machine one back in equal to the angle on the piston is a good start, with everything bolted back on you want about 0.8mm clearance between the edge of the piston and your shiney new squish squish zones aid with cooling but 'loose power' ie it will add (example only) 10% more power but 7% will be lost with a taper on the piston and a flat head like you have now you may be causing excessive blow by VEERRRRYYY bad on a tinger Quote Link to comment Share on other sites More sharing options...
Spencer Posted March 24, 2011 Share Posted March 24, 2011 ^ yea listen taper squish, but for reals these bitches get hot as shit with too much comp. I suggest meth to fix this Quote Link to comment Share on other sites More sharing options...
Truenotch Posted March 24, 2011 Share Posted March 24, 2011 I suggest meth to fix this Quote Link to comment Share on other sites More sharing options...
10Speed Posted March 25, 2011 Share Posted March 25, 2011 this may interest you https://www.1977mopeds.com/product/2255 ... 7-Alu-Kit/ cheap as chips Quote Link to comment Share on other sites More sharing options...
karmagedon Posted March 25, 2011 Author Share Posted March 25, 2011 Is that price only for today? Is a lush deal Quote Link to comment Share on other sites More sharing options...
10Speed Posted March 25, 2011 Share Posted March 25, 2011 I think its today only - though I am sure it will be there tomorrow (just at a higher price) Quote Link to comment Share on other sites More sharing options...
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