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2nd Class Ticket
Posts: 49 
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Post by 0105 on Jul 27, 2017 21:59:49 GMT
What's the difference between a polini 180 and a polini 177 or a dr 180 and a dr177? Are they the same as I want to put a polini 180 head on my dr177 kit
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Post by ironsloth on Jul 27, 2017 22:30:04 GMT
Hate to say it... About 3cc 😆
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0105
2nd Class Ticket
Posts: 49
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Post by 0105 on Jul 28, 2017 6:20:24 GMT
😂😂 someone was going to say it lol seriously though are the Pistons a slightly different size or is it just that people round the number up on the ccs and some people don't
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Post by henri on Jul 28, 2017 8:19:42 GMT
theres no difference in bore size ,ive seen the same kits described as 177 or 180 .i think the difference is in piston crown height ,if trying a polini head on a dr barrel or vice-versa i'd carefully check the squish on set up .just to be sure . H
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0105
2nd Class Ticket
Posts: 49
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Post by 0105 on Aug 20, 2017 11:16:21 GMT
Just hit round to fitting the polini head on the DR kit and I must say it is actually pretty noticeable how much better it runs with it compared to the standard DR head, smoother acceleration, and a bit better top speed, although I'm sure this is purely down to the squish being about 1.3mm instead of about 3mm on the DR head
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