drca Posted February 9, 2018 Report Share Posted February 9, 2018 I have a buddy selling a brand new 280 cylinder + piston. I am thinking about getting it to upgrade my 250 (2013 TXT Pro). My question is: are the heads the same or do I need to get a new head to? Thanks. Quote Link to comment Share on other sites More sharing options...
section swept Posted February 9, 2018 Report Share Posted February 9, 2018 Lot of work for extra 30cc’s! ? Quote Link to comment Share on other sites More sharing options...
drca Posted February 9, 2018 Author Report Share Posted February 9, 2018 1 minute ago, section swept said: Lot of work for extra 30cc’s! ? Yeah, altho work isn't as much the problem as the $'s. I need to take the engine out because I have a cracked engine mount at the back (and it's cheaper than buying a new bike) so once the engine is out, changing the jug / piston isn't that big of a job (especially on a 2 stroke!). Quote Link to comment Share on other sites More sharing options...
section swept Posted February 9, 2018 Report Share Posted February 9, 2018 Ooh sorry to hear that, good Tig welder operator needed, hope you get that sorted ok. Reckon you’ll find that the cylinder head for 250/280 are the same but you may need a special (280) head gasket. Main question is the barrel the right one for your 2013 crankcases? When you come to refit the engine back into the frame try to ensure nothing is out of alignment eg frame bent, twisted. Don’t tighten any mounting bolts more than finger tight and then look to see if the frame lugs/engine mounts have any gaps, you may need to shim up if you locate any. ?? Quote Link to comment Share on other sites More sharing options...
lineaway Posted February 9, 2018 Report Share Posted February 9, 2018 Look it up on Gas Gas website. Head or just insert, or maybe both. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted February 10, 2018 Report Share Posted February 10, 2018 think its just an insert on a 280 250 swap on a 13 1 Quote Link to comment Share on other sites More sharing options...
baldilocks Posted February 11, 2018 Report Share Posted February 11, 2018 @drca I've tried to pm you but message won't go through Quote Link to comment Share on other sites More sharing options...
drca Posted February 13, 2018 Author Report Share Posted February 13, 2018 On 2/11/2018 at 2:43 AM, baldilocks said: @drca I've tried to pm you but message won't go through PMed you Quote Link to comment Share on other sites More sharing options...
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