{"id":923,"date":"2010-07-25T23:22:16","date_gmt":"2010-07-25T23:22:16","guid":{"rendered":"http:\/\/irsandy.wordpress.com\/?p=923"},"modified":"2016-08-05T15:00:34","modified_gmt":"2016-08-05T21:00:34","slug":"1973-gt750-rebuild-carburettors","status":"publish","type":"post","link":"https:\/\/www.oldjapanesebikes.com\/blog\/2010\/07\/25\/1973-gt750-rebuild-carburettors\/","title":{"rendered":"1973 GT750 Rebuild – Carburettors"},"content":{"rendered":"

Next on the list for the 1973 GT750 project<\/a>, was to get a set of usable carburettors. I had bits for five and a half carb’s, but they are ‘handed’ in the sense that the left side carb has a \"Carbs\"<\/a>different throttle slide than do the middle and right ones, plus of course the middle carb is jetted differently from the outside two. Right off the bat, I had a problem as when I looked at what I had carefully, I found that a couple of the bodies were damaged or had been modified – for example the throttle slide stop screw on one had evidently been lost at some point, and replaced with a Robertson headed machine screw !<\/p>\n

Each carburettor body is stamped on the engine block side with a (very) small \u00a0L,M or R \u00a0to show where they go. Of the six bodies I had, four were usable and luckily the one of them was a ‘left’, two were right and one was a middle. So far, so good.<\/p>\n

When I checked the spring lengths I found they were a mishmash of lengths – I suspect it likely that the shorter ones came from 1972J GT750’s as the 1973K had a different, taller, cap than did the J and so also had a shorter spring. At any rate, after carefully checking through all the bits and pieces I felt lucky to have enough bits to build three carb’s .<\/p>\n

I had picked up an ultrasonic cleaner from Harbor Freight<\/a> on our last trip into Montana – this particular unit was large enough that I could fully immerse a carburettor and it did a really nice job. I used a small amount of malt vinegar with some Simple Green and water. After a couple of heated four minute cycles, the carburettors came out spotless. After a rinse in clean water, and a blow out with some carburettor cleaner of the smaller passageways and then an air hose, I was good to go.<\/p>\n

I used a carburettor repair kit from Japan – really all I wanted was the gaskets and it was the cheapest way to get them – I re-used the jets and the needle as there were no signs of wear at all on the ones I kept. I suppose we will find out soon enough if that was a smart idea or not !<\/p>\n","protected":false},"excerpt":{"rendered":"

Next on the list for the 1973 GT750 project, was to get a set of usable carburettors. I had bits for five and a half carb’s, but they are ‘handed’ in the sense that the left side carb has a … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[6],"tags":[13,46,48,111,205,242,282],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/p2Yjgi-eT","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.oldjapanesebikes.com\/blog\/wp-json\/wp\/v2\/posts\/923"}],"collection":[{"href":"https:\/\/www.oldjapanesebikes.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oldjapanesebikes.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oldjapanesebikes.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oldjapanesebikes.com\/blog\/wp-json\/wp\/v2\/comments?post=923"}],"version-history":[{"count":2,"href":"https:\/\/www.oldjapanesebikes.com\/blog\/wp-json\/wp\/v2\/posts\/923\/revisions"}],"predecessor-version":[{"id":1594,"href":"https:\/\/www.oldjapanesebikes.com\/blog\/wp-json\/wp\/v2\/posts\/923\/revisions\/1594"}],"wp:attachment":[{"href":"https:\/\/www.oldjapanesebikes.com\/blog\/wp-json\/wp\/v2\/media?parent=923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oldjapanesebikes.com\/blog\/wp-json\/wp\/v2\/categories?post=923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oldjapanesebikes.com\/blog\/wp-json\/wp\/v2\/tags?post=923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}