{"data":[{"archived":true,"author":"longhairedcountryboy","author_flair_css_class":"","author_flair_text":"1977 Ironhead, 2003 Wide Glide","body":"They were made from 1957-78 with few changes.  The valve angle is very steep compared to an evo and they use [high dome pistons](http://www.vtwinmfg.com/webapp/wcs/stores/servlet/VTwinProd5_10101_10102_3290863_-1_143311_143508_143542_143546).  Like the name implies the cylinders and heads are made out of cast iron.","controversiality":0,"created_utc":1394801002,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg2dzzu","link_id":"t3_2076q8","name":"t1_cg2dzzu","parent_id":"t1_cg260p5","removal_reason":null,"retrieved_on":1432796573,"score":2,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":2,"permalink":"/r/Harley/comments/t3_2076q8/cg2dzzu"},{"archived":true,"author":"xilanthro","author_flair_css_class":null,"author_flair_text":null,"body":"Obv. he's just ribbing you... but strictly as a noob - could be!\n\nSo here's the part I don't understand - *ironhead* is apparently a moslty-sporty engine with the transmission in the same case and with that distinctive rocker-box. Mechanically - i.e. included valve-angle, stroke-to-conrod-length-ratio, etc - are they a completely different product?","controversiality":0,"created_utc":1394766397,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg260p5","link_id":"t3_2076q8","name":"t1_cg260p5","parent_id":"t1_cg23bjo","removal_reason":null,"retrieved_on":1432792746,"score":1,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":1,"permalink":"/r/Harley/comments/t3_2076q8/cg260p5"},{"archived":true,"author":"longhairedcountryboy","author_flair_css_class":"","author_flair_text":"1977 Ironhead, 2003 Wide Glide","body":"My [ironhead](http://imgur.com/a/BWmgg) does not have the allen head rocker arm shaft screws.  You need to take that always off.\n\nOne of my friends likes to say it looks like a knucklehead with those screws.  I always tell him he is full of shit but he won't stop.","controversiality":0,"created_utc":1394760075,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg23bjo","link_id":"t3_2076q8","name":"t1_cg23bjo","parent_id":"t3_2076q8","removal_reason":null,"retrieved_on":1432791475,"score":1,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":1,"permalink":"/r/Harley/comments/t3_2076q8/cg23bjo"},{"archived":true,"author":"xilanthro","author_flair_css_class":null,"author_flair_text":null,"body":"Hmm... Im' starting to see why it takes such long hours at the Iron Horse Tavern discussing what's what.\n\nYou guys have been really helpful. I think I might put together a Harley engine guide for noobs to collect all I've been finding out here.","controversiality":0,"created_utc":1394648358,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0vs3m","link_id":"t3_2076q8","name":"t1_cg0vs3m","parent_id":"t1_cg0v3br","removal_reason":null,"retrieved_on":1432770561,"score":1,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":1,"permalink":"/r/Harley/comments/t3_2076q8/cg0vs3m"},{"archived":true,"author":"oldstalenegative","author_flair_css_class":null,"author_flair_text":null,"body":"correct. Though they shared some design similarities the smaller (883 + 900cc) steel ironheads (sportsters) preceded the larger, newer (1200cc) aluminum-alloy-topped shovelheads that replaced the panheads on the larger bikes—Irons and Shovels were manufactured right along side of each other for many years.","controversiality":0,"created_utc":1394647611,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0vdru","link_id":"t3_2076q8","name":"t1_cg0vdru","parent_id":"t1_cg0fq9i","removal_reason":null,"retrieved_on":1432770372,"score":2,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":2,"permalink":"/r/Harley/comments/t3_2076q8/cg0vdru"},{"archived":true,"author":"oldstalenegative","author_flair_css_class":null,"author_flair_text":null,"body":"Stock bikes are easy, it gets tougher when you're looking at some custom bikes.\n\nbasically knucklehead valve covers look like knuckles, pan covers looks like baking pans, and shovel/ironheads look vaguely like shovels.\n\nthe way you tell an ironhead from a shovel is whether the transmission is one unit with the motor or not. \n\nif you're only looking at the heads, ironheads are commonly confused with shovelheads…my father in-law's black sportster chop is always getting called a shovelhead: http://24.media.tumblr.com/tumblr_lhvht2OW191qhzlm1o1_1280.jpg\n\nsometimes panheads got shovelhead upgrades, and sometimes people would even just change the rear head to shovel and leave the front a pan(!)\n\nthen you get maniacs like this that somehow fit a panhead onto an ironhead:\n\nhttp://31.media.tumblr.com/f4b580a6b0308cce1c606c8edfbc56ac/tumblr_mzxh2877Wm1qhzlm1o1_1280.jpg\n\nIronheads are not always with the allen cap nuts—some guys even split the rockers and add big ass brass nuts and then they almost can resemble knuckleheads:\nhttp://photos-b.ak.fbcdn.net/hphotos-ak-ash1/hs433.ash1/23949_1263901910238_1010435000_30660695_7311982_n.jpg","controversiality":0,"created_utc":1394647056,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0v3br","link_id":"t3_2076q8","name":"t1_cg0v3br","parent_id":"t3_2076q8","removal_reason":null,"retrieved_on":1432770247,"score":2,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":2,"permalink":"/r/Harley/comments/t3_2076q8/cg0v3br"},{"archived":true,"author":"[deleted]","author_flair_css_class":null,"author_flair_text":null,"body":"[deleted]","controversiality":0,"created_utc":1394622245,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0lvlw","link_id":"t3_2076q8","name":"t1_cg0lvlw","parent_id":"t1_cg0fq9i","removal_reason":null,"retrieved_on":1432765824,"score":3,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":3,"permalink":"/r/Harley/comments/t3_2076q8/cg0lvlw"},{"archived":true,"author":"redbeardindustries","author_flair_css_class":null,"author_flair_text":null,"body":"http://en.wikipedia.org/wiki/Harley-Davidson_Sportster\n\nhttp://en.wikipedia.org/wiki/Harley-Davidson\n\nthe wiki articles have a pretty solid amount of info to get you started","controversiality":0,"created_utc":1394602431,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0i2wp","link_id":"t3_2076q8","name":"t1_cg0i2wp","parent_id":"t1_cg0hwid","removal_reason":null,"retrieved_on":1432763970,"score":2,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":2,"permalink":"/r/Harley/comments/t3_2076q8/cg0i2wp"},{"archived":true,"author":"redbeardindustries","author_flair_css_class":null,"author_flair_text":null,"body":"the evo sporty motors are still 4 cam, same with the 04+ rubbermount evos","controversiality":0,"created_utc":1394601865,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0hwid","link_id":"t3_2076q8","name":"t1_cg0hwid","parent_id":"t1_cg0gkxy","removal_reason":null,"retrieved_on":1432763887,"score":1,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":1,"permalink":"/r/Harley/comments/t3_2076q8/cg0hwid"},{"archived":true,"author":"3Vyf7nm4","author_flair_css_class":"","author_flair_text":"2003 Anniversary VRSCA","body":"You forgot [Revolution engines](http://i.imgur.com/GmsAFnu.jpg).  You can tell those from the radiator hoses.","controversiality":0,"created_utc":1394601838,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0hw73","link_id":"t3_2076q8","name":"t1_cg0hw73","parent_id":"t3_2076q8","removal_reason":null,"retrieved_on":1432763883,"score":3,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":3,"permalink":"/r/Harley/comments/t3_2076q8/cg0hw73"},{"archived":true,"author":"redbeardindustries","author_flair_css_class":null,"author_flair_text":null,"body":"right side shift, after 73 they are wrong side shift.","controversiality":0,"created_utc":1394601772,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0hvfv","link_id":"t3_2076q8","name":"t1_cg0hvfv","parent_id":"t1_cg0fnee","removal_reason":null,"retrieved_on":1432763872,"score":2,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":2,"permalink":"/r/Harley/comments/t3_2076q8/cg0hvfv"},{"archived":true,"author":"xilanthro","author_flair_css_class":null,"author_flair_text":null,"body":"If the picture above is of a 4-cam engine, why don't the pushrod tube bottom spacings vary from the evo, for example?","controversiality":0,"created_utc":1394598097,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0gkxy","link_id":"t3_2076q8","name":"t1_cg0gkxy","parent_id":"t1_cg0g9bi","removal_reason":null,"retrieved_on":1432763263,"score":1,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":1,"permalink":"/r/Harley/comments/t3_2076q8/cg0gkxy"},{"archived":true,"author":"xilanthro","author_flair_css_class":null,"author_flair_text":null,"body":"The v-rod motor! That was like a 1/4 of a 1978 Porsche 928, right? DOHC, watercooled. Was the attempted Harley Superbike motor unique as well, or was that also a revo?","controversiality":0,"created_utc":1394597871,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0ghq9","link_id":"t3_2076q8","name":"t1_cg0ghq9","parent_id":"t1_cg0gaut","removal_reason":null,"retrieved_on":1432763221,"score":1,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":1,"permalink":"/r/Harley/comments/t3_2076q8/cg0ghq9"},{"archived":true,"author":"xCoolHwipx","author_flair_css_class":null,"author_flair_text":null,"body":"Don't forget the liquid cooled revo motors found in the v-rods. ","controversiality":0,"created_utc":1394597390,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0gaut","link_id":"t3_2076q8","name":"t1_cg0gaut","parent_id":"t3_2076q8","removal_reason":null,"retrieved_on":1432763130,"score":1,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":1,"permalink":"/r/Harley/comments/t3_2076q8/cg0gaut"},{"archived":true,"author":"bromanguydude","author_flair_css_class":"","author_flair_text":"77 shovel chop/93 wide glide","body":"different and preceding yes. Couple of notable differences,\n\nIronheads ran generators until 1985. Shovels went to alternator in 69.\n\nSporties use 4 cam vs one in the shovel.","controversiality":0,"created_utc":1394597285,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0g9bi","link_id":"t3_2076q8","name":"t1_cg0g9bi","parent_id":"t1_cg0fq9i","removal_reason":null,"retrieved_on":1432763110,"score":3,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":3,"permalink":"/r/Harley/comments/t3_2076q8/cg0g9bi"},{"archived":true,"author":"xilanthro","author_flair_css_class":null,"author_flair_text":null,"body":"Ah - thanks /u/sam_j_92. Does that mean they actually were a different engine sort of preceding and concurrent with the shovelhead, only with cast iron heads?\n\nDo they always look like [this](https://i.imgur.com/9mmcu.jpg)?","controversiality":0,"created_utc":1394596006,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0fq9i","link_id":"t3_2076q8","name":"t1_cg0fq9i","parent_id":"t1_cg0fhf1","removal_reason":null,"retrieved_on":1432762861,"score":1,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":1,"permalink":"/r/Harley/comments/t3_2076q8/cg0fq9i"},{"archived":true,"author":"[deleted]","author_flair_css_class":null,"author_flair_text":null,"body":"[deleted]","controversiality":0,"created_utc":1394595816,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0fnee","link_id":"t3_2076q8","name":"t1_cg0fnee","parent_id":"t1_cg0fhf1","removal_reason":null,"retrieved_on":1432762824,"score":3,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":3,"permalink":"/r/Harley/comments/t3_2076q8/cg0fnee"},{"archived":true,"author":"[deleted]","author_flair_css_class":null,"author_flair_text":null,"body":"[deleted]","controversiality":0,"created_utc":1394595551,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0fjbx","link_id":"t3_2076q8","name":"t1_cg0fjbx","parent_id":"t3_2076q8","removal_reason":null,"retrieved_on":1432762770,"score":1,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":1,"permalink":"/r/Harley/comments/t3_2076q8/cg0fjbx"},{"archived":true,"author":"[deleted]","author_flair_css_class":null,"author_flair_text":null,"body":"[deleted]","controversiality":0,"created_utc":1394595426,"distinguished":null,"downs":0,"edited":false,"gilded":0,"id":"cg0fhf1","link_id":"t3_2076q8","name":"t1_cg0fhf1","parent_id":"t3_2076q8","removal_reason":null,"retrieved_on":1432762755,"score":3,"score_hidden":false,"subreddit":"Harley","subreddit_id":"t5_2rbr0","ups":3,"permalink":"/r/Harley/comments/t3_2076q8/cg0fhf1"}]}