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#179127 MrFurious (User) Flatlands of NW Ohio Gold Boarder Posts: 646 Anyone Know? 3 Years, 2 Months ago   Does anybody know how similar/dissimilar the Roadstar and newer Liner engines are? Is it the same bottom end with just a bored/stroked top-end? Are the cylinders/heads any taller? Just curious as to whether it would be an easy bolt-in into a Roadie frame or if the mounts and/or overall height would prevent it. Starting to see some Liner engines for sale from wrecked bikes, and for the price it would be a lot cheaper than what you'd wrap up in building up the stock motor with a big-bore kit, carb, cams, head porting, etc. The Liner engine would also likely be a more reliable/durable and you'd get fuel injection to boot.   Logged     The administrator has disabled public write access. #179141 Hotelfox (User) Riding The BIG RED THUNDERCHICKEN!! Platinum Boarder Posts: 1788 Re:Anyone Know? 3 Years, 2 Months ago   You could ask BB that, he has em both I think.   Logged     Proud Member of Patriot Guard Riders Hiram\\\\\\\'s Riders M C   The administrator has disabled public write access. #179144 PhantomXT (User) 4 wheels move the body. 2 wheels move the soul. Fresh Boarder Posts: 44 Re:Anyone Know? 3 Years, 2 Months ago   I'd love to build a chopper with one of those! I am assuming they would be pretty close. Roadstar= 102-cubic-inch (1670cc) air-cooled 48° V-twin; pushrod OHV, 4 valves/cylinder Liner= 113-cubic-inch (1854cc) air-cooled 48° V-twin; pushrod OHV, 4 valves/cylinder I'm no expert, but I'm assuming the only difference would be the bore. Why would they have completely different tooling for a motor with the same specs just to add 11 c.i.'s   Logged       The administrator has disabled public write access. #179220 Big Bear (Moderator) Who loves you , Baby? Moderator Posts: 6997 Re:Anyone Know? 3 Years, 2 Months ago   P/N for the crankcase's are different from the R* to the 'Liner , and just from the eyeball test , I'd say that's not all. My guess is that by the time you got a 'Liner motor to work in a project , you could have built a stout R* motor with half the headache....... BB   Logged       The administrator has disabled public write access. #179240 MrFurious (User) Flatlands of NW Ohio Gold Boarder Posts: 646 Re:Anyone Know? 3 Years, 1 Month ago   Well, if you look at the requirements for any big-bore kit over 110ci for our bikes, it specifies the cases have to be bored. That might explain why the Yamaha P/N's are different. Also, the current 1700 has a 97mm x 113mm bore and stroke, whereas the 1900 is 100mm x 118mm. That longer stroke probably requires some additional clearancing for the rod angle at the case/jug junction much like you'd have to clearance the block on many V8 stroker motors. Like PhantomXT said, why would they design a totally new engine for just 11 cubic inches?   Logged     The administrator has disabled public write access. #179241 ironman (User) Platinum Boarder Posts: 2382 Re:Anyone Know? 3 Years, 1 Month ago   i have the same dream,liner performance /classic roadstar looks. my buddy owns a liner & i've learned, the only way this'll happen is if i win the lottery. the engine is phyically larger, different mounting points, air filter is under the tank(?), no noe makes duals for them,(my biggest bitch) etc, etc. BUT , IF I WIN THE LOTTERY   Logged     The administrator has disabled public write access. #179376 Makcap (User) How boring it would be if we were all the same Platinum Boarder Posts: 1736 Re:Anyone Know? 3 Years, 1 Month ago   I would say check patrick racing out and you could go as large as a 123 I believe. I would imagine price wise you would be about the same. All I know you wouldn't find too many around.   Logged     RIDE DS:219 MASSILLON OHIO   The administrator has disabled public write access.

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