Sandman Posted July 30, 2018 Posted July 30, 2018 Anyone tried to swap a crankhaft and transmission from 1127 into 1052 gsxr engine? Quote
Sandman Posted July 31, 2018 Author Posted July 31, 2018 why?Because I've got 2 (low milage) engines for free from a friend. Engine No. 1: 1127ccm with damaged crankcase after a crash Engine No. 2: 1052ccm with damaged crankshaft and rods Therefore, I will try to swap the crankshaft, pistons, rods and transmission from 1127ccm into the 1052ccm crankcase. Quote
Gixer1460 Posted July 31, 2018 Posted July 31, 2018 Haven't the 1127's got 1mm longer stroke..............so you'll need the barrels as well. Clutch has to match the crank as well. Quote
Sandman Posted July 31, 2018 Author Posted July 31, 2018 The 1127 has 59 mm stroke, and 1052 had 58 mm stroke, but the height of the barrels are the same. 1 Quote
Gixer1460 Posted July 31, 2018 Posted July 31, 2018 58 minutes ago, Sandman said: The 1127 has 59 mm stroke, and 1052 had 58 mm stroke, but the height of the barrels are the same. Which implies the pistons are taller in the 1052? And so if used with a +1mm stroke they'll pop out the top of the block. Can't use the 1127 pistons unless you over bore the barrels hence matching barrels to crank. Quote
Sandman Posted July 31, 2018 Author Posted July 31, 2018 Maybe the rods are longer for the 1052 engine? 1 Quote
jonny1bump Posted July 31, 2018 Posted July 31, 2018 Stroker it is then wonder if there is 1 mm in pistons to machine tops off. Valve to piston clearance would be interesting. Quote
jonny1bump Posted July 31, 2018 Posted July 31, 2018 2 hours ago, Sandman said: why?Because I've got 2 (low milage) engines for free from a friend. Engine No. 1: 1127ccm with damaged crankcase after a crash Engine No. 2: 1052ccm with damaged crankshaft and rods Therefore, I will try to swap the crankshaft, pistons, rods and transmission from 1127ccm into the 1052ccm crankcase. Was thinking perhaps building sneaky slabby racer. Quote
jonny1bump Posted July 31, 2018 Posted July 31, 2018 Just thought is 1052 barrel bolt hole pitch different. Quote
Sandman Posted July 31, 2018 Author Posted July 31, 2018 36 minutes ago, no class said: the difference in stroke is at the crank . It is obvious :-) Quote
Sandman Posted July 31, 2018 Author Posted July 31, 2018 19 minutes ago, jonny1bump said: Just thought is 1052 barrel bolt hole pitch different. No, the hole pitch is the same. Quote
Sandman Posted July 31, 2018 Author Posted July 31, 2018 1 hour ago, Gixer1460 said: Which implies the pistons are taller in the 1052? And so if used with a +1mm stroke they'll pop out the top of the block. Can't use the 1127 pistons unless you over bore the barrels hence matching barrels to crank. No, because JE 78 mm pistons can be used as standard bore (high-comp) for the 1127 og big-bore (1109) for 1052. Quote
no class Posted July 31, 2018 Posted July 31, 2018 1 hour ago, Sandman said: Maybe the rods are longer for the 1052 engine? well ...that's obvious. Quote
no class Posted July 31, 2018 Posted July 31, 2018 On 7/30/2018 at 7:49 AM, Sandman said: Anyone tried to swap a crankhaft and transmission from 1127 into 1052 gsxr engine? .........well....git out to the garage and have a go....you seem to have all the info . Quote
cregnybaa Posted August 1, 2018 Posted August 1, 2018 On 7/30/2018 at 12:49 PM, Sandman said: Anyone tried to swap a crankhaft and transmission from 1127 into 1052 gsxr engine? Yes 1127 crank will go into 1052 cases, if I remember you have to open the cases a little to get the 1127 cylinder to go on. the last engine I did I used a set of T pot cases all black and brand new old stock with 1127 crank 1216 pistons six speed gearbox . 1 Quote
Sandman Posted August 1, 2018 Author Posted August 1, 2018 46 minutes ago, clivegto said: http://oldskoolsuzuki.info/archives/404 Thanks, it was something like this I was searching for :-) Here is a picture of my old GSXR 750 RR 1 Quote
dupersunc Posted August 1, 2018 Posted August 1, 2018 2 hours ago, Sandman said: Thanks, it was something like this I was searching for :-) Here is a picture of my old GSXR 750 RR Nice bike that, did you sell it? Quote
Sandman Posted August 3, 2018 Author Posted August 3, 2018 I have started the work, is this a bad casmshaft? :-) Quote
wraith Posted August 3, 2018 Posted August 3, 2018 Best way to find out if it will work, when you have two f#ck motors is to just get on and do it You have nothing to lose, and when you have finished you can tell everyone if it can be done Quote
Gixer1460 Posted August 3, 2018 Posted August 3, 2018 4 hours ago, Sandman said: I have started the work, is this a bad casmshaft? :-) If you can feel any step / ridge - then yes its Fubar'd Quote
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