Smifee Posted April 9, 2023 Posted April 9, 2023 Whats the max overbores on oil cooled barrels. Guessing the bandit 1200 are best barrels? Is 1216 the biggest you can get with stock liners? Is it much work to have bigger liners fitted? Quote
DAZ Posted April 9, 2023 Posted April 9, 2023 I believe you can get a 1246 kit for b12 barrels as the liners are slightly thicker than the 1127 version can't help on the cost of big liners but don't forget the crankcase will need machining to suit the bigger cylinder spigot and possibly external oil lines too if the machining causes issues with the oiling system 2 Quote
Duckndive Posted April 9, 2023 Posted April 9, 2023 1 hour ago, DAZ said: I believe you can get a 1246 kit for b12 barrels as the liners are slightly thicker than the 1127 version can't help on the cost of big liners but don't forget the crankcase will need machining to suit the bigger cylinder spigot and possibly external oil lines too if the machining causes issues with the oiling system Yes you can indeed "well used to not checked recently" how ever even in a B12 block you end up with thin liners..... 1340 is doable with either thicker liners or a big block "getting scarce" having rode a 1340 it does make a nice grunty road bike 2 Quote
Gixer1460 Posted April 9, 2023 Posted April 9, 2023 I thought that 1371 was the biggest of the overbores before stroking to get capacity increase? Isn't it 86mm bore in a big block - the APE ones were nicest but very rare now! 1 Quote
clivegto Posted April 10, 2023 Posted April 10, 2023 (edited) Crank cases don't always need opening out for bigger liners the bottom of the liners can also be reduced to fit the crank cases like these 1277cc ones. Edited April 10, 2023 by clivegto 8 Quote
TiZiK Posted May 9, 2023 Posted May 9, 2023 On 4/9/2023 at 6:56 AM, Gixer1460 said: I thought that 1371 was the biggest of the overbores before stroking to get capacity increase? Isn't it 86mm bore in a big block - the APE ones were nicest but very rare now! I have APE 85mm Gorilla block. Wasn't aware they made an 86mm. Liners got to be getting pretty thin I would think at 86mm. Quote
Gixer1460 Posted May 9, 2023 Posted May 9, 2023 1 hour ago, TiZiK said: I have APE 85mm Gorilla block. Wasn't aware they made an 86mm. Liners got to be getting pretty thin I would think at 86mm. Quote from APE webpage (later Blandit included for info) : Quote GSXR1100 DISP BORE COMP PART# MFG NOTES PRICE GSXR1100 1989-1992 (1127cc 4 valve) GSX1100F Katana (1988-1989( Bandit 1200 (1997-2004) 1186cc 80MM 12:1 R1186 WIS Cylinder boring only 769.71 1216cc 81MM 12:1 R1216 WIS Includes head gasket. Cylinder boring only. Maximum bore with stock sleeves. 769.71 1216cc 81MM 13.5:1 127642 JE. Cylinder boring only. Maximum bore with stock sleeves. 746.69 1277cc 83MM 13.5:1 127643 JE. Uses SU3450SP sleeves. 678.84 1277cc 83MM 15:1 132495 JE Uses SU3450SP sleeves. DISCONTINUED 1340cc 85MM 13.5:1 127644 JE. Uses SU3550SP sleeves 678.84 1340cc 85MM 15:1 130894 JE. Uses SU3550SP sleeves 678.84 1371cc 86MM 13.5:1 127645 JE. Uses SU3550SP sleeves 746.69 GSXR1100w DISP BORE COMP PART# MFG NOTES PRICE 1993-1998 1117cc 77MM 12.3:1 131367 JE. Cylinder boring only 746.69 1146cc 78MM 12:1 155930 JE. Cylinder boring only 651.22 1195cc 79.5MM 13:1 129682 JE. Big bore sleeves required Includes head gasket 746.69 GSF1200SX BANDIT DISP BORE COMP PART# MFG NOTES PRICE 1996-2006 1117cc 77MM 12.3:1 131367 JE. Cylinder boring only 746.69 1146cc 78MM 12:1 155930 JE. Cylinder boring only 746.69 1195cc 79.5MM 13:1 129682 JE. Big bore sleeves required Includes head gasket 746.69 2 Quote
DTubeMan Posted February 1 Posted February 1 Anybody know if the overhead cooling seen in DucknDive's picture needs any adjustment on the internals of the valvecover? Quote
spiderpig Posted February 1 Posted February 1 36 minutes ago, DTubeMan said: Anybody know if the overhead cooling seen in DucknDive's picture needs any adjustment on the internals of the valvecover? It just bolts up but whether it does anything is up for debate. Really the feed needs to be taken from the oil gallery under the ignition pick up... Or so the argument goes. 4 Quote
Duckndive Posted February 2 Posted February 2 11 hours ago, DTubeMan said: Anybody know if the overhead cooling seen in DucknDive's picture needs any adjustment on the internals of the valvecover? Was on engine when i got it The pipe from cam cover has Since Removed and just has the cam links on it........ The Feed from cam cover is a leak and pointless "take a cam cover off and look" opens box of frogs 2 Quote
DTubeMan Posted February 2 Posted February 2 Great! Appreciate your guys input and feedback! I had a look at the internals of the cam cover and noticed you’d be taking the left over oil pressure after dumping into the oil cooling pockets above the cylinders. And figured there wouldn’t be much pressure left. The way you’ve got it hooked up now @Duckndivei imagine it’s just for looks, as the Orient cylinder doesn’t have oil galleys, or does it? So the lines probably don’t have any oil going through them? @spiderpigthats a good one actually, hadn’t thought about it, but that’s gotta have the higher oil pressure needed! Gonna go this route I think, much appreciated! For anyone curious, I’m making a sleeper gsx1100F 1340cc. With the big Krauser suitcases and everything 2 Quote
Captain Chaos Posted February 2 Posted February 2 49 minutes ago, DTubeMan said: For anyone curious, I’m making a sleeper gsx1100F 1340cc. With the big Krauser suitcases and everything Now I'm curious. Pics? 1 Quote
DTubeMan Posted February 2 Posted February 2 It’s got a gsxR rear wheel, still getting the front wheel fitted with the larger brake rotors. And a techserfu full titanium exhaust. Some other goodies on the way. I’ll keep you guys posted Quote
McLean Racing Posted February 2 Posted February 2 On the basis of what can realistically fit. Based on the bore dimensions you could take one out to 89mm with new liners which takes it out to somewhere near 1470cc. It would need to be for race use only though 1 Quote
DTubeMan Posted February 3 Posted February 3 Sheesh! 89mm Bore, how thin is the liner gonna be then? Quote
Duckndive Posted February 3 Posted February 3 2 hours ago, DTubeMan said: Sheesh! 89mm Bore, how thin is the liner gonna be then? He said "Based on the bore dimensions you could take one out to 89mm with new liners which takes it out to somewhere near 1470 cc. It would need to be for race use only though Quote
Gixer1460 Posted February 3 Posted February 3 15 hours ago, McLean Racing said: On the basis of what can realistically fit. Based on the bore dimensions you could take one out to 89mm with new liners which takes it out to somewhere near 1470cc. It would need to be for race use only though 'If' this was possible . . . . not sayin' it isn't, but If possible, why didn't any US performance shop or supplier ever recommend, or stock or supply such a kit? I know that the GSXR was used long after production ceased in 'grudge / street ' racing where any advantage gained can make big money, but never heard of '1500' oil cooled engines without stroking the cranks? As an example, using 89mm bore & my crank, would give me a 1600cc and I could still go +1 on the stroke ! ! ! Entertaining but highly impractical . . . . . . . my turbo isn't big enough LOL's 2 Quote
Duckndive Posted February 3 Posted February 3 (edited) 2 hours ago, Gixer1460 said: 'If' this was possible . . . . not sayin' it isn't, but If possible, why didn't any US performance shop or supplier ever recommend, or stock or supply such a kit? I know that the GSXR was used long after production ceased in 'grudge / street ' racing where any advantage gained can make big money, but never heard of '1500' oil cooled engines without stroking the cranks? As an example, using 89mm bore & my crank, would give me a 1600cc and I could still go +1 on the stroke ! ! ! Entertaining but highly impractical . . . . . . . my turbo isn't big enough LOL's most of the big bore kits go up in 1 mm increments 1340 is 85mm / 7mm oversize 89mm / 11mm oversize on a stock crank would be 89.59 Cubic in or 1500cc ..a big jump bore & liner wise Not measured my OE block but even with new liners that may give minimal support for the liners .. so possibly given the limited market they never bothered or considered it but did not want to have a larger block made to facilitate it Johns GSX1400 outlaw uses a custom block as does your stroker motor ... Remember in the land of the free "pre thump" KISS rules Edit the crankcases are the limiting factor going bigger than 85 / 86mm Over My cases with a 1340 overbore So if liner o/d increased incrementally with bore per mm stud retention area would get weaker The Stock case 1640 cc Air Cooled Pro Stock Motors suffer from this hence V&H doing billet cases Stroking the Crank as you did is the better option maybe Edited February 3 by Duckndive 1 Quote
Gixer1460 Posted February 3 Posted February 3 Which is essentially the point, whilst liners 'could' be made to fit the blocks, the crankcases would burst apart! Its a combination that wouldn't work so doesn't fit with the OP question! Just checked - i've still got +1mm of overbore + 1mm of overstroke to go . . . . . mind you it gets expensive ! 2 Quote
DTubeMan Posted February 4 Posted February 4 Out of curiosity @Duckndive, what OD size is your sleeve and what size was the cylinder bored out to? I went to my machinist today and he asked me what size the cylinders were to be bored to and I thought it would just be the size of the od of the sleeve. He proceeded to explain that the sleeve could potentially be "swimming" in the cilinder, and not be able to lose the energy. This makes sense of course as the sleeve and cylinder are different metals (expansion rates and what not). I will be going for the 85mm oversize as well. First parts ordered today. Quote
Duckndive Posted February 4 Posted February 4 15 hours ago, DTubeMan said: Out of curiosity @Duckndive, what OD size is your sleeve and what size was the cylinder bored out to ? The Engine is 1340cc "85mm Bore as bought from a friend all i,ve done is removed a base spacer the block uses SU3550SP Liners specs are here https://gsxrzone.com/sleeves.html 2 Quote
McLean Racing Posted February 4 Posted February 4 On 2/3/2025 at 11:53 AM, Gixer1460 said: 'If' this was possible . . . . not sayin' it isn't, but If possible, why didn't any US performance shop or supplier ever recommend, or stock or supply such a kit? I know that the GSXR was used long after production ceased in 'grudge / street ' racing where any advantage gained can make big money, but never heard of '1500' oil cooled engines without stroking the cranks? As an example, using 89mm bore & my crank, would give me a 1600cc and I could still go +1 on the stroke ! ! ! Entertaining but highly impractical . . . . . . . my turbo isn't big enough LOL's There where some grudge bikes that were that big, most of them needing epoxy work to the cases or welding and machining, I know of 2 of such motors that made there way to the UK and i believe are still here. Quote
Duckndive Posted February 4 Posted February 4 (edited) 1 hour ago, McLean Racing said: There where some grudge bikes that were that big, most of them needing epoxy work to the cases or welding and machining, I know of 2 of such motors that made there way to the UK and i believe are still here. Would one have been Dale's old gas motor in the slingshot frame from a about 10 years back Dale may have just been the jockey Edited February 4 by Duckndive Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.