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Just wondering if it is possible to bore an XS1100 to 1300? Never heard of that one before...
XS1300?
XS1300?
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From discussions on here, the biggest "off the shelf" big bore kit is 1196 cc. I think anything beyond that you need to get special pistons made... The guy probably doesn't know what hes talkin about.Originally posted by mstic2000 View Post
'79 XS11 F
Stock except K&N
'79 XS11 SF
Stock, no title.
'84 Chevy K-10 "Big Blue"
GM 350, Muncie SM465, NP208, GM 10 Bolt with 3.42gears turnin 31x10.5 Baja Claws
"What they do have is an implacable, unrelenting presence and movement that bespeaks massive power lurking behind paint and chrome. They don't wail like a screeching ninja, the don't rumble like a harley. They just growl like a spactic, stressed out badger waiting to rip your face off and eat your soul." Trainzz~RIP~ -
May be possible, but you would need new cylinder sleeves and custom pistons made.Nathan
KD9ARL
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1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters
Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner
In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.
Theodore RooseveltComment
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There have been two members that have done this.
Dan Hodges and one other (just can't recall who it was at the moment)
I'll try to find some of the posts if you're interested but they were years ago...
Here's a link to one of Dan's posts regarding the 1300...
Dan Hodges' 1300 project
Oh! there WAS a member called Viper who had an engine bored out to 1500.
The bike was called Thor.
I did a search but there wasn't a lot of info for that one...Last edited by Wildkat; 06-02-2012, 10:31 AM.81 SH Something Special
81 frame, 80 tank and side covers, 79 tail light and carbs, 78 engine, 750 final drive mod, Geezer rec/reg, 140 mains, LH wheels
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79 SF MEAUQABEAUXS
81SH Nor'eas tah (Old Red)
80 LG Black Magic
78 E Standard Practice
James 3:17
If I can make at least one person smile, or pee their pants a little, or maybe spit out their drink; then my day is not wasted.
“Alis Volat Propriis”
Yamaha XS 1100 Classic
For those on FBComment
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Seems to me the cylinder walls would be so thin that it would overheat easily.Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.
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I know a machinist that would do whatever was necessary to do that for me, he said, "leave to me leave your amex platinum number and I'll get everything to you in about 6 months," then he asked how many donor engines do I have in case he destroys one or two in the process.(mind you he was laughing his head off while wondering about a project this large on a japanese bike from '79) His forte is racing engines but this was beyond his comprehension and my cash flow.(No Drag Bike For Rooster)
Even a blind monkey gets the odd banana.
1979 XS 1100 special (been down the PO trail and it was messy)Comment
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The 1196 is as large as you can go with the OEM sleeves; to go bigger, now you're talking about custom sleeves and boring the cylinders/cases for the larger spigots. So this means a complete engine teardown....Originally posted by BA80 View Post
As to the overheating issue, yes, this is real. How thin the sleeve gets really doesn't matter (other than having issues with dimensional stability), but you've only got a finite amount of cooling fin area, so that's why Dan recommended a oil cooler (really, it should be mandatory). Where you really need the fin area is on the head; I was looking at big-bore cylinders for my Sporty where you can get everything from a OEM-style aluminum cylinder/machined sleeve, Nicasil all-aluminum cylinders, or a all-cast-iron cylinder. The last choice sheds heat the poorest, but has superior dimensional stability and better longevity. They've found that Harley's shed about 60% of the heat out the head and HD heads have generous fin area, so these work well on bikes that don't block airflow over the motor. The XS head doesn't have that 'extra' fin area...Fast, Cheap, Reliable... Pick any two
'78E original owner - resto project
'78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
'82 XJ rebuild project
'80SG restified, red SOLD
'79F parts...
'81H more parts...
Other current bikes:
'93 XL1200 Anniversary Sportster 85RWHP
'86 XL883/1200 Chopper
'82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
Cage: '13 Mustang GT/CS with a few 'custom' touches
Yep, can't leave nuthin' alone...Comment
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Dan Hodges calculated a max of 1311 cc. That's more than what i calculated: 1295cc with a 77.5mm bore. That's because I measured the smallest wall thickness as 2.5mm between cylinders 1 and 2 and 2mm at the stud holes.
but for fasr riding an oil cooler will not suffice, you'll need oil cooled pistons (oil sprayed to the bottom of the pistons as some manufacturers do).XS1100 3X0 '82 restomod, 2H9 '78 chain drive racer, 3H3 '79 customized.
MV Agusta Brutale 910R '06.
Triumph 1200 Speed Trophy '91, Triumph 1200 '93.
Z1 '73 restomod, Z1A '74 yellow/green, KZ900 A4 '76 green.
Yamaha MT-09 Tracer '15 grey.
Kawasaki Z1300 DFI '84 modified, red.Comment
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