He also has a Compufire R/R
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He also has a Compufire R/R
G
Guest
Guest
Did you build this motor? Have you ever had it apart to make sure it is a 1327cc pistons the 1260 is a popular size for the stock block
G
Guest
Guest
That is just the charging system correct? I don't use a charging system on the bike I want a bigger motor for
I was planing on using a Dyna 2000 so I can program my own ign. map
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S
Samsonite
Guest
Yes i have run it on the street....It does tend to run hot and needs an oil cooler but it is not unrideable.
I bought it as a "1327", ill find out for sure in about a week when my top end gaskets arrive.
G
Guest
Guest
Forged 10.5:1 pistons, sleeves, and MLS steel head gasket $899.00 Send us your block and top case and we will do all necessary machine work for $309.00, ready to assemble.
We are keeping the CR low so it will electric start. We can do a 13.5:1 race only setup, like the pistons in the photo, if desired.
We are keeping the CR low so it will electric start. We can do a 13.5:1 race only setup, like the pistons in the photo, if desired.
I have -86 GS 1150 street bike with -91 1100 GSXR sleeves in 1150 block with 81mm Hayabusa pistons. Cr is 9.7, engine is supercharged ( 0.5 bar boost), fuel = E85, Bandit 600 oil cooler, oil thermostat & top end oiler.
No heat problems, no smoking issues, starts easy, no oil leaks, nice power.
4
4cyl h2
Guest
Jay are the pistons flat topped dished or any dome at all? picture of them??
gs11ezrydr
Forum Mentor
I don't know of every one else's luck but I have had some good luck with the 1260 motors, Just seems to rev higher, quicker throttle response, and they live forever, and seem to fit the stock combustion chambers just right without modifying them also. Along with the 66mm stroke just seem to work as well matched up setup. Beside being as large as you can go with a stock block with the sleeves as far as I remember. I'm sure I'll get some grief from this post but just my noted results, My next street motor is going to be a low compression 1260 with maybe .370 cams don't know if I want the .420 cams for the street. when I redo my 1168. may stick with the .348 cams in the 1260 want that low end mid range grunt. 
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Is that combo good for over 100 lb ft of torque, Ray?
G
Guest
Guest
The question I want answered is for a street bike what else do I need to do to my 1150 to have a reliable 1327cc engine.
Except...
adjustable cams
manual cam chain tensioner
slotted sprockets
750 oil pump gears
And .... clutch what?
I know head work will make this a fire breathing monster but I do like the idea of a torque monster as Rapidray speaks about.
Except...
adjustable cams
manual cam chain tensioner
slotted sprockets
750 oil pump gears
And .... clutch what?
I know head work will make this a fire breathing monster but I do like the idea of a torque monster as Rapidray speaks about.
Scardy Kat ; call Ray.
I'm wondering if it is the 20 mm piston pins.
Add to that case & cylinder studs, a top end oiler & a GSXR oil cooler & you are good.
Ray.
What kind of power could a 1327 make with stock, degreed cams, a full exhaust, RS36 carbs and pods, and a decent valve job?
R
Red1100E
Guest
Comp
Comp
Now someone needs to offer a nice aggressive CNC port job that wont cost you an arm and a leg, I wont hold my breath on that one.
Comp
Now someone needs to offer a nice aggressive CNC port job that wont cost you an arm and a leg, I wont hold my breath on that one.
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Some of us don't NEED cnc machines to do our porting. I started doing head work in my Dad's shop in 1975 when I was 14. Grew up in a race shop & been porting by hand for almost 40 years now. Trust me, I KNOW what works.
Ray.
Probably 145-155 but the torque would be even better than the hp! Just doing a street port on the head would be good for another 10-15.
Ray.
Holy crap. OK, maybe I should reconsider the 1229 idea ...