turbo charging my 1100

[jjrxs110078]

ok i want to turbocharge my xs1100 special its a 79 what im wondering is what is the best turbo to use i am a capable welder and fabricator but havent done anything with a turbo before would there be a problem with using a turbo set up from a seca turbo its a smaller engine but maybe i could use 2 turbo's as i have the dual exauhst set up or will the one turbo be enough any thoughts or advice on this. the bike is stock not looking to change to fuel injection or anything like that just need more power

[TopCatGr58]

Turbo?....that really BLOWS!

Hey JJRXS,

Just curious as to WHY you want or feel you need more power from your XS11?? These machines are not modern sport bikes, and the frames and tranny/drivetrain have a hard time keeping it all together with the stock engine!

There are a few turbos out there, I know of one that is used on the racetrack, he has to replace his driveshaft every so often cause it gets twisted!

Rigging a TURBO could be rather expensive, and a P.I.T.A. with having to fabricate the pipes, wastegate, etc.! A relatively easier and cheaper way would be to put a bigbore kit in it! They come in 2 flavors, 1179cc and 1196cc! Also, get the later year big valve heads, and then have the cams reground IF you want to go that far, along with porting/polishing the heads!

IF you're more adventurous, then rig up a chain drive, that will save you lots of HP from being lost in the driveshaft, also reduces the overall weight and would allow a wider rear tire!

But, if you do put the TURBO on, Please take lots of pictures, and post it for others to oogle over as well as providing the info in case someone else wants to go down that road!
T.C.

[pggg]

Well jjr, you're looking at beefing up the clutch and dismantling the engine to stitch up the lower gears for a start!! Bracing up the frame and all the handling mods too. A fatter rear tyre and a revised gearing ratio you can get from a chaindrive setup(a bit of a mission in itself ) - with stock shaftdrive gearing on your turboed beast, I'm guessing you'll be having to shut off the throttle mere seconds after opening it. The rev counter needle will be howling thru the 10,000 rev mark in a blink!! Especially with the Nitrous kit you'll of course be needing too. A rev limiter would have to be a wise addition. One of the guys here, Turbopete from England, is clued up on turbos, he built a 200mph+ turbo Busa

[jjrxs110078]

ok as to the reason i want to turbo my bike and not by a newer faster one from the start is easy to answer i like to take something i like and make it sick. i have no interest in owning a bike that i feel safe on or for that matter one that im not considered the underdog on. i prefer to have a mean bike because i made it that not cause i went to the store and bought it,i like the look on people's faces when i beat there $10000. bike and mine only cost $1250. so its kinda the poor kid can still compete syndrome and a total lack of concern for my safety life sucks so let it all hang out.oh and my bike was made in october of 1978 and so was i so thats like the kicker

[jjrxs110078]

turbocharging my 1100

ok im looking for information on adding a turbo to my xs1100 first ill describe the full intentions for the bike i am going to replace all bearings in the bike,i found quite a few places that supply them and i will replace the fork springs ,seals,add fork brace,progressive shocks in the rear if i can find enough info ill do a chain drive conversion,my brother is a machinist so ill have him do the head work port and polish and what ever else is required,carillo rods will make any set of rods you ask for in there custom shop so ill be going with them. i will get the wiseco 1196 big bore kit , i havent looked into the clutching yet but ill get what ever is the best avaailible solution,and the transmission will be fully rebuilt as i have a problem with jumping out of gear.as for cam i plan on keeping mild not looking to turn 15k rpm,s im looking to have a engine that has an excellent torque low end to me is important and for 3k rpm+ operation the tubo will take care of all my needs some people take 69 camaro's and make sick hotrods im gonna do it to my xs1100 i know that after priceing the parts out ive mentioned its about $2000 with out the turbo
but that to me is worth it this is my project bike ill probably never do 1 again but its the bike i want to do it on

ok now for the question yamaha 650 seca turbo is a turbocharged 650 yamaha bike i see the turbo's and full systems for sale all the time will 1 turbo be enough to feed my what will soon be 1196cc monster or should i get 2 of the systems and run a twin turbo set up ill not reuse most of the system just mainly the turbo's and waste gates i have the abilty and access to the equipment to build a nice set up i do not intend on just rigging something up it wont be a mongrel it will be done right and i know enough people with the right skills to make sure it comes out sweet i can do all the exhaust work engine work and any of the work i need to do and if i run into problems i have ppl to bail me out so i have the money the time and a great group of guys to help me out on this light to light machine im building its a know lose situation please let me know what you r thoughts are on my turbo situation

[GNEPIG]

.. not very good low end with a turbo, a turbo needs lots of RPMs to work it's best. most of what you will feel from light to light will be turbo lag.
i think you would like nitrous oxide much better, easy to set up and far less expensive, no lag- all boost and you wont have to remove a whole bunch of compression to use it.
.. it sounds like whatever you end up doing to it, it's going to be fun.

[pggg]

How I look at it, if it's a turbo, it's a turbo - so it'll fit. A seca 650 turbo would do the trick surely? Carrillo rods are expensive but XS11 rods are tough too. I rode a GSXR1240 with carillo rods ported and everything else it's the fastest bike I ever rode, and it had no turbo. Unless you're Nicky Haden there's no way in hell that power can be used riding on roads unless they're looong and straight and empty but on an XS11 it might work better. The tyres are gonna shred easy..

[TopCatGr58]

Hey again JJ,

The 1196 kit will give you a higher compression ratio, around 10.25:1 vs. stock 9.2:1. Turbo wants a lower stock compression like PGGG said, and kinda tough to do since pistons aren't available except for Wiseco Big Bore. I like GNEPIG's(Actual Bike Mechanic) idea of NITROUS better!! Also, keep your 4-2 exhaust, preferably with crosssover, better for low end!

If you do a search for Chain Drive, you'll find PGGGs threads, several, and you'll have the info you need to do the chain drive! You'll want to put wheelie bars on that thing!!

With the clutch, aside from possibly getting barnett plates, putting an extra steel plate in along with heavy duty springs is about all you can do to beef it up and help prevent slipping! There's a tech tip on the extra plate! There's also a tech tip about the TRANNY fix, having a machinist you may be able to modify the repair technique more precisely, or you may opt for NEW GEARS!?

As was said, the bottom end on these things is pretty tough, you probably don't need to put the extra $$ into those special rods, save it for the head work, and chain drive conversion!
T.C.

[pggg]

P.S. to get the full performance potential with hypersonic speeds 250kph plus, it'd be easier to rig the bike for chaindrive first, then turbo it. Other option is complete re-design of the motor to allow for reliable 12000 rev performance.

[yamarider]

One of the local bike wrenchers I frequent told me the story of when he put a "Git-Kit", as he called it, in his XS. The thing had so much power that he was able to ride wheelies down the street. He said it was the fastest bike in town, and when the cops were bored, they would chase him around town just for something to do. He stopped riding the thing after he blew the tranny right out of the frame while he was doing a burn-out.

TopCat, I wonder if this 1196 kit is the same thing as what he called Git-Kit??

[DiverRay]

Don't try and use the 650 turbo!! I've had a 650 turbo, and the system isn't set up to be put on an XS11.
I will be putting a SINGLE turbo on my '78 late summer or early winter. The 650 unit has a small housing, so it will not work.
PM me if you want to talk about some of the options available.
Ray

[turbopete]

Hey JJ.
Turbo is a fine idea so long as the bike can be off the road for a long while during the development process. Figure out how long you think it ill take then multiply that by three

Forget the SECA turbo it's far too small and will be in the choke zone almost right away. I would sugest working out your target horsepower and then adding 50% and size the turbo for that peak power output.
For your xs1100 you need a turbo designed for a 1600-2 litre car engine, like a small T3 or a T25/T28 size. I'd reccomend a T28 nissan take-off (Nissan sunny/pulsar turbo but not the ceramic compressor wheel version). They work great, can make up to 280hp and are quite strong too. Advantage there also is that I have a CAD drawing for the exhast plate you can use for either internal or external wastegate setup.
If you're using single-carb suck-through fuelling you must have a carbon seal on the turbo and that rules out the GT ballbearing series. Blow-through is far far better anyway but fuelling is a little more tricky (but not difficult).
Stock rods are very strong for their age, and the clutch seems quite beefy too (it's certainly large enough) I would make a rudimentay lockup clutch to hold the power levels or simply fit stronger springs and eat lots of spinach.
You'll need pistons I'd say unless only running 3-4psi boost. I'd find a decent supply of forged pistons that nearly fit and have a couple of sets machined up so you got spares. Or you could contact John Noonan at JE pistons and have some custom ones made if you have the money.

Good luck
Pete

[jjrxs110078]

alright thank you for the info it was as i expected the seca turbo is 2 small . and yes i plan on running only 4 or 6 psi boost i want the turbo to enhance my power not be the main source and i have no interest in 12k plus operation if my turbo hasnt spooled by 4000 rpm's i chose the wrong turbo ive been thinking about using a car turbo anyways they are designed for around the same power range im looking for 4-9000 rpm ive had my bike to 130mph and really it isnt safe even at that speed basicly i just want to get there even faster.yes nitrous is nice but the closest place to get a bottle filled is 30miles away so it isnt really a good way for me to go plus i want the power all the time nothing more embarassing than talking some smack only to find out you ve run out of nitrous. i will still purchase the seca turbo system as it will make a fine addition to my arctic cat powered go cart its funny my go cart i built for $200 dollars will smoke my bike in every way well thanks again for the info ill be checking around for nissan turbo's now lol