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Nik

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Posts posted by Nik

    1200 Bandit running rough, carb problems

    in Oil Cooled

    Posted · Edited by Nik

    You say it's been dynojetted. Does that mean that your emulsion tubes and needles are Dynojet? My experience with Dynojet is that they are crap. Their parts are made from cheese, and wear severely. It could be the cause of your problems. 

    jetting advice please?

    in Oil Cooled

    Posted

    My setup; Powerscreen engine,  with R cams, 4-1 Yoshi, BST36 carbs with two vacuum holes in the throttles, dual V&H filters, 155 mains, up one or two steps on pilot jets, lowered the needle one groove. Ran very well with nice and even torque curve. The filters/airbox make a big difference on draw. My V&H filters are relatively worn/free flowing. If you use airbox or well-oiled foam filters, you need smaller main jet (my gut feeling says 135-145). Good luck!

    • Like 1

    mash up engine timing

    in Oil Cooled

    Posted

    It could be that the arrows and numbers on the cam sprockets (which I presume you used when you installed the cams) are on different locations on the g and f cams, and you'd have to set cam timing manually. I don't know for sure, but it would explain what happened. Do you have both pairs of sprockets, so you can compare?

    Cylinder head/oil temp access point

    in Oil Cooled

    Posted · Edited by Nik

    Tapping into the oil cooling system for cam oil supply is useful on engines with e.g. big block cylinders (where the cylinder block internal oil passages are non-existent, or restricted), but otherwise there is no reason for having them. In theory, you actually lower the oil pressure when connecting the cooling system with the oiling system. How much diffference it makes in real life is debatable (since people obviously use them, without major disasters reported), but it certainly doesn't make oiling better. 

    suggested rev limit for a bit of a bitsa build?

    in Oil Cooled

    Posted · Edited by Nik

    I agree with 1460, the 1100f cams will make your engine peak at relatively low rpm, e.g. 9,000 rpm, and any 1100 CDI would achieve that. Stay away from the 750 CDIs, since their rev limit is higher, and a missed gear could make your engine over rev (been there, done that, splitting an 1127 GSXR 1100 crank because of a 750 CDI on an 1127). 

    Cylinder head/oil temp access point

    in Oil Cooled

    Posted

    I am not sure what APE's top end oiler kits look like but make sure you do not fit a kit connecting the cooling channels with the pressure/oiling channels, i.e. a kit that draws oil from the cylinder head cover to the cam shaft ends. The only proper source of additional oil supply to the cams is the oil gallery underneath the crank. 

    Peculiar head problem to fix

    in Oil Cooled

    Posted · Edited by Nik

    I've had several brass tubes falling out on their own, when turning the head upside down. On other heads, they've been stuck like crazy. I guess the tolerances on the machining and/or brass tube bulge varies quite a bit. Heat and som mild force and you'll be fine.

    Whats a dot??

    in Oil Cooled

    Posted

    2 minutes ago, Lachie04 said:

    Recently did a rebuild and my guy cc'd the head  the DOT head volume was 22.5 ml and the 750 piston crown was @4.31 ml (probably within a whisker of a 1127 piston would suspect) at least give you a ball park to look at

    There is a few sites that have calculators for CR some are different and come out with all sorts of different values but this one looks reasonable unless you want to work it all out yourself

    http://www.csgnetwork.com/compcalc.html

    Great info! (y)

    Carburettors

    in Oil Cooled

    Posted

    13 hours ago, Rene EFE said:

    No. If anything, a bike needs dyno-time. Jet kits are a bodge in a nice package.

    I run a powerscreen motor with dual K/N's and I'm on a 155 mains. According to anyone and anything, it shouldn't work because it's WAY too big. Dynotested; 135Bhp (y) 

    I used to run a similar setup, Powerscreen engine,  with R cams, 4-1 Yoshi, BST36 carbs with two vacuum holes in the throttles, dual V&H filters, 155 mains, up one or two steps on pilot jets, lowered the needle one groove. Ran very well with nice and even torque curve. 

    • Like 3

    Dialling in cams

    in Oil Cooled

    Posted · Edited by Nik

    To OP, dialling in cams may seem complicated and a bit scary, but it isn't. If you're patient and somewhat sober, and take it slowly step by step, you'll find that it's no big deal. Making up your mind on timing, overlap etc is another thing ... :) 

    • Like 1

    GSX 1200

    in Oil Cooled

    Posted

    22 hours ago, bigbang said:

    A bit of offtopic, if I may. Nik, I noticed you have a Vespa 150. Can you put a photo of it? I have one too (1962, I think) waiting to get fixed. My father bought it new, and it doesn't work for many, many years... Maybe I'll get inspired by yours and start to work on it.

    PM sent, so the rest of you guys don't get exposed to non-Suzuki photos. :)

    • Like 1

    GSX 1200

    in Oil Cooled

    Posted

    4 hours ago, bigbang said:

    Yes, these are not very common, at least here in Portugal. I knew the Bandit1200, not this one.

    Now I have to get it serviced, because it was stored without working for a long time.

    A bit of offtopic, if I may. Nik, I noticed you have a Vespa 150. Can you put a photo of it? I have one too (1962, I think) waiting to get fixed. My father bought it new, and it doesn't work for many, many years... Maybe I'll get inspired by yours and start to work on it.

    ☺ I'll see what I can find. 

    GSX 1200

    in Oil Cooled

    Posted · Edited by Nik

    14 hours ago, bigbang said:

    Hello everyone

     I just bought a '00 GSX 1200, I don't know much about this model but it was a good deal so I just bought it...

    Now I'm doing some research and I have a (stupid?...) question about it. I found this forum so I thought I could get some help.

    The sides of the engine are black (like in the GSX750), not polished like it was suposed to be in the 1200... How do I know that a previous owner didn't have a problem with the original engine and got a 750 cc to replace it? Is there anything on the outside of the engine that can confirm that it is the 1156 cc?

    I know the way it goes should be enough to clarify the differences between engines, but I don't really have something to compare with, since I had a XJ600 many years ago and this one, beeing 750 or 1200, goes waaay faster...

    Regards

    If your engine model no. (right-hand side, above the clutch cover) begins with a "V", the engine is 1100-1200 cc, i.e. 1127 or 1157 cc in your case.

    Hard welded rockers. Who does'em besides APE

    in Oil Cooled

    Posted

    I used to work a lot in the U.S. and often spent my spare time searching for car and motorcycle parts, wherever I was. When I ran into Web cams (somewhere close to L.A.), I had them do a set of rocker arms for my oil boilers. I don't remember the exact cost, but it was a lot cheaper than APE (where I used to purchase hard-welded rocker arms). It's probably 10 years ago by now, but it could be worth a try.  

    • Like 1
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