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wombat258

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Posts posted by wombat258

  1. 10 hours ago, Joseph said:

    Back on the 6 speed box topic, is the bore of this WC shaft, the same as the 1100 5 speed ?

    Yes. I have done this conversion. The star of the 1100W will come out with a suitable drift. I preferred to use the star to maintain the oil flow, and discounted using a bronze bush. 750W shaft is 10mm shorter than the 1100W shaft.

    You can only use the 1100W hub by counterboring enough to expose the shaft threads, and making a special stepped nut. Do not machine the splines at the back of the hub, as it will foul the basket springs! I have one of those hubs for a sidecar race engine floating around here somewhere. The 1052 hub is neater, and the springs are easier to tune for higher torque outputs.

    Sold one of these modified 750W gearboxes a few years ago. The buyer insisted it would fit in an SRAD, I said NO . . . I noticed it came back onto FB marketplace shortly afterwards :)

     

  2. Use a 1052 clutch hub, pressure plate and springs with the 750W input shaft and the 1100W basket, plates etc. You will have to remove the plug from the end of the hollow 750 shaft, and replace it with a support spider from a 1100W donor shaft. Easy hydraulic conversion. Will it last? Maybe if you do not flog it. Necessary? The 1100 engine has lots of torque, so no real necessity for a close range gearbox. And, no need for the Factory Pro star, just transfer ALL the 750 gearbox bits including drum, forks, selector shaft etc.

  3. On 2/14/2022 at 1:27 PM, djayedot said:

    Thanks man. I actually did some digging and you are correct- although I actually need the *upper* Panigale rad, but I will be running it in a lower position. Hope it can be made to fit, sure looks bigger in pics than I recalled! I will have to chop off and weld up the filler neck, of course.

     

    Question about the oil cooler conversion- Can I just make a bypass tube between the two banjo bolt oil cooler connections? Or must I go to a 600/750 oil pan and pickup that doesn't have them? Not sure if my header will clear one due to the different sump design...

    You can use the 1100W pan without oil cooler. Remove the internal restrictor that you can see through one of the oil cooler outlets, and plug the oil cooler ports. The oil cooler normally works on a partial oil flow.

  4. There are XG and XC series rings. They have different ring thickness. You may have ordered the wrong series. Measure the width of your old rings. XG are 1mm top, 1mm 2nd, 2mm oil. XC are 1mm/1.2mm/2.8mm. Rarer are XA at 0.8mm/0.8mm/1.5mm

    • Like 2
  5. ring-chart-1-png.148354

    Wiseco recommendations. Multiply bore in inches by the factor to give ring gap. 3" bore equals .015" top, .0165" second for street turbo. Go too tight and the rings can butt with heat and score bores or crack upper ring land. Loose is the way to go to avoid engine damage.

    • Like 1
  6. Piston to bore clearance is governed by alloy, bore size and application. Check JE's recommendations, but if OP's engine was quiet at running temps the clearance will be fine. I regularly see these scuff marks andthey do not hurt performance or reliability. I would only be concerned if there was scoring or damage to the ring pack. Of course, if a slealership tore it down you would be up for new pistons and a rebore.

    Revisiting the original post . . . top land crushing down on the ring is indicative of either excessive heat and temperature, or pistons contacting the head. Hopefully just a bit of excess carbon in the ring groove.

  7. Looks pretty normal skirt scuffing to me. Oil film might be breaking down at operating temperatures. Oil brand/grade/service intervals should be assessed.

    0.14mm (.0055") piston to bore is OK. Hone it and you will be fine.

    Check crank is running true and indexed. Could be the vibration problem if it was not welded.

  8. Port with restrictor is oil inlet. Directly opposite that is the oil drain with 2 tapped holes either side. The other 4 ports are the water ports - blank off 2 and run the water inlet/outlet either side of the centre section.

  9. 4 hours ago, MeanBean49 said:

    Id rather know the turbo has oil at the bearings and see a puff of smoke on startup than drain it all away and potentially have a dry spell.

    Personally I dont understand why anyone would use a pump whos volume changes with Rpm to scavenge an oil supply/drain that runs at an pretty much constant volume. Just doesnt make any logical sense

    Electric pumps are simple, heavy, unreliable (not designed for high oil temperatures), and draw a lot of current on a small charging system, especially if you go EFI. Mechanical is light, reliable if designed correctly,  draws no current, and has little parasitic drain on HP. Either way works in scavenging oil from the turbo, but have their own merits and limitations.

    • Like 2
  10. 11 hours ago, clivegto said:

    So the tank needs a breather as well as in and out pipes @wombat258

    Breather so you are not pulling a vacuum on the bearings and not influencing oil flow. Turbos are designed to have a free flow from the drain. In cases were that is not possible (turbo below sump), the sump allows for free drain, and the scavenge/breather setup removes the oil at atmospheric pressure. The added bonus is that on shutdown the surplus oil sits in the sump and cannot drain back into the turbo. I made mine from aluminium RHS with end caps, and crush spacers for the bolts to the turbo.

    • Like 1
  11. Large enough to de-aerate the oil, scavenge line low and small diameter (AN6 OK), breather line high. My tank is 2"x 3"x 6", bolted direct to the turbo body, and has an internal baffle. I have an intentional dip in the scavenge hose to keep oil near the pump so it primes readily. Scavenges well. Never smokes on start.

  12. I had to make an adaptor because the Daytona alternator is completely different to the W alternator. I came across a website that did the conversion for Bandit requiring only some offset drilling of the mounting holes . . . will see if I can track it down tonight (Oz time). I also suggest you log the running of the engine with Tunerstudio to see if you can get a better idea of what causes the engine to cut at high rpm. I found that the default injector voltage pulse correction is way too high (0.2?) and I ended up with a pulse correction of around 0.12. Your table may also be way out . . . AFR trends should help you work out which way to go. Regulator pressure should be 45psi. What regulator are you running (hopefully 1:1 pressure compensated).

  13. 11 hours ago, Gixer1460 said:

    True but there should only be ECU, ignition and fuel pump running presently so maybe 1A + 5A + 8A = 14A which is well within the Alt. capacity (above idle) I believe the GSF Alt. is 350+ watts (28A) output @ 5000 rpm.

    Plus wide band and charging battery 14A + 8A + 1A =23A. Pushing the 28A alternator to the limit. Had same problems with 1100W alternator at 21A draw. Worked OK at full noise, but extended idling or low rpm work and the regulator shut down due to heat overload. The Mosfet upgrade is less prone to heat buildup. I went for a Triumph alternator - 45 amps capacity, and charges strong at idle.

  14. Those alternators will only handle a maximum of 40 amps output, so it will pay for you to work out how much you are trying to pull out of the system with all your accessories running. A clamp style current meter is handy to work that out. The alternators do not do well at idle, and you can overload the regulator quickly if it is trying to excite the rotor to maximum capacity at low engine speeds.

  15. If no spark I would charge the battery, and retry for spark. If the voltage goes too low while cranking the ignition does not work. Change the plugs if they are fouled with carbon. If the headlights cannot be turned off pull the plugs on the globes to give you more current to start the engine. If you do get it started check that the alternator is charging. Simple test for ignition is to wiggle a screwdriver in the air gap between the pickup and rotor with the ignition on . . . it triggers the spark. If the ignition does not work you will have to get a manual, as suggested.

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