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Dave Perry
Dave Perry
@13086
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Joined: 12/26/2015 19:34
Topics: 0 / Replies: 9
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Oil for 1981 R100RS

If you are into synthetics, Amsoil MC 20-50 is also rated SG and Mobil 1 15-50 is recommended for flat tappet engines. So either would work fine.

7 years ago
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Main jet

I agree with your general comments on jetting. I think you meant to say 32 mm. A #135 main jet is fairly common for the later R100 airheads. A ca...

7 years ago
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Rod bearing destroyed after visit to repair shop

Your comment " Oil pressure switch not connected " doesn't help the situation but it helps point to the cause, either lack of oil or no pressure. See...

7 years ago
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1984 R100RT Right Carb Running Rich

Make sure the choke/enrichners are all the way off and replace the base gasket & O ring in the choke assembly. These are their own separate carb...

7 years ago
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R100 Oil Cooler Thermostat

My R100RT oil cooler doesn't get that hot either unless I'm in city traffic. My R1100s oil cooler worked the same way and I thought there was som...

7 years ago
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Low RPM Charging/Urban Riding

Motobins in the UK sell a electronic voltage regulator that allows the alternator to put out 14.2 volts. I used one on my R75 cafe build and it worked...

7 years ago
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A disturbing "clunk" coming from under my seat.

Pull back the rubber boat and have a look at your U joint and check the bolts connecting the driveshaft to the transmission. One or more could be loo...

7 years ago
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Bike will not rev over 3,000ish

It certainly sounds fuel related. An easy way to tell is from the position of the throttle. There are 3 main parts, idle circuit, needle & main ...

7 years ago
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I need a good engine mechanic

Contact your local Air Marshall and he can likely point you in the right direction. If the cylinder bores are good the rings & pushrod seals coul...

7 years ago
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