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Buell Forum » 1125R Superbike Board » Archive through May 19, 2021 » Unknown Pipe « Previous Next »

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Coastrambler
Posted on Wednesday, December 09, 2020 - 02:05 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Found this pipe on 2009 motor with no corresponding item on 2010 motor. Not even a sign of a port on '10 motor. Anybody know what it is, or does? Wondering what to do.
Unknown pipe
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D_adams
Posted on Wednesday, December 09, 2020 - 02:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Part number Q0250-1AM

#20 in the pic





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Coastrambler
Posted on Thursday, December 10, 2020 - 01:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Dean.

So I'm guessing I won't need to worry about not seeing this pipe on new motor.
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Xbuell12s
Posted on Thursday, December 10, 2020 - 07:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That pipe isn't on the 2010 motors. I don't remember what it does, I'm sure someone will chime in.
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651lance
Posted on Thursday, December 10, 2020 - 08:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If I remember correctly it supplies vacuum to the vacuum side of the clutch diaphragm..
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651lance
Posted on Thursday, December 10, 2020 - 08:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Looks like the 2010 low pressure line comes in on the front side on the engine now



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Coastrambler
Posted on Friday, December 11, 2020 - 01:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Great. So I'll need to get a vacuum line in that configuration.
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Shoggin
Posted on Friday, December 11, 2020 - 11:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

https://hpsperformanceproducts.com/products/hps-3- 8-inch-black-high-temp-silicone-vacuum-hose-tubing -coolant-overflow-tube?variant=18515071172705&curr ency=USD&utm_medium=product_sync&utm_source=google &utm_content=sag_organic&utm_campaign=sag_organic& utm_campaign=gs-2019-11-15&utm_source=google&utm_m edium=smart_campaign&gclid=Cj0KCQiAzsz-BRCCARIsANo tFgPzx1Q95ir0P5jJmj4cq9fbxGuVYRRbyB_w1mB8fxAc1XX8Y EhRi4saArSSEALw_wcB
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Coastrambler
Posted on Saturday, December 12, 2020 - 01:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

More. Took a look again, now that I know where to look. Vacuum line is already there on '10 motor. Whatever my first line is there is no sign of. Will be better able to track it when I drop the motor out.
It's like 45F in my garage, so I do one small task and call it a day, no hurry.
Am ready to pull swingarm pin, rear and mid mount bolts. That should let motor down. K brackets are disconnected.
Am beginning to think I may have to start an "Adventures in Motor Swapping" thread.
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Alex
Posted on Saturday, December 12, 2020 - 10:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

This line has never been a vacuum line for the slip assist clutch. The vacuum line for the clutch runs down from the manifold - which is the only place that makes sense if You want to reduce clutch pressure based on engine load / engine breaking. The line in question is a vent line between the rear cylinder head and the oil sump chest. As far as I remember it was found to be unnecessary and skipped for later production years. We disconnected this line on all our race engines where it was installed.
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Coastrambler
Posted on Wednesday, December 16, 2020 - 01:37 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Found another pipe barbette that isn't on '09 motor. It's on intake manifold, right above vacuum hose that goes to clutch assist. I suppose I could move intake manifolds from '09 to '10 motor. Would prefer not to.
'10 Intake Manifold
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Coastrambler
Posted on Thursday, December 17, 2020 - 01:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It's Manifold Absolute Pressure is what this is, I believe. The pipe barbette is totally different from '09 setup. Connections at MAP Sensor are different too. Feel more like wire than hose. Ideas?
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Shoggin
Posted on Thursday, December 17, 2020 - 12:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Looks like a fitting for poly or nylon 1/4" hose. Much harder than rubber. I have a ton at work if you can't find it.

The water line for a refrigerator ice maker is the same stuff.
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Coastrambler
Posted on Friday, December 18, 2020 - 01:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My issue is the fitting on '09 manifold is very different from the one on the '10, The '10 actually looks to be what's in the Service Manual. Am attaching a photo of setup from '09. I can get the hose no problem, thanks.
2009 Intake Trunk

Am wondering if it's just much smaller hose.
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