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Author Topic: M8 sumpping problems stage 4 kit  (Read 6615 times)

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Skanman77

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M8 sumpping problems stage 4 kit
« on: November 25, 2017, 03:24:57 PM »

Hello new the the forum. I just purchased a 2017 CVO SG and I am now doing the stage 4 kit. I have read the service bulletin 1450. I asked my dealer about the oil pump and wet sumpping issue. The bulletin recommends upgrading the oil pump while putting the kit on. Does any one have any experience with this?
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Skanman77

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Re: M8 sumpping problems stage 4 kit
« Reply #1 on: November 25, 2017, 03:34:21 PM »

Hello new the the forum. I just purchased a 2017 CVO SG and I am now doing the stage 4 kit. I have read the service bulletin 1450. I asked my dealer about the oil pump and wet sumpping issue. The bulletin recommends upgrading the oil pump while putting the kit on. Does any one have any experience with this?
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2002FXDWG3

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Re: M8 sumpping problems stage 4 kit
« Reply #2 on: November 25, 2017, 04:17:58 PM »

Lots of info on the forum.  You definitely want to verify you get the upgraded oil pump.
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Skanman77

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Re: M8 sumpping problems stage 4 kit
« Reply #3 on: November 25, 2017, 05:11:31 PM »

Okay. Is that a pretty solid fix? The dealer is pretty good so I know I can verify the fix but I just don’t know enough about the M8 to feel good about it.
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2002FXDWG3

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Re: M8 sumpping problems stage 4 kit
« Reply #4 on: November 25, 2017, 06:16:12 PM »

Verdict is out.  I don't own one so I cannot comment further with first hand information.
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harleytacticalnut

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Re: M8 sumpping problems stage 4 kit
« Reply #5 on: November 27, 2017, 10:41:54 PM »

Stay away from Harley stage 4 upgrade for now. Save your money and wait. Trust me from first hand experience.
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spook120

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Re: M8 sumpping problems stage 4 kit
« Reply #6 on: November 28, 2017, 10:26:40 AM »

I am not sure I am comfortable with a blanket statement regarding stage 4 upgrades.  Mine runs well, does it without hassle or complaint.  I guess with any new technology there is a learning curve, might be steeper when it comes to HD stuff.  Anyway, my stage 4 kit with a stage 3 cam, TTS tune and Fullsac cores does everything I expect a bike to do without much drama.  Just my experience, yours might vary....
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pete s.

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Re: M8 sumpping problems stage 4 kit
« Reply #7 on: November 28, 2017, 08:14:58 PM »

I have 20,000 on mine and have had no problems. I did swap the cam out after about 1500 miles to a T-man 238.
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zkriegel

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Re: M8 sumpping problems stage 4 kit
« Reply #8 on: November 29, 2017, 11:28:17 AM »

I did the Stage 4 with 498 cam, auto tune and full exhaust and they installed a new oil pump at install.  Ran great for the first 500-600.  And at the beginning of this month it sumped.  Had the dealer come pick it up and confirm.  I informed them there was a new pump he said I had the newest but would look into it.  Three days later he called to say I was right and that they were going to install the new oil pump.  A week after that I got a call and they said the installed the new oil pump and its still sumping.  They were going to call the factory and get back to me.  That was a week ago.
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harleytacticalnut

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Re: M8 sumpping problems stage 4 kit
« Reply #9 on: December 05, 2017, 09:46:00 PM »

Good luck bro. Been there done that. Get ready for a battle.
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ltank

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Re: M8 sumpping problems stage 4 kit
« Reply #10 on: December 06, 2017, 04:48:22 PM »

I ride with a S&S V124. Problem solved
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zkriegel

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Re: M8 sumpping problems stage 4 kit
« Reply #11 on: January 22, 2018, 11:33:01 AM »

Well mine sumped again this weekend.  Dealer is picking up Thursday.  We will see what they say is the problem this time.
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Heatwave

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Re: M8 sumpping problems stage 4 kit
« Reply #12 on: January 27, 2018, 10:24:16 AM »

What’s you’re engine build and when was your latest oil pump installed?
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zkriegel

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Re: M8 sumpping problems stage 4 kit
« Reply #13 on: January 29, 2018, 12:56:56 PM »

I did the Stage 4 with 498 cam, auto tune and full exhaust.  I have the latest revision oil pump.  Dealer just called and said they couldn't replicate the problem and had the factory rep out last week.  Their recommendation was to drive it without getting on it.  Lol because that is exactly why I paid $7k for a stage 4 kit, to ride it as if it was stock.
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2002FXDWG3

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Re: M8 sumpping problems stage 4 kit
« Reply #14 on: January 29, 2018, 01:47:14 PM »

Of course they can't.  I'd bet my left nut they haven't even ridden it.  All part of the jerk around they're going to put you through.

I'd ask them to put the bike on their Dyno (while you are present) and run it at speed under load for awhile.
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