you guys have me looking at this fueling plate and pump. which pump did you go with the race or hp? And how r things running since the install?

 

A friend of mine, who has a 2017 Trike, 107 had the sumping issue, they put it on the dyno to tune and it sumped but was sumping before that as well but he didn't realize what was happening.
Any way, to make a long story short, the local HD dealer took it in under warranty and installed the plate behind the pump and they put it back on the dyno yesterday and no problems. So apparently the plate is the fix for the issue. I'll report back after our ride today.

 

I installed the RS468 cam in mine a few months ago, and recently just had Zippers bore my cylinders to 117 with the Carrillo lower comp flat top pistons.
I finished the install and had dyno tuned a few weeks ago, and no issues, sum or otherwise. Hoping wont.
Still on OEM oil pump, but considering using latest HD pump with new seal. I ride a lot and no sense of having a 117 if I don't get on it.

 

I would really like to hear what happens with this particular bike. After so many oil pump revisions ( I believe 4) and the new seal, it would be a damn good thing if it were this simple of a fix. I guess some mileage will tell.
I've tried to look at the differences between the TC and M8 that may have any effect on sumping.
My temps went down with my aftermarket exhaust. Also a god tune is necessary to keep temps okay and performance optimized.

 

I've had the Feuling race series in my 120 now for a few months and 6500+ miles. Ran in every conceivable manner, low, high, up, down, sideways, 6300, high load, 2-up loaded, up hill will going 85 and accelerating, for hours on end.

It don't sump.

It fixed the sumping issue for me and mine did sump once prior to the install. No other changes to the engine were made after the Feuling stuff went in.

IMO, what you end up with is the $ cost for the insurance it won't do it, You have 4 choices as I see it from least desirable to most:

1. Leave it alone.
2. Install the latest HD pump with new backing plate and o-ring
3. S&S (but we recently heard of one with 11 ounces of oil drained with this pump)
4. Feuling (more expensive, but have not heard a single sumping report)

 

I've had the fueling pump and the vent mod for months now. My sumping issue has not returned.


There was a question as to whether or not my engine was hurt as I sumped every time I rode it. See the attach pic of the dyno screen from this AM. I'd say it's just fine...

 

So WTH all do you have in your motor? LOL

 

120 ci
ported heads
ported intake
64mm throttle body
complimenting cam
custom header

 

Can you explain what the vent mod is? Thanks

 

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