Harley-Davidson Master Technician with over 15 years experience. I frequently build big cube engines & carry out performance upgrades including cam kits, stage kits from Screamin Eagle, S&S & Alpha Performance Engines & dyno tuning, so you can expect to see lots of videos of high performance Harley-Davidson motorcycles. I am very passionate about what I do, I love the science behind an engine & enjoy learning & sharing knowledge as much as possible. As a Harley-Davidson Master Tech, I aim to clear up any questions, myths, do's, don'ts & anything else that you may or may not know along with hints & tips.
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I didn’t know that the max crank runout for the Screaming Eagle cam plate / oil pum is 12 thousands. One of the reasons I didn’t install any billet cam plate and oil pump yet is that I’m afraid of my stock flywheel start developing some runout above the max tolerance required by Feuling and S&S which is 5 thousands. I thought it was the same for the screaming eagle combo. Thanks for the info.
Hi Tommy, you linked this video on another video that you remove the cat in this pipe, but i cant see here in the video you removing the cat and how you did it
Harley-Davidson SE pump and cam plate are top of the line. I have it in my 135 road glide. It comes with it and I wouldn't have anything else in there. Thanks for all your support, help and getting us the best information for making are Harley-Davidson motorcycle more reliable. 👍🤟 mate
I got that SE setup going in my 124. The post 2020oem isn’t keeping up on the scavenging crank case pressure on my bike. Zero oil burning. Lots of crank case pressure tho. No sumping. Hoping won’t need new pistons of jugs Ohh ! Monday bike goes in for SS crank , changing to 480MT cam. And moving to 64mm TB/Intake The 482 setup is cool. Accelerates violently fast after 4k. But I ride 3-5k range .. rarely go past there so I’m not even using the horsepower whych don’t come into play til 5250 anyway *I asked about the compression ratio since 482 needs much compression to work. I asked how they bumped the compression and said they just ran the 11:1 SS 124 kit as is no thinner gaskets .. it runs well. Idk how tf it even working at 11:1
Great video, excellent info Tommy, as always. What year do you think was the best for the twin cam as a mate is looking at a 2012, should he look at a later one ? Thanks for taking the time to share. Cheers mate
Always good to see these informative videos mate I do agree with your opinion on plates, I have always liked the screamin eagle pump and plate combos for both m8 and twin cam platforms, SE preferred then feuling, runout tolerances are a bit more forgiving, the bushings are secured with splines rather than a press fit and I am yet to see one fail. In the later m8's that have the updated 8 lobe scavenge gerotor setup I have seen no issues with the stock cam plate and pump combo and do a good job. on the earlier twin cams with spring tensioners I find both feuling and screamin eagle cam plate conversion kits are competitively priced which is nice if one is unavailable due to being on backorder.
@DansGarageAndPerformance 💯 mate! Spot on! I think because the aftermarket are quick to come out with an update people are drawn to it more easier 🤔 When SE come out with an option it's like the customer base rejects it for some reason?
Great video Tom. When I get my new road king, the orange plate is what I'm going with man.... My 04 king I have now has a screamin eagle plate in it....ya the dinosaur twin cam that has bearings for cam carriers...lol
Great video to everyone wondering about cam plates. I always knew Screamin Eagle plates were the best but now you have explained to the rest and hope it helps a lot of people since they are quick to jump to Aftermarket as in Fueling and S&S in cam plates for some reason
It’s just unacceptable that Harley doesn’t deliver it already welded cuz’ it’s not that hard to do it before assembling. For us as consumers, to get it welded we have to disassemble the entire engine, what costs a lot of money, to have a 20 dollar weld. It’s not about saving money at the assembly line cuz nobody would complain about paying 100 dollars more for a bike that comes with a welded and really reliable crank from the factory.
G'day Tommy - What's your opinion on late model M8s using oil? If Harley suggest 1 litre oil use is 'normal' for 2500Ks travelling, where is that oil going in your opinion? No other cars, bikes, or marine vessels use that much oil unless there's a serious problem. Thanks for any insights.
@paulypaulypauly8011 The early model M8s (2017 to 2019) had some Oil consumption issues that were related to 'Sumping'. This was due to the lack of oil scavenging from the 1st few generation oil pumps. The oil was showing low on the dipstick because the oil wasn't being scavenged from the crankcase properly. Some did it worse than others. This led to some folks topping up the oil & essentially over filling the bike. On the other hand there was a run of a few bikes a few years ago where ALL the piston rings were lined up from factory leading to excessive oil use. These were fixed under warranty as far as know. I personally did a out 5 or 6 bikes with this issue. Harley have to give some sort of 'normal usage' to make sure they are covering many different factors and riding conditions. I personally think that 1ltr for 2500km is a bit high but then again, I'm not the manufacturer. I'm sure they have their reasons. Most likely so they can monitor customers bikes for research & development reasons so they can rectify the issue/s. It's probably set that high so it proves that there is a problem with the bike so it can fixed under warranty / good will etc. In the case of a bike using that much oil on 2500km it would have to be either sumping or buring it as its passing the rings into the combustion chamer.
@@MasterTechMiller thanks for the swift reply. I’m referring to late model bikes (the ones with the updated oil pumps). Specifically, mine is a 2023 flhtk, and it uses oil like nothing I’ve had before. It’s only about 300 mls per 2500 ks, but that would add up to nearly a liter between services. I cannot accept that a modern 114 engine should be drinking oil like that without there being an issue. Do you think it’s possible they were lining up the rings in the 2023 bikes, or are there any other potential reasons you can think of? We went to ride to Perth from Victoria, but I’ll be fucked if I’m going to carry 3 kgs of oil for the return trip!
My local Harley shop dyno tuned my stage 2 with a zippers 468 cam.. I noticed a lot of 14.4 afr in that block that encompasses idle and cruising, sound right ?
I have a common guy question. I have a 2020 RGS 114 4k and it has started making a chirping sound when hot at idle. Bike is bone stock. I’ve seen videos of other people having the same issue but no answer as to what it is. Any idea?
@geraldgoodiii6993 The Screamin Eagle Perfect fit pushrods are VERY strong! Stronger than the Screamin Eagle adjustable pushrods, however there are some trade offs. For example, when building a very high performance high rpm engine with large lift & duration on the cam you'll want a very strong pushrod, so you'll probably want a SE Pefect fit set. Keeping in mind that most engines of that nature have had cylinders that are decked down to achieve 0 deck height & then the heads have normally been faced down to reduce chamber volume & increase comp ratio which then brings the perfect fit pushrods closer to being too long & not correctly loading the lifter. They are definitely not junk & I like use in the old twin cam stage kits that come with them. The SE Adjustable ones are a great compromise.
@@MasterTechMilleri wonder if the SE ones are in my bike. FYI parts were ordered for my bike .. I’m the dude who had the 482 cam. Doing SS flywheel and changing to 480MT cam And 64mm intake etc and that SE oil pump the OEM one not keeping up on that crankcase pressure on the scavenging side .. 124 turning higher rpms bc of that 482 cam .. blow by like mad but NO oil burn up even after a 5k mile trip ripping the fuck outta it and it was hot af out. Thank u Ultracool lol I’ll let ya know how it turns out I’m tired of the horsepower cam too much work lol
Hi Matt, I ride a 07" heritage. correct me if I'm wrong, but will the 480 MT cam in a 103" with heritage frame give me easier burnouts with the higher torque at lower RPMs. ?
The CR485 will tick your boxes. Although it's more of a top end HP Cam the huge increase you'll see over stock from the bottom end & mid range is very impressive. You'll be utilising your current pipe too which is a win
Hi Tommy great video I have S&S 475 cam installed with S&S lifters etc and was going to fit the S&S pump and plate but on you recommendation I will definitely be going for the SE cam plate and pump and are currently waiting to hear back from my Harley shop on getting this upgrade fitted. So thank you for your input much appreciated. Without doubt my favourite Harley tech to watch. 👍🏻
Hey mate! You may have to do it on a computer rather than phone? I'm not totally sure. When I see it on a laptop it has a button to click that says 'Join' beside the subscribe button.
On my third Harley since 1988 with an fj1200 between the first 2. I have a '99 TC88 FXDL now that I still think of as new, '95 evo FXDL before this one. Got a factory workshop manual and invested in the tools, mostly I go with the manual but the torque sequence spec for exhaust flange bolts is wrong so I don't assume. Cross reference the metric spec and double check the first check. Everyone is capable of making a mistake, it's just the way things are. Thanks for putting up relevant interesting content.
