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CVO Technical => Milwaukee-Eight => Topic started by: DCFIREMANN on December 07, 2020, 03:53:12 PM
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Well I did pull the trigger on a new 2020 CVO Limited in Sand Dune. I only have 125 miles on the bike. But I am very impressed in the ride and the power. Never the less I am going to do a 131 upgrade. I'm not looking for big numbers. I am going to use the Harley SE heads that came in the kit. I am also going to use the 64mm throttle body that came in the kit. Along with the build will be a Fueling race oil pump, cam plate, Cycle Rama 480 cam and SE pushrods. I am going to run a D&D Billet Cat exhaust. The clutch is going to be a Rekluse with a billet basket and a Baker Compensator. I am also going to run a T-MAX tuner and the Harley Street Tuner with auto tune. I am going to dyno the bike both ways just to see the comparison
I know a lot of people doing these big bore builds are using the HPI 62mm throttle body with there stock heads or modified stock heads. I just read an article on the Harley heads. The intake ports on the stock heads are larger then the ones on the SE heads that come in the kit. That is why Harley is using the 64mm throttle body in the kit. The smaller ports keep the velocity up for better cylinder fill. And the smaller 62mm throttle accomplishes the same with the larger stock ports.
After I finish the build it will most likely be tooooo cold to put any miles on the bike. So it will most likely be spring before I can get some break in miles on the motor. Then it will be off to the tread mill.
Be Safe
THE DAWG
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There are two versions of the SE CNC heads. The extreme cnc heads are ok, on the 131. Aftermarket surpasses them using stock castings.
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There are two versions of the SE CNC heads. The extreme cnc heads are ok, on the 131. Aftermarket surpasses them using stock castings.
The new CNC Extreme heads are now part of the 131 Stage IV kit. So the only thing I still need to do is change the valve springs.
Thanks for the heads up. No pun intended!!!!
Be Safe
THE DAWG
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Well I did pull the trigger on a new 2020 CVO Limited in Sand Dune. I only have 125 miles on the bike. But I am very impressed in the ride and the power. Never the less I am going to do a 131 upgrade. I'm not looking for big numbers. I am going to use the Harley SE heads that came in the kit. I am also going to use the 64mm throttle body that came in the kit. Along with the build will be a Fueling race oil pump, cam plate, 521 cam and pushrods. I am going to run a D&D Billet Cat exhaust. The clutch is going to be a Rekluse with a billet basket and a Baker Compensator. I am also going to run a T-MAX tuner and the Harley Street Tuner with auto tune. I am going to dyno the bike both ways just to see the comparison
I know a lot of people doing these big bore builds are using the HPI 62mm throttle body with there stock heads or modified stock heads. I just read an article on the Harley heads. The intake ports on the stock heads are larger then the ones on the SE heads that come in the kit. That is why Harley is using the 64mm throttle body in the kit. The smaller ports keep the velocity up for better cylinder fill. And the smaller 62mm throttle accomplishes the same with the larger stock ports.
After I finish the build it will most likely be tooooo cold to put any miles on the bike. So it will most likely be spring before I can get some break in miles on the motor. Then it will be off to the tread mill.
Be Safe
THE DAWG
Something to think about.
If you are using the pistons in the kit you might want to consider using a .030 cometic head gskt to bump the compression a bit. Depending on the actual deck height I believe the static compression is around 10.7. The 521 would like that little extra compression.
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Unless your dead seat on the Fueling oil pump, I would use the 2020 8 lobe pump. Many people are using it now on big inch and big power builds. GMR is now using it for example.
I have over 20,000 miles on my build, 130 inch and 163HP and 167 torque. I am using the HD 2020 oil pump, as is Joe who posted above. Neither of us have had issues.
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Unless your dead seat on the Fueling oil pump, I would use the 2020 8 lobe pump. Many people are using it now on big inch and big power builds. GMR is now using it for example.
I have over 20,000 miles on my build, 130 inch and 163HP and 167 torque. I am using the HD 2020 oil pump, as is Joe who posted above. Neither of us have had issues.
I actually have the new 2020 oil pump. I ordered the kit for my 2019 RG. But the 2020 Limited already has the new pump in it from the factory. Moonshine HD did a comparison on three oil pumps. The S&S, Fueling and the new 8 lobe oil pumps. They rated the 8 lobe the lowest of the three.
I followed your thread on your build. Very impressive numbers.
Be Safe
THE DAWG
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I actually have the new 2020 oil pump. I ordered the kit for my 2019 RG. But the 2020 Limited already has the new pump in it from the factory. Moonshine HD did a comparison on three oil pumps. The S&S, Fueling and the new 8 lobe oil pumps. They rated the 8 lobe the lowest of the three.
I followed your thread on your build. Very impressive numbers.
Be Safe
THE DAWG
Interesting on the Moonshine HD comparison. I'll have to look for it and watch it.
Also interesting, they have such a different out look about the pump than some other well known builders. Several like the HD over the S&S.
So far the H-D 2020 pump has been good to me and a couple others on here with built motors.
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Those would be the same guys that presented a flawed look at head bolts and torqueing, heads that were improperly ported and now oil pumps that they would be happy to sell you. We consistently are making in excess of 155hp with less than 3oz sump oil, tested. This is with the 8 lobe 2020 pump that costs less than half or a third of the cost of some of the offerings.
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Those would be the same guys that presented a flawed look at head bolts and torqueing, heads that were improperly ported and now oil pumps that they would be happy to sell you. We consistently are making in excess of 155hp with less than 3oz sump oil, tested. This is with the 8 lobe 2020 pump that costs less than half or a third of the cost of some of the offerings.
Interesting. I had never heard anything about Moonshine. A friend sent me the link to the oil pump comparison a while back. Like I said I already have the 8 lobe in the bike. So I really don't need to change. I may just send out my stock heads to you for the work and park the CNC Extreme SE heads on the bench.
Be Safe
THE DAWG
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Send them both. The stock heads are so much better to start with then the older CNC SE heads. I don't have any experience with the CNC Extreme heads but a quick trip to the flow bench would tell a story.
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Send them both. The stock heads are so much better to start with then the older CNC SE heads. I don't have any experience with the CNC Extreme heads but a quick trip to the flow bench would tell a story.
I'll call you this week. I would like to see the difference between the two.
Be Safe
THE DAWG
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Following your progress.
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Unless your dead seat on the Fueling oil pump, I would use the 2020 8 lobe pump. Many people are using it now on big inch and big power builds. GMR is now using it for example.
I have over 20,000 miles on my build, 130 inch and 163HP and 167 torque. I am using the HD 2020 oil pump, as is Joe who posted above. Neither of us have had issues.
Hey Dave,
I’d like to build my 117 to 128 and I already have the S&S pump and plate. Would be saying that I need to switch my pump out as well when I do the build?
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Hey Dave,
I’d like to build my 117 to 128 and I already have the S&S pump and plate. Would be saying that I need to switch my pump out as well when I do the build?
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No if you already have the S&S oil pump set up, no need to switch when you build.
I was saying if you have a pre 2020 bike, you do not need to spend the big money on the S&S oil pump, the new 2020 Harley 8 lobe pump works great.
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Ok thank you Dave. I’ll post mine when it’s done as well and list the build setup.
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Well I have been waiting on Thunder Heart Industries to come out with the updated version of the Thunder Max for the RDRS that is standard on my bike. The new version is due to be released at the end of this month. I have also decided to not use the fueling 521 cam. Instead I am going with the Cycle Rama 480. I am really looking for more torque. So next week I am going to start the build. The weather will be warming up and I can get some much need riding time in.
Be Safe
THE DAWG
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Well I have been waiting on Thunder Heart Industries to come out with the updated version of the Thunder Max for the RDRS that is standard on my bike. The new version is due to be released at the end of this month. I have also decided to not use the fueling 521 cam. Instead I am going with the Cycle Rama 480. I am really looking for more torque. So next week I am going to start the build. The weather will be warming up and I can get some much need riding time in.
Be Safe
THE DAWG
Hey Dawg,
Can we get the cam breakdown for each and tell why you selected the one you did? May help for us all to learn what you know?
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Hey Dawg,
Can we get the cam breakdown for each and tell why you selected the one you did? May help for us all to learn what you know?
I went with the Cycle Rama 480 for the early torque. Most of my riding is below 3500 rpm. I will also be pulling a Bushtec Trailer with this bike. I'm not chasing HP numbers on a 1050 lb. Motorcycle. And most of my riding is on the highway. The 480 came highly recommended from quite a few people for being a torque monster. So I hope I made the right decision. If not it would just be another simple cam change. Can't wait to get this build done. It's been a busy winter for me. I need some wind therapy very soon.
Be Safe
THE DAWG
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The sucess will be strongly dependent on a good tune and a pipe conducive to making torque.
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The sucess will be strongly dependent on a good tune and a pipe conducive to making torque.
I agree completely. But some cams will climb to their max torque at a lower RPM. Right now that is what I am looking for. I guess time will tell.
Be Safe
THE DAWG
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Well I finally got around to getting the motor finished. Parts are now becoming scarce. Still waiting on the Rekluse clutch basket and clutches. But the motor is finished and I now have 200 miles on it. I installed the Harley Pro Street Tuner with the Auto Tune Module for the breakin and first dyno numbers. While I have been pretty easy on it I did give it a 1/2 throttle blast up to 3500 RPM and went through the gears. I am very impressed on how quick this bike is. It is going to take a few weeks to get 1000 miles on it before it heads to the treadmill. Can't wait to see the numbers.
Be Safe
THE DAWG
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Well I finally got around to getting the motor finished. Parts are now becoming scarce. Still waiting on the Rekluse clutch basket and clutches. But the motor is finished and I now have 200 miles on it. I installed the Harley Pro Street Tuner with the Auto Tune Module for the breakin and first dyno numbers. While I have been pretty easy on it I did give it a 1/2 throttle blast up to 3500 RPM and went through the gears. I am very impressed on how quick this bike is. It is going to take a few weeks to get 1000 miles on it before it heads to the treadmill. Can't wait to see the numbers.
Be Safe
THE DAWG
When you get it broken in and tuned, try a 6th gear roll on from 60-65! You’ll like the torque!
Mine will keep pulling until you roll off, long grades over the mountains here are NO problem, just set the cruise control for 85 and it will climb with ease.
:2vrolijk_21:
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Thanks Mike. I was at the dealer today talking to the Service Manager. I asked him how many miles he wanted on the motor before the tune. We chucked as he said you tell me when you are ready. Well I have 300 miles on the motor right now and will be riding it this weekend. Soooooo we are talking about the second week of June. I'll get there early and they will pull right into the dyno room. Looking forward to getting this finished up.
Be Safe
THE DAWG
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Thanks Mike. I was at the dealer today talking to the Service Manager. I asked him how many miles he wanted on the motor before the tune. We chucked as he said you tell me when you are ready. Well I have 300 miles on the motor right now and will be riding it this weekend. Soooooo we are talking about the second week of June. I'll get there early and they will pull right into the dyno room. Looking forward to getting this finished up.
Be Safe
THE DAWG
Absolutely, He will likely know how to do a "break-in" tune for you. Realize that yours is an M8. Broke my 117 Twin Cam in right on the dyno with no miles on it.
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The HD with auto tune may be okay with the combo but I always shake my head when I hear people ridding their bikes for 1,000 miles with a bad tune to "break in the motor". Seems crazy to me. I always believed in letting the rings seat ie. a few good heat cycles and a few easy miles and then I wanted it tuned correctly.
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The HD with auto tune may be okay with the combo but I always shake my head when I hear people ridding their bikes for 1,000 miles with a bad tune to "break in the motor". Seems crazy to me. I always believed in letting the rings seat ie. a few good heat cycles and a few easy miles and then I wanted it tuned correctly.
I have already decided to get it tuned asap. I have been busy and when I can ride it's always raining here. And after the first 50 miles I put her back on the lift and changed the engine oil. So you are correct. There is no reason not to put the bike on the dyno and get the tune richened up.
Be Safe
THE DAWG
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If it didn't break in after 30 miles of normal riding it will never. Harley brewed up the 1000 mile number to buffer warranty issues.
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If it didn't break in after 30 miles of normal riding it will never. Harley brewed up the 1000 mile number to buffer warranty issues.
And I have to agree with you. I thought a couple of good weekends of riding local would have put me at 1000 miles. The auto tune is working as the motor is running cooler now. I have over 500 miles on the motor and it is scheduled to be dynoed a week from tomorrow, Now if I can find the time to ride this year I will be a happy man!!!!
Be Safe
THE DAWG
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I had the bike tuned yesterday with the HD Tuner. it came in at 136/150. While I am happy with the EPA tuned numbers, this bike runs HOTTTTTT. I will be changing either to the Power Vision or the T-Max real soon.
Be Safe
THE DAWG
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Which clutch are people using that isn't a beast to pull in?
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Rekluse exclusively. Just finished a 150/150 build and we used the Rekluse RMS-285. Easier pull than OEM, mid point engage smooth, no plate drag.
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Rekluse exclusively. Just finished a 150/150 build and we used the Rekluse RMS-285. Easier pull than OEM, mid point engage smooth, no plate drag.
I have a Rekluse clutch and basket on order, The clutch finally came in. I guess the slave cylinder is next on the list. It is hard to get some items right now.
Be Safe
THE DAWG
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Been running the Rekluse torque drive in my 2019 for 28,000 miles now.
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Been running the Rekluse torque drive in my 2019 for 28,000 miles now.
With the stock clutch basket???? The basket seems to be a weak point. So far I have not had any clutch problems. BUT I'm not pulling the kind of numbers you are either. I am going to wait until fall to change the clutch, basket and compensator. I now have all of the parts.
I also need to look at the fullsac exhaust if I am going to change it. I will need to do it before I install the T-max. Which I also want to do in the fall.
Be Safe
THE DAWG