M8 Engine Temps
Stellar HDF Member
Joined: Apr 2012
Posts: 3,117
Likes: 1,193
From: Maryland
Error corrected/post edited. I keep doing that... stating Sporty numbers instead of M8s. Mental thing. Or maybe my fingers just don't listen to my brain.
Last edited by T^2; Aug 27, 2023 at 12:48 PM.
Club Member
Joined: Dec 2014
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From: SWFL
THATS better! Whew
Stellar HDF Member
Joined: Apr 2012
Posts: 3,117
Likes: 1,193
From: Maryland
Another thing I'll note... I can't recall seeing any post over time where one states they consistently see ETs in the target ranges that DK specify. Doesn't mean that such experiences don't exist. It's just that I've never seen any such claims. If one does see those ETs consistently, I'd be curious to see what they did to get them there.
From my own point of view, If the magic sauce requires hanging a bunch of new crap (maybe a harsh term - maybe "products" might be better) on the bike, I can't say - at first blush - that I would find that too motivating. Particularly when it's to solve perhaps what might very well be a non-problem.
I'm pretty happy with how my two toys are setup and function now. When the time comes and they expire... We can rebuild them. We have the technology. Just as long as it doesn't cost $6 Million.
From my own point of view, If the magic sauce requires hanging a bunch of new crap (maybe a harsh term - maybe "products" might be better) on the bike, I can't say - at first blush - that I would find that too motivating. Particularly when it's to solve perhaps what might very well be a non-problem.
I'm pretty happy with how my two toys are setup and function now. When the time comes and they expire... We can rebuild them. We have the technology. Just as long as it doesn't cost $6 Million.
Club Member
Joined: Dec 2014
Posts: 10,734
Likes: 3,755
From: SWFL
Another thing I'll note... I can't recall seeing any post over time where one states they consistently see ETs in the target ranges that DK specify. Doesn't mean that such experiences don't exist. It's just that I've never seen any such claims. If one does see those ETs consistently, I'd be curious to see what they did to get them there.
From my own point of view, If the magic sauce requires hanging a bunch of new crap (maybe a harsh term - maybe "products" might be better) on the bike, I can't say - at first blush - that I would find that too motivating. Particularly when it's to solve perhaps what might very well be a non-problem.
I'm pretty happy with how my two toys are setup and function now. When the time comes and they expire... We can rebuild them. We have the technology. Just as long as it doesn't cost $6 Million.
From my own point of view, If the magic sauce requires hanging a bunch of new crap (maybe a harsh term - maybe "products" might be better) on the bike, I can't say - at first blush - that I would find that too motivating. Particularly when it's to solve perhaps what might very well be a non-problem.
I'm pretty happy with how my two toys are setup and function now. When the time comes and they expire... We can rebuild them. We have the technology. Just as long as it doesn't cost $6 Million.
Stellar HDF Member
Joined: Mar 2017
Posts: 3,321
Likes: 1,884
I trust this from them. I run at or just under e.t 300 ( ( power vision gauge)with a 114 with the 22xE cam and fuel moto’s map. This is in the dead of summer in ct. no worries! I believe the highest et temp I have noticed was 315 et.
Club Member
Joined: Dec 2014
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From: SWFL
Ahh, what I wouldnt give for Northeast summers
Seasoned HDF Member
Joined: Dec 2005
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From: poway
No point - the NHD is the old flat head engine - they got a huge axial flow air fan on them - they are "meant" to run hot. i.e. - they won't give you as many hours as an OHV air-cooled engine. Which is exactly whey they were discontinued. Onan had a new OHV air cooled twin ready to replace the Performer engines, then Cummins bought Onan and killed all new engine product development, handing the market to Kawasaki Industrial Engines. Nice American management model.
EITMS was designed to cool the motor - I read about it. That is why the rear cylinder was selected - it is trapped from ambient air cooling front and back, at least the front of the front cylinder is open to air.
EITMS was designed to cool the motor - I read about it. That is why the rear cylinder was selected - it is trapped from ambient air cooling front and back, at least the front of the front cylinder is open to air.
You are right about EITMS, 17 bagger owners manual says it's mainly to cool the rear cylinder.. Obviously the rest of the motor has to get hotter..
Road Warrior
Joined: Nov 2022
Posts: 1,541
Likes: 543
From: MN
OHV costs more. More mechanisms - rocker arms, shafts, valve cover, blah blah blah. Engine runs cooler, has higher compression ratio. No dead cylinder space on top of the valves as with the flathead.
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From: poway
If OHV were crap, Ford will still be making their 1932 flathead V8 engine.
OHV costs more. More mechanisms - rocker arms, shafts, valve cover, blah blah blah. Engine runs cooler, has higher compression ratio. No dead cylinder space on top of the valves as with the flathead.
OHV costs more. More mechanisms - rocker arms, shafts, valve cover, blah blah blah. Engine runs cooler, has higher compression ratio. No dead cylinder space on top of the valves as with the flathead.
Last edited by Max Headflow; Aug 28, 2023 at 10:05 AM.
Road Warrior
Joined: Nov 2022
Posts: 1,541
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From: MN
It more along the lines of simple reliability.. IIRC the newer ones used a belt between the motor and generator. It wouldn't last. Also the generator had issues with syncing up to systems that needed a low tolerance on the frequency output. The was all based on the amount of repairs required were much more early models.. Flatheads obviously are not as efficient for sure..
Generators in RV's went to belt parallel shaft drive to reduce vibration into the coach frame - it's more expensive to make a belt drive than direct drive generator. I was at Onan when that happened, heard all about it though I was in Cummins large generators. Generac introduced it, Onan was quieter.