Do I need a cooler?
Seasoned HDF Member
Joined: Nov 2004
Posts: 8,129
Likes: 1,981
From: Ottawa, CANADA
Cheers!
Road Warrior
Joined: Nov 2022
Posts: 1,541
Likes: 543
From: MN
The tune was dialed in. It was strictly due to the high ambient temps. Under 100 F, there were no pinging issues, whatsoever. Even up to almost 110 it wasn't that bad. Once it hit 110 and above, I experienced the problem big time. The way I see it, lowering the oil temps will lower the engine temps, and that should help to mitigate the problem. Will it cure it, altogether? I won't know until this summer.
Cheers!
Cheers!
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,923
Likes: 8,027
From: poway
In this case it's likely a poor tune. The EFI has delphi ion sense knock sensors.. Measures ions across the spark plug gap to determine detonation.
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
While that's true, there's a difference between improper timing, and fuel for that matter, based on ambient temp/engine temp. It's one thing to tune for ideal conditions and another to use the parameters given to tune for not so ideal conditions. You don't want to run the same timing for both
Seasoned HDF Member
Joined: Nov 2004
Posts: 8,129
Likes: 1,981
From: Ottawa, CANADA
Regardless, lowering oil/engine temps is always a good thing.
Cheers!
Seasoned HDF Member
Joined: Nov 2004
Posts: 8,129
Likes: 1,981
From: Ottawa, CANADA
Cheers!
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,923
Likes: 8,027
From: poway
Reaper is carbureted. The ignition is a Daytona TwinTec TC-88A, with a custom, dyno tuned, ignition map designed for the majority of my riding conditions, and style. The tune isn't the problem. As I said, this ONLY occurs when the ambient temps are above 100 F.
Regardless, lowering oil/engine temps is always a good thing.
Cheers!
Regardless, lowering oil/engine temps is always a good thing.
Cheers!
Add. BTW What plugs are you running..
Last edited by Max Headflow; Feb 19, 2023 at 07:48 PM. Reason: Add.
Seasoned HDF Member
Joined: Nov 2004
Posts: 8,129
Likes: 1,981
From: Ottawa, CANADA
Well in that case there is not much you can do. to adjust for temps. If it was done on a dyno, good chace it has too much timing than needed.. If it was done without load and only the drum, the simulated bike weight can be quite a bit lighter than real world.
Add. BTW What plugs are you running..
Add. BTW What plugs are you running..
I use NGK DCPR8EIX (Iridium, one heat range colder than stock) plugs, gapped to 0.040"
Cheers!
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Tourer
Joined: May 2011
Posts: 469
Likes: 158
From: Alberta
I'm also a fan of Iridium spark plugs, but in some cases they can cause the engine to run too lean. It would be worth trying a set of stock correct spark plugs for your year of bike and see what happens. Not sure what ignition system you are running but it does sound like you have a bit too much advance. Iridium plugs can make this condition worse.
I see that you don't have the Delphi system, which doesn't work well with Iridium plugs. I found that out on my 08 Softail. I gained better gas mileage when I used them but I had lean conditions, hanging idle when coming to a stop and so on. So in that bike I had to run the stock HD plugs.
I see that you don't have the Delphi system, which doesn't work well with Iridium plugs. I found that out on my 08 Softail. I gained better gas mileage when I used them but I had lean conditions, hanging idle when coming to a stop and so on. So in that bike I had to run the stock HD plugs.
Seasoned HDF Member
Joined: Nov 2004
Posts: 8,129
Likes: 1,981
From: Ottawa, CANADA
I'm also a fan of Iridium spark plugs, but in some cases they can cause the engine to run too lean. It would be worth trying a set of stock correct spark plugs for your year of bike and see what happens. Not sure what ignition system you are running but it does sound like you have a bit too much advance. Iridium plugs can make this condition worse.
I see that you don't have the Delphi system, which doesn't work well with Iridium plugs. I found that out on my 08 Softail. I gained better gas mileage when I used them but I had lean conditions, hanging idle when coming to a stop and so on. So in that bike I had to run the stock HD plugs.
I see that you don't have the Delphi system, which doesn't work well with Iridium plugs. I found that out on my 08 Softail. I gained better gas mileage when I used them but I had lean conditions, hanging idle when coming to a stop and so on. So in that bike I had to run the stock HD plugs.
Cheers!