Twin Cam Motors Twin Cam 1998 thru 2017

110" Dyna Woods Triple 8's...

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  #71  
Old 03-30-2023 | 09:48 AM
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Originally Posted by 98hotrodfatboy
I'll try the SE plugs first at .038" and the original timing tables and go from there.. But Disabling knock detection wouldn't be the smartest thing to do.. Let the system take care of it's self..
I don't trust the system but I trust my tune. I have other parameters set to pull a little at a time under extreme heat etc. based on engine temp and IAC temp. I haven't had it pull any tho. At least not that I know of or can feel. I don't datalog and look for it all the time but I have. You will feel it when it pulls 6° - 8° of timing
Might want to check the resistance of your wires if you haven't already. There's a pretty wide tolerance tho. The numbers are in the fsm.
It will pull timing if there's anything funky going on in the combustion chambers. I would think fuel being off a lot would do it but not sure on that.

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Last edited by 60Gunner; 03-30-2023 at 10:28 AM.
  #72  
Old 03-30-2023 | 09:58 AM
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Originally Posted by Lonewolf176
Sorry, should've clarified. You've been adjusting your fuel and ve tables without feedback from o2 sensors. How do you know they are even close? Leaving the 02's active in the right areas will adjust for the inconsistency of fuel.
I don't run closed loop at all..I don't trust 14.3-14.9 AFR's.. I always ran open loop and if you really know how to read a spark plug you won't have any issues.. Also you will need to have some knowledge on what a specific build will require for a base starting point and fine tune from there.. Don't forget no matter what the input is, it's still all just a calculation.. Spark plugs are your friend.. Here's the best way to read a plug..


 
  #73  
Old 03-30-2023 | 10:05 AM
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Originally Posted by 60Gunner
I have no use for such a system myself but I trust my tune. I have other parameters set to pull a little at a time under extreme heat etc. based on engine temp and IAC temp. I haven't had it pull any tho. At least not that know of or can feel. I don't datalog and look for it all the time but I have. You will feel when it pulls 6° - 8° of timing
Might want to check the resistance of your wires if you haven't already. There's a pretty wide tolerance tho. The numbers are in the fsm.
it will pull timing if there's anything funky going on in the combustion chambers. I would think fuel being off a lot would do it but not sure on that.

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I only data log to get the tune right.. Once I'm done tuning then I set it and don't worry about it. But it is going to tell you a lot of what's going on... 6-8° is a massive amount of timing and yes you should feel it.. I have my parameters set up so it only pulls 1 to 2° at a time as necessary.. It definitely does take time to get it perfect and that's always my goal cuz I'm ****ing ****...
 
  #74  
Old 03-30-2023 | 10:36 AM
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Originally Posted by 98hotrodfatboy
I only data log to get the tune right.. Once I'm done tuning then I set it and don't worry about it. But it is going to tell you a lot of what's going on... 6-8° is a massive amount of timing and yes you should feel it.. I have my parameters set up so it only pulls 1 to 2° at a time as necessary.. It definitely does take time to get it perfect and that's always my goal cuz I'm ****ing ****...
I'm **** about it too. lol
Learning to read plugs goes back to the days of tuning with carbs and tuning our hotrods as kids. Most don't know how. They only know fouled or not fouled. They don't know you can read timing too. Or that you need to look down the core with a magnifying lense. The top ring is only idle.
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  #75  
Old 04-25-2023 | 08:38 PM
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Did a test hit tonight. I liked my 1/8 mile time but think I can still improve..


 
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  #76  
Old 04-25-2023 | 11:58 PM
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Yeap. Might be making 120 hp..
 
  #77  
Old 04-26-2023 | 07:12 AM
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Originally Posted by Max Headflow
Yeap. Might be making 120 hp..
That was my first test hit with the new Shinko, I wasn't sure how it would hook up so I didn't come off the line to hard but did carry the front end for about 20'.. Once I get the feel of it I'm hoping do high 10's.. Too bad we didn't have a track on Long Island.... A seasoned asphalt might yield me better numbers..
BTW I went back to stock gearing, 32/66...
 
  #78  
Old 04-26-2023 | 08:14 AM
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Your weight and trap speed are a great indicator of hp being made, have you weighed the bike with you on it?
 
  #79  
Old 04-26-2023 | 09:12 AM
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No I haven't weighed the bike but I do have a scale here at work so maybe I'll give that a shot today at lunch time and then add my 160 lb...
 

Last edited by 98hotrodfatboy; 04-26-2023 at 11:28 AM.
  #80  
Old 04-26-2023 | 07:25 PM
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Originally Posted by 98hotrodfatboy
That was my first test hit with the new Shinko, I wasn't sure how it would hook up so I didn't come off the line to hard but did carry the front end for about 20'.. Once I get the feel of it I'm hoping do high 10's.. Too bad we didn't have a track on Long Island.... A seasoned asphalt might yield me better numbers..
BTW I went back to stock gearing, 32/66...
Hello there Bob its been a while nice bike your 110 seems to have turned out good! you know that wheelie stuff will get you in trouble with the troopers here in NY STATE! and its hard on the fork seals too. Believe me I know from experience.
 
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