I have a 2005 Carl's Cycle 975 that I have seized 3 times.
The first time I took it back and had Carl's diagnose the problem and they determined it was detonation on PTO cylinder from improper fuel. They rebuilt it and I was on my way.
Since then I have had 2 more seizures that have physically looked the same as the first. After the second one I had RkTek make me some lower compression heads and that initially appeared to work but in the end it did not cure my problem. After the third seizure I was at a crossroad as what to do. Go far deeper to fix the problem or scrap the whole thing.
Over the next year I spoke to the boys at Carl's about 15 times on what to do and how to diagnose. I also spoke to a couple other places and knowledgeable people. From that process I have decided that it was never a detonation problem from improper octane fuel as was first suspected by Carl's. Every time it seized I was at 1/4 to 1/3 throttle. I'm convinced I am having a partial throttle burn down.
Which brings me back to the original question for my application. I need more fuel mid throttle.
What fuel box have you used?
Was it on a stock or modified engine?
What do I need to know about fueling boxes?
99% of my motor tuning experience comes from the days when you tuned with an EGT, piston wash and reading plugs. Then adjust the carb from there. Im decent at tuning with carbs, don't know squat on changing fuel injection.
Any other insight or link(s) on an explanation on how these fueling boxes work would be appreciated.
As a reference this is what I have done since I decided to rebuild.
Completely tore engine down.
New Parts:
Crank end seals
Intake boots
Pistons
ALL gaskets and o-rings
Oil pump cable
Fuel filter
Other work done:
Flashed computer with latest update by Carl's
Fuel injectors cleaned and flow checked by Witch Hunter Performance
Pressurized crank case to ensure all seals are good
Cleaned rubbed touched every part in this engine.
I need to check the fuel pressure before I crank it up.
The first time I took it back and had Carl's diagnose the problem and they determined it was detonation on PTO cylinder from improper fuel. They rebuilt it and I was on my way.
Since then I have had 2 more seizures that have physically looked the same as the first. After the second one I had RkTek make me some lower compression heads and that initially appeared to work but in the end it did not cure my problem. After the third seizure I was at a crossroad as what to do. Go far deeper to fix the problem or scrap the whole thing.
Over the next year I spoke to the boys at Carl's about 15 times on what to do and how to diagnose. I also spoke to a couple other places and knowledgeable people. From that process I have decided that it was never a detonation problem from improper octane fuel as was first suspected by Carl's. Every time it seized I was at 1/4 to 1/3 throttle. I'm convinced I am having a partial throttle burn down.
Which brings me back to the original question for my application. I need more fuel mid throttle.
What fuel box have you used?
Was it on a stock or modified engine?
What do I need to know about fueling boxes?
99% of my motor tuning experience comes from the days when you tuned with an EGT, piston wash and reading plugs. Then adjust the carb from there. Im decent at tuning with carbs, don't know squat on changing fuel injection.
Any other insight or link(s) on an explanation on how these fueling boxes work would be appreciated.
As a reference this is what I have done since I decided to rebuild.
Completely tore engine down.
New Parts:
Crank end seals
Intake boots
Pistons
ALL gaskets and o-rings
Oil pump cable
Fuel filter
Other work done:
Flashed computer with latest update by Carl's
Fuel injectors cleaned and flow checked by Witch Hunter Performance
Pressurized crank case to ensure all seals are good
Cleaned rubbed touched every part in this engine.
I need to check the fuel pressure before I crank it up.
