Precirotate D5 Engine
03-02-2012 | 03:17 PM
#77
Tech Master
Joined: Jan 2010
Posts: 1,628
My friend has this engine and it is behaving very "on/off", not progressive throttle action. I tried to ask which pipe he was running but he said it was just a Precirotate pipe, which leads me to believe it is a 2088 PR pipe.
If you want more smoothness, more linear throttle curve, less on/off behaviour, would it be a good idea to try a different pipe, or is it a carb-issue?
I was thinking it might behave better with an EFRA 2072 Go pipe?
If you want more smoothness, more linear throttle curve, less on/off behaviour, would it be a good idea to try a different pipe, or is it a carb-issue?
I was thinking it might behave better with an EFRA 2072 Go pipe?
04-25-2012 | 12:53 PM
#78
Tech Initiate
Joined: Jun 2011
Posts: 24
From: Portugal
My friend has this engine and it is behaving very "on/off", not progressive throttle action. I tried to ask which pipe he was running but he said it was just a Precirotate pipe, which leads me to believe it is a 2088 PR pipe.
If you want more smoothness, more linear throttle curve, less on/off behaviour, would it be a good idea to try a different pipe, or is it a carb-issue?
I was thinking it might behave better with an EFRA 2072 Go pipe?
If you want more smoothness, more linear throttle curve, less on/off behaviour, would it be a good idea to try a different pipe, or is it a carb-issue?
I was thinking it might behave better with an EFRA 2072 Go pipe?
09-14-2012 | 02:53 PM
#79
Tech Master
iTrader: (7)
Joined: Dec 2008
Posts: 1,115
From: In a house
I have the 21C version, and this is just a heads up or FYI of what can happen, my motor has 1/2 gallon on it, and makes great power, and great run time. Last weekend, I noticed some fuel seepage behind the flywheel, no problem I'll put a TKO in. Upon pulling the head off, this is what the piston looked like, and after further tear down the whole piston is like this, crank, sleve and rod show no markings or pitting. I contacted Acend/PR-RC, and went back and forth, I'm concerned about the realiablility now, they indicated that I may have left the motor out in the open and that could have caused it, no, not true. There latest responce is " they see no problem
running in this situation". To say the least I'm not happy with it, the motor still has good compression and pinch, does run for how long who knows. I thought atleast they'd send a repalcement piston and sleeve. What do you think?
running in this situation". To say the least I'm not happy with it, the motor still has good compression and pinch, does run for how long who knows. I thought atleast they'd send a repalcement piston and sleeve. What do you think?
08-03-2013 | 04:21 AM
#84
Tech Adept
Joined: Aug 2012
Posts: 161
From: Finland
I have the 21C version, and this is just a heads up or FYI of what can happen, my motor has 1/2 gallon on it, and makes great power, and great run time. Last weekend, I noticed some fuel seepage behind the flywheel, no problem I'll put a TKO in. Upon pulling the head off, this is what the piston looked like, and after further tear down the whole piston is like this, crank, sleve and rod show no markings or pitting. I contacted Acend/PR-RC, and went back and forth, I'm concerned about the realiablility now, they indicated that I may have left the motor out in the open and that could have caused it, no, not true. There latest responce is " they see no problem
running in this situation". To say the least I'm not happy with it, the motor still has good compression and pinch, does run for how long who knows. I thought atleast they'd send a repalcement piston and sleeve. What do you think?
running in this situation". To say the least I'm not happy with it, the motor still has good compression and pinch, does run for how long who knows. I thought atleast they'd send a repalcement piston and sleeve. What do you think?
As the importer told you there is no problems and just run it as it is.
If you wanted a cnc made piston you took the wrong brand and especially paid the wrong price.
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