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Bhud |
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Bhud World Chat Champion
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adengtg |
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adengtg Scooby Slapper
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Riejufixing |
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Riejufixing World Chat Champion
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Bhud |
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Bhud World Chat Champion
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Sister Sledge |
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Sister Sledge World Chat Champion
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MCN |
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MCN Super Spammer
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Fizzer Thou |
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Fizzer Thou World Chat Champion
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Bhud |
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Bhud World Chat Champion
Joined: 11 Oct 2018 Karma :
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Posted: 00:37 - 25 Apr 2019 Post subject: |
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Fizzer Thou wrote: |
WHAT!!!!
Why would any engine want to fire the air/fuel mixture after top dead centre?Or at top dead centre?There would be insufficient time for the flame travel to reach the outer extremities of the combustion chamber,to fire the complete air/fuel mixture and to achieve full burn
As an example my R1 fires at 5 degrees before top dead centre at 1100rpm but at 5500rpm the electronic advance goes to 55 degrees BTDC.
A weak ignition will result in poor combustion,excessive fuel consumption and engine damage. |
My explanation was fucked up and wrong - ignore it.
What I should have said was, the ignition is retarded from the factory not to create optimum pressure at the optimum moment in the combustion chamber, in order that the bike can tolerate low
octane fuel, found in some countres, without preignition.
The 4-degree ignition advancer changes this so that the mixture ignites sooner. It's a well-known performance upgrade for this engine.
https://www.xjrider.com/viewtopic.php?t=8636
https://www.xjrider.com/viewtopic.php?t=106
https://www.xjrider.com/viewtopic.php?t=5214 |
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1198 |
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1198 World Chat Champion
Joined: 24 Jan 2013 Karma :
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Qyburn |
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Qyburn Renault 5 Driver
Joined: 14 Jul 2017 Karma :
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Easy-X |
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Easy-X Super Spammer
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Tdibs |
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Tdibs Traffic Copper
Joined: 16 Jan 2015 Karma :
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Posted: 14:49 - 25 Apr 2019 Post subject: |
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It will be fine.
Ive only had mine cook pretty bad once or twice, after long stretches of slow filtering where you are not getting much air flow at the height of summer. You can smell it and it felt a little less responsive. Just got to keep moving ____________________ Previous : 09 Vanvan 125| 02' Sv650s || Current: 1999 Xj600n | 1992 DR650 RSE | 2005 Fazer 1000 |
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MarJay |
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MarJay But it's British!
Joined: 15 Sep 2003 Karma :
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NutsyUk |
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NutsyUk Nearly there...
Joined: 22 Jun 2016 Karma :
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Posted: 16:29 - 25 Apr 2019 Post subject: |
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Last summer when we had that heat wave, I was stuck in traffic at 35c ambient... My legs were getting properly cooked. I also was a tinsy worried about engine temps. but the light never came on so.... I guess it was ok :p
Apart from the second degree burns on my legs ____________________ Yamaha FZ8/Fazer800 (split headlight one) 2014, gingerly getting used to the massive increase in HP and not killing myself in the process! That was easy to get used to.
Kawasaki ER6F 2007 650 Gonna sell as a project bike!
Lexmoto XTR S 125 Sold! |
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Old Thread Alert!
The last post was made 5 years, 2 days ago. Instead of replying here, would creating a new thread be more useful? |
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