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SUPRAGTE Forums Junkie Location: North Sydney Registered: May 2002	Re: 1jz ma61 overheating Wed, 04 December 2002 16:15 Man i been saying this from day one for that car, actually before the 1jz was even put in. Get rid of that crap factory ECU. This will be most likely your overheating issue. You know how the car is running in limp mode as I told Michael as well, it reduces the ignition advance and increases the injector pulsewidths. Engines that have a lack of ignition timing have major overheating issues as the combustion process is still occuring when the exhaust valves are opening into the exhaust manifold instead of back in the head. The massive increase in temp there causes the whole engine to become very hot through the cooling system. Correctly advanced ignition timing ensures the combustion process occurs as thoroughly as possible before the exhaust valves begin to open. Compounding the problem is the increased fuel being injected as a result of the limp mode problem. This over fuels the engine and exaserbates the prolonged combustion process into the exhaust making it worse. Send the factory ECU to the bin,get a manual 1jz ECU or better still get an aftermarket ECU to unlock all that extra power hidden somewhere in the 1JZ. [Report message to a moderator]

	Subject	Poster	Date
	1jz ma61 overheating	draven	Tue, 03 December 2002 08:50
	Re: 1jz ma61 overheating	poombah	Tue, 03 December 2002 10:36
	Re: 1jz ma61 overheating	draven	Tue, 03 December 2002 13:13
	Re: 1jz ma61 overheating	SUPRAGTE	Wed, 04 December 2002 16:15
	Re: 1jz ma61 overheating	mx83toy	Thu, 05 December 2002 00:30
	Re: 1jz ma61 overheating	SUPRAGTE	Thu, 05 December 2002 01:05
	Re: 1jz ma61 overheating	draven	Thu, 05 December 2002 01:15
	Re: 1jz ma61 overheating	mx83toy	Thu, 05 December 2002 02:46
	Re: 1jz ma61 overheating	draven	Thu, 05 December 2002 03:25
	Re: 1jz ma61 overheating	gianttomato	Thu, 05 December 2002 03:41
	Re: 1jz ma61 overheating	ma61_turbo	Thu, 05 December 2002 04:43
	Re: 1jz ma61 overheating	ma61_turbo	Thu, 05 December 2002 02:41
	Re: 1jz ma61 overheating	ed_ma61	Thu, 05 December 2002 04:03
	Re: 1jz ma61 overheating	SUPRAGTE	Thu, 05 December 2002 05:31
	Re: 1jz ma61 overheating	draven	Thu, 05 December 2002 05:46
	Re: 1jz ma61 overheating	Norbie	Thu, 05 December 2002 05:48
	Re: 1jz ma61 overheating	Bugman	Thu, 05 December 2002 05:49
	Re: 1jz ma61 overheating	zorro	Thu, 05 December 2002 10:43
	Re: 1jz ma61 overheating	draven	Thu, 05 December 2002 10:49
	Re: 1jz ma61 overheating	ed_ma61	Thu, 05 December 2002 13:25
	Re: 1jz ma61 overheating	ed_ma61	Thu, 05 December 2002 13:27
	Re: 1jz ma61 overheating	draven	Thu, 05 December 2002 18:39
	Re: 1jz ma61 overheating	humble	Fri, 06 December 2002 00:19
	Re: 1jz ma61 overheating	gianttomato	Fri, 06 December 2002 00:38
	Re: 1jz ma61 overheating	draven	Fri, 06 December 2002 04:39
	Re: 1jz ma61 overheating	zorro	Fri, 06 December 2002 06:12
	Re: 1jz ma61 overheating	SUPRAGTE	Sat, 07 December 2002 09:42
	Re: 1jz ma61 overheating	draven	Sat, 07 December 2002 12:45
	Re: 1jz ma61 overheating	SUPRAGTE	Sun, 08 December 2002 09:40
	Re: 1jz ma61 overheating	draven	Mon, 16 December 2002 04:08
	Re: 1jz ma61 overheating	SUPRAGTE	Mon, 16 December 2002 11:17
	Re: 1jz ma61 overheating	draven	Mon, 16 December 2002 12:39
	Re: 1jz ma61 overheating	5m3ghead	Mon, 23 December 2002 11:36
	Re: 1jz ma61 overheating	draven	Mon, 23 December 2002 13:15
	Re: 1jz ma61 overheating	mx83toy	Mon, 23 December 2002 13:56
	Re: 1jz ma61 overheating	draven	Mon, 23 December 2002 18:46

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