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oldcorollas Forums Junkie Location: Kita-Ku, Sapporo, Japan Registered: January 2003	Re: Which Petrol is better Sat, 03 January 2004 11:48 in my little rolla, i notice a fair bit of difference between premium and 98 octane fuels... Optimax seems to make a little more noise, with a bti less go, than Mobil 8000, which is the only thing i run now (but was running opptimax from the day it was available) as for ethanol, i would recommend that ppl look up some of the race boat motor builders sites.. i remember there being some excellent descriptions on the motor differences (they were built for methanol tho) basically comes down to: you need TWICE the volume of methanol as petrol for the same amount of air. you should run higher compression with methanol, more like 13:1 (compared to 10:1 for petrol) you should run appropriate fuel lines AND INJECTOR SEALS designed for use with alcohol fuels. the problem with running high ethanol content, apart from rubber perishing, is that you need to increase the volume of fuel to maintain proper AFR's. in cars that cannot tune (which is almost all... how many cars have widebands and are tuned by AFR targets???), they will most likely run a bit lean with ethanol blend fuel, and that may be what causes 'engine damage' anyways, unfortunately the government is set on taxing it out of existence before it starts, and even LPG is about to be 'excised'. if ethanol/methanol was freely available at around$1-1.5 a litre, i'd go build me a 13:1 Cr K motor tomorrow (or just turbo my current one ) Cya, Stewart [Report message to a moderator]

	Subject	Poster	Date
	Which Petrol is better	rollin	Wed, 24 December 2003 16:04
	Re: Which Petrol is better	DiZ_	Thu, 25 December 2003 00:01
	Re: Which Petrol is better	Shraka	Thu, 25 December 2003 00:07
	Re: Which Petrol is better	thug_immortal	Thu, 25 December 2003 00:13
	Re: Which Petrol is better	onejayzed	Mon, 29 December 2003 05:54
	Re: Which Petrol is better	Soarer	Thu, 25 December 2003 00:28
	Re: Which Petrol is better	Classique71	Thu, 25 December 2003 00:30
	Re: Which Petrol is better	thug_immortal	Thu, 25 December 2003 01:53
	Re: Which Petrol is better	ed_ma61	Thu, 25 December 2003 02:52
	Re: Which Petrol is better	SEXY 16	Thu, 25 December 2003 03:55
	Re: Which Petrol is better	4DaDrift	Thu, 25 December 2003 05:10
	Re: Which Petrol is better	Ozzie	Thu, 25 December 2003 05:18
	Re: Which Petrol is better	7M-Brisbane	Thu, 25 December 2003 05:48
	Re: Which Petrol is better	Simon-AE86	Thu, 25 December 2003 06:06
	Re: Which Petrol is better	speakafreaka	Sat, 27 December 2003 04:48
	Re: Which Petrol is better	rollin	Thu, 25 December 2003 06:47
	Re: Which Petrol is better	4DaDrift	Thu, 25 December 2003 08:03
	Re: Which Petrol is better	CrUZsida	Thu, 25 December 2003 13:16
	Re: Which Petrol is better	faulksy	Thu, 25 December 2003 23:16
	Re: Which Petrol is better	justcallmefrank	Fri, 26 December 2003 01:30
	Re: Which Petrol is better	faulksy	Fri, 26 December 2003 04:08
	Re: Which Petrol is better	justcallmefrank	Fri, 26 December 2003 11:26
	Re: Which Petrol is better	manipulate	Fri, 26 December 2003 09:11
	Re: Which Petrol is better	ZZT231	Fri, 26 December 2003 10:34
	Re: Which Petrol is better	rollin	Fri, 26 December 2003 13:25
	Re: Which Petrol is better	SupraPete	Sat, 27 December 2003 06:42
	Re: Which Petrol is better	manipulate	Sat, 27 December 2003 06:55
	Re: Which Petrol is better	7M-Brisbane	Sat, 27 December 2003 16:59
	Re: Which Petrol is better	SupraPete	Sun, 28 December 2003 00:24
	Re: Which Petrol is better	Shraka	Sun, 28 December 2003 00:35
	Re: Which Petrol is better	Rolla Boy	Sun, 28 December 2003 01:27
	Re: Which Petrol is better	Shraka	Sun, 28 December 2003 14:18
	Re: Which Petrol is better	CamryMan	Sun, 28 December 2003 10:34
	Re: Which Petrol is better	smt_007	Mon, 29 December 2003 09:01
	Re: Which Petrol is better	Nark	Mon, 29 December 2003 13:16
	Re: Which Petrol is better	ae86drift	Sun, 28 December 2003 11:10
	Re: Which Petrol is better	Draza	Sun, 28 December 2003 11:21
	Re: Which Petrol is better	manipulate	Sun, 28 December 2003 14:39
	Re: Which Petrol is better	Shraka	Sun, 28 December 2003 14:43
	Re: Which Petrol is better	manipulate	Sun, 28 December 2003 14:47
	Re: Which Petrol is better	Lambolica	Sun, 28 December 2003 20:17
	Re: Which Petrol is better	manipulate	Sun, 28 December 2003 22:33
	Re: Which Petrol is better	Lambolica	Sun, 28 December 2003 22:35
	Re: Which Petrol is better	manipulate	Sun, 28 December 2003 22:37
	Re: Which Petrol is better	Lambolica	Sun, 28 December 2003 22:38
	Re: Which Petrol is better	manipulate	Sun, 28 December 2003 22:41
	Re: Which Petrol is better	Shraka	Mon, 29 December 2003 06:43
	Re: Which Petrol is better	speakafreaka	Mon, 29 December 2003 06:50
	Re: Which Petrol is better	ae86drift	Mon, 29 December 2003 08:33
	Re: Which Petrol is better	speakafreaka	Mon, 29 December 2003 08:39
	Re: Which Petrol is better	Shraka	Thu, 01 January 2004 15:28
	Re: Which Petrol is better	manipulate	Fri, 02 January 2004 00:20
	Re: Which Petrol is better	V8_MA61	Fri, 02 January 2004 00:54
	Re: Which Petrol is better	white83supra	Fri, 02 January 2004 07:13
	Re: Which Petrol is better	Shraka	Fri, 02 January 2004 02:48
	Re: Which Petrol is better	Shraka	Fri, 02 January 2004 13:38
	Re: Which Petrol is better	manipulate	Fri, 02 January 2004 14:16
	Re: Which Petrol is better	Shraka	Fri, 02 January 2004 14:39
	Re: Which Petrol is better	manipulate	Fri, 02 January 2004 15:40
	Re: Which Petrol is better	ed_ma61	Fri, 02 January 2004 15:48
	Re: Which Petrol is better	RobST162	Sun, 11 July 2004 03:47
	Re: Which Petrol is better	Shraka	Sat, 03 January 2004 04:16
	Re: Which Petrol is better	ae86drift	Sat, 03 January 2004 11:10
	Re: Which Petrol is better	oldcorollas	Sat, 03 January 2004 11:48
	Re: Which Petrol is better	Shraka	Sat, 03 January 2004 11:53
	Re: Which Petrol is better	manipulate	Sat, 03 January 2004 12:07
	Re: Which Petrol is better	oldcorollas	Sat, 03 January 2004 13:51
	Re: Which Petrol is better	oldcorollas	Sat, 03 January 2004 14:05
	Re: Which Petrol is better	purpleminiep	Sun, 04 January 2004 01:11
	Re: Which Petrol is better	Allan	Sun, 04 January 2004 01:57
	Re: Which Petrol is better	Shraka	Sun, 04 January 2004 03:32
	Re: Which Petrol is better	manipulate	Sun, 04 January 2004 03:34
	Re: Which Petrol is better	purpleminiep	Sun, 04 January 2004 03:40
	Re: Which Petrol is better	Son Gokou	Sun, 11 July 2004 05:41

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