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SVTPerformance's Chain of Restaurants
The Distillery
Pulling timing with high intake temps on E85?
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<blockquote data-quote="MalcolmV8" data-source="post: 14524908" data-attributes="member: 8854"><p>Humm that makes no sense. Something else had to be going on. Like you just put a fresh full tank of fuel in (cold from underground tank at station) and it hadn't warmed the fuel yet. Or you have a massive fuel cooler with a powerful fan pulling heat from your fuel. Or your car hadn't been running very long and the fuel in the tank was still cool.</p><p></p><p>Like I said I've done a lot of testing on this and I know for a fact regardless of E85 or pump gas the rails will heat to scolding hot, 200+ F, and the fuel inside the tank is that temperature. You can check the fuel lines, the fuel filter etc.</p><p>It makes sense too. You circulate the fuel around the motor and back to the tank and repeat over and over you've essentially created a powerful hot water heater but with your fuel system. Eventually the entire gas tank is completely heat soaked and the same temp as the engine.</p><p>That's the whole reason I switched my return system to a dead head. It dropped my fuel temps by over 100F as you probably saw in that link I posted. That's fuel in the tank, lines, FPR. The fuel going up to the rails in the dead head configuration still get very hot. Not as hot as before but still hit around 160F as I recall. It varies in dead head because slow cruise or idling means the fuel sits in the rails longer getting heated where as more aggressive driving consuming gas at a much more rapid rate won't sit as long in the rails... plus the faster driving has more air flow in the engine bay which probably helps.</p><p></p><p>The only way I'd get cool rails after the car was heat soaked like you pointed out is if we pulled into a gas station and filled up. The rails, fuel filter, FPR, and lines would all have a much cooler feel till the engine heated all that back up too. Like I said the majority of my fuel heat tests were done on E85.</p><p></p><p>If you're experiencing cool fuel rails once fully heat soaked and driving around for a bit on 90 degree days I think we'd all like to know your secret <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p></blockquote><p></p>
[QUOTE="MalcolmV8, post: 14524908, member: 8854"] Humm that makes no sense. Something else had to be going on. Like you just put a fresh full tank of fuel in (cold from underground tank at station) and it hadn't warmed the fuel yet. Or you have a massive fuel cooler with a powerful fan pulling heat from your fuel. Or your car hadn't been running very long and the fuel in the tank was still cool. Like I said I've done a lot of testing on this and I know for a fact regardless of E85 or pump gas the rails will heat to scolding hot, 200+ F, and the fuel inside the tank is that temperature. You can check the fuel lines, the fuel filter etc. It makes sense too. You circulate the fuel around the motor and back to the tank and repeat over and over you've essentially created a powerful hot water heater but with your fuel system. Eventually the entire gas tank is completely heat soaked and the same temp as the engine. That's the whole reason I switched my return system to a dead head. It dropped my fuel temps by over 100F as you probably saw in that link I posted. That's fuel in the tank, lines, FPR. The fuel going up to the rails in the dead head configuration still get very hot. Not as hot as before but still hit around 160F as I recall. It varies in dead head because slow cruise or idling means the fuel sits in the rails longer getting heated where as more aggressive driving consuming gas at a much more rapid rate won't sit as long in the rails... plus the faster driving has more air flow in the engine bay which probably helps. The only way I'd get cool rails after the car was heat soaked like you pointed out is if we pulled into a gas station and filled up. The rails, fuel filter, FPR, and lines would all have a much cooler feel till the engine heated all that back up too. Like I said the majority of my fuel heat tests were done on E85. If you're experiencing cool fuel rails once fully heat soaked and driving around for a bit on 90 degree days I think we'd all like to know your secret ;) [/QUOTE]
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SVTPerformance's Chain of Restaurants
The Distillery
Pulling timing with high intake temps on E85?
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