similar story happened to me a long time ago in my supercharged GT. I limped my way back 300 miles home on a blown motor. 1 gas stop and 1 quart of oil added.
Well…. I blew it up…..
- Thread starter Yellow2003
- Start date
Sorry to hear...I loved the story...very neat...
yeah octane booster when the advertise it to be 1 or 2 points, it isnt actually 1 or 2 octane, its actually .1 or .2 octane, so you would need a serious amount of it to make a difference. your best bet is to keep some other type of fuel additive with you for long drive like that
MekkadonZ28
New Member
Wouldn't the car reduce timing if it sensed that it was detonating? Well, I guess if it was tuned, the knock sensors could have been desensitized/turned off.
I think that this was his main problem
If I saw that on my fuel pressure gauge I would cease and desist any WOT runs until that was fixed.....
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huh, dont like these threads...
how many miles when she blew?
we dont have knock sensors
Stock tune starts to pull timing over 100* downstream temp and/or over 200* ECT. Alot of tuners like to raise those values.
how many miles when she blew?
we dont have knock sensors
Stock tune starts to pull timing over 100* downstream temp and/or over 200* ECT. Alot of tuners like to raise those values.
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damn, if my cobra blew i would have to sell my GT to fix her because i dont have $8,000 bux. sorry to hear about your car
Man!! Horrible news brother!
Glad your now on the better side of it and getting her back. :beer:
Glad your now on the better side of it and getting her back. :beer:
Please fix your fuel delivery issues. Built engines can blow too.
BTW: 48 valves would be for a 4 valve per cylinder V12.
32 valves should be plenty for a V8.:-D
BTW: 48 valves would be for a 4 valve per cylinder V12.
32 valves should be plenty for a V8.:-D
Nope. These cars don't have knock sensors. That is why it is so imparatve that he get good tunes. The computer has no way of knowing if there is detonation. And Fuel Pressure was most likely not the issue, but detonation due to low Octane for your tune.
sorry to here about your misfortune. lesson well learned on high rpm ,high speed pulls!!! good luck on the new motor!!!:burnout::burnout:
MekkadonZ28
New Member
ahh I was just about to ask if they did have knock sensors in my previous post. That's wierd I wonder why they don't (especially on a factory FI car). Some goofball that knows nothing about cars, could put in 89 octane and BOOOOM.
Is it possible to install aftermarket knock sensors and actually have them work with our noisy engines?
Yes!!!:beer:
http://www.jandssafeguard.com/VampirePage/J&S_Vampire.html
There is a very good thread here
http://www.svtperformance.com/forums/showthread.php?t=313309&highlight=system+knock+sensor
and on modular fords
http://www.modularfords.com/forums/showthread.php?t=92292&highlight=Knock+Sensor+system
What was cause of engine failure? Best you can tell.
Answers to some of the questions:
The fuel pressure problem turned out to be the 'Fuel Pressure Relief Valve’ (or whatever it is called) A device in the fuel line that bleeds pressure of the fuel line by dumping fuel back into the tank. The valve opens at 55pdi give or take… In a high boost setup, the fuel line can hit that pressure on a WOT pull. The valve dumps the gas, and pressure drops.
The Octane Booster was not Torco but was specifically made for performance cars in low octane states. Not the best, but probably not my biggest issue.
The ’48 valves’ were either me doing math while sleepy…. Or I have opted for the super secret 6 valve mod ;-)
And about 98% sure it was the fuel pressure issue above that did the damage….
The fuel pressure problem turned out to be the 'Fuel Pressure Relief Valve’ (or whatever it is called) A device in the fuel line that bleeds pressure of the fuel line by dumping fuel back into the tank. The valve opens at 55pdi give or take… In a high boost setup, the fuel line can hit that pressure on a WOT pull. The valve dumps the gas, and pressure drops.
The Octane Booster was not Torco but was specifically made for performance cars in low octane states. Not the best, but probably not my biggest issue.
The ’48 valves’ were either me doing math while sleepy…. Or I have opted for the super secret 6 valve mod ;-)
And about 98% sure it was the fuel pressure issue above that did the damage….
Really sorry to hear that man, puts a little scare in me each time I read a thread like this. I feel your pain, I have had my fair share of automotive tragedy.
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