Octane/boost question:
Thread Starter
5th Gear Member
Joined: Dec 2005
Posts: 2,060
From: Okla.
RE: Octane/boost question:
ORIGINAL: BicketyBam
What? If he puts 87 or 89 in there he's nuts. Do you realize this is a boosted application we are talking about?
ORIGINAL: FoxGT
2 octane can make a difference. I set my timing based off of it. I managed to get 20 degrees without knock with 89 octane. I ran 87 in it & it started knocking @ high end.
What you could do is run the car almost out of gas, put $1 worth of 87 octane in it & go down the road if you hear no knock then you're definetly safe with all above. If you hear it, don't sweat it, just go back & fill it with $5 worth of 91, wait for it to run nearly out then try again with 89.
2 octane can make a difference. I set my timing based off of it. I managed to get 20 degrees without knock with 89 octane. I ran 87 in it & it started knocking @ high end.
What you could do is run the car almost out of gas, put $1 worth of 87 octane in it & go down the road if you hear no knock then you're definetly safe with all above. If you hear it, don't sweat it, just go back & fill it with $5 worth of 91, wait for it to run nearly out then try again with 89.
What? If he puts 87 or 89 in there he's nuts. Do you realize this is a boosted application we are talking about?
Not to mention its not nearly as easy to adjust timing on the fly like that in a coilpack car.. We cant just break out the light and adjust our timing at will, especally when you have any type of external chip in the car... Distributor based cars are much different to work on and adjust.
2nd Gear Member
Joined: Feb 2006
Posts: 355
From: Maryland
5th Gear Member
Joined: Apr 2005
Posts: 3,584
From: CT
RE: Octane/boost question:
There are two setting on the Snow control unit. One is the initial PSI setting where it spays 50%. The second setting is the PSI where it goes to 100%. I want to say it's 2 and 8, but I don't remember. But the car won't make boost unless the pedal is pushed to the floor. So just keep mashing it and you will be spraying! And be sure to keep that reservoir full!
4th Gear Member
Joined: Oct 2006
Posts: 1,541
From: Durham, NC
RE: Octane/boost question:
i think i remember reading in the manual we all got with our cars that altitude affects the overall rating of the gasoline in the engine, it be worth checking out...not completly sure on how that works...and im no where close to my manual which is a 50 min drive away
1st Gear Member
Joined: Sep 2006
Posts: 126
From:
RE: Octane/boost question:
I'm fairly sure that nobody ever blew a head gasket or holed a piston during a part throttle upshift.
Slight ping at part throttle doesn't cause damage. There's minimal cylinder pressure. It's the hot boost and heavy engine load that makes for potential trouble. Compressing air makes it hotter, that's where the methanol injection is needed. You can run some water in that if you're worried.
Start with half water/half washer fluid. That should be super safe. It might make a bit less power
though. You might also just add some octane boost at each fill up. It's better than popping the motor right?
Slight ping at part throttle doesn't cause damage. There's minimal cylinder pressure. It's the hot boost and heavy engine load that makes for potential trouble. Compressing air makes it hotter, that's where the methanol injection is needed. You can run some water in that if you're worried.
Start with half water/half washer fluid. That should be super safe. It might make a bit less power
though. You might also just add some octane boost at each fill up. It's better than popping the motor right?
2nd Gear Member
Joined: Feb 2006
Posts: 355
From: Maryland
RE: Octane/boost question:
Have you ever had ping or detonation?
When this happens, what do you do?
You let off. Hopefully...
What happens if you keep you foot in it?
Is this fun or OK? Hardly.
When it's hot and I get some bad gas that is exactly what happens. If I start getting some ping I get out of it. If I don't get out of it right away it gets much worse in a hurry. And yes, I mean before it gets into boost. Would it blow something? I'm not finding out.
And it's a real bummer when you have your girl with you and you next to a camero.
When this happens, what do you do?
You let off. Hopefully...
What happens if you keep you foot in it?
Is this fun or OK? Hardly.
When it's hot and I get some bad gas that is exactly what happens. If I start getting some ping I get out of it. If I don't get out of it right away it gets much worse in a hurry. And yes, I mean before it gets into boost. Would it blow something? I'm not finding out.
And it's a real bummer when you have your girl with you and you next to a camero.
ORIGINAL: threeg502
I'm fairly sure that nobody ever blew a head gasket or holed a piston during a part throttle upshift.
Slight ping at part throttle doesn't cause damage. There's minimal cylinder pressure. It's the hot boost and heavy engine load that makes for potential trouble. Compressing air makes it hotter, that's where the methanol injection is needed. You can run some water in that if you're worried.
Start with half water/half washer fluid. That should be super safe. It might make a bit less power
though. You might also just add some octane boost at each fill up. It's better than popping the motor right?
I'm fairly sure that nobody ever blew a head gasket or holed a piston during a part throttle upshift.
Slight ping at part throttle doesn't cause damage. There's minimal cylinder pressure. It's the hot boost and heavy engine load that makes for potential trouble. Compressing air makes it hotter, that's where the methanol injection is needed. You can run some water in that if you're worried.
Start with half water/half washer fluid. That should be super safe. It might make a bit less power
though. You might also just add some octane boost at each fill up. It's better than popping the motor right?
2nd Gear Member
Joined: Feb 2006
Posts: 355
From: Maryland
RE: Octane/boost question:
There several ways that snow kits can be set up to activate. He said his sprays only at WOT. This is not where he is likely to have problems.
I can't speak for a centrifugal blower, but my screw most certainly can make boost without being floored.
I can't speak for a centrifugal blower, but my screw most certainly can make boost without being floored.
ORIGINAL: BicketyBam
There are two setting on the Snow control unit. One is the initial PSI setting where it spays 50%. The second setting is the PSI where it goes to 100%. I want to say it's 2 and 8, but I don't remember. But the car won't make boost unless the pedal is pushed to the floor. So just keep mashing it and you will be spraying! And be sure to keep that reservoir full!
There are two setting on the Snow control unit. One is the initial PSI setting where it spays 50%. The second setting is the PSI where it goes to 100%. I want to say it's 2 and 8, but I don't remember. But the car won't make boost unless the pedal is pushed to the floor. So just keep mashing it and you will be spraying! And be sure to keep that reservoir full!
1st Gear Member
Joined: Sep 2006
Posts: 126
From:
RE: Octane/boost question:
ORIGINAL: Justastockmustang
Have you ever had ping or detonation?
When this happens, what do you do?
You let off. Hopefully...
What happens if you keep you foot in it?
Is this fun or OK? Hardly.
When it's hot and I get some bad gas that is exactly what happens. If I start getting some ping I get out of it. If I don't get out of it right away it gets much worse in a hurry. And yes, I mean before it gets into boost. Would it blow something? I'm not finding out.
And it's a real bummer when you have your girl with you and you next to a camero.
Have you ever had ping or detonation?
When this happens, what do you do?
You let off. Hopefully...
What happens if you keep you foot in it?
Is this fun or OK? Hardly.
When it's hot and I get some bad gas that is exactly what happens. If I start getting some ping I get out of it. If I don't get out of it right away it gets much worse in a hurry. And yes, I mean before it gets into boost. Would it blow something? I'm not finding out.
And it's a real bummer when you have your girl with you and you next to a camero.
ORIGINAL: threeg502
I'm fairly sure that nobody ever blew a head gasket or holed a piston during a part throttle upshift.
Slight ping at part throttle doesn't cause damage. There's minimal cylinder pressure. It's the hot boost and heavy engine load that makes for potential trouble. Compressing air makes it hotter, that's where the methanol injection is needed. You can run some water in that if you're worried.
Start with half water/half washer fluid. That should be super safe. It might make a bit less power
though. You might also just add some octane boost at each fill up. It's better than popping the motor right?
I'm fairly sure that nobody ever blew a head gasket or holed a piston during a part throttle upshift.
Slight ping at part throttle doesn't cause damage. There's minimal cylinder pressure. It's the hot boost and heavy engine load that makes for potential trouble. Compressing air makes it hotter, that's where the methanol injection is needed. You can run some water in that if you're worried.
Start with half water/half washer fluid. That should be super safe. It might make a bit less power
though. You might also just add some octane boost at each fill up. It's better than popping the motor right?
at smaller throttle openings. I'd have sometiming pulled in that area. How often do you get bad gas anyway? I'm not being sarcastic. Did they say which setup HaV is running?(Centri or Screw)
5th Gear Member
Joined: Jul 2003
Posts: 3,451
From: United States
RE: Octane/boost question:
ORIGINAL: BicketyBam
What? If he puts 87 or 89 in there he's nuts. Do you realize this is a boosted application we are talking about?
ORIGINAL: FoxGT
2 octane can make a difference. I set my timing based off of it. I managed to get 20 degrees without knock with 89 octane. I ran 87 in it & it started knocking @ high end.
What you could do is run the car almost out of gas, put $1 worth of 87 octane in it & go down the road if you hear no knock then you're definetly safe with all above. If you hear it, don't sweat it, just go back & fill it with $5 worth of 91, wait for it to run nearly out then try again with 89.
2 octane can make a difference. I set my timing based off of it. I managed to get 20 degrees without knock with 89 octane. I ran 87 in it & it started knocking @ high end.
What you could do is run the car almost out of gas, put $1 worth of 87 octane in it & go down the road if you hear no knock then you're definetly safe with all above. If you hear it, don't sweat it, just go back & fill it with $5 worth of 91, wait for it to run nearly out then try again with 89.
ORIGINAL: HaV
Not to mention its not nearly as easy to adjust timing on the fly like that in a coilpack car.. We cant just break out the light and adjust our timing at will, especally when you have any type of external chip in the car... Distributor based cars are much different to work on and adjust.
Not to mention its not nearly as easy to adjust timing on the fly like that in a coilpack car.. We cant just break out the light and adjust our timing at will, especally when you have any type of external chip in the car... Distributor based cars are much different to work on and adjust.
I didn't adjust my timing at all to get it to run with 89. I adjusted the octane to see if it would work with my timing.
5th Gear Member
Joined: Jul 2005
Posts: 2,450
From:
RE: Octane/boost question:
is it tuned for 93 AND meth injection? if so get it retuned. if it's just tuned for 93 the meth injection will make up the difference but i would be carefully listening for any detonation. also if it was tuned for the meth injection make sure you are running exactly what bickety was running (at least until you get it tuned)...if the mixture is off it could be disasterous. if you have a track or a fuel supply near you buy 5 gals of straight methanol. then mix it 50/50 with distilled water. it is the most reliable way and usually the cheapest. i get it for $3/gal at the track...a 5 gal container lasted all summer and i have two huge nozzles that fully activate at 6psi. although i didn't drive it everyday