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Old 10-22-2003, 20:45   #1 (permalink)
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Question Safe to use an Octane booster???

I recently bought a used 2001 Ranger XLT x-cab 4door with the 3.0 liter. It is in great shape and with only 31,000 miles on it. I too recently experienced the octane ping while on the highway. I would like to know if I can use an octane booster with a higher octane gasoline and will it cure the problem? And will it be safe to use the off-the-shelf octane booster?
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Old 10-22-2003, 21:16   #2 (permalink)
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Re: Safe to use an Octane booster???

yes the octane booster is a safe alternative but that is an expensive way to try and fix a problem.
if you boost the octane the ping will more than likely go away but you get no garauntee.
actually i think the problem lies within the advance mechanism in the distributor.
ford tries to advance timing too far in an attempt to improve fuel milage and the fuel just keeps getting cheaper and cheaper.


i found proof !
my total timing should be around 35 degrees (or so i was told by a wise man)
so i checked this by buying a timing tape for my damper.
much to my surprise my total timing was almost 60 degrees at 2800 rpm.
now its time to do some modifications to the dist.
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Last edited by 351w; 10-22-2003 at 21:21.
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Old 10-22-2003, 21:27   #3 (permalink)
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Re: Safe to use an Octane booster???

LOL, I hate to do this to you again 351....but there is no distributor!! The new Rangers use a distributorless system, making it real difficult to alter the stock ignition timing settings. The advance/timing curve is computer controlled and unfortunately there's no way to change it without gaining access to the OBDII system.

Octane boost will help your problem, but consider it a temporary solution. Go to Ford and complain until they fix the problem as it does cause undue wear and tear on your engine.
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Old 10-22-2003, 21:36   #4 (permalink)
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Re: Safe to use an Octane booster???

Thanks to all for your help and information.
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Old 10-22-2003, 21:45   #5 (permalink)
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Re: Safe to use an Octane booster???

Quote:
Originally Posted by 351w
i found proof !
my total timing should be around 35 degrees (or so i was told by a wise man)
so i checked this by buying a timing tape for my damper.
much to my surprise my total timing was almost 60 degrees at 2800 rpm.
now its time to do some modifications to the dist.
If I were you, I'd use a timing light to check your total timing and go from there. From my experience, it's best to reach the total timing for your application by 3000 rpm.....but cam selection, compression ratio, etc. have an effect on what sort of curve you would want. It's pretty much a guess and check process until you feel you've gotten the best performance without audible knock.
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1992 Ford Bronco
351W
E4OD- B&M Stage 2 shift kit
Full 3" stainless Bassani Exhaust
32" BFG's/stock suspension

"No replacement for displacement."

"Our lugnuts require more torque than most Honda's produce!"
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Old 10-22-2003, 22:14   #6 (permalink)
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Re: Safe to use an Octane booster???

Quote:
Originally Posted by '92BigBronco
LOL, I hate to do this to you again 351....but there is no distributor!! .
actually i am aware of the distributorless ignitions but didnt think they were on the 91 ranger.
anyway that's why i have you around !
or atleast i give you something to do while your online.

about the timing light i did use a light on the timing tape and i know that 60 degrees total timing is way to much at any amount of throttle.
my total timing is all in by around 2000 to 2400 rpm because my cruise rpm is at 2600.
anyway i bought myself a vaccuum advance off a 69 mustang and i am gunna set the vaccuum advance back with that since it is adjustable.
i also emailed MSD tech and they recommended that i get a distributor without vac advance all together.
they are setup to give good performance but i am a little leary of what my milage might do.
much to your disbeleif i am not your average moran !
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Old 10-22-2003, 22:25   #7 (permalink)
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Re: Safe to use an Octane booster???

If it were a '91, I wouldn't have said anything, but it's a 2001.

Regarding your distributor, I do agree an electronic distributor would be best. Those mechanical parts tend to not give you much control over the timing curve.

And I don't think you're a moron. Loosen up!
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1992 Ford Bronco
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E4OD- B&M Stage 2 shift kit
Full 3" stainless Bassani Exhaust
32" BFG's/stock suspension

"No replacement for displacement."

"Our lugnuts require more torque than most Honda's produce!"
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Old 10-22-2003, 22:37   #8 (permalink)
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Re: Safe to use an Octane booster???

Quote:
Originally Posted by '92BigBronco
it's a 2001.


ahhh my mistake i should have gone to bed hrs ago.
12 1/2 hrs days at work tire me.
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