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Corvette Forum Archive (38 950 posts)
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Subject:
Re: Octane boost brand
From: Bob I <birelan(at)yahoo.com>
Subject: Re: Octane boost brand
Lines: 36
Date: Sat, 24 Sep 2005 08:51:21 -0500
________________________________________________
There have been some comparison tests done(on the net if you search)
using various brands of booster, gas octane mixing and av gas cutting.
The "points" of increase that the "octane boosters" give are in
"tenths". In other words, if a bottle of the stuff is claming 3 points
increase in octane at a given mix ratio, you will go from 91.0 to 91.3,
so now compare what you got for your dollar.
Barking Rats wrote:
> In article <1127538979.795543.158050(at)o13g2000cwo.googlegroups.com>,
> "benf802961(at)aol.com" <benf802961(at)aol.com> wrote:
>
>
>>95% of Octane Booster is just snake oil.
>>It won`t hurt anything but your pocketbook.
>
>
> Is this a personal opinion or can you cite any reference material I
> might be able to look at?
>
> As I mentioned, I`m not after the boost as much as the lead substitution
> and fuel stabilization qualities. 94 octane unleaded seems to do OK in
> my 427 - though i don`t get my foot in it very hard, very often.
>
> Here`s waving to ya - ||||
>
> Owen
> ___
>
> `67BB & `72BB
>
> -- not affiliated with JLA forum in any way -- alt.autos.corvette is
> original posting --
> ___
>
> "To know the world intimately is the beginning of caring."
> -- Ann Hayman Zwinger
From: "Tom in Missouri" <toomuch(at)spam.com>
Subject: Re: Octane boost brand
Lines: 67
Date: Sat, 24 Sep 2005 14:26:49 GMT
NNTP-Posting-Host: 69.34.141.104
________________________________________________
All the good stuff disappeared 20-25 years ago because of EPA regulations.
The lead you get is so miniscule that nothing happens except the seller gets
rich.
You will be dollars ahead to simply locate some real higher octane racing
fuel and mix a bit of it even at the $5, $6, or $7 a gallon it will run. If
I remember right, I think you said once you were in NJ. With Flemington
Racetrack and Englishtown basically in distance to most, there have to be
some racers around who can tell you where to find racing gas or could
probably be talked into hauling you back 5 or 10 gallons from their weekend
at the track.
A gallon of 114 leaded racing will bring 10 gallons of 94 up to roughly 96
octane.
That is more than adequate for your 427 if it is stock. The octane
requirements in your owners book are Research numbers. Today`s octane is
R+M, which is the average of Research and Motor combined. So if the gas was
87 Motor and 93 Research, you`d have 90 R+M today. So 94 R+M that you are
using is equivalent to around 97 Research. Unless you are running the 12.5
to 1 engine, you should be fine on 97 Research.
If you are getting pinging, then likely the ignition is not set right. That
is not just the initial timing, but the entire curve. Check your total
timing, how the curve comes in, and so on.
Lead is highly overrated.
In the typical lead-era small block and big block, if it would go 100,000
miles before having to do a valve job, then it will go roughly 75-80,000 on
the unlead, based on stock spring pressures and proper valve adjustment.
Wrong springs and too loose of adjustment will destroy the heads much faster
than no lead.
How long will it take you to put 75,000 miles on your Corvette?
"Barking Rats" <noemails(at)myemail.com> wrote in message
news:noemails-4C0093.23395623092005(at)corp.supernews.com...
> In article <1127538979.795543.158050(at)o13g2000cwo.googlegroups.com>,
> "benf802961(at)aol.com" <benf802961(at)aol.com> wrote:
>
>> 95% of Octane Booster is just snake oil.
>> It won`t hurt anything but your pocketbook.
>
> Is this a personal opinion or can you cite any reference material I
> might be able to look at?
>
> As I mentioned, I`m not after the boost as much as the lead substitution
> and fuel stabilization qualities. 94 octane unleaded seems to do OK in
> my 427 - though i don`t get my foot in it very hard, very often.
>
> Here`s waving to ya - ||||
>
> Owen
> ___
>
> `67BB & `72BB
>
> -- not affiliated with JLA forum in any way -- alt.autos.corvette is
> original posting --
> ___
>
> "To know the world intimately is the beginning of caring."
> -- Ann Hayman Zwinger
From: PJ <pj4380(at)yahoo.com>
Subject: Re: Octane boost brand
Lines: 82
Date: Sat, 24 Sep 2005 08:58:22 -0700
NNTP-Posting-Host: 68.6.135.254
________________________________________________
Tom in Missouri wrote:
> All the good stuff disappeared 20-25 years ago because of EPA regulations.
> The lead you get is so miniscule that nothing happens except the seller gets
> rich.
>
> You will be dollars ahead to simply locate some real higher octane racing
> fuel and mix a bit of it even at the $5, $6, or $7 a gallon it will run. If
> I remember right, I think you said once you were in NJ. With Flemington
> Racetrack and Englishtown basically in distance to most, there have to be
> some racers around who can tell you where to find racing gas or could
> probably be talked into hauling you back 5 or 10 gallons from their weekend
> at the track.
>
> A gallon of 114 leaded racing will bring 10 gallons of 94 up to roughly 96
> octane.
>
> That is more than adequate for your 427 if it is stock. The octane
> requirements in your owners book are Research numbers. Today`s octane is
> R+M, which is the average of Research and Motor combined. So if the gas was
> 87 Motor and 93 Research, you`d have 90 R+M today. So 94 R+M that you are
> using is equivalent to around 97 Research. Unless you are running the 12.5
> to 1 engine, you should be fine on 97 Research.
>
> If you are getting pinging, then likely the ignition is not set right. That
> is not just the initial timing, but the entire curve. Check your total
> timing, how the curve comes in, and so on.
>
> Lead is highly overrated.
>
> In the typical lead-era small block and big block, if it would go 100,000
> miles before having to do a valve job, then it will go roughly 75-80,000 on
> the unlead, based on stock spring pressures and proper valve adjustment.
> Wrong springs and too loose of adjustment will destroy the heads much faster
> than no lead.
>
> How long will it take you to put 75,000 miles on your Corvette?
>
>
> "Barking Rats" <noemails(at)myemail.com> wrote in message
> news:noemails-4C0093.23395623092005(at)corp.supernews.com...
>
>>In article <1127538979.795543.158050(at)o13g2000cwo.googlegroups.com>,
>>"benf802961(at)aol.com" <benf802961(at)aol.com> wrote:
>>
>>
>>>95% of Octane Booster is just snake oil.
>>>It won`t hurt anything but your pocketbook.
>>
>>Is this a personal opinion or can you cite any reference material I
>>might be able to look at?
>>
>>As I mentioned, I`m not after the boost as much as the lead substitution
>>and fuel stabilization qualities. 94 octane unleaded seems to do OK in
>>my 427 - though i don`t get my foot in it very hard, very often.
>>
>>Here`s waving to ya - ||||
>>
>>Owen
>>___
>>
>>`67BB & `72BB
>>
>>-- not affiliated with JLA forum in any way -- alt.autos.corvette is
>>original posting --
>>___
>>
>>"To know the world intimately is the beginning of caring."
>> -- Ann Hayman Zwinger
>
>
>
Hi Tom,
I switched to unleaded and had "vanishing lash" from seat
recession in a 914-6 daily driver (aluminum heads with ferrous
seats--not stellite though). Was measurable on two valve lash
adjustments over about 12,000 miles (when we pulled the heads). Had
the heads reworked with hardened valve seats--then no problem.
Agree though that cast iron heads and hydraulic lifters should
help minimize the problem.
Cam grind is also a player along with spring tension.
PJ
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