 Unleaded vs Premium |
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| Neal |
 Sep 8 2003, 01:24 PM
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#1
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Member  Group: Members Posts: 300 Joined: 23-April 03 From: Sammamish, Washington Member No.: 605  |
I wanted to know for a engine developed in the 70's and rebuilt in the 2000's do you think 4 octane points higher makes a difference on how the engine performs as a daily driver ?
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| SirAndy |
Sep 8 2003, 08:15 PM
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#2
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Resident German Group: Admin Posts: 42,483 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
now if i understand the whole thing right (which i might not) then using higher octane rated fuel WITHOUT any engine modifications that increase compression, is a complete waste of money.
the higher the octane number, the more you can compress the gas before it ignites itself (pre-detonation, VERY bad for your car). but, if you have a stock 1.7 that was rated for 91 from the factory, filling it up with 98 is not going to do you any good. it might even hurt the engine. going over 100 or using race-gas in a 7.3:1 engine SHOULD NOT make it run better. anyone? Andy |
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Posts in this topic
Neal Unleaded vs Premium Sep 8 2003, 01:24 PM
redshift Yep! 2.0s hate premium, runs cold.
M Sep 8 2003, 01:27 PM aufaber OH! That poor F4i! :o
-Aaron G. Sep 8 2003, 02:24 PM tat2dphreak <... Sep 8 2003, 02:28 PM redshift I don't remember the 1.8 not liking it.
Injec... Sep 8 2003, 02:45 PM Neal My car has webers and I live in Seattle, would pre... Sep 8 2003, 02:52 PM redshift I don't know.
Washington has boutique fuels, ... Sep 8 2003, 03:03 PM ChrisReale Premium is the expensive shit, right? Thats all I... Sep 8 2003, 03:14 PM tat2dphreak I used premium in my carbbed 1.7... and I wonder i... Sep 8 2003, 03:42 PM p914 <... Sep 8 2003, 04:10 PM p914 <... Sep 8 2003, 04:12 PM aufaber Sep 8 2003, 04:34 PM
redshift
redshift Sep 8 2003, 04:44 PM
p914 <... Sep 8 2003, 04:47 PM
Andyrew Redshift, your saying use the cheepo stuff?
Andr... Sep 8 2003, 04:53 PM
redshift Look in your owners manual.
:trophy:
And with ... Sep 8 2003, 05:04 PM
Andyrew Hehe, I have about 5 workshop manuals, but not the... Sep 8 2003, 05:43 PM
redshift :)
and I can't sleep so...
1.7 (early) 98 R... Sep 8 2003, 05:49 PM
redshift Googlectomy! There is the whole thing in a pag... Sep 8 2003, 05:52 PM
Bleyseng Hmm, thats not what I have read before. DD posted ... Sep 8 2003, 06:05 PM
Aaron Cox
p914 <... Sep 8 2003, 04:47 PM Andyrew Redshift, your saying use the cheepo stuff?
Andr... Sep 8 2003, 04:53 PM redshift Look in your owners manual.
:trophy:
And with ... Sep 8 2003, 05:04 PM Andyrew Hehe, I have about 5 workshop manuals, but not the... Sep 8 2003, 05:43 PM redshift :)
and I can't sleep so...
1.7 (early) 98 R... Sep 8 2003, 05:49 PM redshift Googlectomy! There is the whole thing in a pag... Sep 8 2003, 05:52 PM Bleyseng Hmm, thats not what I have read before. DD posted ... Sep 8 2003, 06:05 PM Aaron Cox Sep 8 2003, 07:11 PM
PatW Union 76 sells 100 Octane Unleaded here in San Jos... Sep 8 2003, 07:15 PM
swood premium is going for a premium down here right now... Sep 8 2003, 07:25 PM
ArtechnikA <... Sep 8 2003, 07:26 PM
redshift I dunno why it so different for everyone else. I... Sep 8 2003, 07:43 PM
p914 according to PP spec sheet, my 2.0 should be runni... Sep 8 2003, 07:45 PM
kdfoust I put prem in my 72 1.7. Never tried regular or ... Sep 8 2003, 08:04 PM
redshift 87 plain old pump gas is roughly 92 RON.
So..
:)... Sep 8 2003, 08:08 PM
p914 Wish they had 100 here in WA at the regular pumps ... Sep 8 2003, 08:12 PM
seanery I'm gonna hijack a little here:
Will there be... Sep 8 2003, 08:13 PM
p914 <... Sep 8 2003, 08:14 PM
redshift Kevin, your 72 an early one? Spec is 93 octane.
A... Sep 8 2003, 08:19 PM
redshift
PatW Union 76 sells 100 Octane Unleaded here in San Jos... Sep 8 2003, 07:15 PM swood premium is going for a premium down here right now... Sep 8 2003, 07:25 PM ArtechnikA <... Sep 8 2003, 07:26 PM redshift I dunno why it so different for everyone else. I... Sep 8 2003, 07:43 PM p914 according to PP spec sheet, my 2.0 should be runni... Sep 8 2003, 07:45 PM kdfoust I put prem in my 72 1.7. Never tried regular or ... Sep 8 2003, 08:04 PM redshift 87 plain old pump gas is roughly 92 RON.
So..
:)... Sep 8 2003, 08:08 PM p914 Wish they had 100 here in WA at the regular pumps ... Sep 8 2003, 08:12 PM seanery I'm gonna hijack a little here:
Will there be... Sep 8 2003, 08:13 PM p914 <... Sep 8 2003, 08:14 PM redshift Kevin, your 72 an early one? Spec is 93 octane.
A... Sep 8 2003, 08:19 PM redshift Sep 8 2003, 08:22 PM
p914 <... Sep 8 2003, 08:28 PM
Bleyseng here is the compression ratio chart for all the ye... Sep 8 2003, 08:53 PM
Drums66 <... Sep 8 2003, 11:05 PM
redshift No, the 1.7 that burned was spec'ed for 98 RON... Sep 9 2003, 06:09 AM
p914 <... Sep 8 2003, 08:28 PM Bleyseng here is the compression ratio chart for all the ye... Sep 8 2003, 08:53 PM Drums66 <... Sep 8 2003, 11:05 PM redshift No, the 1.7 that burned was spec'ed for 98 RON... Sep 9 2003, 06:09 AM |
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