 What grade gas do you use?, In your teener |
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| 442nd914s |
 Dec 7 2012, 09:30 AM
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#61
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Member  Group: Members Posts: 139 Joined: 25-July 12 From: KC Suburb Member No.: 14,718 Region Association: None  |
What if you're running an MSD system on a original FI '73 2.0lt? I just had mine rebuilt to a 2056 and will be crancking it up soon after 20 yrs of rest. What grade should I start it at and for how long?
New rings, cylinders, redone heads, MDS coil, wires, plugs, Plantronix .......kitchen sink wouldnt fit. |
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| VaccaRabite |
Dec 7 2012, 03:52 PM
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#62
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En Garde! Group: Admin Posts: 13,458 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Always run the lowest grade gas that does not cause your engine to ping.
My 2056 needed 93oct gas when it was at 9.2:1 compression. Its new form will be 8.6:1 compression and I will need to determine what grade gas to use when its running. If it does not ping on 87, thats what I will be using. Remember, the lower the octane, the more energy the fuel has. Zach |
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| Robert21 |
Dec 9 2012, 03:07 PM
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#63
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ron21 Group: Members Posts: 288 Joined: 9-July 04 From: Seal Beach Ca 90630 Orange co Member No.: 2,330 Region Association: None 
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Do what makes you feel better. I will sent my money on other things. 87 for 9 .
years . Runs fine . |
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| SirAndy |
Dec 9 2012, 03:44 PM
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#64
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Resident German Group: Admin Posts: 41,670 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
At 11.3:1 compression, i always look for the highest octane i can get. Around here, that is 91.
(IMG:style_emoticons/default/driving.gif) |
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| gunny |
Dec 9 2012, 03:54 PM
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#65
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Member Group: Members Posts: 205 Joined: 17-October 12 From: Madison Al Member No.: 15,051 Region Association: South East States |
87 octane here
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| jersey914 |
Dec 9 2012, 06:14 PM
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#66
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Member Group: Members Posts: 161 Joined: 6-September 12 From: Marlton, NJ Member No.: 14,895 Region Association: North East States |
QUOTE(SirAndy @ Dec 9 2012, 04:44 PM)  At 11.3:1 compression, i always look for the highest octane i can get. Around here, that is 91. (IMG:style_emoticons/default/driving.gif) Andy, what do I need to do to find the compression #s on my 2.0? Just wondering....I run 91 in mine and it seems to run great. It's been worked a bit so I doubt it is standard compression. |
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| VaccaRabite |
Dec 9 2012, 07:10 PM
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#67
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En Garde! Group: Admin Posts: 13,458 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Jersey - you would have to pull the heads off and CC them. Its somehting you do when building the engine in the first place.
if it runs great, just go with it! Zach |
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| SirAndy |
Dec 9 2012, 07:37 PM
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#68
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Resident German Group: Admin Posts: 41,670 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(jersey914 @ Dec 9 2012, 04:14 PM) what do I need to do to find the compression #s on my 2.0? Just wondering....I run 91 in mine and it seems to run great. It's been worked a bit so I doubt it is standard compression. If it's a stock motor, the compression should be 7.6:1 If it's not stock, Zach already said it, you'll need to cc the heads. (IMG:style_emoticons/default/popcorn[1].gif) |
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