Straight 8 firing order?

"Jedidiah" (4barrel4speeddualexhaust) 03/15/2015 at 23:03 • Filed to: None

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What is the firing order in the title referring to?

BmanUltima's car still hasn't been fixed yet, he'll get on it tomorrow, honest. > Jedidiah 03/15/2015 at 23:05

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I think it's a buick V8 from the 40s.

CB > Jedidiah 03/15/2015 at 23:06

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Wikipedia says straight-8.

TopSirloin > Jedidiah 03/15/2015 at 23:08

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1-6-2-5-8-3-7-4.

Jedidiah > BmanUltima's car still hasn't been fixed yet, he'll get on it tomorrow, honest. 03/15/2015 at 23:09

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Doesn't make much sense for it to be a V8. The #6 and #2 cylinders would be on the same side unless they numbered the cylinders funny.

norskracer98-ExploringTheOutback > Jedidiah 03/15/2015 at 23:10

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SBC I think.

Jedidiah > CB 03/15/2015 at 23:12

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That's what I thought, but it's probably in reference to something specific.

BmanUltima's car still hasn't been fixed yet, he'll get on it tomorrow, honest. > Jedidiah 03/15/2015 at 23:13

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You're right. An inline 8 it is then. If you google the number the first few results are about Buicks, but it might apply to others as well.

Sdwarf36 -1 > Jedidiah 03/15/2015 at 23:28

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Staight 8 is the engine config. Like a straight 6-but with 2 more. Buick -Packard a few others had them.

samssun > Jedidiah 03/16/2015 at 00:04

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Cross plane V8s do fire the same bank twice in a row, which is what makes the American V8 "burble" (LRLL, RLRR). The flat plan fires an alternating LRLR pattern, trades away the cross plane's balance for less weight to rev, and doesn't sound like a V8 (think Ferrari scream).

Kevin Barrett > Jedidiah 03/16/2015 at 04:30

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Here's another notable straight 8, belonging to the 300 SLR Uhlenhaut Coupe:

Jedidiah > samssun 03/16/2015 at 13:05

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But the 1-6-2-5-8-3-7-4 would leave the #1 and #8 cylinder unopposed right after firing.

Wasn't thinking clearly enough to be realize cross planes fire on the same bank twice lol

Look at this Oldsmobile for example. #1 is opposed by #8 in the begining of the order and the #7 is opposed by #2 in the end and fires on the same bank twice to achieve this balance.