Yep.....something is sure causing it.
Skip
----- Original Message -----
From: "Dave Dahlgren" <dahlgren536@comcast.net>
To: "Skip Higginbotham" <saltrat@pahrump.com>; "Kirkwood"
<saltfever@comcast.net>; <land-speed@autox.team.net>
Sent: Friday, June 03, 2011 13:33
Subject: Re: [Land-speed] BBC Firing order
> Or a better designed manifold....
> ----- Original Message -----
> From: "Skip Higginbotham" <saltrat@pahrump.com>
> To: "Kirkwood" <saltfever@comcast.net>; <land-speed@autox.team.net>
> Sent: Friday, June 03, 2011 4:31 PM
> Subject: Re: [Land-speed] BBC Firing order
>
>
>>I think of the crank as a long torsion bar as you suggest but with a
>>difference, the more the crank twists, end to end, the farther the cam
>>gets out of position and the farther the valve timing is off. So if the
>>major part of the torsioning force is closer to the cam drive the timing
>>won't be as far off.
>> The port nozzle in 7 is smaller than in 5 (and the rest) due to plennum
>> air taken away from 7 by 5 and this probably has more to do with it than
>> anything else. This can be helped by a little longer intake valve opening
>> on 7.
>> Skip
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