Actually there are some formulas to determine the correct tube diameter, and
Head to collector length. It's based on the cam timing, cumbustion chamber
volume, C.R., and head flow characteristics. It's been a very long time since I
did any of these and have forgotten all of the dynamics. As I remeber, and I
may be way off on this, with fairly stock parts to mild built parts, the headers
should contain (volume from head to colector) of about 2/3 of the expanded
gasses...I'm sure somebody has some commerciaal software out there to do this
dynamically for you. Mr. Gasket has some cool software for building and
designing engines, so someone should have what you are looking for.
Rich
-----Original Message-----
From: Jim Parent <jparent@yahoo.com>
To: tigers@autox.team.net <tigers@autox.team.net>
Date: Tuesday, July 28, 1998 7:07 AM
Subject: RE: headers and fan
>Typical performance Ford books note that 1 5/8" primary tube headers
>are a fairly close match to the port size and should work just fine.
>If SS's are 1 1/2" I'd guess that's close enought so that it won't be
>your biggest issue. BTW, the same books normally note that primary
>tubes oughta be about 30" to 40" long and that both selections are not
>an exact science.
>
>Regards,
>
>Jim
>B9470139
>
>
>---Frank Marrone <marrone@wco.com> wrote:
>>
>> The one "problem" I know of with Ricks headers are that they have a
>relatively small primary size, 1 1/2 inch I think. This is not large
>enough for big power. I have a set of Ricks headers that I will use.
>I'm sure they will be fine for me.
>>
>> ----------
>> From: Gary A Winblad[SMTP:gary_winblad@juno.com]
>> Sent: Sunday, July 12, 1998 6:55 PM
>> To: larisab@ix15.ix.netcom.com
>> Cc: tigers@autox.team.net
>> Subject: Re: headers and fan
>>
>>
>> On Sun, 12 Jul 1998 08:09:48 -0400 Alicia <larisab@ix15.ix.netcom.com>
>> writes:
>> >listers
>> >not long ago there was a tread on headers but Alicia has been doing
>>
>> Dan,
>> I just put Sunbeam Specialties headers on my car,
>> Paul Reisentz put them in and reported no problems in
>> fitting them, they look like they clear everything except
>> the oil filter adapter.. the stock one clears fine but
>> anything else probably won't. Paul has a special technique
>> to adapt the stock block adapter to the stainless steel
>> oil lines.
>> Gary
>>
>>
>>
>>
>
|