 Factory six header diameter |
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| retrotech |
 Aug 1 2005, 10:55 PM
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#1
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retrotech  Group: Members Posts: 470 Joined: 2-November 03 From: Mosier, Oregon Member No.: 1,302  |
Does anyone know the diameter of stock 6 cyl. exchangers?
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| Maltese Falcon |
Aug 1 2005, 11:15 PM
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#2
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914 Guru Group: Members Posts: 5,049 Joined: 14-September 04 From: Mulholland SoCal Member No.: 2,755 Region Association: None  |
should be eqivalent to 1.375" (ID) just convert to mm. This would be 1.5" ( OD), just minus the 1/16" wall dia. of the tube. You can proll'y get away with up to 2.7L
street engine with OE Hboxes...anything larger in displacement will be will be like breathing thru a straw. (IMG:http://www.914world.com/bbs2/html/emoticons/mad.gif) MF |
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| retrotech |
Aug 2 2005, 01:01 AM
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#3
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retrotech Group: Members Posts: 470 Joined: 2-November 03 From: Mosier, Oregon Member No.: 1,302 |
Thanks, that is what I was looking for. So do you think 1 1/2" will give me any incease performance, or should I go 1 5/8? I have a 2.8. with 46mm carbs, 10.3 to 1 compression.
I appreciate any input. |
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| Maltese Falcon |
Aug 2 2005, 09:11 PM
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#4
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914 Guru Group: Members Posts: 5,049 Joined: 14-September 04 From: Mulholland SoCal Member No.: 2,755 Region Association: None |
Retro, the HBs will limit the peak performance of that bad ol 2.8. I strongly suggest the 1.625" OD (1 5/8"). PM me if you want a new header set in the box (we are having a 914club summer sale), or clicky link to our site below.
Marty |
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| retrotech |
Aug 2 2005, 09:48 PM
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#5
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retrotech Group: Members Posts: 470 Joined: 2-November 03 From: Mosier, Oregon Member No.: 1,302 |
Marty,
Where is the link? |
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| Joe Bob |
Aug 2 2005, 10:08 PM
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#6
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
Isn't 1 5/8 OD, 1.5 ID |
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