Volvo RWD 444-544 Forum

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Do I like them? YES. 444-544

posted by  B20Paul. on  Sat Aug 21 11:46 CST 2021
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last visit: Mon Oct 20 10:54 CST 2014
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Can you measure the length down the centreline to the beginning of the 2-1 joint please, particularly the 2-3 cylinders.

For mild to medium motors including those with twin DCOEs, i.e. - cam is up to 240°@.050", 0.300" lobe lift, the stock manifold is OK, these B18B Historik headers are better & 4-2-1 1.5"-1.75"-2" are best. I then like the 2" section to dump into a 2.5" after about 3 feet, 2.5" muffler after that.

The Swedes just go bigger & bigger with their 4-2-1 headers & I don't know why? Likewise the VPD copies are too big, really only suited for a supercharged motor.

If you have a strong motor with a big cam, 4-1 is the best choice.





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New B18 B20 Dual Downdraft Exhaust Manifolds [444-544]
posted by  West Coast 544  on Thu Dec 15 16:22 CST 2011 >


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