FS: 1 5/8" Cyclone Anti-Reversionary Headers, and Heater Boxes - Hard to Find!

[greggearhead]

Set of excellent condition 1 5/8" diameter headers with the S-pipe heater boxes that are great for allowing some cold morning chill removal and defrost use, even in a track car.

Antireversionary headers were never super popular because of the cost of construction - the anti-reversion cone at the head flange being the hardest part. It reduces the exhaust reversion pulse running back toward the exhaust valve, which makes top-end heavy cams a little less soft at the bottom, and often easier to tune/jet high overlap cams. I've used AR headers on VW's, BMWs, Honda motorcycles, etc. and have always been pleasantly surprised with the result.

Anyway, these are available, need to be cleaned and have a few very minor dents - I tried to photo as well as possible.

$550 obo plus shipping.

[greggearhead]

[Mr9146]

This thread should not have been moved.

These are early 911 parts.

FWIW, I've been using these of hotrod 911s for years ... hard to come by but very good parts.

[greggearhead]

Thanks - I thought so too, but it's a grey area to me a little bit. I the 911 Parts section is just for OEM original parts? No. For parts that fit and work on early 911s - some, but not all. Not sure how to do it correctly.

But thanks again - I'm a firm believer in AR headers, esp with the big cams that get used in small displacement 911 engines.

[greggearhead]

Couple more pics of the dents.

[greggearhead]

Headers sold - heater boxes still available.

$150 plus ship.

[greggearhead]

How about $100 shipped for the heater boxes?

[greggearhead]

Heater boxes sold.

ALL SOLD