Mark D Posted July 13, 2012 Report Posted July 13, 2012 There's a sale on Ebay right now that's peaked my curiosity. I haven't seen this manufacturer mentioned in past debates on the dual/single exhaust subject. Wondering when these might have been produced and if this was more of a product that might have been marketed towards the commercial vehicle trade? Take a look at the heat riser image... doesnt seem to be welded. Quote
Andydodge Posted July 13, 2012 Report Posted July 13, 2012 Doug's Headers was owned by a guy named Doug Thorley as far as I know........they were very popular in the 60/70's, at least when I started reading US Hot Rod mags and the "Dougs Headers" stickers were on a lot of drag cars.........these look like a welded up original exhaust manifold and pipes...as an unused kit it would be very rare now...........buy it & use it!!!...............lol..............BUT for real Dougs Split Headers how about this setup, my names Andy Douglas & these are split apart headers.....lol......andyd. Quote
Mark D Posted July 15, 2012 Author Report Posted July 15, 2012 Not I... I've decided that I'd rather have a pair of reds headers. That's a project for this winter. Quote
blucarsdn Posted July 18, 2012 Report Posted July 18, 2012 (edited) Douglass Mufflers and their split manifolds were a very popular item in the early '50's... I worked in a muffler shop called "Art's Muffler Shop" in eastern Idaho in '51-52, Douglass mufflers were one of our major suppliers of split manifolds and steel pack mufflers... We used Belond for headers. It use to be very common to leave the heat riser in manifolds that were split. The engine would run better, not overly rich with the heat riser in place. As we got more skilled at what we were doing we started to split our own manifolds, using Douglass as a pattern.. This cut down the inventory. We preferred the Douglass mufflers in lieu of the iconic 'Smitty's' To my knowledge Douglass Mufflers and Doug's Headers had nothing in common.... Bill Edited July 18, 2012 by blucarsdn Quote
1941Rick Posted July 18, 2012 Report Posted July 18, 2012 You will be happy with Red's Headers. I bought the uncoated ones and sprayed them with Header paint and they look good. Quote
blucarsdn Posted July 19, 2012 Report Posted July 19, 2012 It use to be very common to leave the heat riser in manifolds that were split. The engine would run better, not overly rich with the heat riser in place. A foot note on heat risers: Muffler guys in the warmer areas of the country have generally held that heat risers are not needed in exhaust systems.. This can be true if you are just driving in So Cal, however, in the colder areas of the country you will find that the engine runs rich, lots of black smoke and stumbling on accelleration.. The inline engines are more prone to heat riser issues compared to a V motor where the carb is sitting on top of the motor....Bill Quote
hkestes41 Posted July 19, 2012 Report Posted July 19, 2012 A foot note on heat risers:Muffler guys in the warmer areas of the country have generally held that heat risers are not needed in exhaust systems.. This can be true if you are just driving in So Cal, however, in the colder areas of the country you will find that the engine runs rich, lots of black smoke and stumbling on accelleration.. The inline engines are more prone to heat riser issues compared to a V motor where the carb is sitting on top of the motor....Bill I don't know as I really agree with that. I have driven mine in below freezing weather with cast iron headers and a dual Offy intake with Carter Webber 2bbls with none of the stated consequences. There were even a few days when I kept a towel on the dash to catch the ice I would scrape off the inside of the windshield with an ice scraper. Quote
blucarsdn Posted July 23, 2012 Report Posted July 23, 2012 Many of the multiple carb setups that were common in days gone by had passages built into the manifold to which hot water lines from the engine/radiator could be hooked up.. Edmunds which was very popular with the inline engine cars was one. Some of the modern dual carb/four barrel manufactures, "Clifford" offer 'heat riser' attachments for their inline manifolds. I think there is a big differences between 'now and then', that is, when our old cars were our daily drivers to get us to and from work every day.. There are very few of us old car nuts that drive our old cars on a daily basis during the months of October/February.... Bill Quote
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