mcc1979ian Posted August 13, 2012 Share Posted August 13, 2012 ok so iv been offered a brand new/unused set of headman headers for a decent price, but i dont know much about these headers so am looking for your opinions/views on them............. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted August 13, 2012 Share Posted August 13, 2012 I had headers, took 'em off as they collected mud, got in the way, and created tonnes of steam when splashing through puddles. No discernable difference in performance with cast manifolds. Quote Link to comment Share on other sites More sharing options...
missingsid Posted August 15, 2012 Share Posted August 15, 2012 Headers in general (4 branch equal length) are good for top end power with correct other mods, not good for Torque i.e. offroading. HfH did a bit on another thread. I put 4 branch headers on my hybrid and had to sort out the fueling to get the engine working as before. Adding exhaust wrap to them to reduce the resulting higher engine bay temps from the header heat caused even more fueling problems as the exhaust flow is even quicker. Headman are thought to be a bit good (best?) from threads i have seen elsewhere. i am sure someone will add better information soon though. Marc. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted August 15, 2012 Share Posted August 15, 2012 Mine were wrapped too, that was just hateful stuff. Quote Link to comment Share on other sites More sharing options...
missingsid Posted August 15, 2012 Share Posted August 15, 2012 Mine were wrapped too, that was just hateful stuff. My offroading is probably a bit tamer than yours! Mine was mainly Salisbury liquid sand. Marc Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted August 15, 2012 Share Posted August 15, 2012 Overrated for a Rover lump, 3.9 $:2s + decent 2 : 1s to a Y are pretty much as good, better on torque, as stated earlier 4:1s moves power to top end at expense of bottom end, and can crack in cold water Cast units arein the main plentifull and cheap, just not as bling, but cast prob = nicer engine ! Nige Quote Link to comment Share on other sites More sharing options...
JeffR Posted August 15, 2012 Share Posted August 15, 2012 Overrated for a Rover lump, 3.9 $:2s + decent 2 : 1s to a Y are pretty much as good, better on torque, as stated earlier 4:1s moves power to top end at expense of bottom end, and can crack in cold water Cast units arein the main plentifull and cheap, just not as bling, but cast prob = nicer engine ! Nige Been there, done that, read the book, got the tee shirt and interviewed the author. Stick with cast manifolds. Mine were wrapped too, that was just hateful stuff. No, that stuff is just vicious and vindictive , mind you would be nice to wrap a politician or two in it, but I digress. Quote Link to comment Share on other sites More sharing options...
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