supra dan Posted August 11, 2008 Share Posted August 11, 2008 is there anything to stop you using a mid size turbo on a cast manifold? i was looking at the powerhouse racing street kit, but it seems to me that if you are spending that much money might be worth getting a bit bigger turbo. i like the idea of a cast manifold tho, thought it might be the best of both worlds Quote Link to comment Share on other sites More sharing options...
gaz1 Posted August 11, 2008 Share Posted August 11, 2008 i was advised against the arnouts cast manifold for anything bigger than a t61 (flow problems) Quote Link to comment Share on other sites More sharing options...
AlanM Posted August 11, 2008 Share Posted August 11, 2008 I was advised against for a T51 Quote Link to comment Share on other sites More sharing options...
supra dan Posted August 11, 2008 Author Share Posted August 11, 2008 the powerhouse one is good for almost 650rwhp according to the website. i think i will put a post in their section Quote Link to comment Share on other sites More sharing options...
Pig Posted August 11, 2008 Share Posted August 11, 2008 the powerhouse one is good for almost 650rwhp according to the website. i think i will put a post in their section That prob is a T61 on there dyno's Quote Link to comment Share on other sites More sharing options...
supra dan Posted August 11, 2008 Author Share Posted August 11, 2008 That prob is a T61 on there dyno's you bitch Quote Link to comment Share on other sites More sharing options...
paul mac Posted August 11, 2008 Share Posted August 11, 2008 is there anything to stop you using a mid size turbo on a cast manifold? i was looking at the powerhouse racing street kit, but it seems to me that if you are spending that much money might be worth getting a bit bigger turbo. i like the idea of a cast manifold tho, thought it might be the best of both worlds probably a waste of time unless you were going to go for a tubular manifold at a later date, it all depends what you want from the car really does'nt it, dont forget theres no free lunch and the bigger turbo will produce more power but more lag, i have had my T61 nearly 3 years and it is still a buzz the low down pick up and top end power still put a smile on my face, for the definative answer Wez would be the man to talk to as i think he makes about 570 hp on a cast manifold Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 11, 2008 Share Posted August 11, 2008 In deference to the owners who have spent a fortune on their cars, yet gone against my best advice and bought el cheapo tubular manifolds and none genuine Garrett or other brand name turbos, I won't mention names. However I have had 3 MKIV's and another same family car in recently that have probably driven their owners to near financial suicide with blowing manifold to head, cracked tubular manifolds or turbo to manifold warping issues. Forget the extra bit of power, perceived flow, whatever, go for the much better (but probably still imperfect) reliability of an aftermarket cast manifold and a genuine branded turbo. You'll have enough on your plate with mapping, cooling, proper pipework, et cetera, without the worries of material problems of a built to a price turbo or manifold. Quote Link to comment Share on other sites More sharing options...
paul mac Posted August 11, 2008 Share Posted August 11, 2008 In deference to the owners who have spent a fortune on their cars, yet gone against my best advice and bought el cheapo tubular manifolds and none genuine Garrett or other brand name turbos, I won't mention names. However I have had 3 MKIV's and another same family car in recently that have probably driven their owners to near financial suicide with blowing manifold to head, cracked tubular manifolds or turbo to manifold warping issues. Forget the extra bit of power, perceived flow, whatever, go for the much better (but probably still imperfect) reliability of an aftermarket cast manifold and a genuine branded turbo. You'll have enough on your plate with mapping, cooling, proper pipework, et cetera, without the worries of material problems of a built to a price turbo or manifold. couldn't agree more Chris i do like to "sniff" out a bargain but manifolds and turbos are really a case of you pay for what you get, i have an expensive manifold and a BL turbo and touch wood have given 3 years faultless service, i would definately have considered a cast manifold if i had come across them at the time Quote Link to comment Share on other sites More sharing options...
SimonB Posted August 11, 2008 Share Posted August 11, 2008 i was advised against the arnouts cast manifold for anything bigger than a t61 (flow problems) You have been advised incorrectly I run a T67DBB on mine and it made 625bhp. I'm probably going to go slightly larger on the turbine housing with the new engine, we shall see what that makes... Quote Link to comment Share on other sites More sharing options...
supra dan Posted August 12, 2008 Author Share Posted August 12, 2008 You have been advised incorrectly I run a T67DBB on mine and it made 625bhp. I'm probably going to go slightly larger on the turbine housing with the new engine, we shall see what that makes... thats impressive, sounds like a good combination. what boost do you run ? Quote Link to comment Share on other sites More sharing options...
supra dan Posted August 12, 2008 Author Share Posted August 12, 2008 Forget the extra bit of power, perceived flow, whatever, go for the much better (but probably still imperfect) reliability of an aftermarket cast manifold and a genuine branded turbo. You'll have enough on your plate with mapping, cooling, proper pipework, et cetera, without the worries of material problems of a built to a price turbo or manifold. this is what i was thinking, one less thing to worry about. am i right in thinking it would lessen the heat problems over a tube manifold? Quote Link to comment Share on other sites More sharing options...
bolarbag Posted August 12, 2008 Share Posted August 12, 2008 this is what i was thinking, one less thing to worry about. am i right in thinking it would lessen the heat problems over a tube manifold? No, it should increase temps, but then neither should have heat 'problems', that would be down to the rest of the setup and the map There are many problems with el-cheapo products, I think generalising tubular manifolds to be problematic is stereotyping to say the least How many tests have been done to show that these cast manifolds dont cause reversions and don't have flow issues? Why do companies spend money on R&D(Yeah some do) trying to build the manifold around the ignition configuration to prevent reversions if all that would be needed is a cast (Arnouts type)manifold? I do think cast mani's have a place but then so do well made tubulars, both limited by build quality, with only one being limited by flow Quote Link to comment Share on other sites More sharing options...
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