nazzurro19 Posted March 15, 2011 Share Posted March 15, 2011 meams i gotta take it off haha n Quote Link to post Share on other sites
Glanza_cl Posted March 15, 2011 Share Posted March 15, 2011 @starlet666, course velocity can be effected... even if you have an appropriate size exhaust. if your turbo is silly hot and then the exhaust gases enter a cooler exhaust... even colder by the backbox exhaust velocity is going to slow regardless, yes it will still be quick as its a constant from the engine but it can still be effected. heat wrapping will retain the heat and keep the gases on a constant smooth flow. Also i think wrapping an exhaust is never pointless (if dont correctly), not as vital on a street car to a race car but still beneficial. Quote Link to post Share on other sites
nastyrash 2003 Posted March 15, 2011 Share Posted March 15, 2011 same here i think more on a turbo. Quote Link to post Share on other sites
starlet666 Posted March 16, 2011 Share Posted March 16, 2011 @starlet666, course velocity can be effected... even if you have an appropriate size exhaust. if your turbo is silly hot and then the exhaust gases enter a cooler exhaust... even colder by the backbox exhaust velocity is going to slow regardless, yes it will still be quick as its a constant from the engine but it can still be effected. heat wrapping will retain the heat and keep the gases on a constant smooth flow. Also i think wrapping an exhaust is never pointless (if dont correctly), not as vital on a street car to a race car but still beneficial.if you have a correctly sized exhaust, IE a 3 inch system it will never have enough back pressure to restrict a 1.3 litre anyways, i had a 450hp at the wheels s15 silvia and we did a back to back dyno run, 3 inch titanium system on made 450, system dropped after the dump (which was a 4 inch dump pipe), and it made .2 of a hp difference (was actually under 450hp) which u leave as a variable anyways... all i had was a turbo beenie, heat wrapped and ceramic coated manifold and dump pipe. they were only to keep the heat away from the engine sensors as it was a high mount turbo set upas for velocity on a turbo system it doesnt NEED velocity, it needs to just get away from the turbo, though if u have mufflers that are not straight through, u will get back pressure... as i said, wrapping the whole exhaust on a street car is a waste of time, and on most race cars it doesnt even get done (except the super highly revving N/A motors that require velocity for the scavenging effect) Quote Link to post Share on other sites
nastyrash 2003 Posted March 16, 2011 Share Posted March 16, 2011 thr are a very many different turbo set ups, plus u fail to mention supercharging, i have seen benafits from wrapping thw are very small. but every little helps. i think u are talking to genrally. most engines respond different to different mods, and this mod is so easy, plus the o/s rear wheel sits very close to the exhaust. 1 example i have personaly com across was a escort rs turbo that had uneven power delivery across all 4 cylinders and belive it or not a exhaust wrap almost sorted it. this was after the engine was pulled apart several times. Quote Link to post Share on other sites
nastyrash 2003 Posted March 17, 2011 Share Posted March 17, 2011 gutted, no replie!!!!. with road going cars having a large ground clearance lots of cold air affect the exhaust quite abit, thw winter air is good for the induction it has the opposit affect on the exhaust in many ways. Quote Link to post Share on other sites
starlet666 Posted March 17, 2011 Share Posted March 17, 2011 been busy sorry lolyou cant really bring super chargers into this same thread, supercharged cars rely on the N/A principles of scavenging and velocity, turbos do not, bigger is always better when it comes to the exhaust of a turbo car....O/P im not saying not to wrap the whole system, go for it, but im just saying its pointless, and it isnt going to be cheap if its dont properly, with the amount of overlap u will need for the whole system being about 40-50 metres, and the time it takes to wrap it neatly, its pure waste time and money Quote Link to post Share on other sites
Lukew360 Posted March 17, 2011 Share Posted March 17, 2011 Despite all this I'm going to do it on mine before it gets fitted! Quote Link to post Share on other sites
nastyrash 2003 Posted March 18, 2011 Share Posted March 18, 2011 let us agree to disagree on this point Quote Link to post Share on other sites
nazzurro19 Posted March 18, 2011 Share Posted March 18, 2011 will 10m do for mani n decat n 25 for exhaust? Quote Link to post Share on other sites
lukEp Posted March 18, 2011 Share Posted March 18, 2011 I've used 20m so far and just at the back box from decat on a japspeed system another 4-5m and the back box will be done, just the pipe mind not then silencers which will be next Quote Link to post Share on other sites
nazzurro19 Posted March 18, 2011 Share Posted March 18, 2011 cheers dude ill get a 50m haha thats shud be overkill im just guna do mani dwnpipe n then the whole exhaust Quote Link to post Share on other sites
adz_sportif_turbo Posted March 18, 2011 Share Posted March 18, 2011 id wana do it jus to spit a few cheekies Quote Link to post Share on other sites
nazzurro19 Posted March 18, 2011 Share Posted March 18, 2011 id wana do it jus to spit a few cheekies yup until i saw the post it helps u pop n spit i was like SOLD to the bald guy in the white GT Quote Link to post Share on other sites
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