jimjam92 Posted November 30, 2015 Share Posted November 30, 2015 Hi Guys, I am currently looking at a set of Nismo exhaust manifolds. I already have an aftermarket catback (although it's a Japspeed one and sucks, so is being replaced with a full custom system in the near future) and I am looking to add the kinetix inlet manifold and rev up as well. I am looking to get 300hp after a remap. I am sure these will help however are they worth it for the price of effectively having to split the car down the middle to install them? Or can I comfortably reach this figure without them? Car is 2003 DE GT pack Already have Z1 Motorsports 'Z-Tube' and Blitz SUS filter Cheers Quote Link to comment Share on other sites More sharing options...
nissanjuke Posted November 30, 2015 Share Posted November 30, 2015 I know how you feel,I am at present trying to get more power out off my engine as it seems to drop off at 6700 rpm,my car has uprev,millteks,plenum spcer,hfcs and a pop charger.I have been told to remove the hfcs and totallly decat it. can anybody else give me advice on this matter,without going to rebuilds,turbos and super charging. cheers Quote Link to comment Share on other sites More sharing options...
Jetpilot Posted November 30, 2015 Share Posted November 30, 2015 I know how you feel,I am at present trying to get more power out off my engine as it seems to drop off at 6700 rpm,my car has uprev,millteks,plenum spcer,hfcs and a pop charger.I have been told to remove the hfcs and totallly decat it. can anybody else give me advice on this matter,without going to rebuilds,turbos and super charging. cheers Your only 500-600rpm away from redline, its power has got to tail off somewhere. Decats and light weight flywheel will free it up a bit more but in essence, they are a big lazy V6 and never really going to be anything different unless you force induction them Quote Link to comment Share on other sites More sharing options...
nissanjuke Posted November 30, 2015 Share Posted November 30, 2015 THANKS,the more info and advice the better. Quote Link to comment Share on other sites More sharing options...
Kaveney Posted November 30, 2015 Share Posted November 30, 2015 I have dc sports headers manifold if your English . Got a gain of 6 bhp and 6 lb/ft Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted November 30, 2015 Share Posted November 30, 2015 Best advice that I can give is: Save your money. Regards the Nismo headers from USA, best to check that if fitted to a UK RHD car that there will no interference issues. Quote Link to comment Share on other sites More sharing options...
jimjam92 Posted November 30, 2015 Author Share Posted November 30, 2015 Best advice that I can give is: Save your money. Regards the Nismo headers from USA, best to check that if fitted to a UK RHD car that there will no interference issues. Hmm good point, I hadn't thought of that Quote Link to comment Share on other sites More sharing options...
veilside z Posted December 1, 2015 Share Posted December 1, 2015 What about going for a Cosworth plenum? Quote Link to comment Share on other sites More sharing options...
Ekona Posted December 1, 2015 Share Posted December 1, 2015 Look at it another way: Where can you remove weight to get the extra power from? What I mean is, you want 300bhp to shift 1500kg (for the sake of argument), but if your car only weighed 1450kg then you only need 290bhp to go just as fast. Actually, you'd be quicker because of the reduced mass. Lose 100kg and you only need 280bhp, and so on and so forth. Also, removing stuff is free! 5 Quote Link to comment Share on other sites More sharing options...
Jetpilot Posted December 1, 2015 Share Posted December 1, 2015 ^^^^ Much more sensible approach, the 350 is either 100bhp light or 100kg to heavy imho. Quote Link to comment Share on other sites More sharing options...
BobbyZ Posted December 1, 2015 Share Posted December 1, 2015 Look at it another way: Where can you remove weight to get the extra power from? What I mean is, you want 300bhp to shift 1500kg (for the sake of argument), but if your car only weighed 1450kg then you only need 290bhp to go just as fast. Actually, you'd be quicker because of the reduced mass. Lose 100kg and you only need 280bhp, and so on and so forth. Also, removing stuff is free! You make it sound so easy... Quote Link to comment Share on other sites More sharing options...
Ekona Posted December 1, 2015 Share Posted December 1, 2015 It is, really. You can lose double figure KG changing the exhaust alone, then there's the ton of sound deadening, the weight in the rear hatch, lighter wheels if you're not on Rays... Quote Link to comment Share on other sites More sharing options...
BobbyZ Posted December 1, 2015 Share Posted December 1, 2015 How much does the sound deadening weigh? Just curious, because the car is obviously compromised (assuming not track only) if you take that out, so I wouldn't want to do it. The rest of the things you mention surely add up to about 20kg max. My point was (and is) that to lose 100kg, I think you'd have to remove / replace an awful lot of parts, and that means a very compromised car and / or huge expenditure. Quote Link to comment Share on other sites More sharing options...
Ekona Posted December 1, 2015 Share Posted December 1, 2015 You might not want to go that far, agreed, but you could use light foam instead of the heavy gunky stuff to replace the sound deadening as a cheap example. Manifolds and remaps and flywheels aren't cheap either, especially if you're not fitting them yourself, so I still maintain this is a viable option. Certainly no harm in reducing a little bit of weight at least, even 20kg would make a difference. Quote Link to comment Share on other sites More sharing options...
brillomaster Posted December 1, 2015 Share Posted December 1, 2015 everyone knows the most cost effective way of having a faster car... which is selling the zed and buying a faster car! Trying to chase an extra 10bhp here or 10kgs less there really isn't going to make a noticeable difference, you're still in a zed, it'll still be only moderately powerful and overweight. Should stop trying to change it and enjoy it for the things it does well - great V6 soundtrack, meaty handling and big capacity NA grunt. 3 Quote Link to comment Share on other sites More sharing options...
Stutopia Posted December 1, 2015 Share Posted December 1, 2015 Seats weigh at least 200kg, spare wheel too, whip 'em out! 1 Quote Link to comment Share on other sites More sharing options...
HaydnH Posted December 1, 2015 Share Posted December 1, 2015 Should stop trying to change it and enjoy it for the things it does well - great V6 soundtrack, meaty handling and big capacity NA grunt. I thought my Z had all the optional extras but it has never handled my meat... Quote Link to comment Share on other sites More sharing options...
BobbyZ Posted December 1, 2015 Share Posted December 1, 2015 Should stop trying to change it and enjoy it for the things it does well - great V6 soundtrack, meaty handling and big capacity NA grunt. I thought my Z had all the optional extras but it has never handled my meat... Now there's an upgrade I'd pay for. Quote Link to comment Share on other sites More sharing options...
davey_83 Posted December 1, 2015 Share Posted December 1, 2015 (edited) imho on these cars headers, decats, cams, inlet, pulleys, flywheel and pistons aren't worth the overall costs compared to the gains. yes a full build all motor DE will have 340bhp+ *on the right dyno, but you are going to have to spend the vaule of the car almost to get there. all to go faster than what on the road? you'll still have a battle to stay ahead of a stripped 190bhp Glanza. also the driveability could suffer as a result, is it really worth it? Edited December 1, 2015 by davey_83 Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted December 1, 2015 Share Posted December 1, 2015 Save your money, the headers will help, but for the price its an expensive gain, same goes for the plenum, AFAIK the Kinetix is intended for FI really and wont make I big difference, better off with a plenum spacer IMO. You can still attain 300BHP or close with decats, exhaust and plenum spacer with a remap. 1 Quote Link to comment Share on other sites More sharing options...
Flex Posted December 1, 2015 Share Posted December 1, 2015 Just fill the car with helium balloons! Quote Link to comment Share on other sites More sharing options...
jimjam92 Posted December 1, 2015 Author Share Posted December 1, 2015 Thanks for the advice guys, wont bother with the manifolds then. Will still try to push for 300 with the exhaust system, remap and Kinetix manifold (already in the post ). As far as weight saving goes I was always going to change the seats anyway, fancy some bride recliners. I will look at other places I can shed weight, I've already got rid of the spare wheel and jack, as well as some lightened suspension components. Where are the other places I can easily lose weight? Quote Link to comment Share on other sites More sharing options...
Jetpilot Posted December 1, 2015 Share Posted December 1, 2015 Rear hatch swap for carbon, std are pretty dam heavy, its easy but not cheap Quote Link to comment Share on other sites More sharing options...
Sargara Posted December 1, 2015 Share Posted December 1, 2015 (edited) Seats weigh at least 200kg, spare wheel too, whip 'em out! This would be my thought process too. Removing the wheel is free and the seats while potentially pricey to replace depending on what you chose do not compromise the car like other savings do (increased noise, vibrations etc), but would free up a ton of weight. Edited December 1, 2015 by Sargara Quote Link to comment Share on other sites More sharing options...
Jetpilot Posted December 1, 2015 Share Posted December 1, 2015 Seats arent supposedly that heavy 20kg inc rails, aftermarket recliners about 10kg, so your saving maybe 20kg pending what you buy, still a good chunk but not as much as you would think. Quote Link to comment Share on other sites More sharing options...
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