Beaver Posted January 9, 2019 Share Posted January 9, 2019 2.2(19) of this https://www.lvvta.org.nz/documents/standards/LVVTA_STD_Suspension_Systems.pdf suggests if they are done by a professional then yes they are legal. 2 Quote Link to comment Share on other sites More sharing options...
michael14 Posted January 9, 2019 Share Posted January 9, 2019 @Beaver do you think 2.2(19)(b)(ii) contradicts this? Given that they heat the springs (to my knowledge) Quote Link to comment Share on other sites More sharing options...
michael14 Posted January 9, 2019 Share Posted January 9, 2019 Actually @Beaver I believe you are correct. Key word being “or” in the wording of that document. Happy days. Quote Link to comment Share on other sites More sharing options...
cletus Posted January 9, 2019 Share Posted January 9, 2019 Bear in mind that is the rules for certification - so a reset spring requires cert- there's nothing allowing a reset spring in the wof modification threshold Also reset coils are not often very good- you remove travel but the spring rate remains the same, and often people get springs reset because an aftermarket spring doesnt go low enough Leaf springs have the advantage of being able to add more leafs to up the spring rate Quote Link to comment Share on other sites More sharing options...
Yowzer Posted January 9, 2019 Share Posted January 9, 2019 Cut them like a real man The same goes for leaf springs and torsion bars 1 Quote Link to comment Share on other sites More sharing options...
michael14 Posted January 9, 2019 Share Posted January 9, 2019 Cutting is exactly what I’m trying to avoid haha. Struggling to find an aftermarket spring at the moment. 1980 RX30 Cressida. Quote Link to comment Share on other sites More sharing options...
Yowzer Posted January 9, 2019 Share Posted January 9, 2019 Why? Cut is legit. My Cressida is rolling cuts and it rides bloody good. Otherwise you can get some custom springs made up if you really want to. 2 Quote Link to comment Share on other sites More sharing options...
michael14 Posted January 9, 2019 Share Posted January 9, 2019 Wouldn’t know how much to take off to get it low enough (only really want to drop 50mm or so) or how to tidy it up haha Quote Link to comment Share on other sites More sharing options...
KP_wag Posted January 9, 2019 Share Posted January 9, 2019 5 hours ago, Testament said: this exhaust noise thing brings up another question while you said baffles etc should need tools to be removed but what about the case of a baffle to make the exhaust quiet for oldman reasons basically similar to a lot of modern supercars/high performance cars that have some kind of varex type butterfly valve thing in the exhaust the idea being with the valve open the exhaust is louder - but still passes noise requirements but with the valve closed the car is proper quiet for nice cruising/not upsetting everyone when you are just going to get a bottle of mlik from the servo? I'm interested in this - suspect I'm the old man you speak of... Keen to have unrowdy whisper quiet sleeper spec for tootling into work carpark and have free-er flow when on the gas for my conversion (was thinking boost referenced). Re OK if OEM, I assume the OEM bit is the chassis/body versus engine? I believe some HSVs had vacuum actuated exhaust valves and donor motor is LS so?... Recipient is Hilux so nothing fancy there exhaust-wise Quote Link to comment Share on other sites More sharing options...
Yowzer Posted January 9, 2019 Share Posted January 9, 2019 21 minutes ago, michael14 said: Wouldn’t know how much to take off to get it low enough (only really want to drop 50mm or so) or how to tidy it up haha Measure the distance between coils with the weight on them to get an idea of how many to lop off, then a 1/4 coil at a time until it's almost where you want, then fine tune. Then sort some shorter shocks to keep it all captive. 50mm would be about 1.5 - 2 coils on the front, probably 1 coil on the rear at a top-of-the-head guess Quote Link to comment Share on other sites More sharing options...
Bling Posted January 9, 2019 Share Posted January 9, 2019 Just go into Chamberlains in town and see what they can offer you. More legit than cuts. /old man Quote Link to comment Share on other sites More sharing options...
michael14 Posted January 9, 2019 Share Posted January 9, 2019 I rung them about reset springs, I assume that involved some kind of heat treatment @Bling Quote Link to comment Share on other sites More sharing options...
Yowzer Posted January 9, 2019 Share Posted January 9, 2019 Sure does, they heat, squish, and cool. Quote Link to comment Share on other sites More sharing options...
cletus Posted January 9, 2019 Share Posted January 9, 2019 2 hours ago, KP_wag said: I'm interested in this - suspect I'm the old man you speak of... Keen to have unrowdy whisper quiet sleeper spec for tootling into work carpark and have free-er flow when on the gas for my conversion (was thinking boost referenced). Re OK if OEM, I assume the OEM bit is the chassis/body versus engine? I believe some HSVs had vacuum actuated exhaust valves and donor motor is LS so?... Recipient is Hilux so nothing fancy there exhaust-wise https://www.lvvta.org.nz/documents/standards/LVVTA_STD_Exhaust_Noise_Emissions.pdf 2.1 has the requirements for what you are talking about 1 Quote Link to comment Share on other sites More sharing options...
Bling Posted January 9, 2019 Share Posted January 9, 2019 1 hour ago, michael14 said: I rung them about reset springs, I assume that involved some kind of heat treatment @Bling Get new ones made, as per your lowering thread. Quote Link to comment Share on other sites More sharing options...
KP_wag Posted January 9, 2019 Share Posted January 9, 2019 10 hours ago, cletus said: https://www.lvvta.org.nz/documents/standards/LVVTA_STD_Exhaust_Noise_Emissions.pdf 2.1 has the requirements for what you are talking about Thanks for that. So my reading of that is that you can have a switched 'bimodal' exhaust as long as it is not manually actuated and as long as it doesn't exceed the max decibel limits under either mode? 1 Quote Link to comment Share on other sites More sharing options...
cletus Posted January 9, 2019 Share Posted January 9, 2019 Yep that's how I read it. So if it passes in 'open' mode it should be ok 2 Quote Link to comment Share on other sites More sharing options...
Shakotom Posted January 9, 2019 Share Posted January 9, 2019 Good morning, qurstion you probably get asked 100000 times a day, what’s the budget one should allow for cost for coilovers and wheels on a Japanese vechile? also for getting multiple wheel options is there a further cost per wheel? thank. 2 Quote Link to comment Share on other sites More sharing options...
Toddy415 Posted January 10, 2019 Share Posted January 10, 2019 10 hours ago, cletus said: Yep that's how I read it. So if it passes in 'open' mode it should be ok So reading this could i install some varex type mufflers in my chev sedan with the switch to change sound level in the boot that way it cant be changed while in motion. But is technically still inside the vehicle. Or would switch have to be outside vehicle? Of course sound level fully open has to comply with db levels sorry for going over this again i dont have my head fully around this. 1 Quote Link to comment Share on other sites More sharing options...
cletus Posted January 10, 2019 Share Posted January 10, 2019 the way I interpret it, if the exhaust met the decibel requirements in the open position, you could have the switch inside the vehicle and you could change it whenever 1 1 Quote Link to comment Share on other sites More sharing options...
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