cletus Posted February 18, 2013 Share Posted February 18, 2013 No doubt been covered before. I cant find using search. With my twin cam conversion, will I need to install a driveshaft hoop? I know with any engine swap you need one but in theory, my engine is basically the same but instead of SOHC Carburetor its DOHC Injected. I have a feeling you still need a hoop. if it makes 50% or more power than the factory engine (either a modfied factory engine or a substitute one) if you have modified the driveshaft any time a turbo or supercharger is fitted then you will need to fit a loop/2 if it has a 2piece shaft these bullet point things make me look a lot smarter than i am 1 Quote Link to comment Share on other sites More sharing options...
cletus Posted February 18, 2013 Share Posted February 18, 2013 I'm fairly certain you cannot use GPS speedometers. It's more the mileage side of things that is a concern, I believe. yarr. Because of the vast network of tunnels new zealand has, gps speedos are a no go. its a bummer, because getting a speedo working accurately can be one of the trickiest/more expensive parts of a conversion. Quote Link to comment Share on other sites More sharing options...
cletus Posted February 18, 2013 Share Posted February 18, 2013 Auto 1uz soarer converted to manual will need a cert, yes? There's no way around it any way by using only standard parts etc? technically, yes, because you cant bolt it in using factory parts. you may get away with it if you can make it look factory, the bellhousing is the only non factory bit you would have to use from memory Quote Link to comment Share on other sites More sharing options...
UTERUS Posted February 18, 2013 Share Posted February 18, 2013 Bellhousing and flywheel, I guess you could paint the bell and gearbox and hope for the best. You can get the manual gearstick surround from a turbo soarer so it looks stock from inside. Quote Link to comment Share on other sites More sharing options...
OSM Garage Posted February 18, 2013 Share Posted February 18, 2013 if it makes 50% or more power than the factory engine (either a modfied factory engine or a substitute one) if you have modified the driveshaft any time a turbo or supercharger is fitted then you will need to fit a loop/2 if it has a 2piece shaft these bullet point things make me look a lot smarter than i am Thanks for that Cletus 50% eh? That might just get me thru a cert without one. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted February 20, 2013 Share Posted February 20, 2013 If the speedo was that much of a jew to make right, I'd just buy a Vapour trail bike speedo. Then after cert, flag it, and go back to gps. Quote Link to comment Share on other sites More sharing options...
SHGWAG Posted February 20, 2013 Share Posted February 20, 2013 if it makes 50% or more power than the factory engine (either a modfied factory engine or a substitute one) if you have modified the driveshaft any time a turbo or supercharger is fitted then you will need to fit a loop/2 if it has a 2piece shaft these bullet point things make me look a lot smarter than i am Clint, how does this work in respect of: Going from twin turbo to single turbo? and I'm currently running only 30% more power over factory, but with tuning could potentially make around 60% once tuned - how does this effect the requirements? Quote Link to comment Share on other sites More sharing options...
KKtrips Posted February 20, 2013 Share Posted February 20, 2013 Easy - aftermarket turbo now requires a cert - as do external wastegates. Quote Link to comment Share on other sites More sharing options...
Escorto. Posted February 20, 2013 Share Posted February 20, 2013 Almost same question as Mike. What if the car is turbo standard, But now has a bigger turbo and intercooler, no chance of it being over 50% more ponies.. Does it still need a pair of loop? Quote Link to comment Share on other sites More sharing options...
KKtrips Posted February 20, 2013 Share Posted February 20, 2013 Almost same question as Mike. What if the car is turbo standard, But now has a bigger turbo and intercooler, no chance of it being over 50% more ponies.. Does it still need a pair of loop? pretty sure its still certification required for non factory turbo and any performance based certification requires a driveshaft loop. Quote Link to comment Share on other sites More sharing options...
Raizer Posted February 20, 2013 Share Posted February 20, 2013 well the box i want to use has no speedo output at all. How does the Vapour thing work? Like a bike speedo, you stick a magnet to a hub or brake rotor and a sensor picks it up as it spins. Quote Link to comment Share on other sites More sharing options...
Ned Posted February 20, 2013 Share Posted February 20, 2013 What about fancy assisted GPS that uses an accelerometer And gyroscope to approximate speed and position? Quote Link to comment Share on other sites More sharing options...
Hemi Posted February 20, 2013 Share Posted February 20, 2013 This is my fav thread purely for the amount of knowledge and the questions being asked but seriously kiddies dont be like Hemi and just not give a shit. I got away with it , you might not. Always blow on the pie safer communities together. 1 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted February 20, 2013 Share Posted February 20, 2013 How structural and part of the effective crumple zone is the top half of the very front pannel on a car- the sheet metal that holds the headlights, top radiator mounts and bonnet catch. Can this be replaced with a bolt in section to allow easier motor removal? Thinking just a piece of rhs along the top with brackets for lights and latch etc on it. Quote Link to comment Share on other sites More sharing options...
Nominal Posted February 20, 2013 Share Posted February 20, 2013 How structural and part of the effective crumple zone is the top half of the very front pannel on a car- the sheet metal that holds the headlights, top radiator mounts and bonnet catch. Can this be replaced with a bolt in section to allow easier motor removal? Thinking just a piece of rhs along the top with brackets for lights and latch etc on it. There's a recent answer on the LVVTA forum on this In general, for an older vehicle not designed with frontal impact in mind, the modification needs to be structurally sound and present no danger to pedestrians (no sharp edges etc. this applies to the bonnet pins too). For more modern cars with airbags and deformable front ends, you need to be a bit more careful. You cannot remove any structural parts or alter areas intended to crush on impact or close to any frontal impact sensors. If you do alter any other parts you need to retain the same strength as the vehicle had before. http://lvvta.proboards.com/index.cgi?board=general&action=display&thread=279 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted February 20, 2013 Share Posted February 20, 2013 Thanks so much Quote Link to comment Share on other sites More sharing options...
SHGWAG Posted February 21, 2013 Share Posted February 21, 2013 Easy - aftermarket turbo now requires a cert - as do external wastegates. ER, not what I was asking KK.I was wanting to know if I needed a driveshaft hoop for the change fron twin to single / boost controller. Quote Link to comment Share on other sites More sharing options...
KKtrips Posted February 21, 2013 Share Posted February 21, 2013 Changing turbo from factory requires a cert and all performance modification cert's require a driveshaft loop. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted February 21, 2013 Share Posted February 21, 2013 Crap, according to my calcs, I'm going to need a drive shaft loop, and its a two peice, what a fucken JOKE!!!!!!!!!!!!! Oh well... Also just realised Is hould probabaly put my crown on hold asap again Quote Link to comment Share on other sites More sharing options...
KKtrips Posted February 21, 2013 Share Posted February 21, 2013 Wagnats is still 11 and a half months away so you won't need to start work on it for another 10 months. lol Quote Link to comment Share on other sites More sharing options...
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