spanners Posted December 20, 2010 Share Posted December 20, 2010 was looking at this on TM http://www.trademe.co.nz/Browse/Listing ... =340786323 And wondered if its an option - buy this (13ish kg flywheel) and have 7-8kg removed from it. I know that a lot, thats why I ask. Would end up cheaper than buying a brand new SMF but obviously it doesnt have TRD stamped into it which means that I cant put TRD on the shopping list on my door, cos that would just be foolish Also who in wgtn makes custom driveshafts? cheerio Quote Link to comment Share on other sites More sharing options...
Jase Posted December 20, 2010 Share Posted December 20, 2010 if its any type of forged or cast steel no it won't be safe (cast and forged steel relies on the outer layers of steel for its strength) if its none of the above shave the living daylights out of it Quote Link to comment Share on other sites More sharing options...
spanners Posted December 20, 2010 Author Share Posted December 20, 2010 Can you tell which it is? Im not really a metal expert... Quote Link to comment Share on other sites More sharing options...
isnowi Posted December 21, 2010 Share Posted December 21, 2010 Ideally you want a billet flywheel if you're gonna lighten it hugely, i would imagine you would see machining marks over the entire flywheel if it is billet, you can usually tell if it's cast by looking at the back of the flywheel, it will be unmachined and show casting marks etc As for custom drive shafts in Wgtn, try Howat engineering in Naenae. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted December 21, 2010 Share Posted December 21, 2010 It's a bit of a wives tale that it's hell unsafe to lighten a cast flywheel. Obviously there are limits, but I have a nissan motorsport race/rally prep guide for the datsun 1200. And it includes a drawing of how much meat to remove from the flywheel. While it's not dangerously thin, it would be a complete pig in trafffic with the f/wheel in that book. Quote Link to comment Share on other sites More sharing options...
Hemi Posted December 21, 2010 Share Posted December 21, 2010 im pretty sure bnt can do clutchkits and chormoly flywheels for a not stupid price ... http://www.xtremeclutch.com.au/page.asp ... rent2id=26 thats the brand etc . Quote Link to comment Share on other sites More sharing options...
EFI_LC Posted December 21, 2010 Share Posted December 21, 2010 It's a bit of a wives tale that it's hell unsafe to lighten a cast flywheel. Obviously there are limits, but I have a nissan motorsport race/rally prep guide for the datsun 1200. And it includes a drawing of how much meat to remove from the flywheel. While it's not dangerously thin, it would be a complete pig in trafffic with the f/wheel in that book. I Quote Link to comment Share on other sites More sharing options...
Gaz Posted December 21, 2010 Share Posted December 21, 2010 I lightened the shit out of my pinto flywheel and its sweet as, even in traffic.ee my cortina build thread for before after shots. Drivesahafts in Welly .. Halcrow engineering. Gaz Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted December 21, 2010 Share Posted December 21, 2010 That guy on the youtube clip was breathing a bit too hard for my liking.... Quote Link to comment Share on other sites More sharing options...
EFI_LC Posted December 21, 2010 Share Posted December 21, 2010 That guy on the youtube clip was breathing a bit too hard for my liking.... Thats from lifting all those heavy flywheels Quote Link to comment Share on other sites More sharing options...
spanners Posted December 21, 2010 Author Share Posted December 21, 2010 So consensus is to just lighten anything basically. I like. Quote Link to comment Share on other sites More sharing options...
mikuni Posted December 21, 2010 Share Posted December 21, 2010 I was going to say yes, but I have lightened a fly wheel before (cast) and given the options, I would get a custom one made up. All you need is a ring gear and the crank bolt pattern and a reputable place will be able to make one for you. I was quoted around $500 a couple of years back but as I say, I opted for the lightening option purely because it was half the price being that I already had a couple of flywheels to play with. Quote Link to comment Share on other sites More sharing options...
Testament Posted December 21, 2010 Share Posted December 21, 2010 you can lighten cast flywheels - but you have to be careful, no taking too much out, generous radii etc. Quote Link to comment Share on other sites More sharing options...
spanners Posted December 21, 2010 Author Share Posted December 21, 2010 I was going to say yes, but I have lightened a fly wheel before (cast) and given the options, I would get a custom one made up. All you need is a ring gear and the crank bolt pattern and a reputable place will be able to make one for you. I was quoted around $500 a couple of years back but as I say, I opted for the lightening option purely because it was half the price being that I already had a couple of flywheels to play with. Basically the deal is that if i have to spend more than a few hundy, i will just leave the dual mass jobby until later. I have no job, im an alcoholic (which is an expensive addiction) and my car already has a flywheel and clutch. I am just trying to pounce on an opportunity for greatness here was thinking of just sellotaping flywheel to my corollas front wheel and then holding a chisel against it until its lighter drunk Quote Link to comment Share on other sites More sharing options...
EFI_LC Posted December 21, 2010 Share Posted December 21, 2010 I was going to say yes, but I have lightened a fly wheel before (cast) and given the options, I would get a custom one made up. All you need is a ring gear and the crank bolt pattern and a reputable place will be able to make one for you. I was quoted around $500 a couple of years back but as I say, I opted for the lightening option purely because it was half the price being that I already had a couple of flywheels to play with. can you please suck the penis of said reputable places owner so that he gives me free flywheels for life? Basically the deal is that if i have to spend more than a few hundy, i will just leave the dual mass jobby until later. I have no job, im an alcoholic (which is an expensive addiction) and my car already has a flywheel and clutch. I am just trying to pounce on an opportunity for greatness here was thinking of just sellotaping flywheel to my corollas front wheel and then holding a chisel against it until its lighter drunk Na you don't need to do anything like that..... just grap the kids lego and make one, plastic ones are way lighter than steel Quote Link to comment Share on other sites More sharing options...
mikuni Posted December 21, 2010 Share Posted December 21, 2010 Basically the deal is that if i have to spend more than a few hundy, i will just leave the dual mass jobby until later. I have no job, im an alcoholic (which is an expensive addiction) and my car already has a flywheel and clutch. I am just trying to pounce on an opportunity for greatness here I see what you're sayin. My advice in that case, throw it back together as is, get it on the road and get a nice light billet one for cheap off trademe later on, when you're ready to throw some more money away etc Quote Link to comment Share on other sites More sharing options...
Simon Posted December 22, 2010 Share Posted December 22, 2010 Flywheels are over rated. If I didn't need it to start and be a clutch I'd take it off. Quote Link to comment Share on other sites More sharing options...
KKtrips Posted December 22, 2010 Share Posted December 22, 2010 Direct drive/crash start you say? Quote Link to comment Share on other sites More sharing options...
westy Posted December 22, 2010 Share Posted December 22, 2010 Hang it by a piece of string and whack it with hammer like object. If it rings, lighten it. If it goes thud, throw away. Dont go too light and dont rev it too high and you'll be all good. I have 6kg on Alice, have used on another car, and recommend them all day long. Quote Link to comment Share on other sites More sharing options...
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