escortwags Posted February 16, 2012 Share Posted February 16, 2012 Cars to low and it's fucking me off (my 616) Half way through re mounting top arms on the diff to sit inside the chasis etc. Started questioning the diff heads angle and if its fucked So yeh what's the perfect angle, have a 2 piece driveshaft if that helps. If someone says near straight it's bye bye floor and hello angry bastard Quote Link to comment Share on other sites More sharing options...
KKtrips Posted February 16, 2012 Share Posted February 16, 2012 near straight sounds about right.. Quote Link to comment Share on other sites More sharing options...
KKtrips Posted February 16, 2012 Share Posted February 16, 2012 I jokes of course, but this may help you.. Quote Link to comment Share on other sites More sharing options...
Truenotch Posted February 16, 2012 Share Posted February 16, 2012 It depends what you want to achieve from the 616? As a general rule, a 5' downward angle (or thereabouts) will give you good drive on a 4-link setup. If the nose angle is too high (anywhere above square) it will give you limited traction when applying power at low speed. So basically: Downwards nose = squat, Upwards nose = skids. I've recently changed the angle of my diff to point further down (was basically square) and it made a huge difference to the amount of drive out of mid / low speed corners. Quote Link to comment Share on other sites More sharing options...
Simon Posted February 16, 2012 Share Posted February 16, 2012 Also, in the top picture, by "work" they mean that the rollers inside the universal joints need an angle to ensure they are "worked" round and round. If the angles are zero and there is no movement in the UJ (Mainly in a car with hard rear suspension and minimal travel) the rollers will become flat spotted after many kays. Once they start the get worse and worse. This ends up wrecking them and the drive shaft will get sloppy/noisy. Quote Link to comment Share on other sites More sharing options...
Brock-Lee Posted February 16, 2012 Share Posted February 16, 2012 Pinion angle alone will not give or take away traction. What it c does is stops you from fucking u joints in the driveshaft. What truenotch is talking about is moving the instant centre of the rear suspension which will change how the car reacts under power/braking. Once I am at a proper computer I will provide some links to show what I am on about but using pinion angle for anything otuher than not breaking uj's is wrong. Quote Link to comment Share on other sites More sharing options...
drftnmaz Posted February 16, 2012 Share Posted February 16, 2012 very interested in this! would love abit more traction at low speed in the drift car Quote Link to comment Share on other sites More sharing options...
DavidTheCreator Posted February 16, 2012 Share Posted February 16, 2012 subscribed Quote Link to comment Share on other sites More sharing options...
Steelies Posted February 17, 2012 Share Posted February 17, 2012 i over-corrected pinion angle in my wagon just recently, it points up too much. 25-40mph gives some sweet vibrations, particularly under engine braking. bum Quote Link to comment Share on other sites More sharing options...
escortwags Posted February 17, 2012 Author Share Posted February 17, 2012 cheers for the info yo! Will post a pic up tonight of my said issues and see if anyone can see the solution Quote Link to comment Share on other sites More sharing options...
escortwags Posted February 18, 2012 Author Share Posted February 18, 2012 Ok so deal is pinion is at -5 and gearbox will sit at about -3 Will be running a two piece d shaft. Is this going to kill my universals? Gap to floor is less than 20mm from the head Quote Link to comment Share on other sites More sharing options...
Truenotch Posted February 18, 2012 Share Posted February 18, 2012 Just make sure there is a bit of angle on your u-joints and it will be fine. This might mean the hanger bearing needs to be spaced to suit. Quote Link to comment Share on other sites More sharing options...
escortwags Posted February 19, 2012 Author Share Posted February 19, 2012 very good, shall keep you posted on how it goes Quote Link to comment Share on other sites More sharing options...
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