what size is my flywheel nut? 1991 225hp v6

[phatmanmike]

well, it looks big. it looks about 1 1/2 or so. my biggest is 1 1/4 and its too small.<br /><br />also, does it need to be thinwalled to fit down into the flywheel and around the nut?<br /><br />my manual is vague at best. it only says" remove nut"<br /><br />anybody know?

 

[rodbolt]

Re: what size is my flywheel nut? 1991 225hp v6

i use a proto 1 7/16ths 12 point.

 

[phatmanmike]

Re: what size is my flywheel nut? 1991 225hp v6

rodbolt, you da man.<br /><br />send me an address, and ill get the wifey to bake you some cookies!<br /><br />you are full of usefull knowledge, and are a TRUE gem on this board!!!<br /><br />mike

 

[rodbolt]

Re: what size is my flywheel nut? 1991 225hp v6

maybe<br /> when I am not getting flamed or being sarcastic . if ya cant find it, the 3/4 drive version can be ground on the OD to fit. I have removed and replaced the flywheels using a strap wrench as a flywheel holder. trust me, rent or buy the snap-on flywheel turning tool or its equvalent. the strap wrench method is difficult but it is doable.

 

[marinemech1]

Re: what size is my flywheel nut? 1991 225hp v6

it is recommended to replace flywheel nut each time it is removed and torque to the specified torque in the service manual

 

[seahorse5]

Re: what size is my flywheel nut? 1991 225hp v6

Originally posted by marinemech1:<br /> it is recommended to replace flywheel nut each time it is removed and torque to the specified torque in the service manual

What page of what service manual states to replace the flywheel nut each time? The later model manuals mention to coat the threads with Gasket Sealer, but nothing about replacement of the nut. Same for all the years of service training classes and seminars.

 

[rodbolt]

Re: what size is my flywheel nut? 1991 225hp v6

seahorse<br /> it used to be there. the nut is a nylock and nylock nuts are a one shot locking system. technically by the book your never supposed to reuse a nylock type fastener. I dont use perfect seal but a drop of 671 locktite works well. as does gel-seal II on a thread. so I wont get into the replace the nut reuse the nut debate .