flywheel bolt

[rzkas]

Hi? i have been to the store couple of times but still can't get a perfect bolt that will screw smoothly into the holes of my 95 force 120 outboard engine without messing the flywheel thread. pls help me with bolt size and bolt thread and and length.. i have the puller set to go but now i can't get the correct the bolt and it is slowing my job down. pls help pls help.

 

[wickware]

Re: flywheel bolt

Do you have a local dealer or mechanic that might know? I hate to see ?0? replies after a full day on the post. Personally, I would go with the closest fit and get the job done (hopefully) if it?s a need vs a want. My reasoning is, possibly you will strip the flywheel and need to re-tap anyway. Most of all, use a grade 8 quality into the full thickness of the flywheel. I went too deep and nicked a coil on my Old 35 HP Chrysler but the nick d/n ruin the coil. Good Luck! Jow

 

[Frank Acampora]

Re: flywheel bolt

By 95, Merc had their hands on the Force engines. The original Force flywheels were tapped for 1/4 X 20. However, Merc may have done theirs 1/4 X 28 OR possibly metric like a 6mm or 8mm bolt. English bolts will screw into the metric about 1 turn then bind up. so if this is what is happening, try metric.

 

[rzkas]

Re: flywheel bolt

By 95, Merc had their hands on the Force engines. The original Force flywheels were tapped for 1/4 X 20. However, Merc may have done theirs 1/4 X 28 OR possibly metric like a 6mm or 8mm bolt. English bolts will screw into the metric about 1 turn then bind up. so if this is what is happening, try metric.

that exactly what happening. it will screw to the top and then bind up. ok i will go back to store for more bolts. thanks. but the 1/4x20 are too small.

 

[rzkas]

Re: flywheel bolt

Do you have a local dealer or mechanic that might know? I hate to see ?0? replies after a full day on the post. Personally, I would go with the closest fit and get the job done (hopefully) if it?s a need vs a want. My reasoning is, possibly you will strip the flywheel and need to re-tap anyway. Most of all, use a grade 8 quality into the full thickness of the flywheel. I went too deep and nicked a coil on my Old 35 HP Chrysler but the nick d/n ruin the coil. Good Luck! Jow

thanks for your input and concern.

 

[Josh P]

Re: flywheel bolt

if 1/4-20 is to small try 5/16-18 its the next size up if it starts and then binds, it could be m8-1.25.

 

[rzkas]

Re: flywheel bolt

if 1/4-20 is to small try 5/16-18 its the next size up if it starts and then binds, it could be m8-1.25.

thanks i found the bolt it a m8 1.0. but i was not able to take out the flywheel

 

[Frank Acampora]

Re: flywheel bolt

Use a steering wheel puller or harmonic balancer puller. Remove the flywheel nut. Screw in the three flywheel bolts as far as they will go. Then with a ling wrench tighten the center bolt of the puller hard. You will need to block the flywheel with something like a crowbar, tire iron, or very large screwdriver, or use a strap wrench to keep it from turning. Grunt on the center bolt, then smack the center bolt hard with a heavy hammer --a couple of times if necessary. If it still doesn't come off, retighten the center bolt and try again. If that doesn't do it, heat the center of the flywheel with a propane torch with the center bolt tight. The flywheel should pop off with a bang.

When you re-install the flywheel, tighten the center nut to 90-95 foot pounds torque. Failure to get it tight enough will result in "throwing" the flywheel and snapping the key.

 

[capri1600]

Re: flywheel bolt

Why is the flywheel coming off anyhow?

Marty
http://www.martyhammersmith.com