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Title: How tight should the intake manifold's bolts be?
Post by: paulfj03 on October 02, 2011, 10:18:41 AM

Hey guys,

Ive tried searching and googling, and looking through the Clymers and Haynes, but no such luck. Does the old philosophy: 'tighten them so that they are tight,....but not too TIGHT!...' apply here?

Or is there a specific torque wrench setting used here?

Thanks

Paul

Title: Re: How tight should the intake manifold's bolts be?
Post by: craigo on October 02, 2011, 11:26:07 AM

Hi Paul,

From the Yamaha Service manual, I found this chart of general torque specs. Hope this helps.

(http://i949.photobucket.com/albums/ad337/craigo987/FJ11001984ServiceManual272.jpg)

Or listed on this chart as carb joints....

(http://i949.photobucket.com/albums/ad337/craigo987/FJ11001984ServiceManual264.jpg)

Looks to be at 7.2 Ft Lbs

CraigO

Title: Re: How tight should the intake manifold's bolts be?
Post by: paulfj03 on October 02, 2011, 11:49:16 AM

Thanks Craig for the quick reply!

That table helps alot! I also wondered if ANY of the bolts that thread directly into the aluminum casings/engine parts had a high range of torque values... they dont. I was just going to tighten them the same as the cam chain tensioner..... It would have been fine. With that table I see now that the settings are just based on the size of the nut/bolt going into the threads of the aluminum engine. :biggrin:

Should be good now! :drinks:

FJowners.com

General Category => Maintenance => Topic started by: paulfj03 on October 02, 2011, 10:18:41 AM