Intake Manifold Bolts

There was a previous thread (yesterday or the day before) about SHCS use. You might want to refer back to that. I don't have a good opinion about the "one-at-a-time/no new gasket" approach. I would go with a new gasket and tighten the screws in a gradual manner, but I'm cautious about aluminum. However, you do want to make sure you use a proper washer under the head of those SHCS, otherwise you're putting too much pressure on the manifold.

Lynlynch. Absolutely no problem. It would be worthwhile to use a bottom tap to clean out the threads when you do this and apply some anti-seize or lube to the threads so as to obtain propper torque readings. Its critical that the propper bolt leangth be used. Another option to consider would be to use 12 point bolts as most performance engine builders do. Make that mouse roar. J.Conway

This should be no problem. As stated, running a thread chaser would be the right move. The ones nearest the carburetor may be difficult or impossible to get to. Contact ARP at http://www.arp-bolts.com/

Replace the bolts in the tightening sequence recommended, to the torque recommended by the bolt manufacturer. With the aluminum manifold, the SS flat washers would be a good idea. ARP should have plenty of choices for you, and they have first rate quality. Good luck.

I have done what you want to do and my advise is to replace the gaskets as then you will no they are right and tight. Or you can take a chance and take them out one at a time , that's if the gasket is fairily new. A little anti-sieze wouldn't hurt, don't forget to torque them down.

Here, here.

There is a saying:- "If a job is worth doing, it's worth doing properly."

Don't be lazy...........I personally would avoid the use of anti-seize products, they can under certain conditions, when overheating occurs, cause serious problems on bolt removal.

Absolutely right. I'd add that under high heat conditions the anti seize lube will gas off which may crack the cylinder head. Bolt holes should be spotless clean.

Thank you for your approval on this one Ducky............much appreciated.

Please excuse my warped sense of humour!!!!!!!

one at atime should be fine start in middle and go around in a circle

No problem! I have done this on everything from water pumps, oil pans and intake manifolds. You need to make sure that the engine is clean and cold. I have dropped crap down bolt holes before and this will cause you problems. If you decide on Allen cap screws watch the length and use washers. Most of the aluminum manifolds have there mounting holes a tad larger allowing for wiggle in order to get all the bolts started. I have used chrome bolts and black washers before and they looked really trick. Have fun!

I would really do it all in one operation AND use new gaskets. This way you can re-torque the bolts IN THE PROPER SEQUENCE. Use a torque wrench when you tighten them down (especially with Aluminum). I am sure the torque specs are assuming new gaskets. This will decrease the odds of breaking something or having leakage problems. It is much better to do it right rather than to have to go back and do it again.

Sincerely

Bill