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Intake manifold bolts

2K views 3 replies 3 participants last post by  Dadillac 
#1 ·
Bought my son a 2003 Base model 6 weeks ago. I have changed the radiator, water pump, hoses, thermostat, cap, reservoir, temp sensor. The anti freeze still ends up looking dirty and smelling awful. So I ordered from Rock Auto, Fel Pro intake gasket kit (metal gaskets), AC Delco thermostat, AC Delco temp sensor, new air bleeder since one is broken. Noticed today that the intake manifold bolts did not come with the kit. Went to Advance and picked them up and noticed that the new bolts have lock tite on them. The long bolts have blue and the short ones have red.

So now to my question. I assume that since the new bolts have lock tite that the originals have it also. So how does this affect removing the bolts from the heads? Do I need to use a torch and heat them up first? How about damaging the threads? Any info will be greatly appreciated.

Don
 
#2 ·
You shouldn't have any problem removing the bolts. I've done two of the 3.4's and a 3.8, and didn't have any issues.

You're supposed to run a thread chaser in the holes before you put the new bolts in.

I took two used bolts of the long set and cut the heads off, then grinded the ends round. One is about 1/2" shorter than the other. I use them as alignment pins when setting the lower intake back in place.

Doug

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#3 ·
Why replace the bolts? I understand replacing head bolts/studs but, lower intake bolts? Not necessary
 
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