Alignment?? & upper intake question
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Freshman User
Joined: Dec 2003
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From: Alpha NJ
Alignment?? & upper intake question
being that my bronco didnt sell i started fixing it up i welded the shifter right to the shifter on the t case replaced the tailgate and repainted it so i can use it 1 last winter.
1. my question is i have after market rims which are different widths would this screw up the alignment? they all look the same in appearance but i measured and they are diff
2. i broke 2 upper intake manifolds trying to tighten them down i cant figure out why they broke at the front left lip my old intake all the ears were snapped is there suppoesed to be studs that align it or what?
thats about it for right now ive replaced almost everything on this truck see pics at http://jdimassi.corral.net and go to the photo link
1. my question is i have after market rims which are different widths would this screw up the alignment? they all look the same in appearance but i measured and they are diff
2. i broke 2 upper intake manifolds trying to tighten them down i cant figure out why they broke at the front left lip my old intake all the ears were snapped is there suppoesed to be studs that align it or what?
thats about it for right now ive replaced almost everything on this truck see pics at http://jdimassi.corral.net and go to the photo link
Posting Guru
Joined: Apr 2004
Posts: 1,399
Likes: 1
From: Corinth, TX
I'm a little confused...
Firstly, are the rims the same offset? If the tires are the same size, and the wheels are all the same offset, it shouldn't matter much if the wheel size is off by a bit. Of course this isn't optimal, but if you try and make sure that the two front wheels match you will probably be ok.
Secondly, Your truck is carbureted, no? '87 351w... should be. If that's the case, what do you mean by "upper intake?" Carb setups (usually) only have one intake manifold. The carburetor does the rest. can you take a pic of the broken one? Also, if you're tightening the lower intake manifold, make sure you follow the torque pattern pretty closely. tightening one corner all the way down first can not only lead to vacuum leaks, but could also crack the intake. That might be what's going on here.
Anyway, more info please
-JD
Firstly, are the rims the same offset? If the tires are the same size, and the wheels are all the same offset, it shouldn't matter much if the wheel size is off by a bit. Of course this isn't optimal, but if you try and make sure that the two front wheels match you will probably be ok.
Secondly, Your truck is carbureted, no? '87 351w... should be. If that's the case, what do you mean by "upper intake?" Carb setups (usually) only have one intake manifold. The carburetor does the rest. can you take a pic of the broken one? Also, if you're tightening the lower intake manifold, make sure you follow the torque pattern pretty closely. tightening one corner all the way down first can not only lead to vacuum leaks, but could also crack the intake. That might be what's going on here.
Anyway, more info please
-JD
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Freshman User
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From: Alpha NJ
it is a fuel injected and the ears keep breaking off i had it flush with the lower then i tightened everything down and click and there was a crack and its leaking pretty bad idles 2300 rpm
the old intake only used to whistle a little bit ive since thrown it out and tried to put another intake on and this one cracked too and its a loud whine now so i have to get another upper and try again
the old intake only used to whistle a little bit ive since thrown it out and tried to put another intake on and this one cracked too and its a loud whine now so i have to get another upper and try again
Hotshot
Joined: Jul 2002
Posts: 14,285
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From: Bend,OR
when you install the upper intake you need to start from the center bolts working your way out in a cross pattern \/\/\. also you need to follow the torque specs. your haynes manual should have these figures. you are probably over torquen the bolts.
Lead Driver
Joined: Sep 2002
Posts: 9,182
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From: Gateway to the West
I'll second Kem's response on the intake short of there being some problem with the LOWER intake that leaves the mounting surface uneven.
As to the wheel question, the width of the wheel won't affect the alignment however if the backspacing/offset is shallower than stock, you could see some tie rub if you are running larger than stock tires. Now, if you are running much wider wheels with a similar backspacing, the stock tire size may be too narrow and you are feeling the tires roll over onto the sidewall. Not a good thing. Most tire manufacturers don't recommend a wheel size more than 2-2.5" narrower than the tire and definitely no wider than the actual tire tread width. So, if you have 10" wide wheels and only 8" of tread width you may see sidewall roll-over like I mentioned.
As to the wheel question, the width of the wheel won't affect the alignment however if the backspacing/offset is shallower than stock, you could see some tie rub if you are running larger than stock tires. Now, if you are running much wider wheels with a similar backspacing, the stock tire size may be too narrow and you are feeling the tires roll over onto the sidewall. Not a good thing. Most tire manufacturers don't recommend a wheel size more than 2-2.5" narrower than the tire and definitely no wider than the actual tire tread width. So, if you have 10" wide wheels and only 8" of tread width you may see sidewall roll-over like I mentioned.
Posting Guru
Joined: Apr 2004
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From: Corinth, TX
Originally Posted by jdimassi
it is a fuel injected and the ears keep breaking off i had it flush with the lower then i tightened everything down and click and there was a crack and its leaking pretty bad idles 2300 rpm
the old intake only used to whistle a little bit ive since thrown it out and tried to put another intake on and this one cracked too and its a loud whine now so i have to get another upper and try again
the old intake only used to whistle a little bit ive since thrown it out and tried to put another intake on and this one cracked too and its a loud whine now so i have to get another upper and try again
good luck
