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  #1  
Old 01-21-2003, 03:57 PM
Blue94 Blue94 is offline
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I'm finding loose bolts!

So my car whistles. Okay. I thought it was the o-ring that I replaced on my power steering pump. I replaced it again and it still whistles. Upon closer inspection I found a loose bolt laying on the motor block!! I was alarmed at first but as I reached down for it I noticed that it has been there for a while. I then noticed a hole in the intake manifold where the whistle could have been coming from. Sure enough the bolt went in and the bolt behind it was loose too! That fixed the whistle but my car is falling apart! Is there anything else I should check for just coming apart? Has this happened to anyone else?
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  #2  
Old 01-21-2003, 04:23 PM
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Earthworm Earthworm is offline
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I would check all the intake bolts. When I bought mine half of them were loose.

Does your car run/idle better now with that bolt replaced?
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  #3  
Old 01-21-2003, 06:23 PM
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svx_commuter svx_commuter is offline
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Yes those intake bolts do seem to work loose for some reason. There are so many of them and half are hidden. Can it be the factory forgot to tighten them up?
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Old 01-21-2003, 06:34 PM
Blue94 Blue94 is offline
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Now that you mention it, it was idling rough just before I found the loose bolt. Just for clarification purposes, there is six bolts right? And does anybody know the torque specs on them? I just tighten them down but I would hate to warp the manifold if I did it to tight.

I would just like to thank those who take the time to respond. I have been a member of a similar site for my other hobby and usually have to wait days for any responses. Since I have been on this site I have received sound advice and comments almost immediately, thanks again.

Blue
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Old 01-21-2003, 07:48 PM
Blue94 Blue94 is offline
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Well rather than clutter the site with another thread I will ask this question here and hope for responses. I am reading up on the rear wheel bearing and believe I have a good indication of the procedure. However I have been on this site for nearly 3 hours and have yet to find a torque spec for the lateral bolt. The axle bolt has been stated at 126-150 but no one ever seems to say the lateral bolt torque. What is a good source for all these torque specs?
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  #6  
Old 01-21-2003, 09:58 PM
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Stevebsy Stevebsy is offline
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Significant Technical Input Registered SVX
Lateral link bolts?

Torque for those is (ft-lb):

for the shorter ones: 61-83
for the longer ones: 72-101

for the trailing link it is:
101-130 for the short one
80-101 for the long ones

hope that is what you need
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Old 01-21-2003, 10:34 PM
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Quote:
Originally posted by Blue94
...snip...Just for clarification purposes, there is six bolts right? And does anybody know the torque specs on them? I just tighten them down but I would hate to warp the manifold if I did it to tight.
...snip
Alldata's diagram shows 5 per side at 17-20 ft-lbs torque
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  #8  
Old 01-21-2003, 11:01 PM
Blue94 Blue94 is offline
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Five huh? Well better get the flashlight out. Thanks!! I’ll bet you anything that I over tightened them. Good thing I haven’t driven it yet. One question on the Lateral bolt torques. It was stated 61+ for the Short one and 72+ for the longer one, but (and I am probably blind) I only see one bolt?


You guys are awesome!!!!!
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  #9  
Old 01-22-2003, 11:08 AM
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There are 7 bolts per side and 14 total. The intake manifold is a structural member of the engine block assembly. Why else would it be attached with all those bolts?
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Old 01-22-2003, 07:11 PM
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All the bolts are there to help prevent vacuum leaks. What happens is that the engine expands and contracts with temperature changes. The block is subjected to more heat and stress than the intake so there is a good amount of slippage occurring between the two, that's why the bolts will periodically loosen.
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Old 01-22-2003, 07:57 PM
Ron Mummert Ron Mummert is offline
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Quote:
Originally posted by Beav
All the bolts are there to help prevent vacuum leaks. What happens is that the engine expands and contracts with temperature changes. The block is subjected to more heat and stress than the intake so there is a good amount of slippage occurring between the two, that's why the bolts will periodically loosen.


Oh, no! More stuff to feed SVX paranoia. First time I'd heard about the "Loose manifold bolt syndrome". Is this a common SVX "feature"? I mean I hear no whistling, & the idle is smooth etc. But should I nonetheless go poking around these bolts with a torque wrench on a preemptive mission?

Ron (with tool in hand).
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  #12  
Old 01-22-2003, 09:04 PM
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Their torque isn't all that critical, just that they're snugged down should be adequate.
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  #13  
Old 01-23-2003, 04:38 AM
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Don't worry about loose bolts.

I have a screw loose and it's driving me nuts.


(OK SVXers, you can't miss with a straight line like that)
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  #14  
Old 01-23-2003, 10:13 AM
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I plan on checking those loose bolts once a year, spring time I think would be best.

LMBS Indeed

to go with

WBRS, BWBS and FDDSVS.
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