fort_em2

These two bolts came off the exhaust manifold. One of the nuts is stripped badly. I am trying to find a replacement but the diagram shows it as a part of the manifold. The only place I could find what I thought was the right part showed the number in the picture but that line was missing out of the list. I took the bolt to the hardware store but couldn't find a nut the fit it right. Not sure if it is rusted out of size and needs the bolt replaced too, or if I need to tighten it with a wrench, but it wouldn't go past about 1/4th of an inch in the store.



Also, I can't tell if there is still gasket on my block. I have been trying to get this off for two days. It sort of feels like it might be, but I have literally tried everything - razor blades and rags and even soaking it with carb cleaner multiple times and letting it soak on it for two days. Still won't budge and I don't want to try anything crazy and get a low spot. I might just be just paranoid that I will call it good and then blow another head gasket, but don't want to take any chances.





Thanks in advance

xRiCeBoYx

iTrader: (22)

Yeah.. that nut is supposed to be welded to the exhaust manifold. However, if you want to replace the bolt and spring with OEM parts, here are the part numbers
bolt: 18231-SR3-A22
spring: 18230-SV4-000

As for your gasket situation, I got nothin. I'd wipe it down with some brake cleaner and/or Marvel's Mystery Oil and see if anything remains. I'm sure ezone will chime in with more helpful insight. lol

ezone

The nut used to be welded, now it has broken free......no big deal unless it's in an impossible spot. Nut is probably 8 x 1.25, whatever you can find in a nut&bolt bin that will thread onto the bolt......... you'd just need to hold it with a wrench while tightening the bolt into it.


You're right about creating low spots, that's a bad thing.

The block surface doesn't need to be spotless, you probably can't ever get it spotless. The important thing is SMOOTH.


I usually clean the head and block using a bunch of single edge razor blades and a can of brake cleaner or carb and throttle cleaner. I don't worry about discoloration as long as it's smooth.

fort_em2

Do you think it would be a problem to just put a random bolt in there without a spring or should I replace the bolt with oem and find a nut to fit? I sort of have a feeling that the 8x1.25 nut didn't fit because it has a little rust build up.

ezone

If you make it a solid joint it's just going to snap off the exhaust flange.

The joint has to be able to flex and move as the engine moves around....that's why it's got to have the long bolts and springs.


Did you try threading the bolt and nut together using wrenches?
Trying to thread them using just your fingers isn't always possible.


If the bolt isn't real cruddy and could be reused, wire brush the threads of the bolt if you have to. Maybe run a thread chaser or die on the threads to straighten them up. Still may need to use wrenches though.