Update on my 75 280z

[FreshZ]

changed out the brake booster. old one was corroded

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[FreshZ]

also discovered an exhaust manifold leak so here is the current situation

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[FreshZ]

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[FreshZ]

but now I have to wait for a new gasket to arrive. the one I ordered was delivered in bubble wrap, so suffice to say, it has bent and contorted beyond use

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[FreshZ]

what's the consensus on the benefit of headers? at this point it would be super easy to add them.

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[siteunseen]

I have the MSA ceramic coated 6-1 on both my Zs and love them.  Neater engine bay, less heat under the hood and the SOUND!!!  pair that with the Premium 2.5" exhaust and it don't get much better. 

The heat reduction has been considered one of the better solutions to the EFI cars "hot restart" problem.  I've never had it with mine but I also have an aluminium fuel rail that helps also.

They'll have that stuff on sale for the holidays too.  In my opinion throw their stud kit in the trash and use something better, Nissan still makes them for a bunch of other cars.  My last rebuild I used the SS one's from zcardepot.com and am very happy with them.  https://zcardepot.com/engine/exhaust/exhaust-manifold-stainless-steel-stud-kit-240z-280z.html

[FreshZ]

so no need for a heat shield between your aftermarket headers and intake manifold?

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[FreshZ]

just checked my intake/manifold and it looks like it only requires 15 bolts. I guess the 17 piece kit is to accomodate other years?

zcardepot.com/stainless-steel-bolt-kits/engine-kits/intake-and-exhaust-manifold-stainless-steel-stud-kit.html

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[FreshZ]

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[FreshZ]

I make cardboard templates like these when I remove bolts from projects. keeps them in a reference pattern for reinstall. because we know bolt sizes are different for each location

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[FreshZ]

easy pry with bar and a few taps with rubber mallet releases the exhaust manifold from the block.

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[siteunseen]

34 minutes ago, FreshZ said:

so no need for a heat shield between your aftermarket headers and intake manifold?

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Yeah I use both but had to trim the vertical one to fit over one of the primary tubes coming off the header, very little trimming just to keep it from touching and possibly rattling at some point.  On that stud kit, I don't remember having any left over but that doesn't mean much.  

In my picture you'll see the shield notch and another place I forgot to mention, where the header touches the bell housing.  Your's may not rub but mine did and I had to slightly grind the bell house to keep the header from touching.  You need to run the shields or it'll melt your PCV hose, red with black marking on my picture.