ditchdiggerjcf Posted December 29, 2010 Share Posted December 29, 2010 What size are the exhaust studs on my 91 3.0 engine. A thread from a while back talked about buying new studs or bolts from NAPA to replace the factory studs. Is the NAPA stuff any better? Link to comment Share on other sites More sharing options...
MY1PATH Posted December 29, 2010 Share Posted December 29, 2010 (edited) I THINK it was M8x1.25. anyway get the early 300zx turbo studs they are stronger and less prone to breaking. Napa should have them If you look up by 84-87 nissan 300zx turbo. Edited December 29, 2010 by MY1PATH Link to comment Share on other sites More sharing options...
Precise1 Posted December 30, 2010 Share Posted December 30, 2010 Yes, the are M8x1.25 and the factory studs were weak, almost anything is better but the ones for the 300zx turbo are the right thread, length and are sufficiently stronger. B Link to comment Share on other sites More sharing options...
Tungsten Posted December 30, 2010 Share Posted December 30, 2010 Nissan issued a TSB and provided revised studs check the service records to see if you have the revised ones before you go spend the cash Link to comment Share on other sites More sharing options...
William Posted December 27, 2011 Share Posted December 27, 2011 Nissan issued a TSB and provided revised studs check the service records to see if you have the revised ones before you go spend the cash while on that same topic, I read somewhere on NPORA that the 300ZX Turbo studs that we need are: I looked for these online and found them at www.nissanpartszone.com However, if you simply SEARCH for them, they will be reported under Nissan Quest: On the Pathfinder page, those same studs were highlighted as the revised# for the WD21: I wasn't able to find the Nissan Part Number for the 300ZX Turbo studs on that website though William Link to comment Share on other sites More sharing options...
jj big shoe Posted December 28, 2011 Share Posted December 28, 2011 I used stainless hex head bolts, but if I were to do it again I'd use the ZX studs simply because its easier to line up the exhaust gasket when bolting the headers/manifolds back on. You have to hold everything in place while you screw at least two of them in when using the bolts. With the studs, the gasket and exhaust will hang on them while you nut 'em down. Link to comment Share on other sites More sharing options...
William Posted December 28, 2011 Share Posted December 28, 2011 I used stainless hex head bolts, but if I were to do it again I'd use the ZX studs simply because its easier to line up the exhaust gasket when bolting the headers/manifolds back on. You have to hold everything in place while you screw at least two of them in when using the bolts. With the studs, the gasket and exhaust will hang on them while you nut 'em down. Will surely do that But is the 14065-V5004 the correct OEM number for the "revised" Pathfinder / Nissan Quest or 300ZX? William Link to comment Share on other sites More sharing options...
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