PATHRIDER Posted February 1, 2010 Share Posted February 1, 2010 Im in the process of replacing the exhaust manifold gasket on my vg30 and can somebody please tell me what size bolt the collector pipe takes? I think its called the collector pipe..Its the part where the manifold connects to the pipe with flange and 3 bolts Thanks fellas Link to comment Share on other sites More sharing options...
94pathfinder Posted February 1, 2010 Share Posted February 1, 2010 14 mm Link to comment Share on other sites More sharing options...
Precise1 Posted February 1, 2010 Share Posted February 1, 2010 That is the hex head diameter, not the thread diameter and pitch. Sorry, I'm not running stock exhaust... B Link to comment Share on other sites More sharing options...
PATHRIDER Posted February 2, 2010 Author Share Posted February 2, 2010 That is the hex head diameter, not the thread diameter and pitch. Sorry, I'm not running stock exhaust... B I have not taken it off yet but according to my local exhaust shop its 10MM..Hey B just came from fasteners today and they have a 8X30X1.25 in 8,8 zinc plated but I opted for the 10.9..I think I used 8.8 on my opther pathy when I installed my thorleys thats why on the other thread I mentioned a 8 grade Link to comment Share on other sites More sharing options...
Precise1 Posted February 2, 2010 Share Posted February 2, 2010 Ok, I'm guessing M10x1.5 then, but it's just a guess. LOL, I guessed where the fastener grade 8 came from, most people do that. 8.8 gets called grade 8 but I believe it is much closer to grade 5. I have a chart around here somewhere that i should post... IIRC Grade 10.9 is slightly less than grade 8 and then there is a grade 12.9 (?) that I have only run into a few times?? Damn, I'm going to have to find that list. B Link to comment Share on other sites More sharing options...
PATHRIDER Posted February 2, 2010 Author Share Posted February 2, 2010 got me confused here..You mean grade 10.9 is less stronger than 8.9? Link to comment Share on other sites More sharing options...
andreus009 Posted February 2, 2010 Share Posted February 2, 2010 Your working with two different systems. Grade 5 and Grade 8 are US standards 8.8, 10.9, and 12.9 are ISO/metric standard bolts. I think that B has it right about comparison that the metric 8.8 is about equal US grade 5. Link to comment Share on other sites More sharing options...
Precise1 Posted February 2, 2010 Share Posted February 2, 2010 LOL Thanks, that was what I was trying so poorly to say. Here is a basic guide to metric bolts and their standard equivalent... http://www.sizes.com/tools/bolts_metric_standards.htm B Link to comment Share on other sites More sharing options...
PATHRIDER Posted February 3, 2010 Author Share Posted February 3, 2010 got it...hahaha...I was trying to compare metric to standard thats why.. Thanks guys for clarifying that Link to comment Share on other sites More sharing options...
BenStoked Posted February 3, 2010 Share Posted February 3, 2010 but almost on topic. anyone have the size of the starter bolts? both mine were missing when I got the truck (PO took the starter out, and I got nuttin' ) Link to comment Share on other sites More sharing options...
94 Pathy Posted January 7, 2016 Share Posted January 7, 2016 Am I reading this post correctly? I've seen some guy use Grade 8 bolts on his headers instead of the header bolts that I've used when putting my Pacesetter's on. I used 300Z bolts. I heard & was told they were stronger. I'm getting ready to put new headers on. Thinking about using Grade 8 bolts this time around. Wise choice? I think it would be easier & less chance to bust if I ever need to take them out.....Can I get some feedback on this please? Thanks! Link to comment Share on other sites More sharing options...
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