Crossover bolt size.

[Turbo6Smackdown]

Ok, after a little bit of searching I can't find the answer. Does anyone know the correct size of the crossover bolts? There's 3/8x16 in mine right now, and they're quite loose. Not sure they're right.

 

[pacecarta]

m10 x 1.5 , would have a 15mm head

 

[Turbo6Smackdown]

I see. I just threaded a 3/8x16 bolt in my M10 thread checker and sure enough, same fit-threads but super loose. Wow... My mechanic...

Thanks again.

 

[bison]

About 10-20% of the cars I've worked on had 3/8-16 bolts in those locations. People...


Sent from my iPhone using Tapatalk

 

[Turbo6Smackdown]

Dam. lol.

 

[earlbrown]

The trick with metric .vs SAE is what the bolt is threaded into. If it's a plain ole GM part, it's SAE. If it's TR specific, it's metric. That's why the header bolts are SAE (with metric outie studs) and the crossover bolts are Metric.

Much like the intake manifold. All the bolts are metric except the ones that hold it to the heads.