Missing Extractor Bolts

[Not_An_Abba_Fan]

Are you sure? 8mm metric standard is 1.25mm. 8x1.5mm is an odd size.

Could be 1.25, been a while. Pretty sure they are not M10 though.

 

[shane_3800]

Could be 1.25, been a while. Pretty sure they are not M10 though.

Yea it would be 1.25 if M8 as that is the most coarse available then the metric fine is M8 x 1.0

 

[Blade_Runner]

You don't have any taps you can try in the hole? I'd buy a cheap set of taps to try for thread and size before I pulled out the extractors. Or even a few different sized bolts.
But I do hate working on exhaust headers.

I do but but I don't really want to mess with the threads if possible, funds are short at the moment aha

 

[Blade_Runner]

They should be M8 x 1.5 if they are Pacemaker. It's a ball type fitting with loose flanges that rotate around the pipe?

Nah I'm talking about what losh1971 said

 

[Blade_Runner]

Might have to clarify the car and engine. We are in VN-VP, his ride is a VT. Is the engine V6 or V8?

Sorry I thought I changed it, it's a VP V6

 

[Blade_Runner]

I'd just pull a bolt out the other side and take that to the shop.

Yeah, I pulled the piece out and I'm heading to one tomorrow. I'll post the bolt type.

 

[Blade_Runner]

long story short, bolt shop told me the bolts needed are m10 but they couldn’t get any bolt to fit the extractor. So I got some thread pitch gauges, found it to be around 1.5 and drove an m10 x 1.5 tap through it. I then bought some cheap bolts from Bunnings and bobs ya Aunty it’s back on the car. But I need to get bolts with a smaller head as these are 17mm and I can’t get a spanner or socket around em when they are up against the flange. Cheers for the help.

 

[losh1971]

V6 or V8? The V6 should be UNC not metric.

 

[losh1971]

Forget that I thought you meant the manifold studs. Go to an exhaust shop. That's where I got mine if you are referring to the the ones that connect that little short pipe on the runners.