Morning Boys

Quick stupid question for all Replacing my front exhaust studs in the head. Do they just hand tight screw in or do i use thread lock as well or torque them in with two nuts etc ??? Sorry for being a thicky

Cheers

I would have thought any threadlock would get incinerated by the temperature. Also, if you ever come to do the job again and one of them shears (more chance if it is threadlocked and it works), then it'll probably make it a total bastard to remove. I'd just thread it in using two nuts until it's seated properly. When you tighten the nut on the collar, you're turning the same way (I presume the studs aren't handed), so you'll be turning it rather than pulling it out. It will be held in place by the nut pulling against the flange on the exhaust header, so it ought to be locked in place by that. Or I could be spouting crap!

dont use threadlock. Use a load of copper slip and be very careful - these are prone to damage. If you use threadlock I imagine next time you have to remove one, it will snap.

A few people on here dont bother with the studs and nuts any more any use hex or allen bolts. I am not one of them but next time i attempt it I will go down that route.

lots of copper grease (copaslip) and hand tight for me - I want to be able to get them out by hand if I need to! not to bend or snap them = ballache

I'd not use bolts. Studs are used for a reason, or in fact several reasons. Read this...

http://www.bikersoracle.com/vfr/forum/s ... hp?t=98774

interesting read that. Even i understud it lol. Glad I bought Mr Honda studs !!!!.

Thanks once again to all for knowledge.

It might be scaremongering, however I figure that just about every engine builder in the world uses studs for inlet and exhaust manifolds for a reason...

speedy231278 wrote:It might be scaremongering, however I figure that just about every engine builder in the world uses studs for inlet and exhaust manifolds for a reason...

lol, each to their own. Studs also help you locate the headers easier but there will be arguments either way. Would also depend on the quality/material of the bolts used.

There are plenty of problems with studs and a nut - the ones on my 23 need a good butchering to get out, so i left them last time i attempted it for fear of snapping them

honda oem studs/nuts is a good plan. Expensive though.

When/If I ever get round to changing mine on the NC23, you are more than welcome to say told you so when I have issues.

Stainless studs (or bolts with there heads chopped off) are better they dont rust with the heat, and dont do the studs up tight into the engine otherwise it'll snap if the nut sieves onto it when yu come to undo it next time.