titanium bolts

[Bert]

The Brits (during the 60s) used to use brass for studs, bolts and nuts on exhaust systems and I never had any problem getting those loose.

[fastiva89]

The exhaust ones are M8x1.25x30MM same for the intake side

[bravekozak]

Thanks fast. Would you know what size bolts for the exhaust manifold?
I was planning to order some replacement studs.

[fastiva89]

The valve cover bolts are 30MM. They are the hex flange style bolts

[bravekozak]

Thanks again. I will be ordering a complete set of OEM bolts for my entire suspension from Four Green.
The bolts don't cost very much and it will be part of a larger order.
It never hurts to change them every quarter century.

[Charlie1717]

titanium bolts

Not sure but 30mm is 1 3/16 inch.. 25mm is 1 inch

and I said I'd stick with 10.9... 8.8 is equal to grade 5. I'd stick with grade 8 or 10.9

[bravekozak]

O.K. Everyone needs grade 8.8 bolts for suspension components.
Thanks.

Are the valve cover bolts 30mm long?

[Charlie1717]

I hate removing rusty fasteners. If I ever buy a new car again (probably never), the first thing I would do is replace all of the fasteners with stainless or titanium + antiseize compound (aluminum flake in grease and oil), or remove, antiseize, replace.
There are a lot of flanged metric stainless bolts on eBay that really aren't stainless. The titanium bolts are very expensive. The UK seller had to buy in economical order quantities of 100 from the manufacturer in Italy.
What size are Festiva valve cover bolts? I know one member who wished he had some corrosion resistant fasteners for the water neck bolts.
What grade bolts are the struts held on with? The titanium bolts are Grade 5.

Grade 5 would indicate it is a Standard thread vs a metric. So Grade 5 (3 hash marks on head of bolt) is equal to Metric 8.8 (marked as 8.8 )
Grade 8 (6 hash marks) is equal to Metric 10.9 (marked 10.9)
Metric 12.9 Is typical for Socket Head Cap Screws, I suppose Grade 9 would be similar....

Titanium is typically only suitable up to applications needing 8.8 or less. If the application needs something stronger than Grade 5 or 8.8 then you should not use Titanium. Usually the titanium is good when trying to reduce weight. Titanium is almost half the weight of steel.

For my Water neck bolts I used Stainless cap screws and they have worked very well, much easier for removing and putting back on.


Stainless Metric Grades are
A2- less resistant to corrosion
A4- more resistant to corrosion (marine applications)

The number after A2 or A4 (example- A4-50 or A4-70 or A4-80 or A4-100) represents the Tensile strength, Multiply the number by 10 and that indicates the tensile in MPa

VS the Standard Grades
18-8
304 (most common)
316 (more corrosive resistance)

And I'm not going to go into the differences of those, since we are all about metric!

I'd say when it comes to suspension (especially load bearing) I'd stick with 10.9, or grade 8.

[bravekozak]

How long are they?

Also, is grade 5 sufficient for strut bolts and control arms?

If so, what size are the strut bolts and LCA bolts?

[fastiva89]

The valve cover bolts are M6x1.00 and the water outlet one are M8x1.25

[bravekozak]

I hate removing rusty fasteners. If I ever buy a new car again (probably never), the first thing I would do is replace all of the fasteners with stainless or titanium + antiseize compound (aluminum flake in grease and oil), or remove, antiseize, replace.
There are a lot of flanged metric stainless bolts on eBay that really aren't stainless. The titanium bolts are very expensive. The UK seller had to buy in economical order quantities of 100 from the manufacturer in Italy.
What size are Festiva valve cover bolts? I know one member who wished he had some corrosion resistant fasteners for the water neck bolts.
What grade bolts are the struts held on with? The titanium bolts are Grade 5.