i need some bolt dimensions

[Rhyss_r33]

i just recently bought a coil cover for an rb25det and i need some bolts to hold it in tight
also the top bolts for the timing cover :)

[Duncan]

I believe they are m5 on the coil pack cover, and from memory they may be m5 on the timing cover as well. However, the timing cover might be a specific bolt with a wider shank where it goes through the rubber bushes. 

m5 is almost certainly 0.8 pitch (coarse)

for length, unless someone knows and assuming you can't measure the depth of the hole with a set of calipers, just buy a bunch of 20mm bolts, put them in carefully and if they tighten up/bottom out before the head tightens down just shorten them with a hacksaw. You want at least as much thread engaged as the diameter of the bolt, ie 5mm.

You should also consider what head you want on the bolts - hex for a spanner/socket, inhex for an allen key, and flat under the head vs countersunk.

[Rhyss_r33]

On 09/05/2022 at 8:31 PM, Duncan said:

I believe they are m5 on the coil pack cover, and from memory they may be m5 on the timing cover as well. However, the timing cover might be a specific bolt with a wider shank where it goes through the rubber bushes. 

m5 is almost certainly 0.8 pitch (coarse)

for length, unless someone knows and assuming you can't measure the depth of the hole with a set of calipers, just buy a bunch of 20mm bolts, put them in carefully and if they tighten up/bottom out before the head tightens down just shorten them with a hacksaw. You want at least as much thread engaged as the diameter of the bolt, ie 5mm.

You should also consider what head you want on the bolts - hex for a spanner/socket, inhex for an allen key, and flat under the head vs countersunk.

Thank you very much mate