MR2 Roadster Owners Club

The Workshop => General => Topic started by: steveash on April 15, 2026, 20:24

Title: Manifold studs
Post by: steveash on April 15, 2026, 20:24
I want to fit new manifold studs when my Zero manifold arrives and I'm wondering about stainless steel or even fancy-pants titanium so they don't go all rust-ugly again. I assume this is ok as they won't be in contact with mild steel and I'd use some copper slip on the threads for good measure?
Title: Re: Manifold studs
Post by: Gaz mr-s on April 15, 2026, 22:17
Yep.  Stainless in various lengths on ebay. Copper nuts is a good idea.
Title: Re: Manifold studs
Post by: bobo83 on April 16, 2026, 16:02
Be prepared not to be able to remove some studs from the block ... I had to accept a mix of old and new studs.
Title: Re: Manifold studs
Post by: Gaz mr-s on April 16, 2026, 19:55
Quote from: bobo83 on April 16, 2026, 16:02Be prepared not to be able to remove some studs from the block ... I had to accept a mix of old and new studs.
@steveash

Sometimes the nuts are seized on the stud & they round-off, sometimes the seizure brings out the stud. And sometimes the stud shears.  The latter hasn't happened to me, but I have seen it mentioned.  A week's worth of penetrant is a good idea.

I highly recommend these.  https://www.screwfix.com/p/erbauer-hex-shank-bolt-nut-remover-set-6-pcs/6083D?tc=RB4

They were recommended to me, & I've used them on various jobs & they've never failed me.  Don't use an ordinary socket (if using new nuts), - straight on with these.
Title: Re: Manifold studs
Post by: steveash on April 16, 2026, 21:15
Ordered. Thanks for the tips.