More HP from 3.2

[Tippy]

Originally Posted by cmcfaul

would love 50 hp from a cam. That's about what I got on the 2.4 E going to a DC 30 cam and higher CR.

Seems there is not a lot Porsche missed with the 3.2. Maybe a side turbo when the engine is freshened up. I did get the ARP rod bolts. No money shifts but do run it deep into redline often as the chip allows with no ill effects so far.

tracking down the last bits (yoke, stand).

Chris

Chris
87 Carrera 3.2

I’ll be selling an air-to-water intercooler setup and Holset HX40 soon for cheap. Made a thread on it in the 930 forum under my name.

Would only need headers (or custom fab stock for a turbine T4 flange) and blow-off valve to make work.

[cmcfaul]

Porsche guy likely doing the head machine work is saying I should replace all head studs. I thought only Delvar studs should be replaced. I think my car has all steel.

Thoughts on proactively replacing all head studs. Would hate to break any in the process.

Thanks

Chris
89 Carrera

[PeteKz]

My view as a mechanical engineer: If the studs are original Porsche steel, and they do not have significant corrosion, keep them as-is, and don't remove them. If significant rust, you and your machinist decide whether to replace. If the case needs the cylinder spigots machined, then you have to remove them.

What does he want to replace them with--Porsche steel studs? Either way paint them with a good paint to protect against future corrosion.

Caveats: This is for a street car with a 3.0 or 3.2 case, not a racing engine. There aren't other factors mitigating to replace them.

[cmcfaul]

That makes sense. See what they look like then replace if needed.

He mentioned ARP and the steel ones with the thread all the way. If just one or a few are questionable thoughts on replacing only the bad ones with OEM studs so everything matches.

Sincere Thanks,

Chris
89 Carrera

[ahh911]

Seeing how easy it is to take out head studs (red loctite requires heat on the spigot, then it comes out like butter with a simple extractor from hardware store, see link below), I'd replace all of them without a second thought.


Straight forward head stud removal using torch and simple extractor:
https://forums.pelicanparts.com/911-engine-rebuilding-forum/1048731-broken-head-studs-2.html

Phil

[Henry Schmidt]

Quality rebuilds require quality hardware. We build every engine with Supertec head studs. Not because we make them but because they have offered the best results of any options we've tested. Not just cylinder to head stability but ease of assembly makes them worth the investment. Build it right the first time and enjoy your Porsche for a lifetime.
Available from our host. https://www.pelicanparts.com/search/?q=supertec+head+studs&redir=yes&host=search








Coming soon: Case through bolts that vastly increase case stability. Proto-type below.