decided to pull the trigger on the flywheel/IMS/RMS repairs/upgrades

all, since purchasing my 1999 996 last week i've been using it occasionally and looking forward to putting an end to the clutch chatter which is slight but present. the transmission/clutches in these cars are so nice and smooth. i've really enjoyed tooling around town. my plan is to take the car into akers porsche this week on wed or thursday to have the flywheel either turned or replaced, the RMS and IMS upgrades performed. a few people suggested doing the AOS and i just wanted to respond by saying that according to the most recent service records, the AOS(part#99610704751)and the crankcase vent valve(part#99610704751)were replaced 2 weeks ago nov.14th after the car had a PPI earlier in november. at that time it also had its oil/filter service. i was thinking of having the water pump changed out.(never thought i'd be using those words describing a porsche part ) .....i don't see any records indicating it was done but it is not making noise or leaking at all? **has anyone used the water pump with the steel blades? considering some of the threads discuss finding plastic remnants of their water pump blades in the oil sump i assume this is a good upgrade? thanks in advance.

steel blades are a problem when the pump bearing fail, then the blade eat the engine block... choose your death the plastic blade breaking in the coolant line will most likely also kill your engine, so... I'd go for the steel blade IF there is a porsche OEM part for it. if you find it, let me know

"...**has anyone used the water pump with the steel blades? considering some of the threads discuss finding plastic remnants of their water pump blades in the oil sump?? i assume this is a good upgrade?..." If they are finding water pump plastic in the oil sump there are other fatal problems in the engine. Maybe chain tensioner ramp plastic but not water impeller plastic, unless the engine has had a catastrophic failure.

i must have misread about the pump plastic...

Let the search button be your friend grasshopper.

OMG Steve!!! great new avatar!!! (not that I didnt like the hovermobile) - NICE SHOT! get the stock one as stated, metal eats aluminum when/if the bearing fails

thx

When I bought my replacement pump through Sunset, they said that only plastic impellers came on the factory pumps. Getting plastic pieces or steel/aluminum shavings caught in cooling passages seems about the same to me. I don't want to try to fish either out or deal with a warped head. I've simply decided that about every 4 years I'll replace the water pump. Not a financial burden. Introduces some fresh coolant into the system. Just not a big deal.

btw, my Dad had a Robin-Egg-Blue '59, followed by a '65 SC with an "airport gearbox" so it topped out at about 95mph, but got there pretty quickly. Learned to disconnect the speedometer cable so I could drive it while he was out of town. Put it back with exactly the same amount of fuel. Even found some small pieces of sewing thread he left wedged in certain places to see if someone had opened the door, etc. Put those back too. The SC was one of my favorite cars. The newer cars are different, but not necessarily better.

Quotes source post: 9057508

Thanks Ed. From my old house about 3 doors away from our current home.

RF5BPILOT: the sc's are quick little guys. when i rebuilt the original engine in my '59 i did the larger pistons and also upgraded to the 40idf webber carbs...so it is pretty close to the sc horsepower. they are beautiful machines and fun to drive. i'e done 4 trips to LA and back over the years.

Yes, replace the water pumps every 3 or 4 years I agree, but I have not read a lot of water pump bearing failures, but I have read many people finding plastic impeller blades in many places, including mine that plugged cooling passages in the heads which cracked a cylinder head. So why would you put a oem factory pump back on when you know they fail and cause major damage? I am going with a metal impeller.