mgwally

So it all started with my water-pump making noise (see thread here: https://rennlist.com/forums/997-gt2-...ing-noise.html) and somehow turned into the infamous "coolant pipe fix" project. My GT3 has about 38K miles so I'm trying to do as much as I can while the engine is out. I'm going document the whole process so I figured I'd start a new thread.

Here's what I have ordered thus far:

• BBI Porsche 997.1 GT3 Billet Coolant Pipe Kit
• Shark Werks GT3 Coolant Pipes http://www.sharkwerks.com/products.php?pid=386
• Function-First Transmission mount insert. I chose the “Orange” version, which is the softest. Is this ok? http://www.function-first.com/produc...s-mount-insert
• RSS Tarmac Performance Engine mount.
• GT3 Clutch Kit - RS 4.0 Upgrade https://www.suncoastparts.com/product/PKGT340CON.html
• OEM Spark Plug Set
• OEM Ignition Coil Set
• OEM Engine Serpentine Belt (GT3)
• OEM Replacement Fuel Filter
• OEM Coolant Reservoir Tank
• OEM Water Pump

Local specialty Porsche NJ shops are quoting me from $1500 in labor all the way up to $4000. Still deciding on who to go with. Anything else I'm missing before my baby goes under the knife?

tasman

Consider replacing diff at same time as engine will be out

177mph

RennOracle

Do diff, guards is the way to go. As you are there ask them to check torque of the cam bolts and to mark them so you can check them yourself. There is a bigger torque number than oem that has been proven reliable, see if you find it, if so tell them to use that, if not, use the oem.

ohhhhb and get either an harmonic pulley from the 4.0 rs or get the one dundon sells to couple with the lwfw.

grrrmonster

I'm doing almost exactly same thing
I spoke to a friend who is a tech at Porsche, he advised pulling fuel injectors and send them out to be professional cleaned and benchmark spray patterns. And to have intake cleaned.
We are going to do a leak down test to ascertain health of valves. If necessary may do valve adjustment or maybe valve job pending what leakdown indicates.

mgwally

I think I'm going to skip the diff. Not really tracking the car.

mgwally

Good call! I'll take your advice on the injector cleaning and valve adjustment.

mgwally

You got me thinking on the harmonic pulley. Pretty pricey from Dundon and I can't seem to find the OEM RS 4.0 anywhere.

Mr.Anderson

If you are doing the 4.0 Clutch Kit, Have them look at your cam bolts. The single mass flywheel can create some more vibration. Just do a search and you will see what I mean. a few places like TPC make a fix for this.

I had mine engine out and did BBI Welded fittings in Feb. I replaced every O Ring I could find. Because I did not want to get back in there to fix a 8 yr old o-ring later!

Spyerx

--Is your car a 3.8 or 3.6?
--There are no valves to adjust on these cars!??! Porsche moved to hydraulic lifters on the 993
--If your car is a 3.8, checking the cam actuator bolts is good preventative measure. BBI and a few other shops have techniques and bolts available for this
--While the motor is apart replace all rubber and o-rings you can, this is good preventative maintenance
--while motor and trans are out of the car, inspect PS lines, fuel lines, drive shafts, electrical, etc for wear or issues.
--diff is nice to have for sure

mgwally

Thanks guys! My car is a 3.6L. Just got off the phone w/ TPC and they said the 3.6L doesn't really require the cam bolts mod. Very unlikely I'll have any issues according the Tom over at TPC.

mgwally

Any experience w/ the Wavetrac diff?

Jake951

Replace all rubber coolant hoses! I did this when I had my engine out for new coolant pipes to be welded in. The rubber ages over time and those hoses will eventually fail. I saw this happen to a 997.2 GT3 RS at WGI just last weekend. A rubber hose failed, dropping coolant, and leading to a spin.

MJFDDS

Agree, just had the motor dropped for new clutch and LWFW as well as tall of Sharkwerks elbows and was recommended that all the coolant hoses be replaced.

bmwtye

If you are considering diffs you should look into the Holinger

https://www.dundonmotorsports.com/pe...nital?carid=38