Fuming in my own juices: Coolant Pipes
#46
Rennlist Member
Many of us have gone from 993 to 996 GT3. They have many similarities, and it is a natural evolution...just more of everything. They are both drivers cars.
Did I mention more expensive?
Did I mention more expensive?
#47
Rennlist Member
Thread Starter
"Did I mention more expensive?" And worth every penny...that first acceleration run to 8,000 RPM under WOT convinced me I had made the right decision. Ir's amazing what 100 more HP and monster brakes with a modern suspension can accomplish. It's unfortunate for some, that there are so few 6 GT3 MK2 cars to be had. How many were made for the NA market, 1,500 tops? That's not a lot of cars..especially compared to the 993 model run.
#49
Racer
Aero can wait IMO.. get it later when you're confident.
#50
Rennlist Member
Best mod I ever done was upgrading the lsd to guard for track. Stock internals don't last long if you doing quite a few trackdays per year. A grenaded stock internal pos brass will make your day at the track miserable. Unwanted rear end stability under braking i.e. Waggling rear end and severe lag powering out of turns. Mike
#51
The handling problems caused by worn LSD
Best mod I ever done was upgrading the lsd to guard for track. Stock internals don't last long if you doing quite a few trackdays per year. A grenaded stock internal pos brass will make your day at the track miserable. Unwanted rear end stability under braking i.e. Waggling rear end and severe lag powering out of turns. Mike
But did you mean to say that the stock parts shattered (grenaded), causing the instability? or were the parts simply worn?
The reason I ask is because I rebuilt my LSD with stock parts and after just a few track days and 15,000 street miles over a few years and I'm wondering why the car doesn't handle like I remember. I have not researched it that much and I am not experienced driving the car hard. Posters state how important a good LSD is, but don't really seem to explain the type of handling problems caused by worn parts. So I appreciate your explanation.
#52
Obviously you meant to say "Unwanted rear end instability under braking...."
But did you mean to say that the stock parts shattered (grenaded), causing the instability? or were the parts simply worn?
The reason I ask is because I rebuilt my LSD with stock parts and after just a few track days and 15,000 street miles over a few years and I'm wondering why the car doesn't handle like I remember. I have not researched it that much and I am not experienced driving the car hard. Posters state how important a good LSD is, but don't really seem to explain the type of handling problems caused by worn parts. So I appreciate your explanation.
But did you mean to say that the stock parts shattered (grenaded), causing the instability? or were the parts simply worn?
The reason I ask is because I rebuilt my LSD with stock parts and after just a few track days and 15,000 street miles over a few years and I'm wondering why the car doesn't handle like I remember. I have not researched it that much and I am not experienced driving the car hard. Posters state how important a good LSD is, but don't really seem to explain the type of handling problems caused by worn parts. So I appreciate your explanation.
#53
Rennlist Member
Pretty much the internals are worn to point it's an open differential. Tail wagging rear end as one mentioned under high speed braking is very noticeable. You get nervous when it happens. Powering out of turns with a worn down internals feels like you're on 4th gear on a 2nd gear shift. You literally lose 3-4 seconds on a 2 minute track with a worn lsd. The rear engine placement of 911's makes it extremely noticeable. Mike
#55
Unfortunately the '6GT3 I bought a few weeks ago is at a shop 500 miles from me so I can't go see it
But the engine is out and coolant lines are being pinned, Guard 40/60 LSD going in.
Otherwise, mostly routine stuff which is still adding up to quite a bit.
New transmission mounts (Urethane Sport 60A) since one was broken and new motor mounts (hydraulic).
Replace water pump, rear main seal, plugs, ignition coils, coolant expansion tank, myriad hoses and seals.
They also found a small oil leak on top of the engine that was not visible (and not picked up in the two PPI's that were done on the car) so that's getting addressed too, quite a lot of labor for that.
The front fender liners are being replaced as they are cracked; brake air deflector on one side too.
Getting a new throw-out bearing, but the clutch is a practically new 997.2 part number and the DMF and pressure plate are hardly worn and have probably been replaced - so I'll leave them in for now.
I've been a little torn on the track vs street issue on the mounts and the flywheel.
But since the flywheel is in excellent condition I've decided to bias toward the street for now by staying with the DMF and not putting in semi-solid or solid mounts.
They can be changed later if I end up at the track a lot.
But the engine is out and coolant lines are being pinned, Guard 40/60 LSD going in.
Otherwise, mostly routine stuff which is still adding up to quite a bit.
New transmission mounts (Urethane Sport 60A) since one was broken and new motor mounts (hydraulic).
Replace water pump, rear main seal, plugs, ignition coils, coolant expansion tank, myriad hoses and seals.
They also found a small oil leak on top of the engine that was not visible (and not picked up in the two PPI's that were done on the car) so that's getting addressed too, quite a lot of labor for that.
The front fender liners are being replaced as they are cracked; brake air deflector on one side too.
Getting a new throw-out bearing, but the clutch is a practically new 997.2 part number and the DMF and pressure plate are hardly worn and have probably been replaced - so I'll leave them in for now.
I've been a little torn on the track vs street issue on the mounts and the flywheel.
But since the flywheel is in excellent condition I've decided to bias toward the street for now by staying with the DMF and not putting in semi-solid or solid mounts.
They can be changed later if I end up at the track a lot.
#56
Racer
Unfortunately the '6GT3 I bought a few weeks ago is at a shop 500 miles from me so I can't go see it
But the engine is out and coolant lines are being pinned, Guard 40/60 LSD going in.
Otherwise, mostly routine stuff which is still adding up to quite a bit.
New transmission mounts (Urethane Sport 60A) since one was broken and new motor mounts (hydraulic).
Replace water pump, rear main seal, plugs, ignition coils, coolant expansion tank, myriad hoses and seals.
They also found a small oil leak on top of the engine that was not visible (and not picked up in the two PPI's that were done on the car) so that's getting addressed too, quite a lot of labor for that.
The front fender liners are being replaced as they are cracked; brake air deflector on one side too.
Getting a new throw-out bearing, but the clutch is a practically new 997.2 part number and the DMF and pressure plate are hardly worn and have probably been replaced - so I'll leave them in for now.
I've been a little torn on the track vs street issue on the mounts and the flywheel.
But since the flywheel is in excellent condition I've decided to bias toward the street for now by staying with the DMF and not putting in semi-solid or solid mounts.
They can be changed later if I end up at the track a lot.
But the engine is out and coolant lines are being pinned, Guard 40/60 LSD going in.
Otherwise, mostly routine stuff which is still adding up to quite a bit.
New transmission mounts (Urethane Sport 60A) since one was broken and new motor mounts (hydraulic).
Replace water pump, rear main seal, plugs, ignition coils, coolant expansion tank, myriad hoses and seals.
They also found a small oil leak on top of the engine that was not visible (and not picked up in the two PPI's that were done on the car) so that's getting addressed too, quite a lot of labor for that.
The front fender liners are being replaced as they are cracked; brake air deflector on one side too.
Getting a new throw-out bearing, but the clutch is a practically new 997.2 part number and the DMF and pressure plate are hardly worn and have probably been replaced - so I'll leave them in for now.
I've been a little torn on the track vs street issue on the mounts and the flywheel.
But since the flywheel is in excellent condition I've decided to bias toward the street for now by staying with the DMF and not putting in semi-solid or solid mounts.
They can be changed later if I end up at the track a lot.
#58
GT3 player par excellence
Lifetime Rennlist
Member
Lifetime Rennlist
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#60
Rennlist Member
Thread Starter
WSIR in February
I will be there (WSIR), assuming I can get my rear brakes sorted out, converting from PCCB to iron, means I need 350mm rear rotors...not GIRO 2 piece...lose parking brake. Not going to lose parking brake....