Blew my HEADGASKET :(
Registered User
Joined: Feb 2004
Posts: 4,880
From: In a Canyon - Really :)
Rep Power: 290
Good luck. I hope it comes together quickly.
Registered User
Joined: Jul 2005
Posts: 3,771
From: Seattle WA
Rep Power: 225
Don
Sorry I missed your call, I was at a dinner party. Ill call you tommorrow. I have a set of liner, we can talk about a price tommorrow.
Jag
PS...I want to see pics of the HG. Pics of mine are on my thread.
Sorry I missed your call, I was at a dinner party. Ill call you tommorrow. I have a set of liner, we can talk about a price tommorrow.
Jag
PS...I want to see pics of the HG. Pics of mine are on my thread.
Last edited by jags911tt; Dec 18, 2009 at 10:13 PM.
Registered User
Joined: Apr 2009
Posts: 2,949
From: Virginia
Rep Power: 575
<snip>
If you are running a H20/Meth kit to provide fuel enrichment or octane/anti detonation you are risking your engine. You are relying on the methanol to get into EACH cylinder. What happens if we don't have a even distribution of meth and we lean out one cylinder.. The ECU will not correct for that "hole" The widebands will correct one bank to each other.. Yes, it will see the knock and retard that cylinder but it's a little to late.
<snip>
If you are running a H20/Meth kit to provide fuel enrichment or octane/anti detonation you are risking your engine. You are relying on the methanol to get into EACH cylinder. What happens if we don't have a even distribution of meth and we lean out one cylinder.. The ECU will not correct for that "hole" The widebands will correct one bank to each other.. Yes, it will see the knock and retard that cylinder but it's a little to late.
<snip>
Sorry but I think you're mistaken here. If this were the case you wouldn't see individual cylinder trims occurring in the ECU. It's quite possible for an ECU to correct per cylinder with an O2 in the collector and I'd be dumbfounded if Porsche wasn't doing that in these OBD-II cars...
Registered User
Joined: Apr 2009
Posts: 2,949
From: Virginia
Rep Power: 575
With this ECU it is bank to bank.. Knock is retarded per cylinder.. When you bench flow test the intake manifold (basically the same intake since 1992) You will find that certain cylinders are "favored".... When you turn it into a wet manifold the dynamics change.. You better make sure that the methanol is getting down each intake equally..
C'mon the EECIV from FORD did it many years ago and the Porsche is way more sophisticated, this makes no sense. Heck the Ford didn't even have a knock sensor on the V8s 
Very scary if this is true. 
Registered User
Joined: Jun 2005
Posts: 8,509
From: Virginia, USA
Rep Power: 789
In a related story, Protomotive ended up unknowingly using a set of those bad studs on my buddy's 3.8L build. After he got the car home, he blew his head gasket at only 1.2 BAR. Guess what? No coolant leaks. Dry as a f'ing bone. But the sound was obvious, as was his power loss. Proto repaired his motor at thier expense for something that wasn't even their fault. Different studs were installed and now 2+ years later, the car is 100% rock solid at 900+ rwhp. It's driven 4-5 times per week.
Anyway, as Kevin said earlier, yes...these cars can and do blow head gaskets without leaking any coolant. I've seen it with my own eyes.
Last edited by Divexxtreme; Dec 19, 2009 at 08:39 AM.
Former Vendor
Joined: Nov 2009
Posts: 1,183
From: South Florida
Rep Power: 0
Are you SURE about this? (emphasis mine) These engines do not correct cylinder to cylinder? If so my 1988 Mustang was further advanced. Sorry but I think you're mistaken here. If this were the case you wouldn't see individual cylinder trims occurring in the ECU. It's quite possible for an ECU to correct per cylinder with an O2 in the collector and I'd be dumbfounded if Porsche wasn't doing that in these OBD-II cars...
Sorry but I think you're mistaken here. If this were the case you wouldn't see individual cylinder trims occurring in the ECU. It's quite possible for an ECU to correct per cylinder with an O2 in the collector and I'd be dumbfounded if Porsche wasn't doing that in these OBD-II cars...Mike
Registered User
Joined: Apr 2009
Posts: 2,949
From: Virginia
Rep Power: 575
Correct, it depends on knowing the distance from plug to O2 sensor in order to know which pulse is being read. High speed RPMs, moving the O2 (stupid), and sensor speed can all play into this. But the O2 on my Ford wasn't even a W/B and it had corrections. I'm pretty sure it had it anyway.
Frankly anything OBD-II sure as heck should have it. In any case it's not something you lean on any more than you would a knock sensor.
Frankly anything OBD-II sure as heck should have it. In any case it's not something you lean on any more than you would a knock sensor.
Registered User
Joined: Jul 2005
Posts: 3,771
From: Seattle WA
Rep Power: 225
A little history for those that aren't aware, but a couple of years ago ARP had released a bad batch of head studs to the market. Looks like Don unfortunately had them on his car.
In a related story, Protomotive ended up unknowingly using a set of those bad studs on my buddy's 3.8L build. After he got the car home, he blew his head gasket at only 1.2 BAR. Guess what? No coolant leaks. Dry as a f'ing bone. But the sound was obvious, as was his power loss. Proto repaired his motor at thier expense for something that wasn't even their fault. Different studs were installed and now 2+ years later, the car is 100% rock solid at 900+ rwhp. It's driven 4-5 times per week.
Anyway, as Kevin said earlier, yes...these cars can and do blow head gaskets without leaking any coolant. I've seen it with my own eyes.
In a related story, Protomotive ended up unknowingly using a set of those bad studs on my buddy's 3.8L build. After he got the car home, he blew his head gasket at only 1.2 BAR. Guess what? No coolant leaks. Dry as a f'ing bone. But the sound was obvious, as was his power loss. Proto repaired his motor at thier expense for something that wasn't even their fault. Different studs were installed and now 2+ years later, the car is 100% rock solid at 900+ rwhp. It's driven 4-5 times per week.
Anyway, as Kevin said earlier, yes...these cars can and do blow head gaskets without leaking any coolant. I've seen it with my own eyes.
Scott
Dons engine is stock.
Registered User
Joined: Jun 2005
Posts: 8,509
From: Virginia, USA
Rep Power: 789
Oops! Sorry about that! Got him confused with another guy on the forum...
My primary point was that these cars can blow headgaskets without leaking any coolant. This is the second car I've seen/heard of this happening to.
Thank you for the correction, Jags.
My primary point was that these cars can blow headgaskets without leaking any coolant. This is the second car I've seen/heard of this happening to.
Thank you for the correction, Jags.
Registered User
Joined: Jul 2005
Posts: 3,771
From: Seattle WA
Rep Power: 225
it was like a coolant hose had blown - coolant just pouring out
Registered User
Joined: Jul 2006
Posts: 8,930
From: ga
Rep Power: 552
Stick with what you know, and the road course isn't it.
Registered User
Joined: Jun 2005
Posts: 8,509
From: Virginia, USA
Rep Power: 789
I'm done with the rest of that but I couldn't leave this one alone. I'm sure glad you know me well enough to know what I want better than I do. I'm sure Tom Kerr, 1BadGT2, Stevo, GT2RSR, Al Norton and the tons of other guys that have built dedicated track car turbos will be sure to go start from scratch in GT3's.
Stick with what you know, and the road course isn't it.
Stick with what you know, and the road course isn't it.
I do know that Porsche specifically designed the GT3 and GT3RS to be street-legal track cars, so it seems obvious to me it would be a better choice for that purpose. I'd venture to guess that a lot of GT3 owners would agree with me on that point.
But if people want to spend the time, money and effort modifying a TT to be a dedicated road-course car, instead of simply buying a more purpose-built car like a GT3 or GT3RS, that's obviously their prerogative.
I'm simply saying that that's not what I would personally do, were I ever to get the itch to play around on road-courses. But you're the expert!
Last edited by Divexxtreme; Dec 19, 2009 at 02:34 PM.