TT on high mile block?
Thread Starter
Burning Brakes
Joined: Jan 2005
Posts: 776
Likes: 0
From: Mount Juliet Tennessee
TT on high mile block?
ok here goes. My 99 C5 has over 100 thousand miles. I bought a TT kit for it and I am thinking of just throwing it on the stock block as is with some fuel upgrades. My car has babied highway miles. Will I be able to pump about 550 to the wheels out of this highmile block for atleast some time if I don't get on it all the time? Basically I chose the twin turbos over heads and cam. Whats your opinion?
Melting Slicks
Joined: Sep 2002
Posts: 3,064
Likes: 95
From: MI
Hopefully you are asking this question, with your solution already identified. But here goes...
The kit that were trying to sell is way overkill for a stock block. I think the turbos were T4's or T6's. You will at least need to get the turbos sized more appropriately for the combination. Even then, its not a matter of will it blow, but when will it blow. Do it right forge the block. With the complexity of the kit that you have, you'll save on labor by doing the motor while everything is out and apart.
The kit that were trying to sell is way overkill for a stock block. I think the turbos were T4's or T6's. You will at least need to get the turbos sized more appropriately for the combination. Even then, its not a matter of will it blow, but when will it blow. Do it right forge the block. With the complexity of the kit that you have, you'll save on labor by doing the motor while everything is out and apart.
Thread Starter
Burning Brakes
Joined: Jan 2005
Posts: 776
Likes: 0
From: Mount Juliet Tennessee
Originally Posted by Earl H
Hopefully you are asking this question, with your solution already identified. But here goes...
The kit that were trying to sell is way overkill for a stock block. I think the turbos were T4's or T6's. You will at least need to get the turbos sized more appropriately for the combination. Even then, its not a matter of will it blow, but when will it blow. Do it right forge the block. With the complexity of the kit that you have, you'll save on labor by doing the motor while everything is out and apart.
The kit that were trying to sell is way overkill for a stock block. I think the turbos were T4's or T6's. You will at least need to get the turbos sized more appropriately for the combination. Even then, its not a matter of will it blow, but when will it blow. Do it right forge the block. With the complexity of the kit that you have, you'll save on labor by doing the motor while everything is out and apart.
Melting Slicks
Joined: Sep 2002
Posts: 3,064
Likes: 95
From: MI
Originally Posted by mdhmi
Pistons, rods, rings, bolts, timing chain, and a good oil pump for the TT's.
Mark
Mark
You are completely right (I'm rebuying all that stuff for the new combo...)... I kind of forgot about it all becuase is kind of assumed, especially if you have a high mileage block. These are things that people don't consider as they start to price things out, but the cost do add up as you start to consider those things.
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Verdad Gallardo
Safety Car
Joined: Jul 2005
Posts: 4,275
Likes: 4
From: Vancouver WA
IMO, if someone loses #7 piston, then I would say they leaned out too much on the top end. I have been following this issue on here, and that is what I am coming up with. Seems that some people doesn't have steady fuel pressure on the top. As the fuel pressure drops, the engine starts to lean.
I think a 100,000 mile motor would be more acceptable to detonation also due to oil blow by that can cause oil in the intake to get into the combustion chamfer to form carbon build-up and hot-spots. If you did do it, I would keep the boost at 5-6 psi MAX, and make sure you have good fuel supply, a good "safe" tune and decarb the motor.
I think a 100,000 mile motor would be more acceptable to detonation also due to oil blow by that can cause oil in the intake to get into the combustion chamfer to form carbon build-up and hot-spots. If you did do it, I would keep the boost at 5-6 psi MAX, and make sure you have good fuel supply, a good "safe" tune and decarb the motor.
