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Old 09-30-2011, 08:55 PM   #1
kicker226
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Buddys SPI rebuild

So, my buddy picked up a 03 SE for 500 with a blown motor. We were going to rebuild it for his GF but when we realized what was wrong with the motor, we decided we will fix it and sell it.

On to pictures






oil pan.... nastyyyyyy





Chris cracked the new piston when he was pressing it in.... so we are now waiting for a new one to come in. it probably wont get done until next week when i get back from Hilton NY


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Old 09-30-2011, 10:18 PM   #2
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thats why you heat them up first!
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Old 09-30-2011, 10:37 PM   #3
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I think its the design of the intake manifold or the exhaust manifold that is whats blowing these engines.

Either the intake is allowing to much air to flow into one of the ports and its running one of them way to lean or the manifold is over heating one of the cylinders.

I wonder about that EGR setup
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Old 09-30-2011, 10:43 PM   #4
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I dunno.. to be honest my egr was disconnected so it wasn't exhaust heat
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Old 09-30-2011, 11:25 PM   #5
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I dunno.. to be honest my egr was disconnected so it wasn't exhaust heat
Well springs can lose their tension after they reach a certin temp.
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Old 10-01-2011, 07:35 AM   #6
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thats why you heat them up first!
he is the mechanic.... now i wonder if he thought of that wor not.....

Quote:
Originally Posted by BowerR64 View Post
I think its the design of the intake manifold or the exhaust manifold that is whats blowing these engines.

Either the intake is allowing to much air to flow into one of the ports and its running one of them way to lean or the manifold is over heating one of the cylinders.

I wonder about that EGR setup

i have no idea. this is the first time ive ever dealt with the SPI motor.... i have a Zetec
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Old 10-01-2011, 12:47 PM   #7
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Quote:
Originally Posted by BowerR64 View Post
I think its the design of the intake manifold or the exhaust manifold that is whats blowing these engines.

Either the intake is allowing to much air to flow into one of the ports and its running one of them way to lean or the manifold is over heating one of the cylinders.

I wonder about that EGR setup
Wut?

The split port motor uses a feedback ECU (like all modern cars) that monitors post combustion (o2 sensors). If it was running lean it would add fuel just like any other car. It has nothing to do with manifold design..
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Old 10-01-2011, 02:55 PM   #8
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Wut?

The split port motor uses a feedback ECU (like all modern cars) that monitors post combustion (o2 sensors). If it was running lean it would add fuel just like any other car. It has nothing to do with manifold design..
wut? i thought the sensors just monitor the over all not for each cylinder?

On my car its in the exhaust manifold right in the center so how can it tell which cylinder is doing what?

So what your saying if i have a bad injector that is not spraying as evenly as the other three i can pinpoint exactly which one it is without just guessing and swapping them one at a time?

There is a design flaw somewhere that is causing the same valve on every one of these motors to drop. They overlooked it and decided not to correct it but to just change the whole engine.
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Old 10-02-2011, 08:46 AM   #9
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There is a design flaw somewhere that is causing the same valve on every one of these motors to drop. They overlooked it and decided not to correct it but to just change the whole engine.
youre serious when you say that? i talked to chris, and he said swe might throw another head on it, fix the piston, and tell his girlfriend to drive it.
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Old 10-02-2011, 12:41 PM   #10
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Quote:
Originally Posted by BowerR64 View Post
wut? i thought the sensors just monitor the over all not for each cylinder?

On my car its in the exhaust manifold right in the center so how can it tell which cylinder is doing what?

So what your saying if i have a bad injector that is not spraying as evenly as the other three i can pinpoint exactly which one it is without just guessing and swapping them one at a time?

There is a design flaw somewhere that is causing the same valve on every one of these motors to drop. They overlooked it and decided not to correct it but to just change the whole engine.
If there was a problem this severe that one cylinder was being destroyed by some hideous difference from the other 3, the engine would run extremely poorly. It would feel like a really bad misfire.
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