[Davandy]

Watt can I expect inside, when I open my engine with 160000 miles on it?
I have a water leak on de intake manifold and the joint must be replaced.
That’s the reason that I open it, but I’m a little bit afraid what I will find inside :roll:

 

[84fiero123]

RE: Wat to expect inside

depends, if the leak is inside you may find antifreeze under the intake. but you said the joint must be repalced do you mean the connection for the heater hose in the top rear of the manifold?

 

[imported_Anonymous]

If there is no antifreeze leaking into the top and the oil has been changed regularly, everything should be fine.

Bought an 87 k-5 Blazer back a couple years ago from a man who had it at the dealer for a knock in the engine and the dealer told him it needed a new engine, so he bought a new truck. He had recently had a friend of his replace the intake gaskets on it and after that it began knocking. Well I took it to the garage, pulled the engine out, put it on an engine stand and took the intake off the very first thing, only to find a shop rag left in the engine and covering about half the oil ports. Talking about being shocked about what I saw! lol. Never expected that. That has absolutely nothing to do with what you will find, but just wanted to share with you my "find" story.

 

[ChevyFan]

That's like a doctor leaving an instrument inside someone after surgery!

 

[Guest]

You could find just about anything inside an engine that has over 100k miles.
but, I suspect you'll only find coolant, if even that.
Where is the leak?

 

[Davandy]

The leak is at the front of the engine, between the intake manifold and the cylinder head :roll:

 

[Guest]

Did you start working on it yet?

 

[ChevyFan]

Yeah, just curious what you find on on this project.

 

[Davandy]

This weekend I started to work on the engine, I was surprised to see how clean the engine is inside, the only thing that was wrong was the joint from the intake manifold, it was bad on two places. The reason that the engine is clean it runs on LPG :wink: , I can’t afford petrol on $6 a Gallon :evil:


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[Guest]

Oh...wow! I have a heap of questions! But I will try to refrain from asking too many.
How long has it been running LPG? How has the engine handled the conversion?
Was it a massive conversion, or did they perform a simple conversion?

 

[Guest]

Your engine looks really clean! I've read that with lpg your oil stays yellow/gold longer, and doesn't break down, and become useless as soon.


Sorry. I got all caught up in the idea that you have a '93 suburban that runs on LPG.
I'd read alot about the conversions, and from what I've read, to get maximum efficiency out of lpg you need a different camshaft, and heads with hardened steel valve seats. But I've also heard of people just setting up an impco lpg kit, and start driving.

 

[Davandy]

The engine oil stays clean en yellow on LPG.
I think it’s on LPG sins it was imported from Texas in 96 I just have it sins 2003 . :?:
I have a simple conversion, Impco 300A installation.
The modifications on the valve train aren’t necessary because the Suburban runs on unleaded fuel and already has steel valve seats.
There are three systems for LPG.

1 The simple Impco 300 A for a 5.7.
2 LPI: Liquid Petroleum gas Injection (Not reliable breaks down regularly) .
3 GSI: Gas Injection.


The first system runs great but you have 20% lost of power and a 10% increase of fuel (LPG) consumption.
The second and the third system have no lost of power but the 10% fuel consumption stays. But they are more expensive than the Impco installation.

A complete conversion in Belgium costs around $2500.


Regards
Peter.

 

[Guest]

$2500 is pretty steep for that conversion. The only thing stopping me from going propane, is that there are no filling stations around here. It would be really stressful to go on a long trip, and find myself hunting for a filling station when I get down to the last 100 miles left in the tank.