Everything rebuilt no compression

[talonDSMerr]

That would explain a lot, glad you have some sort of lead to work with now! Best of luck to you

 

[kenuwine4g63]

That would explain a lot, glad you have some sort of lead to work with now! Best of luck to you

Yea im going to bled the lifters and see if i get the same results probably monday

 

[g4ebguy90]

you rebuilt the head. Did you recondtion the valves or buy new ones?

If you did do that, did you grind the valve seat at the correct angle?

 

[kenuwine4g63]

you rebuilt the head. Did you recondtion the valves or buy new ones?

If you did do that, did you grind the valve seat at the correct angle?

I had the machine shop to do all that. everything was redone in the head.

 

[yoshi_tony]

had the same problem i i bought a gst with the same situation so i took the head off and for some reason the rings werent sitted right turned the block while my hand was blocking a hole cylinder and i found out the gaps on the rings werent in the correct way should be like this

Im just saying mine was that ok this was exactly what was wrong with mine

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[kenuwine4g63]

had the same problem i i bought a gst with the same situation so i took the head off and for some reason the rings werent sitted right turned the block while my hand was blocking a hole cylinder and i found out the gaps on the rings werent in the correct way should be like this

Im just saying mine was that ok this was exactly what was wrong with mine

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The only thing this is, is to show how to stagger the rings. I kinda knew that one from common sense. But thanks tho, I did stagger them. The problem lies in my head and hopefully soon it'll be done

 

[91DSMdave]

We had the same problem with my friends built GS-T. Built it, drove 18 miles... lost compression. checked everything, no answers. different head with good valves, new head gasket... still horrible compression. as soon as we applied pressure for the leak down test, all the sudden the compression came back. Still to this day stumps me everytime i think about it.

 

[kenuwine4g63]

That would explain a lot, glad you have some sort of lead to work with now! Best of luck to you

Same results....nothing is going on

 

[laserspeeddemon]

I don't know what the "normal" break in compression is. But compression on a new engine is always low. As the valves where their seats in and the rings seat, etc. The compression will rise.

The valves aren't seated right now, so "hearing" the air escape is not a good way to see if it's the valves or not. Since you know that the compression is low the next step is to do a leak down test to see WHERE the air is going.

 

[kenuwine4g63]

I don't know what the "normal" break in compression is. But compression on a new engine is always low. As the valves where their seats in and the rings seat, etc. The compression will rise.

The valves aren't seated right now, so "hearing" the air escape is not a good way to see if it's the valves or not. Since you know that the compression is low the next step is to do a leak down test to see WHERE the air is going.

Thats the problem..i dont have any type of compressed air where i am(the woods). So thats a issue.

 

[laserspeeddemon]

So buy one.

 

[kenuwine4g63]

So buy one.

Ok, when you gonna send the check?

 

['97boostinGST]

Ok, when you gonna send the check?

Lol, it's for your own good not his.

Anyways, you can always rent one.

 

[Spoolin4Ever]

Re-check your timing...line everything up and the dowels should be at 12AM. If everything lines up timing wise and you are at 3AM with your dowel pins, that means the timing is OFF.

 

[kenuwine4g63]

Lol, it's for your own good not his.

Anyways, you can always rent one.

Yea, i know man. Its cool though. Im just going to get rid of it and end up geting me another one after college or when it wont interfere with my finances. Thats why i left that smart comment, nothing against him i was just saying

Re-check your timing...line everything up and the dowels should be at 12AM. If everything lines up timing wise and you are at 3AM with your dowel pins, that means the timing is OFF.

Timing is dead on. Cant get it no perfect than how i have it.

 

[audiomaster1990]

I would check and make sure some genius at the machine shop didn't put the intake cam on the exhaust side and vice versa. That would definately kill your compression i would think.

 

[talonDSMerr]

But the only was the CAS will bolt back up is if the intake cam was in the right spot.

 

[kenuwine4g63]

But the only was the CAS will bolt back up is if the intake cam was in the right spot.

^^^this is true. I do know that my car had a fixed cas sensor till i destroyed a few of them so i know the cam is in the right spot. still even has the plate for the magnet on the sensor.