SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: 79 ranger jet on March 30, 2015, 07:07:57 PM
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Come to find out bent a push rod and had water in cylinders put new one in cleaned out cylinders to put it around for Saturday. I get home make a few calls and to find out someone told me my headers allowed the cylinders to suck water in a I do run them wet and they are on a valve any other opinions on this also I now have no compression in number 1 cylinder and also if I was to run dry headers won't they get to hot and burn up my plug wires
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Come to find out bent a push rod and had water in cylinders put new one in cleaned out cylinders to put it around for Saturday. I get home make a few calls and to find out someone told me my headers allowed the cylinders to suck water in a I do run them wet and they are on a valve any other opinions on this also I now have no compression in number 1 cylinder and also if I was to run dry headers won't they get to hot and burn up my plug wires
There is so much going on here. I going to hit you one at a time.
Come to find out bent a push rod and had water in cylinders put new one in cleaned out cylinders to put it around for Saturday.
That sucks...
I get home make a few calls and to find out someone told me my headers allowed the cylinders to suck water in
Maybe... maybe not. It could be numerous things.
I do run them wet and they are on a valve any other opinions on this
Lots, but in all honesty, the Bassett valve is either a pass fail thing. Not sure why so many have issues with them.
I now have no compression in number 1 cylinder and also if I was to run dry headers won't they get to hot and burn up my plug wires
They don't burn the wires on a Corvette. :sly:
But they sure do get silly hot... I am not convinced about the reversion issue...
GT
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Yeah this whole motor is fresh brand new cam kit lifters springs used stock push rods and stock rockers
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I will be pulling motor down to see what's going on here
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Yeah this whole motor is fresh brand new cam kit lifters springs used stock push rods and stock rockers
Sounds like a potential for coil bind or guide bind to me.. What camshaft?
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Comp
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570 lift I believe
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554 intake 557 exhaust
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554 intake 557 exhaust
Roller or flat?
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Flat
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is there water coming out of the header at idle or are thay dry
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they are dry
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Ok so I take off all the rockers and o now have compression in the cylinder
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Sounds like u had a valve to tight on numero uno..
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Sounds like u had a valve to tight on numero uno..
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So... valve kiss piston or water ingestion (reversion?)
or maybe a lobe going flat? (fresh motor / no compression on # 1)
Just a w.a.g.
Dan'l
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If it had a bent valve or a lobe goin flat it wouldnt all of a sudden have compression in the cylinder when the rockers come off
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Sounds like you had too much block pressure...
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What kind of engine is this? Did i miss it somewhere??
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so... I've never tried running a compression check with the rockers off, However, I've done a 'bleed down test', no gauges, just an air compressor filling the cylinder, listening for escaping air.
what does a compression check tell if the rockers are off?
School me.
Dan'l
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Well if it had said bent valve from piston kiss seems to me. Cylinder in question would still have shittola for compression with rockers removed.. if a valve had been way to tight with rockers on it would have shittola for compression as well... no expert by any means.. just my 2 pennys.
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I already here the intake valve not opening part commin... but he never specified that one was dead..
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This was the 460 and it was the very first rocker I could tell right away when I took valve cover off that the spring look compressed further down then all rest through full rotation
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Now my plan of attack is let me know if this the right direction I'm going go to adjustable roller rocker set up and have the pushrods sized to fit
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Is that pushrod the same length as the rest of them?!
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Well I'm not 100% that it was but I do believe so just stock 460 pushrods