Thread: need help, pisron hits valve
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09-14-2009 09:06 PM #16
Last edited by pat mccarthy; 09-14-2009 at 09:31 PM.
Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
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09-14-2009 10:26 PM #17
when i did my farm boy rebuild on my cadillac engine i put the head on and put a piston at tdc and carefully let the valve down on the piston and actually measured the distance of valve drop without a gasket ugly and fast, but it worked to see where i was in relation to valve clearance with calculating lift and rocker arm ratio. I wasnt anywhere close to a clearance problem but it gave me an idea of where i was at.
I agree Pat he has to start somewhere cause it wont work the way it is now. I deferr any thoughts to you cause any advise you have ever given has been spot on.
If i ever want to build my 454 i am going to ask you for shure for some good advise
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09-15-2009 08:43 AM #18
Stupid question but hard to tell from pics: is piston in backwards?Paint don't make it no faster
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09-15-2009 09:51 AM #19
well after reading thru here and looking at the pics I have come up with the answer-----first it does look like the piston is out of the hole some and it could possibly be a 427 piston instead of a 454 piston--the putty is NOT marked from valve contact----I think he cranked down too far on his adjuster nuts and the retainer hit the guide/seal, never touching the piston
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09-15-2009 05:19 PM #20
water ports for heads cooling are in back of the mark 4 block and open so your looking at the front of the block os that number one hole and is right ? from what i can see ???????????????????? mark 5/6 are open front and back but the mark 5 cnc bowtie is plug in front to make the water go thru the back of blockLast edited by pat mccarthy; 09-15-2009 at 05:25 PM. Reason: i added some stuffffffffffffffffffffffffffffffffffffff
Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance