Ok, sounds goodYes, we can adjust the measurements after the heads are done, but it would be good to know where we are starting.
Ok, sounds goodYes, we can adjust the measurements after the heads are done, but it would be good to know where we are starting.
I have this one, I will thread the center of the bar to accept this toolHere's the piston TDC stop tool that screws into a spark plug hole:
View attachment 1714728769
http://www.summitracing.com/parts/sum-900189
They carry a few different varieties for both of them:
http://www.summitracing.com/search?...tOrder=Ascending&keyword=piston top dead stop
I decided to go with the J.P Rollermaster set cause of the multiple keyways. Ive also read that its a better all around set. No Napa in the State had all of the pieces so freight charges added up were going to bring me not far off from the cost of the J.P set.Oh, yeah.
You can get a double roller timing chain and gear set from NAPA for the slant 6, but you have to order each gear and the chain separately. The double row timing chain is NAPA part 9168, used from 1962 to 1975 on the slant six. The sprockets are part S338 and S339.
I decided to go with the J.P Rollermaster set cause of the multiple keyways. Ive also read that its a better all around set. No Napa in the State had all of the pieces so freight charges added up were going to bring me not far off from the cost of the J.P set.
Thanks for the heads up on this, I have read about the tight fit, Im hoping to have the same luck you had with yours.remember on the JP set its not uncommon to have to hone the crank gear to match your crank snout! DO NOT use heat to install it, should be a snug fit but go on with light taps from a dead blow hammer. You will need a mic (not dial calipers) and measure the snout, give that spec to the machine shop and they will hone the gear, that said mine was dead on but i have seen them have to be cut off...
Part # CS 5300 Double roller.That's good. as long as you use a double roller or better. :thumleft:
Not that stock piece of junk.... :finga:
I plan to CC my head tomm, maybe a couple just to get the process down. This is the already re-built head that I am guessing I am going to install the oversized valves in ect. I know it has already been milled some.That's good. as long as you use a double roller or better. :thumleft:
Not that stock piece of junk.... :finga:
I have not disassembled it at all as of yet, I know now at least that the valves are sealing. ( holding water as seen in the pict. ) Would you recommend cleaning every detail of carbon out of the combustion chamber before starting the process.
Ok Im on it tomm. ThanksYes. clean off all of the carbon deposits. I use a 3" or 4" wire wheel on a drill. It will clean up the carbon deposits and any gasket material off of the surface. Also clean off the spark plug if you are going with used ones to check the heads (or use a spare new one).
You don't want the carbon to affect your readings. Bare clean metal is best here.
Readings are as follows, did them all twice cause it looked like the head surface is un-even front to back, do not know if this is typical or if I should be looking at one of my other heads.
Cyl #1 54
Cyl #2 57
Cyl # 3 57/58ish
Cyl # 4 58
Cyl # 5 58/59ish
Cyl # 6 58/59ish
I think I am going to check another head if I can get some valves to seal without a huge ordeal.
I did another head, this is the head from # 2 truck ( parts truck ) and was the one with the burned out valve ( hole in it )
I thought I had disassembled it but I was wrong, I removed the one bad valve, cleaned up the seat ( looked pretty good already ) and cleaned the backside of a spare valve. Put some grease on it and put it in place hoping for a seal.
Readings are as follows.
Cyl #1 59
Cyl #2 60
Cyl # 3 60
Cyl # 4 60
Cyl # 5 60
Cyl # 6 60
More consistent numbers but does it really matter if I am going to have machine work done anyway?
What would be the deciding factor of which head to use.
I may do another head but it is in pieces so .....
What would be the deciding factor of which head to use.
There must be a margin for error, I am not sure what that is but this is still not an exact science, there is a very marginal amount of grease which is going to overflow into the chamber ( very very slight if you are carefull but nonetheless still there) there are also no two syringes that are going to read identical never mind getting in between a halfway point like I did with this one upon emptying. ( between 44 and 45 still left in the cylinder but I rounded down cause thats where I felt more comfortable.
When the machinest did the head he complained about all the material he had to remove just to get it flat. He made it seem as if he took a bunch off and I was a pain in the butt to bring him such a head.
Dosent look like he removed all that much.
I am guessing ( and only a guess ) that when the head was machined the last time it was not set-up properly in the machine that removed the material. I am guessing this is just another sign of sloppy work.I would suspect that this one is not "flat". the head to block surface is at a slight angle.
I would take the average of these readings for this head, which adds up to 57 cc
I may be wrong when talking machine ( ing ) talk but these two heads are not far from each other...in other words prob. no great advantage to either of them as far as having any kind of gain to save a few bucks cause alot of material has already been removed and paying to have material removed is where I am nearing at this point.This one averages out to 59.8333, so we'll call it 60 cc per cylinder.