Cam Project Final Write-Up
Cruiser
Joined: Jul 2008
Posts: 248
Likes: 6
From: Flowery Branch,Ga.
here's one for ya, something to make you say hmmm...
so here's my question you have a adjustable pushrod, you have the bottom half , you have the top half which is thicker, now if you turn the bottom 2 1/2 rotations then you if you turn the top half 2 1/2 rotations are the thread counts going to be different ?
the reason I ask this question is 1st im from tennessee , lol...
the 2nd is in my opinion the top half is bigger than the lower half, soo wouldnt the thread count be different because of the longer rotation ?
so here's my question you have a adjustable pushrod, you have the bottom half , you have the top half which is thicker, now if you turn the bottom 2 1/2 rotations then you if you turn the top half 2 1/2 rotations are the thread counts going to be different ?
the reason I ask this question is 1st im from tennessee , lol...
the 2nd is in my opinion the top half is bigger than the lower half, soo wouldnt the thread count be different because of the longer rotation ?
Road Master
Joined: Dec 2008
Posts: 872
Likes: 20
From: Niagara Falls Canada
push rods
I just picked up my 103 kit with 255 cams today. will start tearing down the motor in 2 days. I am wondering about the push rods. If I use my original push rods will they be the exact correct length to preload the lifters. And if they are the correct length shouldn't I be able to measure them and just set the adjustables to the same length to get the proper length preload on the lifter. from posts I have read and instruction sheets it looks like I pre-pump the lifter up. get cylinder on compression stroke which is supposed to get both lifters for that cylinder on lowest part of cam lobe. if I use adjustable rods start extending them until they just start to load up and add 2-1/2 turns for se rods. after lifter bleeds down turn motor over using back wheel ,tranny in gear and find out if valve has clearance. I have seen other write ups, instructions saying to put modelling clay on pistion and check compression of clay and I recall dimension of .080 minimum of clearance in clay compressed area.
I dont see any new top end roller bearings for piston pins in my kit, these piston rods do have needle bearings in them dont they, I got 2 new pins and clips but no bearings. and I don't see any new cam bearings in kit guess I have to buy them . for all the guys that have changed cams or 103 kits, from my push rod write up , does it sound like I have a handle on lifter , rod set up.
I dont see any new top end roller bearings for piston pins in my kit, these piston rods do have needle bearings in them dont they, I got 2 new pins and clips but no bearings. and I don't see any new cam bearings in kit guess I have to buy them . for all the guys that have changed cams or 103 kits, from my push rod write up , does it sound like I have a handle on lifter , rod set up.
Ultimate HDF Member
Joined: Dec 2006
Posts: 8,294
Likes: 33
From: Po-Dunk Looziana
I just picked up my 103 kit with 255 cams today. will start tearing down the motor in 2 days. I am wondering about the push rods. If I use my original push rods will they be the exact correct length to preload the lifters. And if they are the correct length shouldn't I be able to measure them and just set the adjustables to the same length to get the proper length preload on the lifter. from posts I have read and instruction sheets it looks like I pre-pump the lifter up. get cylinder on compression stroke which is supposed to get both lifters for that cylinder on lowest part of cam lobe. if I use adjustable rods start extending them until they just start to load up and add 2-1/2 turns for se rods. after lifter bleeds down turn motor over using back wheel ,tranny in gear and find out if valve has clearance. I have seen other write ups, instructions saying to put modelling clay on pistion and check compression of clay and I recall dimension of .080 minimum of clearance in clay compressed area.
I dont see any new top end roller bearings for piston pins in my kit, these piston rods do have needle bearings in them dont they, I got 2 new pins and clips but no bearings. and I don't see any new cam bearings in kit guess I have to buy them . for all the guys that have changed cams or 103 kits, from my push rod write up , does it sound like I have a handle on lifter , rod set up.
I dont see any new top end roller bearings for piston pins in my kit, these piston rods do have needle bearings in them dont they, I got 2 new pins and clips but no bearings. and I don't see any new cam bearings in kit guess I have to buy them . for all the guys that have changed cams or 103 kits, from my push rod write up , does it sound like I have a handle on lifter , rod set up.
Road Master
Joined: Jun 2007
Posts: 883
Likes: 2
From: Clearwater, FL
here's one for ya, something to make you say hmmm...
so here's my question you have a adjustable pushrod, you have the bottom half , you have the top half which is thicker, now if you turn the bottom 2 1/2 rotations then you if you turn the top half 2 1/2 rotations are the thread counts going to be different ?
the reason I ask this question is 1st im from tennessee , lol...
the 2nd is in my opinion the top half is bigger than the lower half, soo wouldnt the thread count be different because of the longer rotation ?
so here's my question you have a adjustable pushrod, you have the bottom half , you have the top half which is thicker, now if you turn the bottom 2 1/2 rotations then you if you turn the top half 2 1/2 rotations are the thread counts going to be different ?
the reason I ask this question is 1st im from tennessee , lol...
the 2nd is in my opinion the top half is bigger than the lower half, soo wouldnt the thread count be different because of the longer rotation ?
This made me think about the old question - does a record playing at 33-1/3 rpm turn faster in the middle than it does at the outer edge?
Road Master
Joined: Jun 2007
Posts: 883
Likes: 2
From: Clearwater, FL
Too windy to haul feathers. Might as well go fishing.
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Road Master
Joined: Dec 2008
Posts: 872
Likes: 20
From: Niagara Falls Canada
cam bearings
talk about fast post responses, I can get the inner bearings from a bearing supply company , sounds like the b168 are the better way to go. I can probably get them for free since I used to be a maintenance foreman for an automotive frame builder and spent hundreds of thousands a year with my bearing supplier, he will just call them samples. from pictures I have looked at the outers look like pressed in brass bearings or are there needle replacements for these.