crank bearings.
Thread Starter
Honda-Tech Member
Joined: Mar 2004
Posts: 882
Likes: 0
From: fort lewis, washington, USA
crank bearings.
why are there crank bearings and not cam bearings... i know it is kind of a dumb question but i was just curious as to why. if you must be an *** and flame then go ahead 
, but to those of you that give an answer thanks.
, but to those of you that give an answer thanks.
Honda-Tech Member
Joined: Mar 2003
Posts: 3,333
Likes: 0
From: Hudson, NH, 03051
Re: crank bearings. (limpy)
Ok...Ok
First the camshafts turn at half the speed of the crank.The only load is the valve spring pressure and the and the inertia of the valves,retainers,springs and rockers.This is nothing compared to the load on the crank and rods.The aluminum is a good bearing surface as long as the oil flow is adequate.The load is only in one direction unlike the crankshaft.There are very light thrust loads unlike the crank.
Those are some of the major reasons.
Glenn
First the camshafts turn at half the speed of the crank.The only load is the valve spring pressure and the and the inertia of the valves,retainers,springs and rockers.This is nothing compared to the load on the crank and rods.The aluminum is a good bearing surface as long as the oil flow is adequate.The load is only in one direction unlike the crankshaft.There are very light thrust loads unlike the crank.
Those are some of the major reasons.
Glenn
Thread Starter
Honda-Tech Member
Joined: Mar 2004
Posts: 882
Likes: 0
From: fort lewis, washington, USA
Re: crank bearings. (NJIN BUILDR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NJIN BUILDR »</TD></TR><TR><TD CLASS="quote">Ok...Ok
First the camshafts turn at half the speed of the crank.The only load is the valve spring pressure and the and the inertia of the valves,retainers,springs and rockers.This is nothing compared to the load on the crank and rods.The aluminum is a good bearing surface as long as the oil flow is adequate.The load is only in one direction unlike the crankshaft.There are very light thrust loads unlike the crank.
Those are some of the major reasons.
Glenn</TD></TR></TABLE>
thank you that is exactally what i was looking for, so when changing out the cams there is some scaring/scratches on the cam journals, does that need to be machined? Is there a way to fix the scaring/scratches?
First the camshafts turn at half the speed of the crank.The only load is the valve spring pressure and the and the inertia of the valves,retainers,springs and rockers.This is nothing compared to the load on the crank and rods.The aluminum is a good bearing surface as long as the oil flow is adequate.The load is only in one direction unlike the crankshaft.There are very light thrust loads unlike the crank.
Those are some of the major reasons.
Glenn</TD></TR></TABLE>
thank you that is exactally what i was looking for, so when changing out the cams there is some scaring/scratches on the cam journals, does that need to be machined? Is there a way to fix the scaring/scratches?
Honda-Tech Member
Joined: Mar 2003
Posts: 3,333
Likes: 0
From: Hudson, NH, 03051
Re: crank bearings. (limpy)
The cam bores can be align honed just like the main line.Unless its really severe I wouldn't do anything about it.As long as the cam turns freely your all set.
Glenn
Glenn
Thread Starter
Honda-Tech Member
Joined: Mar 2004
Posts: 882
Likes: 0
From: fort lewis, washington, USA
Re: crank bearings. (NJIN BUILDR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NJIN BUILDR »</TD></TR><TR><TD CLASS="quote">The cam bores can be align honed just like the main line.Unless its really severe I wouldn't do anything about it.As long as the cam turns freely your all set.
Glenn</TD></TR></TABLE>
thanks man... you kick ***
Glenn</TD></TR></TABLE>
thanks man... you kick ***
Thread
Thread Starter
Forum
Replies
Last Post