How much chain slop is too much?
#1300255
09/09/12 09:19 AM
09/09/12 09:19 AM
|
Joined: Mar 2005
Posts: 466 Ohio
fiddlestix
OP
mopar
|
OP
mopar
Joined: Mar 2005
Posts: 466
Ohio
|
I had my block line honed. I checked the crank to cam centerline @5.1485" (.0035 less than stock). I have a new Cloyes timing set I put on it and have aprox. .160" deflection in the chain. Is this too much? Should I go with a -.005 chain or will it be too tight? Any suggestions? Also what is your favorite brand you can buy with a torrington thrust bearing(Cloyes, rollmaster, comp)? Thanks guys!!
Last edited by fiddlestix; 09/09/12 09:39 AM.
|
|
|
Re: How much chain slop is too much?
[Re: fiddlestix]
#1300258
09/09/12 10:02 AM
09/09/12 10:02 AM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
I dont know if they offer a chain tensioner for the BB but they do for the SB... I believe that if you go to the short chain it would be too short... JMO... I was surprised at how much drag there was when using the chain tensioner ... I was putting my engine together a couple of days ago and with just the crank in the engine I couldnt really measure the torque to turn the crank(didnt want to get my inch pound torque wrench out) and I put the cam in and could spin it with my fingers... as soon as I pulled the pin on the chain tensioner it went up to about 8# to turn the crank..... I thought that was ALOT
|
|
|
Re: How much chain slop is too much?
[Re: MR_P_BODY]
#1300260
09/09/12 10:16 AM
09/09/12 10:16 AM
|
Joined: Oct 2005
Posts: 8,873 Ontario, Canada
Stanton
Don't question me!
|
Don't question me!
Joined: Oct 2005
Posts: 8,873
Ontario, Canada
|
No tensioner for big blocks that I'm aware of. Go to the Rollmaster website, they have a neat gauge that converts chain slop into an oversize measurement. http://www.romac.com.au/Tunnel_Bores.htmlYou just may be able to use a .005 over set. Chains will stretch with use so to answer your question, its only too tight if you can't get it on.
|
|
|
Re: How much chain slop is too much?
[Re: fiddlestix]
#1300264
09/09/12 03:36 PM
09/09/12 03:36 PM
|
Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
master
|
master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
|
440 Source makes a .005 over chain. I bought their standard chain kit and an extra .005 over chain for my block that was fitted with aluminum caps and line bored. Standard chain still fit well. Couldn't get the .005 chain on. Nice looking kit, too.
[image][/image]
|
|
|
Re: How much chain slop is too much?
[Re: fiddlestix]
#1300265
09/09/12 04:19 PM
09/09/12 04:19 PM
|
Joined: Oct 2005
Posts: 8,873 Ontario, Canada
Stanton
Don't question me!
|
Don't question me!
Joined: Oct 2005
Posts: 8,873
Ontario, Canada
|
You should be able to use any timing set (new) to determine the slop since stock is stock regardless of who makes it (waiting for the arguments here !!) Oversize chains ?!?!?! All chains are the same - its the top sprocket that's oversize. Which allows you to replace worn chains with any "off the shelf" double roller chain. A top quality and inexpensive oversize set is available from JP Performance out of Australia. Available through any Motorstate distributor. p/n jpp5606t-lb5 http://www.motorstate.com/site/?ct=131#goto74170
|
|
|
Re: How much chain slop is too much?
[Re: rowin4]
#1300267
09/09/12 07:02 PM
09/09/12 07:02 PM
|
Joined: Oct 2005
Posts: 8,873 Ontario, Canada
Stanton
Don't question me!
|
Don't question me!
Joined: Oct 2005
Posts: 8,873
Ontario, Canada
|
Quote:
I wonder if the statement about the oversize top sprocket is correct? seems that the lower sprocket is 1/2 the size of the top sprocket. If the top sprocket was larger then 2x diameter after a few revolutions the timing would be off. yes?
No, it has nothing to do with the sizes of the sprockets, it has to do with the number of teeth. As long as the top sprocket has twice as many teeth as the bottom sprocket and the chain pitch is close enough to fit, the cam will turn at half the speed of the the crank.
They can add to the diameter of the sprocket and the pitch of the teeth only changes ever so slightly. I imagine the top sprocket is also easier to hold to machine.
|
|
|
Re: How much chain slop is too much?
[Re: Stanton]
#1300268
09/09/12 07:07 PM
09/09/12 07:07 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
Quote:
I wonder if the statement about the oversize top sprocket is correct? seems that the lower sprocket is 1/2 the size of the top sprocket. If the top sprocket was larger then 2x diameter after a few revolutions the timing would be off. yes?
No, it has nothing to do with the sizes of the sprockets, it has to do with the number of teeth. As long as the top sprocket has twice as many teeth as the bottom sprocket and the chain pitch is close enough to fit, the cam will turn at half the speed of the the crank.
They can add to the diameter of the sprocket and the pitch of the teeth only changes ever so slightly. I imagine the top sprocket is also easier to hold to machine.
According to their web site its a matched set and have to be used together....
|
|
|
Re: How much chain slop is too much?
[Re: fiddlestix]
#1300274
09/10/12 03:04 PM
09/10/12 03:04 PM
|
Joined: Oct 2005
Posts: 8,873 Ontario, Canada
Stanton
Don't question me!
|
Don't question me!
Joined: Oct 2005
Posts: 8,873
Ontario, Canada
|
Quote:
but I'm checking into ordering a Rollmaster +.003 set. Am I wasting my time and money?
Good luck there. Not many places stock a variety of the undersize sets and the delivery time is ridiculous if they order - made in Australia and shipped by boat!
Also, when I was looking for mine I was informed that they were only producing the .005 and .010 sets.
|
|
|
|
|