How much chain slop is too much?
#1300255
09/09/12 09:19 AM
09/09/12 09:19 AM
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Joined: Mar 2005
Posts: 466 Ohio
fiddlestix
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OP
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Posts: 466
Ohio
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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.
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Re: How much chain slop is too much?
[Re: fiddlestix]
#1300258
09/09/12 10:02 AM
09/09/12 10:02 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
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Romeo MI
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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
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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
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Joined: Oct 2005
Posts: 8,869 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,869
Ontario, Canada
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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.
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Re: How much chain slop is too much?
[Re: fiddlestix]
#1300264
09/09/12 03:36 PM
09/09/12 03:36 PM
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Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
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master
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Charlotte, North Carolina
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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]
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Re: How much chain slop is too much?
[Re: fiddlestix]
#1300265
09/09/12 04:19 PM
09/09/12 04:19 PM
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Joined: Oct 2005
Posts: 8,869 Ontario, Canada
Stanton
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Don't question me!
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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
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Re: How much chain slop is too much?
[Re: rowin4]
#1300267
09/09/12 07:02 PM
09/09/12 07:02 PM
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Joined: Oct 2005
Posts: 8,869 Ontario, Canada
Stanton
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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.
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Re: How much chain slop is too much?
[Re: Stanton]
#1300268
09/09/12 07:07 PM
09/09/12 07:07 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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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....
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Re: How much chain slop is too much?
[Re: fiddlestix]
#1300274
09/10/12 03:04 PM
09/10/12 03:04 PM
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Joined: Oct 2005
Posts: 8,869 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
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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.
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Re: How much chain slop is too much?
[Re: fiddlestix]
#1300275
09/10/12 04:44 PM
09/10/12 04:44 PM
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Joined: Apr 2005
Posts: 1,505 TN
SCATPACK 1
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pro stock
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Tim I had the same problem with my 40 block. I went with a -5 undersized chain and no more slop. Chain is tight and zero timing wiggle movement now. Have not had a problem with it in over 5 years now.
Old Geezer Racing
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Re: How much chain slop is too much?
[Re: Stanton]
#1300276
09/10/12 04:52 PM
09/10/12 04:52 PM
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Joined: Apr 2005
Posts: 1,505 TN
SCATPACK 1
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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.
NOPE, not true! I had too much slack in my brand new cloyes roller chain set. I bought a -5 chain (undersized) and there is no more slack. I used the same new gearset I already had, but I replaced/swapped 1 new chain for another new chain. I believe the -5 chain may have had oversized rollers. That is the only thing I can think of that would take up the slack difference.
Old Geezer Racing
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Re: How much chain slop is too much?
[Re: fiddlestix]
#1300279
09/21/12 09:21 PM
09/21/12 09:21 PM
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Joined: Mar 2005
Posts: 466 Ohio
fiddlestix
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Well, I finally got the timing chain all sorted out. I have been dealing with Todd at Marsh performance in N.C. His supplier told him he could get rollmaster in several different sizes. Well.... they came back after I told him I wanted a .004" oversize that they could only get standard sets. He then ordered me a .005" Cloyes set (to be drop shipped)and said I could return it if it didn't fit(for a standard Rollmaster). When it arrived last Friday it was a standard set. So, I called him right away and he got the .005" set reordered. It came in Thursday and fit great!!!!! He is sending me a return shipper for the standard set they sent me. I would say he has gone above and beyond for a $125 part. Which by the way is an excellent price. I would highly recommend him to anyone. Thanks Todd
Last edited by fiddlestix; 09/21/12 09:31 PM.
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