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double roller timing chain interference w/ fuel pump

double roller timing chain interference w/ fuel pump

Old May 29th, 2018, 10:58 PM
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double roller timing chain interference w/ fuel pump

My cloyes double roller timing chain will not allow my fuel pump arm to make contact with the eccentric. Do I have to use a single roller chain?
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Old May 30th, 2018, 08:32 AM
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I'm pretty sure it should work with the double roller timing chain. Just to be sure your putting it in the right way. Do you have the fuel lines on the top or bottom of the fuel pump when your putting it in? Olds is opposite of Chevy so this is a mistake sometimes made. John
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Old May 30th, 2018, 08:36 AM
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Once installed it should look like this.


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Old June 2nd, 2018, 06:12 AM
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Any updates? I am looking at changing my timing chain and was looking at a double roller.

Last edited by 71cutlassdroptop; June 4th, 2018 at 02:54 AM.
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Old June 2nd, 2018, 07:00 AM
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Most every rebuilt Olds motor has a double roller chain with no interference with the fuel pump arm.
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Old June 2nd, 2018, 08:07 AM
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Cloyes Double Roller

I installed a Cloyes double roller set with no issues on my '68 400CID.



I thought I had a better picture of the installation showing the whole pump and both gears, but do not. Below you can see the installed set.


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Old June 2nd, 2018, 06:10 PM
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Thanks
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Old June 2nd, 2018, 07:35 PM
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Yes it was upside down. Looking at too many fords and chevys....
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