Timing chain contacting oil pump housing
05-25-2015, 04:47 PM
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Timing chain contacting oil pump housing Got my new build in the car and started this weekend
the bad news is a can hear metal on metal contact which has to be timing chain contacting oil pump casing. It's a roller master double roller & Hubbard racing ported oil pump. I did use the supplied spacers but I was concerned on the minimal clearance on chain the back of pump casing. I had a friend look at it and he assured me the chain wouldn't flex forward when in motion so I was good. I also clearanced the cover and used clay to verify. Anyway ran it for a few minutes and shut her down! Im thinking about ditching the double roller and using the cloyes billet I originally purchased. Anyone else have this issue ??
the bad news is a can hear metal on metal contact which has to be timing chain contacting oil pump casing. It's a roller master double roller & Hubbard racing ported oil pump. I did use the supplied spacers but I was concerned on the minimal clearance on chain the back of pump casing. I had a friend look at it and he assured me the chain wouldn't flex forward when in motion so I was good. I also clearanced the cover and used clay to verify. Anyway ran it for a few minutes and shut her down! Im thinking about ditching the double roller and using the cloyes billet I originally purchased. Anyone else have this issue ?? 
05-25-2015, 05:09 PM
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Yeah well this suxs. Is it safe to assume running that short of time I will be alright swapping in the new chain and reusing the oil pump? Is the cloyes billet roller a good setup or should I go with a different chain?
Thanks!
Thanks!
05-27-2015, 09:30 AM
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05-29-2015, 07:38 PM
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Well got oil pump and timing chain exposed and no rubbing clearance issues to be found
I did notice that as a manually spun the crank the chain would go very tight and then loose as I roatated the crank? Seems odd to me so I swapped out to a cloyes single roller setup just to be sure also installed a trick flow dampner. The chain is now substantially tighter with this setup. I didn't run long enough to get all the air out of the cooling system so I'm hoping the noise wasn't just air in the water pump?
I did notice that as a manually spun the crank the chain would go very tight and then loose as I roatated the crank? Seems odd to me so I swapped out to a cloyes single roller setup just to be sure also installed a trick flow dampner. The chain is now substantially tighter with this setup. I didn't run long enough to get all the air out of the cooling system so I'm hoping the noise wasn't just air in the water pump?