Timing Chain / Harmonic balancer
Thread Starter
Racer
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
Timing Chain / Harmonic balancer
Hi,
since it will be winter for some more time and I can´t drive the Vette anyway, I think about doing the timing chain and the harmonic balancer.
None of them seem to be an acute problem, but with 85k miles and 23 years I feel better to get them done.
Maybe it will cure the ultra light vibration at idle....
I have a Haynes manual, not yet factory manual but I think I can do the job with some prior hints from you!
My first question: Single or Double Roller timing set?
As for double roller, will this fit?
CLOYES Part # 91145 Street True® Roller Set; High Performance (rockauto, around 70 US$)
Any hp losses from running a double roller?
Anything needs to be grinded/modifies to fit?
As for the harmonic balancer I´d use a ACDELCO Part # 12551537 , seems stock replacement.
The engine runs strong and excellent, I did a complete top end overhaul when I did my headgaskets so I do not want to bent valves or anything....please let me know any precautions.....
Best regards
Benjamin
since it will be winter for some more time and I can´t drive the Vette anyway, I think about doing the timing chain and the harmonic balancer.
None of them seem to be an acute problem, but with 85k miles and 23 years I feel better to get them done.
Maybe it will cure the ultra light vibration at idle....
I have a Haynes manual, not yet factory manual but I think I can do the job with some prior hints from you!
My first question: Single or Double Roller timing set?
As for double roller, will this fit?
CLOYES Part # 91145 Street True® Roller Set; High Performance (rockauto, around 70 US$)
Any hp losses from running a double roller?
Anything needs to be grinded/modifies to fit?
As for the harmonic balancer I´d use a ACDELCO Part # 12551537 , seems stock replacement.
The engine runs strong and excellent, I did a complete top end overhaul when I did my headgaskets so I do not want to bent valves or anything....please let me know any precautions.....
Best regards
Benjamin
Thread Starter
Racer
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
In case the single roller would be a better choice , will this be ok?
CLOYES Part # C3092 More Information About this Part Heavy Duty Timing Set; Cam, Crank, Chain
Incl. Cam Sprocket; Heavy Duty Timing Set; Crank Sprocket; W/0.5 In. Pitch Single Roller Chain
CLOYES Part # C3092 More Information About this Part Heavy Duty Timing Set; Cam, Crank, Chain
Incl. Cam Sprocket; Heavy Duty Timing Set; Crank Sprocket; W/0.5 In. Pitch Single Roller Chain
Suckin' gas, haulin' ass.
Joined: Apr 2010
Posts: 1,100
Likes: 8
From: Newport News Virginia
Hi,
since it will be winter for some more time and I can´t drive the Vette anyway, I think about doing the timing chain and the harmonic balancer.
None of them seem to be an acute problem, but with 85k miles and 23 years I feel better to get them done.
Maybe it will cure the ultra light vibration at idle....
I have a Haynes manual, not yet factory manual but I think I can do the job with some prior hints from you!
My first question: Single or Double Roller timing set?
As for double roller, will this fit?
CLOYES Part # 91145 Street True® Roller Set; High Performance (rockauto, around 70 US$)
Any hp losses from running a double roller?
Anything needs to be grinded/modifies to fit?
As for the harmonic balancer I´d use a ACDELCO Part # 12551537 , seems stock replacement.
The engine runs strong and excellent, I did a complete top end overhaul when I did my headgaskets so I do not want to bent valves or anything....please let me know any precautions.....
Best regards
Benjamin
since it will be winter for some more time and I can´t drive the Vette anyway, I think about doing the timing chain and the harmonic balancer.
None of them seem to be an acute problem, but with 85k miles and 23 years I feel better to get them done.
Maybe it will cure the ultra light vibration at idle....
I have a Haynes manual, not yet factory manual but I think I can do the job with some prior hints from you!
My first question: Single or Double Roller timing set?
As for double roller, will this fit?
CLOYES Part # 91145 Street True® Roller Set; High Performance (rockauto, around 70 US$)
Any hp losses from running a double roller?
Anything needs to be grinded/modifies to fit?
As for the harmonic balancer I´d use a ACDELCO Part # 12551537 , seems stock replacement.
The engine runs strong and excellent, I did a complete top end overhaul when I did my headgaskets so I do not want to bent valves or anything....please let me know any precautions.....
Best regards
Benjamin
Thread Starter
Racer
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
Hm...ok, that sounds doable....
One more thing, most good Timing Sets have several keyways which retard or advance timing by + - 4 degrees.
Advancing should bring a little more low end power, but are there any drawbacks, such as idle quality or emission problems?
I mostly drive in the lower rpms, therefore maybe worth doing it while I´m in there?
One more thing, most good Timing Sets have several keyways which retard or advance timing by + - 4 degrees.
Advancing should bring a little more low end power, but are there any drawbacks, such as idle quality or emission problems?
I mostly drive in the lower rpms, therefore maybe worth doing it while I´m in there?
