HSV double-row timing chain vs timing gears

[savage1987]

Can anybody give me a good reason or 2 for replacing my current timing gears with the HSV double-row chain? I've heard the gears aren't such a great idea on a daily driver.. but I don't know too much about them. I bought the car with timing gears freshly installed?

EDIT: "I bought the car with timing gears freshly installed?" - lol "I'm Ron Burgundy???"

cheers
Sam

 

[V85000i]

they sound sweet but i've heard timing gears can damage bearings through harmonics, i got them on my HQ 253, but that's a weekend thrasher not a daily driver.

 

[383 hatch]

HSV double row chain????? When did the HSV's come out with a double row chain?? When you say timing gears, do you mean straight cut timing gears or just freshly replaced normal timing gears??

 

[greenfoam]

Pretty sure the Group A runs a double row chain, because they used to break at Bathurst in the old Group A days and I'm sure they would have fixed it with the Walky or earlier. I know those two cars were HSV's greatest effort ever and that's not a typical HSV but still

 

[pandaman]

Pretty sure the Group A runs a double row chain, because they used to break at Bathurst in the old Group A days and I'm sure they would have fixed it with the Walky or earlier. I know those two cars were HSV's greatest effort ever and that's not a typical HSV but still

I'm pretty sure all 5 litres from VN onward got double row chains. Plenty of reports out there of people pulling down stock 5L's and finding double row chains, including me!

 

[adam69]

My 91 VQ has double row which was fitted recently and the old ones were double too.

 

[Boonz]

mine was double row out of a 1990 model, replaced it with a rollmaster double row set... about to replace it again with the crow cams adjustable double row unit

 

[savage1987]

i've heard timing gears can damage bearings through harmonics

I've heard that too, I have a feeling I read it in a thread of yours...

HSV double row chain????? When did the HSV's come out with a double row chain?? When you say timing gears, do you mean straight cut timing gears or just freshly replaced normal timing gears??

Straight cut. The chattery, whiny kind. I got the HSV info from this website: Browser Warning - not sure what that browser warning is all about but the site works fine...
"What kind of mechanical changes came with the injected 5.0-litre V8s?
.....as mentioned, HSVs get a double row timing chain......"

I'm pretty sure all 5 litres from VN onward got double row chains. Plenty of reports out there of people pulling down stock 5L's and finding double row chains, including me!

Maybe HSV enhanced motors?? Just a thought....

mine was double row out of a 1990 model, replaced it with a rollmaster double row set... about to replace it again with the crow cams adjustable double row unit

Why? were the other ones crap? Did they stretch?

 

[Boonz]

nah cos i wanna advance the cam timing accurately:thumbsup: and easily lol

 

[Reaper]

Pretty sure the Group A runs a double row chain, because they used to break at Bathurst in the old Group A days and I'm sure they would have fixed it with the Walky or earlier. I know those two cars were HSV's greatest effort ever and that's not a typical HSV but still

True. Ever since Brock (and many others) died at Bathurst in 1985 (?) thru timing chain failure GM homologated double row chains on all the GPA cars. I'd be suprised if HSV didn't run them in all their engines.

Reaper