verbs

I've heard a few stories of aftermarket timing chains breaking due to aftermarket pullies.....

I have an ASP pulley set and am wondering what risk I run of breaking a timing chain, and if there are any aftermarket timing chains out there that have had problems dealing with the different harmonics, and which timing chains seem to have no problems.

SSINFUL

Well, I've broken 2 in 2 years. Had the Whisper pulley (no balancer), now have ATI.

Some fellers like to say it's bouncing offa the rev limiter that's causing me grief, but I think it's at least a combo...

verbs

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SSINFUL:
<strong>Well, I've broken 2 in 2 years. Had the Whisper pulley (no balancer), now have ATI.

Some fellers like to say it's bouncing offa the rev limiter that's causing me grief, but I think it's at least a combo...</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Just curiously, which timing chains were you running when they both broke???

Have you found one yet that has worked better for you?

99 Black Bird T/A

iTrader: (4)

Any new idea on this?

verbs

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 99 Black Bird T/A:
<strong>Any new idea on this?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">LOL....I'm running ASP pullies and a JWIS timing chain....I'll keep you updated!

MelloYellow

I'd add the new GM timing chain damper if you are in there. Help you sleep at night.

Damian

iTrader: (89)

My first ASP pulley I bought used, and it was out of balance. The pulley itself was damaged, and I didn't notice the slight wobble it has until after 2 yrs of running it <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> I had no chain breaks. Since then I have put a new ASP pulley on, and have no worries seeing that it's brand new and balanced.

JOsh

FASST

I remember talking to Strope about this last year when I did my H/C setup. They had a couple dynos on cars running the ASP pully. They all showed a hp/tq dip at ~5700rpm due to a harmonic imbalance. The only pully they recommended was the ATI because it was a true damping mechanism. Take a look at your dyno pulls from Xtreme and see if you see this dip. If you do, I'd recommend swapping that bad-boy out.

verbs

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by FASST:
<strong>I remember talking to Strope about this last year when I did my H/C setup. They had a couple dynos on cars running the ASP pully. They all showed a hp/tq dip at ~5700rpm due to a harmonic imbalance. The only pully they recommended was the ATI because it was a true damping mechanism. Take a look at your dyno pulls from Xtreme and see if you see this dip. If you do, I'd recommend swapping that bad-boy out.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">No dip at 5700rpms, however the line on the graph does become a little more jagged from 5700rpms on up.....the line seemed to be a bit more straight before that. Hmmm...maybe the ATI is something I should look into.

MelloYellow

Funny. I just ordered an Alum ATI Super Damper here. Was hoping it would dampen things better and put less wear on my crank bearings since I'm going with a V2-SQ Vortech.

It's 2.5 lbs lighter than stock for whatever that's worth. Might rev a bit faster?

Slowhawk

iTrader: (12)

Just installed ASP pulley and no dips on my dyno graph <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />