msupra1 Posted April 10, 2015 Share Posted April 10, 2015 (edited) In the middle of my dyno session my timing belt got a lot of slack and was making noise, so after further inspection we found that my stock crank pulley cracked and the tensioner went out as well. I replaced my OEM crank pulley (which cracked on me 2 years ago on BPU) with another stock USED crank pulley. If I replace it with a NEW oem crank pulley that should be fine for bigger power? It went out on me at 630bhp but the car will be making around 680bhp once tuning is done. Just want to make sure, I can get the OEM one quickly where as anything else I'd have to order in and I'm tight on time but want to make sure I'm setup right. Edited April 10, 2015 by msupra1 (see edit history) Quote Link to comment Share on other sites More sharing options...
Dim Sum Posted April 10, 2015 Share Posted April 10, 2015 If you are looking to get a OEM crank pulley try TCB. Im pretty sure you can run that amount of power on OEM crank pulley but someone will comfirm this Quote Link to comment Share on other sites More sharing options...
Style Posted April 10, 2015 Share Posted April 10, 2015 Seems as though people go for a Titan crank pulley I think when going for bigger single figures Quote Link to comment Share on other sites More sharing options...
msupra1 Posted April 10, 2015 Author Share Posted April 10, 2015 Yeah Titan or ATI pulley are the options but I'm kind of a time crunch here. If these are recommended and stock is no good for nearly 700bhp then I'll have rush ship one here. I definitely wouldn't not want to see it fail again, can't take that risk again... but I figured a brand new one with new tensioner should suffice? I'm just guessing but want to make sure. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 10, 2015 Share Posted April 10, 2015 I would not even contemplate anything other than the stock damper, and it will be fine for big power engines, the only real issue might be sky high rpm, which you won't be reaching unless you are building something very very trick. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted April 10, 2015 Share Posted April 10, 2015 Im with Chris. But the only reason you had an issue was because you put a used damper on, if it had been new it would be fine. Quote Link to comment Share on other sites More sharing options...
msupra1 Posted April 12, 2015 Author Share Posted April 12, 2015 (edited) So a stock crank pulley is 100% fine for 700-750bhp correct? This is the most power my motor will see. I am not going for more. My tensioner snapped on me! probably because of the stock pulley failing. I am lucky the timing belt didn't skip and bent my rods or something... that was a close call. An ATI or TITAN motorsports dampened pulley is not that far off on price but stock one is a bit cheaper. I am revving to 8000rpm on a built head, stock 2jz bottom end. Edited April 12, 2015 by msupra1 (see edit history) Quote Link to comment Share on other sites More sharing options...
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