Tony Posted June 21, 2007 Report Share Posted June 21, 2007 When an engine is modified and producing more bhp does the cam belt need to be replaced more often or even for a stronger one, if there is such a thing? Quote Link to comment Share on other sites More sharing options...
w481ggc Posted June 22, 2007 Report Share Posted June 22, 2007 well i've doubled the power so i'm gonna half the miles or years for the next change , for what it costs to change a belt against re-building an engine it's a no brainer , Quote Link to comment Share on other sites More sharing options...
Tony Posted June 22, 2007 Author Report Share Posted June 22, 2007 well i've doubled the power so i'm gonna half the miles or years for the next change , for what it costs to change a belt against re-building an engine it's a no brainer , Seems wise... It's odd some seriouse guidelines are not avalible since a belt failure is so terminal. Quote Link to comment Share on other sites More sharing options...
scorps Posted June 22, 2007 Report Share Posted June 22, 2007 On the IS if the max output is 400 bhp on STD internals then i'd assume the belt would be o.k up to that. I'd like to know too if there are stronger belts out there, always wondered. Quote Link to comment Share on other sites More sharing options...
w481ggc Posted June 23, 2007 Report Share Posted June 23, 2007 On the IS if the max output is 400 bhp on STD internals then i'd assume the belt would be o.k up to that. I'd like to know too if there are stronger belts out there, always wondered. the max bhp on STD internals is approx 260 bhp befor it go's bang , the belt change at 6 years or 100,000 miles by lexus is a long time , my belt was 6 years old with 60,000 miles and was found to be delaminating ( falling apart ) , ive looked for stronger belts too , with no joy , Quote Link to comment Share on other sites More sharing options...
scorps Posted June 23, 2007 Report Share Posted June 23, 2007 Dave my statement wasn't fact it was a guide (what do in know) ....LOL Intresting though as i changed mine at the 6 yr term (46k) and it had a slight nick in the belt. Quote Link to comment Share on other sites More sharing options...
w481ggc Posted June 23, 2007 Report Share Posted June 23, 2007 so your belt was breaking up too , 6 years or 100,000 miles for a belt , thats pushing it a bit for all the stress and conditions it has to put up with i think , we've both been lucky they did'nt break Quote Link to comment Share on other sites More sharing options...
scorps Posted June 23, 2007 Report Share Posted June 23, 2007 When the salesman was selling me the car and he said it will last till 100k.......i thought yeah right, never trusted any cambelt mileage guaranteed by the sales patter. Quote Link to comment Share on other sites More sharing options...
Roger440 Posted June 26, 2007 Report Share Posted June 26, 2007 The need for a cam belt change frequency to be increased would primarily be governed by the load. If you fitted a high lift cam and stronger valve springs, then clearly the load on the belt will increase. Just fitting a massive turbo won't increase the load or wear on a cam belt. That said, if it spends its life at high rpm, then it may still be worth doing more frequent changes. Quote Link to comment Share on other sites More sharing options...
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