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straight cut timing gears

Started by _T0rana_ , Mar 04 2013 05:25 PM

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26 replies to this topic

#1 _T0rana_

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Posted 04 March 2013 - 05:25 PM

just installed some JP race only straight cut timing gears and u cant hear them at all ??? do they need to get run it to start making noises ?

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#2 boomfunk

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Posted 04 March 2013 - 07:32 PM

lol some are noisier than others, used to be all the rage in the 90's

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#3 _T0rana_

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Posted 04 March 2013 - 07:57 PM

mine r meant to be really loud and not for street use they r so loud ???

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#4 _nemo355v8_

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Posted 04 March 2013 - 08:12 PM

dont get straight cuts unless you need them, pay hundreds to make your motor whine but would spend the same to get rid of a annoying diff whine lol

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#5 _judgelj_

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Posted 05 March 2013 - 07:46 AM

Maybe the oil needs to be directly away from the gears slightly. I'm not sure but I think people do the opposite to quiten them.

Maybe the oil needs to be directly away from the gears slightly. I'm not sure but I think people do the opposite to quiten them.

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#6 orangeLJ

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Posted 05 March 2013 - 11:45 AM

why would you want noisey timing gears?

restrict the oil squirter (or block it off..) and you'll have noise

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#7 _Emu_

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Posted 05 March 2013 - 12:43 PM

I had straight cuts in my old ski boat and ran it for 5 years....never once did they make any noise like I was expecting. Geez I was glad too

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#8 _judgelj_

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Posted 05 March 2013 - 02:47 PM

Some people like the noise I suppose?

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#9 _Quagmire_

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Posted 05 March 2013 - 02:50 PM

ya need to take a plug lead off to get em to work

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#10 warrenm

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Posted 06 March 2013 - 06:46 AM

ya need to take a plug lead off to get em to work

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#11 _oldjohnno_

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Posted 06 March 2013 - 07:42 AM

I had some in a stock 149, I think they were Rollmaster. They were reeeeeeeeally irritating.

Kind of embarrassing too - I'd whine into a servo or whatever and blokes would be like "jeez what you got in that mate?" thinking it's a big-block or something and I'd go "cough mumble just a stock 149...."

They got swapped out pretty quickly.

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#12 _judgelj_

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Posted 06 March 2013 - 02:57 PM

It's also a bit embarrassing when you're revving the guts out and the car doesnt move half as fast as the people watching expect it to.

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#13 _oldjohnno_

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Posted 06 March 2013 - 03:16 PM

It's also a bit embarrassing when you're revving the guts out and the car doesnt move half as fast as the people watching expect it to.

It was pretty quick - low nines over the quarter.

Minutes, that is...

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#14 _judgelj_

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Posted 07 March 2013 - 09:14 AM

a 9 is a 9, mate.

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#15 Lima31

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Posted 07 March 2013 - 09:47 AM

I don't think you'd want them noisier than that designed, as excessive noise => wear => bits of metal scraping through your oiling system

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#16 UCSLE

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Posted 07 March 2013 - 07:10 PM

6cyl or v8? I had some on a old stock 202 and could barely hear them. I think they may get louder the bigger the cam and heavier the valve springs are .

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#17 _Bomber Watson_

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Posted 07 March 2013 - 07:20 PM

I don't think you'd want them noisier than that designed, as excessive noise => wear => bits of metal scraping through your oiling system

I was under the impression the noise was caused by air escaping from the teeth, not wear......

Cheers.

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#18 boomfunk

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Posted 07 March 2013 - 08:20 PM

rollmaster are noisy, as stated above, i have rollmaster also and you can hear it from a up the road...

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#19 _NYS 71_

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Posted 07 March 2013 - 08:27 PM

pretty sure they work off clearances, the more clearance they have the more they whine, had a set in an old 186 never could hear them, gave them to a mate to put on his 202 the same set where very loud.

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#20 _T0rana_

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Posted 08 March 2013 - 05:50 PM

there is no way to set the clearence? wouldnt they get louder the more they wear in

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#21 _NYS 71_

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Posted 08 March 2013 - 08:11 PM

if you where to line bore the block they can drop the bar down a bit to creat the centre of the main caps a bit lower thus giving your straight cuts more backlash. many motors from cast will have slightly different distance between the centre of cam position and the main caps, thats why some motors will sound louder with the gears.. mine have been in for alomost two years, not to many k's but wouldn't say they have gotten louder.

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#22 _L32M20_

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Posted 23 March 2013 - 09:26 PM

i was told the good quality ones arnt noisy.get some gilmer pulleys.they make pretend blower noises, like my car. :spoton:

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#23 _LXSS350_

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Posted 24 March 2013 - 05:24 AM

Never understood why people like them, they are mechanically too harsh imo and I can't see the benefit. If you want the annoying whine far better with a gilmer belt system. For me to advertise that I had some mumbo under the hood I would rather put more bark in the exhaust (when you hit it hard), rather than put up with that whine. .