| [ Total Views: 1060 | Total Replies: 15 | Thread Id: 97468 ] |
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 Craig Torrens
A.k.a.: Craig Torrens
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| posted on June 17th, 2012 at 06:43 PM |
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Straight Cut Cam gears.....are they all the same ???
I'm wanting to put straight cuts into a performance motor I'm building, but I wanted to know if there is a prefered brand I should be using ??
I'm probably going to use berg ones as I have stuff that I'm ordering from them this week....BUT....are CB performance, scat, bugpack etc all as
good as each other ??
Cheers for your advice 
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 matberry
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| posted on June 17th, 2012 at 06:49 PM |
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Magnum via Berg for me.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
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Craig Torrens
A.k.a.: Craig Torrens
Scirocco Rare
6 times Australian, 7 times State Hillclimb Class Champion
Posts: 8040
Threads: 347
Registered: January 10th, 2003
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Location: Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Time to go Salt lake racing, and actually achieve a result.
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| posted on June 17th, 2012 at 07:33 PM |
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Matt, these ones ?
http://www.geneberg.com/product_info.php?cPath=180_2775&products_id=474
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matberry
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| posted on June 17th, 2012 at 08:43 PM |
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Yep
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
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hellbugged
A.k.a.: Daimo Pell
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48's and straight cuts
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| posted on June 17th, 2012 at 09:24 PM |
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Yeah same as mine
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Ollie
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| posted on June 18th, 2012 at 10:33 PM |
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Can someone explain what straight cuts actually are?
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hellbugged
A.k.a.: Daimo Pell
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48's and straight cuts
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| posted on June 19th, 2012 at 03:44 AM |
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Ollie...
http://www.geneberg.com/cat.php?name=Technical%20Information&cPath=2775
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waltermitty
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| posted on June 19th, 2012 at 08:25 AM |
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| Quote: | Originally
posted by Ollie
Can someone explain what straight cuts actually are?
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Like most wives they make a noisy whineing sound all the time. Mitchell
23 windows ...8 too many!
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vwo60
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| posted on June 19th, 2012 at 08:28 AM |
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I concider a set for my new build but deceided not to use them after Dangerous Dave told me that they wear quickly.
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matberry
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| posted on June 19th, 2012 at 08:34 AM |
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IMO they don't wear prematurely all things being equal (that is good quality ones, esp steel/steel). I run them on all dual spring applications to
prevent premature cam thrust bearing failure. (and yes, all my engines also get two thrust's fitted with directional oiling groove)
EDIT:The stock gears are helical gears that introduce a force that tries to drive the cam and crank in the direction of thrust in opposite
directions, this will wear cam bearings when higher loads of more valve spring tension are encountered.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
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vwo60
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| posted on June 19th, 2012 at 06:19 PM |
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I just pulled down my 2110 running dual springs, fk87 and using a set of helical gears, no wear on the thrust, as i said dangerous dave told me he
has pulled a few engines down and the straight cut gears were worn. i have a set of Gene Berge straights cut gears and would not use them in my new
engine as the machining is very rough with the gears only machined and not ground.
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DubbyDo
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| posted on June 19th, 2012 at 07:25 PM |
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I want straight cuts when I build my motor, are you able to adjust the timing with these without splitting the case every time you want to adjust
them? Do they give you cam specs at .050" when you buy an aftermarket cam?. Forgive my ignorance, Ive only degreed cams in on Holden 8's, I'm
guessin it would be done the same way
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on June 19th, 2012 at 07:31 PM |
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Most come with degree washers, so yes you can change the cam timing (+ or - 4deg) without splitting the case.
Yes Cams have the specs at .050 so you can dial in your cam.
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vlad01
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| posted on June 19th, 2012 at 07:54 PM |
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| Quote: | Originally
posted by waltermitty
| Quote: | Originally
posted by Ollie
Can someone explain what straight cuts actually are?
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Like most wives they make a noisy whineing sound all the time. Mitchell
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no actually they sound quite nice compared to wifes and women.
they are a mechanical whine not emotional, irrational, menstrual nagging whine. Geez guys, don't even know the difference?
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE |
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DubbyDo
A.k.a.: Dave
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| posted on June 19th, 2012 at 08:11 PM |
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| Quote: | Originally
posted by Craig Torrens
Most come with degree washers, so yes you can change the cam timing (+ or - 4deg) without splitting the case.
Yes Cams have the specs at .050 so you can dial in your cam.
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Is it just a case of leaving the oil pump off till you are done?
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matberry
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| posted on June 19th, 2012 at 09:22 PM |
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Yep, pull the oil pump to adjust cam timing. There are all sorts of reasons they wear, no argument. I,ve also pulled engines to find premature cam
bearing wear on the thrust so tend to sway towards straights, but certainly only a must with higher spring tensions.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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