Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: Nate on December 17, 2010, 10:06:38 PM

Title: timing gears
Post by: Nate on December 17, 2010, 10:06:38 PM
anybody got good video of em with the car running? i know i saw R.J.'s (1wildbird) on youtube, im thinking of getting em... i like the blower sound, and im wondering if it will go well with the sound of the KB blower :D but i cant find any good sound clips, let alone a KB with the gears...
Title: timing gears
Post by: 1BDBIRD on December 20, 2010, 08:46:18 PM
I got a set in my 351w but its not running yet!!!! Sorry!!!  No sound for ya!!  They do sound good. I got the quieter version so it doesnt get to annoying!! 
BUUUUUUUUUUUUZZZZZZZZZZZZZ!!!!
Title: timing gears
Post by: hypostang on December 20, 2010, 08:50:03 PM
My brother had a set once ..I hated it and so did he , it sounded like a cat was stuck in the fan

 
 all a matter of taste though
Title: timing gears
Post by: Haystack on December 20, 2010, 09:27:34 PM
There also not good for the camshaft and valve train.
Title: timing gears
Post by: 20thanniver-ls on December 20, 2010, 09:39:09 PM
Somebody enlighten me.... what are they good for?
Title: timing gears
Post by: hypostang on December 20, 2010, 09:43:06 PM
Quote from: 20thanniver-ls;346374
Somebody enlighten me.... what are they good for?

No chain to stretch or break , maintains timing better

So the manufacturers claim
Title: timing gears
Post by: 20thanniver-ls on December 20, 2010, 10:01:31 PM
Ah, I see. Probably best for Hi-performance motors?
Title: timing gears
Post by: 20thanniver-ls on December 20, 2010, 10:01:53 PM
Ah, I see. Probably best for Hi-performance motors?
Title: timing gears
Post by: Haystack on December 20, 2010, 10:08:38 PM
They might last longer, but they do not do timing any better. They transmit alot of harmonics and vibration into the drivetrain that can actually make it hard to keep timing at higher RPM's. For the $80 you would pay on top of a normal double roller timing chain, I would just stick with that.

My stock single roller lasted 170k or so. I have no reason to doubt a double would last as long, or longer then the stock one.

Here is a thread from SBFtech. on the subject.
http://sbftech.com/index.php/topic,18613.45.html

Long story short, it will take MORE power. It costs more, and there is no benefit.

Here is another quote for you.
I used a Dynagear drive for some time. Engine ran for about 3 years with very little maintenance at the strip, but developed a mysterious bog off the line. Changed everything, went back to what I started with, but changed to a timing chain instead of gear drive. Not only did it run fine again, but it also picked up .3 second! who would've figured? Seriously, it was very easy to install, just had to grind a casting off the inside of the timing cover. It was easy with a Dremel tool. That's all that was required. Man, that thing was noisy!

http://www.fordmuscleforums.com/all-ford-techboard/415622-289-302-gear-drive.html
Title: timing gears
Post by: Nate on December 23, 2010, 11:28:00 PM
hmmm interesting, i always liked the sound of a roots style blower, thought i'd make the KB im getting louder by useing the gears, but maybe ill just use the chain. i keep getting more and more bad things about the gears.
Title: timing gears
Post by: turbo_88_XR7 on December 23, 2010, 11:36:36 PM
the harmonics tend to weaken the idler gears after a while.. i have a pete jackson set where 1 of the teeth actually cracked and chipped.. but i've used others and ran more miles with no issues.. but the harmonics really throw things off a bit
Title: timing gears
Post by: SirChirpAlot on December 26, 2010, 03:33:06 PM
I ran a B&M gear drive in my Z28 for years with no prob on the street and track.
I would not run one anymore just for noise they make.  But each to there own.
Title: timing gears
Post by: turbo_88_XR7 on December 26, 2010, 06:16:32 PM
not to mention, after a few thousand miles, they lose their 'blower' sound and just gets down right annoying