Evo cam gear measurement
HDF Community Team
Joined: Dec 2005
Posts: 5,418
Likes: 2,621
From: NC USA
Measuring in tenths of thousands still comes down to "feel" to a degree, and cam gear mesh isn't the most critical thing other than whine or clatter from a bad match.
Most aftermarket cam gears (including SE) are a size red, though some are a large red, others a small red. If you have a larger red gear like Andrews tend to be, and put it against a large red pinion, it'll whine horribly. The Crane "red" gears tended to be on the smaller end of the size scale. The correct size pins are only totally necessary when sizing / matching pinion and cam gears from scratch.
Never used a Woods but you may be OK with the gear it comes with. If you do want or need to use your old gear, get back to us. Using a keyed gear on a none keyed cam (which will have a notch on the shoulder) is not difficult, but not as straight forward, meaning you can't use the gear key way as your mark. Indexing the gear "off" by only .020 equals 4 degrees of the flywheel so it needs to be close.
Thread Starter
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Cruiser
Joined: Jan 2019
Posts: 162
Likes: 50
From: NY
You're welcome. Sorry I got so long winded but you never know who might later be looking for info without asking...
Measuring in tenths of thousands still comes down to "feel" to a degree, and cam gear mesh isn't the most critical thing other than whine or clatter from a bad match.
Most aftermarket cam gears (including SE) are a size red, though some are a large red, others a small red. If you have a larger red gear like Andrews tend to be, and put it against a large red pinion, it'll whine horribly. The Crane "red" gears tended to be on the smaller end of the size scale. The correct size pins are only totally necessary when sizing / matching pinion and cam gears from scratch.
Never used a Woods but you may be OK with the gear it comes with. If you do want or need to use your old gear, get back to us. Using a keyed gear on a none keyed cam (which will have a notch on the shoulder) is not difficult, but not as straight forward, meaning you can't use the gear key way as your mark. Indexing the gear "off" by only .020 equals 4 degrees of the flywheel so it needs to be close.
Measuring in tenths of thousands still comes down to "feel" to a degree, and cam gear mesh isn't the most critical thing other than whine or clatter from a bad match.
Most aftermarket cam gears (including SE) are a size red, though some are a large red, others a small red. If you have a larger red gear like Andrews tend to be, and put it against a large red pinion, it'll whine horribly. The Crane "red" gears tended to be on the smaller end of the size scale. The correct size pins are only totally necessary when sizing / matching pinion and cam gears from scratch.
Never used a Woods but you may be OK with the gear it comes with. If you do want or need to use your old gear, get back to us. Using a keyed gear on a none keyed cam (which will have a notch on the shoulder) is not difficult, but not as straight forward, meaning you can't use the gear key way as your mark. Indexing the gear "off" by only .020 equals 4 degrees of the flywheel so it needs to be close.
Gregg
Advanced
Joined: Jul 2024
Posts: 75
Likes: 24
From: SF Bay Area California
Not aware of any evo cam that is different in pin size.. Cam gear diameter yes... I also didn't know that you could get a W6 without the cam gear... The woods cams are extremely good.. You can check with the .108" pins.. Just throw it in and shim it to .010" +/- .005" you'll be good to go.. Also the W6 cam will come in a lot sooner than the SE11 cam.. Just watch you compression with the 7* earlier IVC with the W6.. It'll increase your Dynamic timing.. Did you do a compression test with the SE 11 to know where you're base line is to determine if you can even use the W6 cam? The W6 set up to 10.2:1 static is it's sweet spot ....
I'm pulling aprt top end now, to rebuild rocker boxes [bike sat for 23 years, 5k miles on it) because rear is leaking and want to check umbrellas. Maybe get a peak at valvle seals, etc.
so I thought , good time for andrews 27 and b138 bearing. These pinion gear talk is making me nervous, lol. Im a pretty decent mechanic, but as this is a new beast for me, i expect some new learning curves.
since we have same bike. Can you tell me what exactly I will need to do for this cam and pinion gear mach up..
anyone else with knowledge of '98 evo 1340cc. Andrews cam and pinion match, please reply also.
I will pull cam chest later today or tomorrow to get pics and hopefully identify the existing pinion gear.
Also, is it just easier to change out gear on cam?
Thanks
Cidd
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,114
Likes: 7,638
From: Poolville
@Ciddvicious
Don't worry about trying to set up the right gears.. Andrew's is very good about supplying a stock replacement.. So just throw it in and enjoy it.. And yes the inner Torrington is very important..
Don't worry about trying to set up the right gears.. Andrew's is very good about supplying a stock replacement.. So just throw it in and enjoy it.. And yes the inner Torrington is very important..
Advanced
Joined: Jul 2024
Posts: 75
Likes: 24
From: SF Bay Area California
@Ciddvicious
Don't worry about trying to set up the right gears.. Andrew's is very good about supplying a stock replacement.. So just throw it in and enjoy it.. And yes the inner Torrington is very important..
Don't worry about trying to set up the right gears.. Andrew's is very good about supplying a stock replacement.. So just throw it in and enjoy it.. And yes the inner Torrington is very important..
.108 pins and micrometer, and shop manual with chart. So I will measure, just to get some experience.
I also will put Read breather gear with shims in, and check end play.
Any pointers for the end play? Lol
oh yeah, I also read that the reed breather gear does not work with lower breather set up. I have the relocated breather filter mounter on the lower frame. Should I remove, and put a big sucker with integral breather set up?
Thanks again!
Compression baseline was 150 for each cylinder
leak down was only 1.5 to 2 lbs lower for both cylinders tested at 95psi. Only 5700 miles on motor.
I will post results after rebuild.
Last edited by Ciddvicious; Mar 31, 2025 at 01:15 PM.
Advanced
Joined: Jul 2024
Posts: 75
Likes: 24
From: SF Bay Area California
I have no cam noises now, but I dont have a press...yet..lol
I will try the fit, and if looks good close it up.
If I get noise, I will cut the stock rods, open it up and have gear changed. Then put ez rods in.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,114
Likes: 7,638
From: Poolville
Thanks Man! I got the rockers off, today i will pull cam chest. I have the 1
.108 pins and micrometer, and shop manual with chart. So I will measure, just to get some experience.
I also will put Read breather gear with shims in, and check end play.
Any pointers for the end play? Lol
oh yeah, I also read that the reed breather gear does not work with lower breather set up. I have the relocated breather filter mounter on the lower frame. Should I remove, and put a big sucker with integral breather set up?
Thanks again!
Compression baseline was 150 for each cylinder
leak down was only 1.5 to 2 lbs lower for both cylinders tested at 95psi. Only 5700 miles on motor.
I will post results after rebuild.
.108 pins and micrometer, and shop manual with chart. So I will measure, just to get some experience.
I also will put Read breather gear with shims in, and check end play.
Any pointers for the end play? Lol
oh yeah, I also read that the reed breather gear does not work with lower breather set up. I have the relocated breather filter mounter on the lower frame. Should I remove, and put a big sucker with integral breather set up?
Thanks again!
Compression baseline was 150 for each cylinder
leak down was only 1.5 to 2 lbs lower for both cylinders tested at 95psi. Only 5700 miles on motor.
I will post results after rebuild.
Also I've never installed the S&S reed valve, so no help there.
As for cam end play, as long as you have a couple of thousandths WITHOUT a cam cover gasket in place you'll be fine..
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Advanced
Joined: Jul 2024
Posts: 75
Likes: 24
From: SF Bay Area California
Are you talking about a bottom breather, cause if you are you have nothing to worry about. Your 94 is a top breather.
Also I've never installed the S&S reed valve, so no help there.
As for cam end play, as long as you have a couple of thousandths WITHOUT a cam cover gasket in place you'll be fine..
Also I've never installed the S&S reed valve, so no help there.
As for cam end play, as long as you have a couple of thousandths WITHOUT a cam cover gasket in place you'll be fine..
I'm feeling confident now, with your guidance!
I Read up on the upper lower breather difference. Earlier 92 or so and before were lower.
Semi related,
with my breathers bypassing air cleaner, im having difficulties finding a new air cleaner setup.. seems weird that the performance ones would let the blow by go back in..?
suggestions on a good one that doesnt?
Last edited by Ciddvicious; Apr 1, 2025 at 12:44 AM.