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Gear alignment
Posted: Sat Jul 15, 2023 12:02 pm
by Greaser2
Is this good enough alignment or should it be better? R16
IMG_3811.jpeg
Re: Gear alignment
Posted: Sat Jul 15, 2023 4:03 pm
by spyder
I put shims under the shoe(s) to take out most of the slack in the chain until the oil pressure it there.
Re: Gear alignment
Posted: Sat Jul 15, 2023 5:17 pm
by david premo
Be careful with the R16/20 as there are two different types of cam gears and cams, metric and SAE. There is a tech wiki article about this. Read it and make sure you are putting the correct combination of components together.
Re: Gear alignment
Posted: Sat Jul 15, 2023 5:52 pm
by redroadster
That's not a great cam gear from the wear ,I see.....I mean crank gear , both
You should see the difference anew gears would make tightening up the chain. The crank will break a tooth off soon IMO
A side by side comparison should be done
Re: Gear alignment
Posted: Sun Jul 16, 2023 2:22 pm
by Greaser2
This engine had been rebuilt when I got it. Based on the teeth wear, I’m thinking they are matched/original. Engine was running fine, I only took of the cover to clean it. Just wondering if the dots should be aligned better?
Re: Gear alignment
Posted: Mon Jul 17, 2023 9:34 am
by Gregs672000
If you rotate the motor slightly they will aline. Is this position based on the timing mark on the crank pully?
Re: Gear alignment
Posted: Mon Jul 17, 2023 10:05 am
by fj20spl311
REPLACE both gears and Chain NOW
The crank gear is JUNK
IMHO
Re: Gear alignment
Posted: Mon Jul 17, 2023 2:46 pm
by Gregs672000
fj20spl311 wrote: Mon Jul 17, 2023 10:05 am
REPLACE both gears and Chain NOW
The crank gear is JUNK
IMHO
Yep, pretty worn. Money well spent for sure.
Re: Gear alignment
Posted: Wed Jul 19, 2023 10:30 am
by Greaser2
Can these gears be removed and replaced without pulling the shafts out? Sure this is a yes.
Re: Gear alignment
Posted: Wed Jul 19, 2023 11:23 am
by david premo
Yes they can be replaced without removing the crankshaft or camshaft. Be sure to verify which camshaft is in your engine as the metric cam and SAE camshafts are interchangeable.
Dave
Re: Gear alignment
Posted: Wed Jul 19, 2023 12:25 pm
by Greaser2
david premo wrote: Wed Jul 19, 2023 11:23 am
Yes they can be replaced without removing the crankshaft or camshaft. Be sure to verify which camshaft is in your engine as the metric cam and SAE camshafts are interchangeable.
Dave
I have the 411SSS so I'm guessing I have SAE. If I buy a new matching set of gears, Metric or SAE, will either fit? Guessing I need SAE 3 main set.
Re: Gear alignment
Posted: Wed Jul 19, 2023 4:23 pm
by david premo
The way to check it is to check the thread pitch of the bolt that holds the large sprocket to the cam, or check it by threading in both a 3/8 bolt and a 10mm bolt. The 3/8 will fit in both camshafts and a 10mm will only thread into the metric camshaft if I remember correctly.
Dave
Re: Gear alignment
Posted: Thu Jul 20, 2023 5:52 pm
by fj20spl311
david premo wrote: Wed Jul 19, 2023 4:23 pm
The way to check it is to check the thread pitch of the bolt that holds the large sprocket to the cam, or check it by threading in both a 3/8 bolt and a 10mm bolt. The 3/8 will fit in both camshafts and a 10mm will only thread into the metric camshaft if I remember correctly.
Dave
Correct
Re: Gear alignment
Posted: Tue Jul 25, 2023 10:00 am
by Greaser2
New gears and chain installed, much improved.