As someone whose mechanical skills max out at basic bolt-ons, I really appreciate getting a detailed look into the internals of the 660! Thanks for posting.
As a 660 owner this was really interesting. Great to see inside the engine and pick up a few tips on how to remove and re-install the cams should I need to. I got lucky at my 20,000km valve clearance check - all were still within spec so I didnt need to do any shim work 👍
Just a note, the procedure from April is to detach the inlet cam sprocket and use a tool to rotate the camshaft so there is no valve spring pressure before removing the cam caps
Thank you Dave for another great episode. Can’t wait to see how that bike performs should be outstanding like everything else you’ve redone. Cheers from a cloudy and cold Southern California!
Great videos! I track my Tuono 660 and have never seen a good detail of how to remove/reinstall the head and all the timing components. This makes me less nervous about pulling the head and getting work done on it.
Great series. You are covering aspects of the RS660 that haven't been shown on TH-cam since the bike's release in 2021. I will watch everything you put out about this bike!
That was most interesting my good man, thank you very much. Edit: 11k views, there should be absolute minimum 1100 thumbs up/likes, c'mon, get them thumbs a wiggling.
Did you fit new valve guide oil seals ? I only ask because I reused some once and they ended up leaking, so I change them every time I have the head apart now. I probably nicked the edge of the seal. Modern engines are so neat !
Bloody brilliant Dave & Rob! Very well presented & explained. Do you mark bolts & screws so that it's a visual identifier as being torqued to spec? No mark, not torqued.
your doing the cam timing a bit wrong there compared to the Aprilia Manual & special tooling! your supposed to install the cam holder with cams "off lobe" then rotate the intake into place with a special tool! this greatly reduces the chances of damage to the head & cam cover when reassembling!
Very nice work, but I would highly suggest putting Carrillo rods or any other appropriate heavy duty rod in any 660 that is being built for supertwins. We have raced the RS660 in MA Twins Cup since its release and we saw a lot of ventilated cases until we were allowed to replace rods starting in 2023. Problem solved..
Hi Dave. One thing I did notice during the rebuild was that the inlet cam chain drive gear was as far over to the right as it could go. Of course that may have been the camera angle. When I time up belts/chains on car engines, it's always advisable wear possible to have the locating bolts in the middle of the slot, were you not tempted to remove the chain, turn the gear as far over to the left and then re-time the engine so the slots/bolts are symmetrical? Anul, I know, but you and me are like that!
Do you check the thicknesses of your feeler gauge strips before use? Eg.. Checking whether a 0.01mm thick feeler gauge is actually measuring to its stated thickness?
Great video. For some reason with my 660 after I install the tensioner and turn it over by hand the chain jumps teeth. Not sure if it's because I have reground kent cams?
Not in this case unfortunately, both cams locked into place, even used the cam loading tool. Everything is aligned until I turn it over and it jumps. Maybe it's a faulty tensioner
@obsession_engineering without it is pretty hard to set the intake cam at timining point. Moreover the cam caps are not designed to compress springs by screwing it, you risk cracking it every time you do. BTW the Tuareg cam tool costs just a few bucks and works very fine when motor is dropped from the bike, buy it!
This is the part number for the official Aprilia timing kit which includes the inlet tool Gabro is discussed 👍 There are currently 36 kits in stock at Noale Piaggio 021045Y
As someone whose mechanical skills max out at basic bolt-ons, I really appreciate getting a detailed look into the internals of the 660! Thanks for posting.
I re built a cb900 in the 80s it took forever to re grind 16 valves and re assemble the valve train. You guys have the patience of a saint
And new valves and seats help
Love these vids, learning how to get the best out of an Italian beauty is right up my street.. appreciate the endless double entendres too 😂
As a 660 owner this was really interesting. Great to see inside the engine and pick up a few tips on how to remove and re-install the cams should I need to. I got lucky at my 20,000km valve clearance check - all were still within spec so I didnt need to do any shim work 👍
Just a note, the procedure from April is to detach the inlet cam sprocket and use a tool to rotate the camshaft so there is no valve spring pressure before removing the cam caps
Thank you Dave for another great episode. Can’t wait to see how that bike performs should be outstanding like everything else you’ve redone. Cheers from a cloudy and cold Southern California!
Thanks again Dave. Great vid. Was especially interested in the oil pressure relief valve stuff as my 660 is a bit older. Cheers.
Great videos! I track my Tuono 660 and have never seen a good detail of how to remove/reinstall the head and all the timing components. This makes me less nervous about pulling the head and getting work done on it.
They're pretty straightforward really. Nicely built too
Great series. You are covering aspects of the RS660 that haven't been shown on TH-cam since the bike's release in 2021. I will watch everything you put out about this bike!
Excellent as always, David and Robert 👍
Very good information, thank you.
Really enjoyed that.
That was a great video. Thanks man.
THANK YOU. KEEP UP THE GOOD WORK
A very good Thursday evening….Gentlemen, 👍🇮🇲👌
Always great videos 👍🏻👍🏻🇬🇧
That was most interesting my good man, thank you very much.
Edit: 11k views, there should be absolute minimum 1100 thumbs up/likes, c'mon, get them thumbs a wiggling.
great vid nice work keep up the great vids thanks for share dave thanks lee
Dave and Rob stripping supertwins... 😁
Baw deep in engines 👌👌
Great video nothing to add!
Did you fit new valve guide oil seals ? I only ask because I reused some once and they ended up leaking, so I change them every time I have the head apart now. I probably nicked the edge of the seal. Modern engines are so neat !
Always a thorough and good time. Are the valves steel?
Bloody brilliant Dave & Rob!
Very well presented & explained.
Do you mark bolts & screws so that it's a visual identifier as being torqued to spec? No mark, not torqued.
No, but I do double check the torque
your doing the cam timing a bit wrong there compared to the Aprilia Manual & special tooling! your supposed to install the cam holder with cams "off lobe" then rotate the intake into place with a special tool! this greatly reduces the chances of damage to the head & cam cover when reassembling!
Very nice work, but I would highly suggest putting Carrillo rods or any other appropriate heavy duty rod in any 660 that is being built for supertwins. We have raced the RS660 in MA Twins Cup since its release and we saw a lot of ventilated cases until we were allowed to replace rods starting in 2023. Problem solved..
We've seen almost non in the UK. Are you revving them above standard?
Hi Dave. One thing I did notice during the rebuild was that the inlet cam chain drive gear was as far over to the right as it could go. Of course that may have been the camera angle. When I time up belts/chains on car engines, it's always advisable wear possible to have the locating bolts in the middle of the slot, were you not tempted to remove the chain, turn the gear as far over to the left and then re-time the engine so the slots/bolts are symmetrical? Anul, I know, but you and me are like that!
No, makes no difference where the bolt is in the slot, why have a slot and not enjoy it 🤣
@obsession_engineering Couldn't agree with you more Dave, so it's just me that's anal 🤣👌
Thank you
Wish the valve maintenance intervals were a bit longer. Doing this every 12k gets pretty expensive
Do you check the thicknesses of your feeler gauge strips before use?
Eg.. Checking whether a 0.01mm thick feeler gauge is actually measuring to its stated thickness?
No, but I do have good quality guages!
Did your tuner do a 3 angle valve seat cut?
Oh, did you fit a thinner head gasket?
No, std gasket but head has been ground
How about the pistons, rods and crankshaft?
Standard is fine for 110bhp at least
Great video. For some reason with my 660 after I install the tensioner and turn it over by hand the chain jumps teeth. Not sure if it's because I have reground kent cams?
Sounds like the chain has moved over the teeth while torquing the cams down, not had that issue myself though, even with the big cams
Not in this case unfortunately, both cams locked into place, even used the cam loading tool. Everything is aligned until I turn it over and it jumps. Maybe it's a faulty tensioner
Let's see the same for an Aprilia V4 please. 😊
What sort of power are you expecting on this build?
You'll find out in the next installment
between rs 660 and rs 1100 are ~19kg diff. ...what is after head-treatment the result ?
The result is coming soon, promise
why don't use it's tool to load/unload the intake cam?
Hi gabro, wasn't aware of a tool for that, and didn't really need it although a simpler system would be good
@obsession_engineering without it is pretty hard to set the intake cam at timining point. Moreover the cam caps are not designed to compress springs by screwing it, you risk cracking it every time you do. BTW the Tuareg cam tool costs just a few bucks and works very fine when motor is dropped from the bike, buy it!
This is the part number for the official Aprilia timing kit which includes the inlet tool Gabro is discussed 👍
There are currently 36 kits in stock at Noale Piaggio
021045Y
my rs has ratling cam chain, do you think it could be a leak in the cam chain tensioner rubber gasket?
Possible, but unlikely. Easy to check though.
@@obsession_engineering what do you think it could be?
Give me a 2 stroke anyday 😲
Just make the margarita already geez, we don’t need to know everything about the blender.
The journey is as important as the destination my friend 😁
@@obsession_engineeringexcellent video. im just surprised how small that motor is.
super crap🤣🤣🤣
Care to explain why?