Inside the timing chest of a 961

Fast Eddie

Fast Eddie

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Can someone please post a pic or two of a 961 with the timing cover removed ?

I‘m curious to see what’s inside…
 
Lots here...

WTF now

So yesterday afternoon I spent a pleasant afternoon finishing off my winter refresh. The last item was to install Ollie's improved oil non return valve. Member ntst8 had very kindly loaned me his specially made M17 taps. Apparently the valve can be installed with the timing cover in place, but I...
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Thanks Cliffa.

I wondered how the cam was driven.

I’ve mention before how, personally, if I still had a 961, I’d really like to junk the EFI and fit PROPER fuelling instruments, FCR carbs !

Well, I also got thinking, how cool would it be to junk all that ign and sensor related crap and fit a PROPER freakin’ ignition system…

Inside the timing chest of a 961
 
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According to reports fuelling on the TVS 961 is much improved. Stu is booked in for a test ride in April, so we'll know if that is true.
 
cliffa said:
According to reports fuelling on the TVS 961 is much improved. Stu is booked in for a test ride in April, so we'll know if that is true.
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The fuelling was always good… WHEN it worked as intended. It was the reliability of it all, that was the issue. The entire system only being as good as the cheapest counterfeit link in the chain !
 
Fast Eddie said:
I’ve mention before how, personally, if I still had a 961, I’d really like to junk the EFI and fit PROPER fuelling instruments, FCR carbs !

Well, I also got thinking, how cool would it be to junk all that ign and sensor related crap and fit a PROPER freakin’ ignition system…
Click to expand...
Well, I can go along with that, especially if we also fit a Drouin.🤯
 
These are the only two pictures I have of mine.
 

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Fast Eddie said:
Can someone please post a pic or two of a 961 with the timing cover removed ?

I‘m curious to see what’s inside…
Click to expand...
The CNW guide to setting the timing chain tension has some good pics. I seem to remember reading that the tensioner had been 'improved' by TVS.
 
Clive said:
The CNW guide to setting the timing chain tension has some good pics. I seem to remember reading that the tensioner had been 'improved' by TVS.
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It would be flattering to think they copied my modification...

WTF now

Drop in an ocean when you're talking about a quieter cam chain on a 961....the primary side will still sound like a broken Ducati :eek::D Ha! My 916 Strada sounded just like that and it was in fine fettle ... I think .. :oops:
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All the tensioner block needs is compression limiters fitting....we were saying that in Engine Build in 2016.
 
They need to be shaped to fit the slotted m8 hole in the tensioner block to work....but that would sort the problem.
 
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Sorry - could you just describe the problem please - I remember when I checked the chain tension on mine it felt as though I could not tighten the lock bolts properly.....
 
Clive said:
Sorry - could you just describe the problem please - I remember when I checked the chain tension on mine it felt as though I could not tighten the lock bolts properly.....
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Hi Clive , I think the polymer block gets over compressed and may loosen over time ?
 
Clive said:
Sorry - could you just describe the problem please - I remember when I checked the chain tension on mine it felt as though I could not tighten the lock bolts properly.....
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The bolts tighten directly on the plastic in the recess of the upper tensioner block and have been known to come loose as the plastic relaxes. As Stu mentioned they really need steel compression limiters inserted. I chose a different approach and fixed an alloy plate to the block then used longer bolts to fix it in position.
 
Ollie has designed a complete new tensioner.
Different material, dieferent design.
I have one in my bike for testing and his mileage bikes are on the road to test the parts.
When the material will work, Ollie will go on to design an automatic tensioner.
 
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