Manual cam chain tensioner - Gen2

[Saloonatic67]

I've finally managed to locate a manual cam chain tensioner for the bike 
The Gen 2 tensioner is located in the rear of the engine block, unlike the Gen 1, and is a completely different thread size.
Once I've taken delivery I'll post up further details in case anyone is interested.

[Antares]

Is there a reason to do it in the first place on the gen 2? The reason it was replaced on Gen 1s was due to the noisy start up, nothing else. Under operation they work fine until things wear out a bit.

[smithy]

Originally Posted by Saloonatic67

I've finally managed to locate a manual cam chain tensioner for the bike 
The Gen 2 tensioner is located in the rear of the engine block, unlike the Gen 1, and is a completely different thread size.
Once I've taken delivery I'll post up further details in case anyone is interested.

The reason the Gen-1 tensioner is at the front of the engine is due to the fact that the Gen-1 cams and camchain spin backwards, Gen-2's all spin in the normal direction.

Smithy.

[esso_sa]

Originally Posted by smithy

The reason the Gen-1 tensioner is at the front of the engine is due to the fact that the Gen-1 cams and camchain spin backwards, Gen-2's all spin in the normal direction.

Smithy.

As far as I know, cam chain on Gen 2 spins clockwise (normal) direction, but the camshafts spin counterclockwise, since the chain rotation is transferred to cams via the intermediate gear inside the cylinder head.

[smithy]

Originally Posted by esso_sa

As far as I know, cam chain on Gen 2 spins clockwise (normal) direction, but the camshafts spin counterclockwise, since the chain rotation is transferred to cams via the intermediate gear inside the cylinder head.

I believe you're correct Sir..! The Gen-1 does it with the "intermediate gear" running off the crankshaft.

Smithy.

[Saloonatic67]

Originally Posted by Antares

Is there a reason to do it in the first place on the gen 2? The reason it was replaced on Gen 1s was due to the noisy start up, nothing else. Under operation they work fine until things wear out a bit.

My bike is on it's second tensioner already. It was replaced under warranty as the chain rattled on every start up, even if the engine had only been stopped for a few seconds. BMW reckoned the tensioner wasn't retaining oil as it should.

Anyway, the manual tensioner has arrived. I've had a look but don't think I'll be fitting it any time soon, as there's no access to allow adjustment  I don't fancy the repeat process of fit, check, remove, adjust, refit over & over until it's right.
The Gen 1 tensioner position allows easy access to adjust but the Gen 2 is to the rear of the engine, tight against the frame, with no access either above or to the rear so you can get at it with the required allen key.
I guess I'll just need to get used to the inherent noise of this engine and wear ear plugs