Crank pulley

[Teetertank]

drlloyd said:

With most of our Serpentine installations we fit the trigger wheel just behind the front pulley. This is a picture of the set-up on a Chimaera 450 engine in a Range-Rover Classic. This trigger wheel, bracket and sensor was from Trigger Wheels.



The Rover V8 has an externally balanced crank as standard but as long as you put the trigger wheel just behind the front pulley and put any damping assembly that you remove back on in exactly the same orientation (i.e.: mark the position, do not turn the engine and line up the marks during re-assembly), you should have no problems. We have done many installs on a wide range of Rover V8s and have yet to have a problem with balancing issues with the trigger wheel set-up.

Ok, this picture shows exactly the TW I have, and also the issue I was trying to get at before.

Balance and wheel alignment issues aside, I am wondering what the effect of inserting the ~5mm TW inbetween the pulley and the balance wheel has on the serpentine belt. Does it not offset the pulley wheel from it's original location, and risk the belt coming off it's grooves?

I was suggesting machining off the thickness of the TW from the balancer to compensate for the offset, and help keep the belt in alignment.

But from your experience, it seems that belt alignment is not an issue?

[drlloyd]

There are many different permutations of V8 front pulley but with the Serpentine engines we have often found that the pulleys are misaligned before installing the trigger wheel.This misalignment is visible on the water pump pulley with the belt often running on the back edge of the smooth pulley. Fitting this trigger wheel between the crank pulley and damper assembly often actually remedies this slight misalignment!


www.lloydspecialistdevelopments.co.uk

[Teetertank]

drlloyd said:

There are many different permutations of V8 front pulley but with the Serpentine engines we have often found that the pulleys are misaligned before installing the trigger wheel.This misalignment is visible on the water pump pulley with the belt often running on the back edge of the smooth pulley. Fitting this trigger wheel between the crank pulley and damper assembly often actually remedies this slight misalignment!


www.lloydspecialistdevelopments.co.uk

That's great to know. Will check the alignment, before doing anything drastic. Might save a lot of work.

Cheers.

[spend]

Simon Says said:

spend said:

Except there is the locating pin / dowel that makes re-alignment pretty foolproof.... even if you have the assembly apart?

If you sandwich the TW, just drill it so the pin goes through it. I'm pretty sure on all versions the assembly is fixed on the crank woodruff key and the assembly is fixed together by the rolled steel press pin/dowel so the whole lot can't be fked by up by anyone.

Still think you could have put your point over less aggressive to drlloyd the post needed correcting not abusing SPEND

Probably just goes to show I'm not an arse licker. Are you going to try and get him to install an ecu for you, that you've been planning to install for how many years now?

[spend]

Simon Says said:

bks

Simon Says bks.... usually enlightening contribution from his wide experience of phalangeal dexterity, yet extraordinarily accurate

[neal1980]

Can you both kiss and make up...

[rev-erend]

Oh get a room you too

Anyway - just to remind people that John Eales does a very nice replacement pully (pre balanced) .. so not great news if your motor is original and externally balanced but on the wish list if you have a rebuild ..

It's sexy and about £80 :

Edited by rev-erend on Friday 5th February 14:22

[spend]

rev-erend said:

It's sexy and about £80 :

I'm not sure its still that price Alan, but certainly recommended. It's the fluid damper I referred to earlier and the TW bolts on. If you don't want to mess around its the obvious solution IMHO. Probably about £160 all in (sensor bracket, TW, pully and fluid harmonic damper), but compared to bolting / positioning a TW, fabricating brackets, rebalancing... and the damper is far better than the rubber thing as well as being un-perishable. The only complaint that could be leveraged AFIK is that they can be a damned tight fit, which Johnno mentioned earlier IIRC, but I suspect that is by design rather than any oversight TBH.

[rev-erend]

It still shows as £80 for the damper on his web site ..

http://www.rover-v8.com/jeales/web.nsf/pages/000Ho...

and is about what I paid a year ago.

[spend]

rev-erend said:

It still shows as £80 for the damper on his web site ..

http://www.rover-v8.com/jeales/web.nsf/pages/000Ho...

and is about what I paid a year ago.

The trigger wheel and sensor bracket are extra, which is what I was referring to