FFF head and cams removal

[spitfire4v8]

Is anyone out there running an FFF head with the DUPLEX chain arrangement .. I'd like to know if there's a secret way of getting the cams out without removing the timing cover. At the moment I have a car in and I need to change the cam timing by more than the adjustment slots allow so I need to jump the chain over a tooth on both inlet and exhaust sprockets. Sadly i can't get either the sprockets off the front of the cams or the cams out.

Anyone got any pointers ? I've called racing green and there's nobody there can help.

[mk1fan]

Woody at TVR101 might be able to help.

[m4tti]

Tool that clamps the camshaft sprockets in place... allowing the cams to be lifted and the buckets removed.

Edited by m4tti on Wednesday 28th October 21:05

[Don1]

mk1fan said:

Woody at TVR101 might be able to help.

This would be my shout.

[spitfire4v8]

Don1 said:

mk1fan said:

Woody at TVR101 might be able to help.

This would be my shout.

thanks yes I will call

[spitfire4v8]

m4tti said:

Tool that clamps the camshaft sprockets in place... allowing the cams to be lifted and the buckets removed.

Edited by m4tti on Wednesday 28th October 21:05

that doesn't help, I can't get the cams clear of the sprockets. presumably the tool you refer to works on the simpex chain versions which have a slimmer sprocket ? On this duplex version i cannot see how on earth you can adjust the valve clearances without removing the engine.. rather expensive come service time.

[spitfire4v8]

Woody's a lovely chap .. hasn't done one with the duplex chain, always had the simplex conversion on the engines he's been involved with (didn't realise he's ex racing green so was exactly the right person to chat to, thanks for that).
Car off back to owner so he can take the engine out and sort it.

thanks all.

[m4tti]

spitfire4v8 said:

that doesn't help, I can't get the cams clear of the sprockets. presumably the tool you refer to works on the simpex chain versions which have a slimmer sprocket ? On this duplex version i cannot see how on earth you can adjust the valve clearances without removing the engine.. rather expensive come service time.

Ouch. Yes was talking about a simplex set. That will be extremely tight. Just seen “duplex” in capitals






Is there any way to come in from behind and between them.


I’m guessing the height in relation to the head casting isn’t there.

Edited by m4tti on Thursday 29th October 09:32

Edited by m4tti on Thursday 29th October 09:33

[Don1]

spitfire4v8 said:

Woody's a lovely chap .. hasn't done one with the duplex chain, always had the simplex conversion on the engines he's been involved with (didn't realise he's ex racing green so was exactly the right person to chat to, thanks for that).
Car off back to owner so he can take the engine out and sort it.

thanks all.

He's a cracker, isn't he? Pity about the lack of help though!

[Stunned Monkey]

Just picking this up as it is my engine. I didn't go with the simplex setup because I believe it's an arse-backwards approach anyway. The cam chain is the slowest in the engine, has the lowest inertia and the highest tension. Of all the chains in the engine it's the one least suited to switching down to simplex.

The big advantage is that the cams can be removed in situ on the FFF.

I'm happy to report that by turning 3.5mm off the boss of each side of the standard duplex sprockets, there should be enough room to remove the top chain without taking off the front cover. This is entirely redundant metalwork anyway.

Watch this space: fb.com/mys6cerbera