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HD Cam Chain

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Seabeowner:
Been putting a 500 engine together with the best bits of two engines and a some new items. Re-bored cylinders (thanks Bryan), clutch plates. some new bearing shells and a DID HD cam chain (courtesy of oddjob).
Affixed the head today and all went well. And got the cam chain on the sprocket OK. But to lift the sprocket onto its location on the cam I had to lever it and bang into place. The chain is now so VERY VERY tight.
Is this OK? Will it loosen up/damage bearing surfaces/snap? Afraid to continue.

taysidedragon:
It sounds like it's not seated on both sprockets properly. If not on the bottom sprocket properly it could be sitting on top of the sprocket teeth making it tight. Shouldn't lever or bang it into position, something not right.
Otherwise the tensioner is pressing on the chain run or the chain is too short. 🤔

Bryanj:
Are you sure the front cam chain guide is fitted correctly, it goes INSIDE the chain

Seabeowner:
Definitely sitting on both upper and lower sprockets correctly and I have "timed" the cam position. Rotates smoothly off the kickstart and keeps position.
Double checked the forward slipper and checked its upper and lower location in the crankcase and block. May check for a third time. Have done this operation OK maybe 10 times in the past. I know its inside the chain as I rest the chain on it. as it stops it falling in before you put the head on.

K2-K6:
Recently bought a borescope to look into places like this, relatively cheap @ £25.00 with front and side facing camera.

Surprisingly good, with light source too and straight into phone with easy app to use in Android. Just a generic product, nothing fancy.

We had car problem with in tank fuel pump and associated hardware, with out a real way of checking internally for which is was very good.

Since used it to check bores through spark plug access and with very good results too.

Then another with son's friend's engine, with a number of faults. Clear inspection and analysis of bore again to confirm head gasket failure and where it was compromised. Bit of a saga prior to this as old car in which original engine suffered from cooling system failure, bought salvage replacement to find it compromised when started, then this very easy inspection to pinpoint further action.

A bit long winded, but emphasise it's easy to use and detailed images are ideal for this type of access to inspect thoroughly. Very good to look inside something rather than dismantling initially.

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