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-   -   kv6 hydraulic cam followers - refitting ? (https://www.the75andztclub.co.uk/forum/showthread.php?t=292380)

chris75 29th January 2019 16:19

kv6 hydraulic cam followers - refitting ?
 
I am rebuilding the heads on my kv6 and have finally got the valves back in the head ( those collets are fun ! ) . Ready to refit the hydraulic followers but wondering what is best practice ? I have seen many opinions that they need to be immersed in oil and "pumped up " prior to fitting , but Haynes and Rave say to just oil them up well and refit in original locations , leaving the engine to pump them up .
What do those who tinker with these think ? :shrug:

beinet1 30th January 2019 13:19

Do as specified by Haynes.

You should be aware of the the tappets may expand some when out of the cylinder head. In many cases, the tappets have not collapsed sufficient after installation due to internal "gunk buildups", making the valves not closing properly on the initial start up and making the engine runs pretty roughly due to lack of compression on one or more cylinders. In most cases, the tappets will settle quickly under the first warm-up and make the engine run smoothly again.

Just a nice thing to have in mind....

roverbarmy 30th January 2019 13:47

Some good info here:-
https://www.youtube.com/watch?v=9geLvfDx4eA

chris75 30th January 2019 16:53

Thanks for those answers :} The YouTube video looks like a lifetime's work considering there are 24 of those followers ! :eek:
Anyone else ?

roverbarmy 30th January 2019 17:23

24 followers x 5 minutes each = 2 hours. Time well spent. ;)

chris75 30th January 2019 18:45

Quote:

Originally Posted by roverbarmy (Post 2707061)
24 followers x 5 minutes each = 2 hours. Time well spent. ;)

5 minutes , eh ? :}

COLVERT 31st January 2019 10:05

The engine will quite happily do the job for you.---:D


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