tappet adjustment nightmare

[splod77]

My van isnt running right it starts fine but when you try to drive it it has no power. had to keep tapping the throttle pedal to get home. Checked the usual culprits but couldnt find the problem so thought i would start at the tappets and work though everything.
When i removed the rocker cover a cylinder head nut dropped out!!! :shock: the others i can get to seem tight
whats your thoughts on why one has worked loose and do you think its caused any damage?
thanks paul

 

[madmike]

evidently someone forgot to torque that one Just check the others and do a full tune up good luck

 

[vintagedan]

Get it serviced by someone who knows what they are doing.
Works out cheaper in the long run.

 

[Todster]

I had 2 come loose on my bus, turned out to be studs pulled out of case. If someone has over tightened them in the past, this can happen. It is absolutely imperitive that they are torqued up to the correct setting.
I hope that this is not what has happened to you.

Cheers
Mark

 

[splod77]

just got my torque wrench back and unfortunately it will not torque up think it must be pulling the stud out of the case.
What are my options? is it simply a strip down and helicoil
thanks paul

 

[jonboylaw]

Search for "case savers", would suggest doing all of them, most likely a complete strip and re-build, but others may know better.


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[Clem]

You'll have to pull the engine and strip it down to do that job. Its a pain in the arse, but its fixable.

 

[madmike]

They do make larger self tapping studs,no need for dis-assemble

 

[splod77]

hi todster did you fix the studs yourself or did you get someone to do it for you?
thanks paul

 

[rlepecha]

I managed to get away with not stripping the case when I fitted case savers. I was on a bit of a budget at the time. so I made a couple of tools:
*a adaptor for the hoover to go around the back of each hole
*2x centralising tubes that I could clamp to the case to ensure the holes were perfectly perpendicular to the case. Also to make sure the tap was perpendicular.

All in all that went well, I changed the oil 200 miles after doing it and had no swarf in it so I can only presume the steps I took worked

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[Todster]

Hi Splod,
Have a look here: http://forum.earlybay.com/viewtopic.php?f=2&t=58447" onclick="window.open(this.href);return false;

I ended up with a new case, as I had 10mm head studs with 14mm case savers already fitted. Apparently, that is the largest case saver you can fit before you start impacting on the cylendar seating area. It's worth checking what size studs you have and if you already have case savers.
I did think about getting my case welded up and then the stud holes re-drilled, but when I split the case, the state of the bearings and crank made the decision for me.
I hope you don't have to go to these lengths to get sorted.

Cheers
Mark