Bosh and lucas injectors

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pwykes
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Bosh and lucas injectors

Post by pwykes » Sun Dec 14, 2014 7:31 pm

Good day

After removing my lucas injectors and cleaning them i was just wondering why the haynes manual specifies two largely different torque settings for bosch (66ft lb) and lucas (96ft lbs) models, I first thought it may be that lucas have a higher setting because there was more threads on the injector, but after comparing then in google images they both appear to have the same amount, must be some logical reason does anybody know.
Phil.

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Re: Bosh and lucas injectors

Post by Mothman » Sun Dec 14, 2014 8:52 pm

I reccon its easy, one is Bosch and one is Lucas. What more do you need to know?

Andy

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Re: Bosh and lucas injectors

Post by Thread Bear » Mon Dec 15, 2014 12:52 am

Crush the sealing ring to fit. Or is one a cone threaded insert.
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pwykes
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Posts: 43
Joined: Mon May 21, 2012 6:35 pm

Re: Bosh and lucas injectors

Post by pwykes » Mon Dec 15, 2014 8:31 am

Well the way I see it the torque setting of any particular device will depend on four things--
1- the materials involved.
2- the type of thread.
3- the length of thread.
3- the overhaul contact area.
Being that the cylinder head is made of the softest material surely it is the manufacturer which would set the torque setting to avoid stripping the threads. Tinkley might be able to answer this one.