Badger wrote:
> "Andrew Cleland" <ajc219@[EMAIL PROTECTED]
> wrote in message
> news:g4vist$881$1@[EMAIL PROTECTED]
>> Andrew Cleland wrote:
>>> Badger wrote:
>>>> "AndyC" <cleland72@[EMAIL PROTECTED]
> wrote in message
>>>>
news:7ed23c66-e1e2-44f1-9f90-445f9a340eb5@[EMAIL PROTECTED]
>>>> On Jul 7, 10:39 am, "GbH" <Geoff_Hanning...@[EMAIL PROTECTED]
> wrote:
>>>>> AndyC wrote:
>>>>>> I've just got a new camshaft for the 3.9i I'm rebuilding for the
110.
>>>>>> It's one with the step machined into the end by the timing gears to
>>>>>> allow it to work with the retaining plate fitted to the later
engines.
>>>>>> I know the interim engines (gear driven oil pump and dizzy) had a
>>>>>> full- circular retaining plate and then on the 4.0 and 4.6 LR moved
>>>>>> to a semi-circular plate. Does anyone know if the critical
dimensions
>>>>>> are the same for both types of plate (i.e. will either work with my
>>>>>> cam)? The semi-circular ones seem easy enough to get hold-off, the
>>>>>> interim ones less so - in-fact I can't even find a part number for
>>>>>> them.
>>>>>> I'm assuming it's a good idea to fit one - it's just a case of
>>>>>> drilling and tapping a couple of holes in the block (avoiding oil
>>>>>> ways) and I know the original method of location, relying on a
taper
>>>>>> on the cams reacting against the lifters, isn't considered a
>>>>>> particularly great bit of engineering.
>>>>>> Cheers,
>>>>>> Andy.
>>>>> Ask Badger, I'm sure he will know.
>>>>>
>>>>> --
>>>>> Wisdom and experience come with age, they say, but I wish I could
>>>>> remember the darn question
>>>> Yes, hopefully he'll be along with his vast wisdom.
>>>>
>>>> Digging a bit further, it looks like the thrust plates are different,
>>>> with the 4.0/4.6 having a smaller diameter. As my cam was sold as for
>>>> a 3.9, it looks like I'll need the larger, interim, thrust plate -
>>>> anyone know its part number?
>>>>
>>>>
>>>> The plates are indeed different and you need the right one. Sorry, I
>>>> don't have the part number to hand, but be carefull when drilling the
>>>> holes as they are offset slightly below the cam centreline to give
>>>> clearance to the oil galleries.
>>>> Badger.
>>>>
>>> Thanks Badger. I'll keep digging for a part number and exercise care
with
>>> my drill!
>>>
>>> Andrew.
>> Just to follow-up on my own post, I think I have the correct part
numbers
>> now. If anyone else needs them, they are:
>>
>> Thrust Plate, Camshaft. Interim, 3.9, - ERR5926
>>
>> Thrust Plate, Camshaft. Late, 4.0/4.6 - ERR2609
>
> Forgot to mention - be careful what thickness of bolt heads you use -
you
> need clearance between the bolt head and cam sprocket, and the standard
> bolts are most likely a UNC thread. The thread, at a glance, looks like
it's
> probably metric but every other thread in that block is UNC (regardless
of
> bolt head size!) so be careful.
> Badger.
>
>
Thanks Badger. The plate arrived today from Rimmers (pricey @[EMAIL PROTECTED]
£11, but
they're the only people who seem to sell it and it's a genuine part).
It looks like the holes are around M8, but I'll need to measure
properly. There are no holes on the block yet, but assuming M8 is a good
fit, then I have the necessary drills & taps, along with a box of nice
M8 stainless button-head cap screws which should do nicely. I imagine
Loctite is recommended.
AC.
|
