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post #1 of 2 (permalink) Old 08-17-05, 06:02 PM
willie@macleod-group.com
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V8 Questions

Hi,

V8 gurus (Badger+others!) I have a 4.6(bitsa engine) which I've just
taken the head off, it's got a 1998 date code on it. It's got 10 bolts
holding the head on in two rows - are these stretch bolts at this age?

Valve stem oil seals - how are these meant to come off - is there a
tool/trick?

Does anyone have an electronic manual that covers 4.6 V8 engines, good
old http://www.landrover.ee/est/varia/downloads/cars.htm has failed me
on this one. I'm particulary interested in torque settings and the
engine tuning data sections.

Thanks in advance

Regards

William MacLeod

 
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post #2 of 2 (permalink) Old 08-18-05, 03:01 AM
Badger
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Re: V8 Questions


<willie@macleod-group.com> wrote in message
news:1124321202.961689.315590@z14g2000cwz.googlegroups.com...
> Hi,
>
> V8 gurus (Badger+others!) I have a 4.6(bitsa engine) which I've just
> taken the head off, it's got a 1998 date code on it. It's got 10 bolts
> holding the head on in two rows - are these stretch bolts at this age?


Yes, definitely. Don't re-use them under any circumstances. The head gasket
(composite, of course!) clamping force on the 4.6 is, I feel, marginal at
the best of times (with std bolts) and wherever possible I always replace
the bolts with an ARP stud kit. Replaced lots of blown std gaskets on the
4.6, but never had one fail with a stud kit. Just remember to use some
anti-sieze on them for future ease of removal!!

> Valve stem oil seals - how are these meant to come off - is there a
> tool/trick?


No special tool, just pry them off using pliers and a "twist". Good seals,
although I tend not to fit them on the exhaust valves if it's a tuned
engine, to allow a bit of extra lube down the "hot" guide to aid guide and
stem cooling and lifespan.

> Does anyone have an electronic manual that covers 4.6 V8 engines, good
> old http://www.landrover.ee/est/varia/downloads/cars.htm has failed me
> on this one. I'm particulary interested in torque settings and the
> engine tuning data sections.


All torque figures are the same as earlier versions (4.0, x-bolted 3.9),
engine tuning will almost definitely be a "suck it and see" unless you are
using the complete std efi setup including lambda probes. If you're planning
on running carbs Wullie, may I suggest the Weber edlebrock 500 conversion as
working well on the 4.6, at all attitudes! Tom Gilmour has this combination
in his 90, "ping" him for further info on jetting etc. He has a Viper
Hurricane cam installed, which is a really nice cam with the 4.6. All data
is in Rave, easily available via the naughty disc copiers on ebay etc.
Badger.


 
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