DIR Return Create A Forum - Home
---------------------------------------------------------
Old Leafsprung Land Rovers
HTML https://ollr.createaforum.com
---------------------------------------------------------
*****************************************************
DIR Return to: Members' Motors
*****************************************************
#Post#: 40673--------------------------------------------------
Re: 88" Rally Car story updated
By: Jackual Date: October 24, 2012, 12:37 am
---------------------------------------------------------
That was a real good read that :thumbs:
Awesome stuff 8)
#Post#: 40681--------------------------------------------------
Re: 88" Rally Car story updated
By: prof-pat-pending Date: October 24, 2012, 4:40 am
---------------------------------------------------------
excellent write up as ever :smile1 :smile1 :smile1
#Post#: 40860--------------------------------------------------
Re: 88" Rally Car story updated
By: Dengieboy Date: October 26, 2012, 2:54 pm
---------------------------------------------------------
Agreed, great write up as usual Phil :thumbs: glad to hear
everything went well with your concerns over the engine. Look
forward to your write up's from the winter rebuild ;-)
#Post#: 40948--------------------------------------------------
Re: 88" Rally Car story updated
By: Landyphil Date: October 28, 2012, 12:32 pm
---------------------------------------------------------
Question is...which winter! :-\
#Post#: 41503--------------------------------------------------
Re: 88" Rally Car story updated
By: NiteMare Date: November 5, 2012, 12:55 am
---------------------------------------------------------
i dunno if you've seen this thread Phil but there "may" be a
little more history here
HTML http://www.lpgforum.co.uk/viewtopic.php?f=32&t=5959
#Post#: 45185--------------------------------------------------
Re: 88" Rally Car story updated
By: Landyphil Date: December 15, 2012, 9:26 am
---------------------------------------------------------
Not a great update here.
Rebuilt rear hub which had somehow crapped a rear oil seal but
must have only done it in the last few miles so bearing saved.
:-?
Compression test with oil in the bores showed no improvement but
oil appeared in the inlet manifold! *help*
Knowing at least that the valves were passing and that was the
source of the compression lost off came the head and valves were
dropped.
[IMG]
HTML http://i121.photobucket.com/albums/o208/landyphil/Series%203%20Rally/IMG_2635_zps3b2b0855.jpg[/img]
Bollocks!
[IMG]
HTML http://i121.photobucket.com/albums/o208/landyphil/Series%203%20Rally/IMG_2638_zps46b7bb75.jpg[/img]
Yup it's all looking poo and that's one of the better inlet
seats!
8 new valves ordered (and some optimism) combined with new
springs. Head runs double springs and a comparison of new main
springs and old ones showed the old ones were both softer and
ever so slightly shorter.
So set to lapping it on. Pot 1 and 4 took no time at all and
went just fine.
[IMG]
HTML http://i121.photobucket.com/albums/o208/landyphil/Series%203%20Rally/IMG_2639_zpsbe16eecd.jpg[/img]
(Pot 1 shown on the right)
Cylinder 2 and 3.......didn't look good. Seats slightly more
pitted and would not lap well. Eventually though a clear ring
was formed on all valve seats.
Today was the day of reckoning.
Cold cranking Pot 1 to 3 145 to 150psi........ :-\ OK but not
great given how much head isn't there.
Pot 4 which looked one of the better ones you could hear leaking
the charge out with obvious low compression.
:2mo5pow:
Confirmed that there was nothing odd going on rocker/cam wise by
backing the tappets right off so the valves were DEFINATELY
fully closed under the compression stroke.
Not happy!
Either it's put another normal head on should one come up at the
right price or re seat the existing head....for the second time
in it's life. Not sure how that would go!
Anyone want to buy a racing series 3? :banghead
#Post#: 46400--------------------------------------------------
Re: 88" Rally Car story updated
By: philbert Date: December 29, 2012, 2:25 pm
---------------------------------------------------------
"Anyone want to buy a racing series 3?"
you cant sell it.
Im half way to doing the same thing with a 2a and have had such
a bloody laugh along the way.
I have had days when i want to set fire to the motor but like
you point out at events it makes people laugh so much that makes
it alright.
I upset a lot of old tweedies at the last hillclimb i attended
setting faster times than some of the prepared mgb's.
Thats what keeps me going!
Dont sell you will miss it :banghead
#Post#: 46404--------------------------------------------------
Re: 88" Rally Car story updated
By: Landyphil Date: December 29, 2012, 2:47 pm
---------------------------------------------------------
Don't worry it's not going anywhere. (Literally...took the head
back off this morning)
Now then hillclimbing.....Having just got the full fireproof
Stig outfit for xmas this is something I quite fancy doing.
Beating cars at rallying I can see but doing it
hillclimbing...I'm not going to get up those Barbon Manor or
Harewood straights anywhere near quck enough to be in with a
shout. Still want to do it though. What engine are you running?
#Post#: 46751--------------------------------------------------
Re: 88" Rally Car story updated
By: Landyphil Date: January 1, 2013, 11:39 am
---------------------------------------------------------
Thought I'd start 2013 on a positive note so this morning
tootled into the garage and inspected the "racing" head as I
wanted to know what made cylinder 4 compression go down. 99%
sure it was valves not seating despite more lapping that a
spoilered Corsa in Doncaster so took the valves back out.
This was the scene: Looked pretty good!
[IMG]
HTML http://i121.photobucket.com/albums/o208/landyphil/IMG_2641_zps707084f7.jpg[/img]
I also had the chance to compare the standard head that
Dengieboy of this shire so kindly donated to the cause. As well
as the fact that this head is 4mm thinner than the standard 7:1
head it doesn't really come out in the photos but the standard
heads seem to have a "step" in the head where the valves seats
sit.
The inlets on this one are as smooth as a cashmere codpiece all
the way to the valves themselves with quite a bit more valve
guide tube showing over standard. Quite a porting job!
On the exhaust ports there appears to be about 10mm more valve
guide tube showing and once again it's all been smoothed and
ported (as well as hardened valve seats for unleaded/LPG).
The more I looked the more I couldn't work out why pot 4 was
dud. It also hit home how well done this head compared to a
standard head. Roland Marlow from ACR had supplied the bits but
the head was made by a bloke called Mark Ibbotson I've been lead
to believe. Who last time I heard was in Australia!?!
Decided a sure fire way to test it was to put the valves back in
and fill all 8 ports with petrol. In theory a good valve seat
would never let petrol out.
Low and behold all ports in cylinder 1,2 and 3 were totally
petrol tight.
Inlet valve on cylinder 4 started slowly weeping but exhaust
valve number 4 piddled it out about as fast I poured it in even
though the seat and valve faces looked spot on!
Quick bit of lapping work (just a few mins) and the exhaust
valve was absolutely petrol tight. Spot on!
Gave inlet valve the same treatment refitted it and dropped some
petrol back in.....
[IMG]
HTML http://i121.photobucket.com/albums/o208/landyphil/IMG_2643_zps9bd5c630.jpg[/img]
Bollocks!
[IMG]
HTML http://i121.photobucket.com/albums/o208/landyphil/IMG_2644_zps0e896acb.jpg[/img]
Back out the valve came and gave it a lot of lapping, and them
some more for good measure.
Re assembled, in went the petrol and it seemed petrol tight.
Left it for an hour or so like the others and this was all that
could be seen (Apologies for the poor photo):
Bit of moisture around the edge, as good as it's going to get
and hopefully as the pressure forces are on the valve face not
the back.
[IMG]
HTML http://i121.photobucket.com/albums/o208/landyphil/IMG_2645_zpsebf9446a.jpg[/img]
Going to give this fancy head another chance.
Will see what sort of figures it makes in a few days hopefully.
Incidently the copper traces that can be seen between pot 3 and
4 was the traces of the copper head gasket that been decimated
and ignored by the bloke who owned it between Adrian and myself.
Head's straight as a die but the copper remains in the machining
marks.
#Post#: 46755--------------------------------------------------
Re: 88" Rally Car story updated
By: les ward Date: January 1, 2013, 12:08 pm
---------------------------------------------------------
wow what a read the history of the old girl is great and still
be abused is amazing
*****************************************************
DIR Previous Page
DIR Next Page