was looking at these,click on holden then hydraulic,was interested in the HDT GRINDS,probably for the webbered carbed cars i,m guessing
thanks dane.
Edited by 73BATHXU1HTBATH350, 13 June 2011 - 07:12 PM.
xu-1 Camshafts
Started by
Bazza
, Dec 13 2007 01:18 PM
107 replies to this topic
#76
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Posted 13 June 2011 - 07:10 PM
http://www.tighecams.com.au/cars.htm
was looking at these,click on holden then hydraulic,was interested in the HDT GRINDS,probably for the webbered carbed cars i,m guessing
thanks dane.
was looking at these,click on holden then hydraulic,was interested in the HDT GRINDS,probably for the webbered carbed cars i,m guessing
thanks dane.
#77
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Posted 15 June 2011 - 05:38 PM
Hi all
I am finding this all very interesting.
Am I correct in assuming that the '72 Bath cam referred to in the Antoniou book as the HX is actually the XJ and the HX/XH is the standard cam dating from early '72?
We have a couple of examples of HX/XH cams being fitted to '73 Bathurst cars - I find this very surprising since according to the Antoniou book - the '72 Bathurst cam became the standard cam thereafter.
Maybe the truth is somewhere in between? and oh, don't believe everything you read.
Bazza
YOU ARE RIGHT BAZZA
i made a mistake when i measured the origional cam from my 73 bathurst xu1 I DID NOT ALLOWED FOR WEAR OF THE LOB,
therefore the cam is a 391 with 456" lift part no 9929247 and is stamped hx on the front off cam,C on rear of cam looks like wade nicked name it xj
no one has seen a cam stamped xj looks like the cams were all stamped hx,
i have a clive cam no 190 in my car now which is the same as the 72 bathurst cam or my origional cam
cheers vin
#78
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Posted 15 June 2011 - 05:45 PM
the hdt grinds work very well craig, good enough to send a full weight fc to 13.0 qtrs
#79
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Posted 15 June 2011 - 06:39 PM
the hdt grinds work very well craig, good enough to send a full weight fc to 13.0 qtrs
thats pritty impressive for a fc,they arn,t the most airodynamic car either.
hi vin,
how does your cam sound,and perform.
i would have thought the 72 cam,wouldn,t match the new dynamics of the later engine,bigger valve,extractors,lighter fly wheel etc.
i,m hoping someone has more info for the big valve engine ,and how much more can be gained, i,ve read that the 73 xu1 track car had some impressive HP figres,i know they had those huge 58mm webbers with one throat blocked.
i,ve emailed ivan tighe,and havn,t received any help yet,i,ll ring clive cams on my day off and see what he has to say.
#80
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Posted 15 June 2011 - 09:25 PM
I currently have a 373 cam and my dizzy is curved to 16deg advanced. Is this the correct setting?
Thanks Daz
Thanks Daz
#81
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Posted 16 June 2011 - 07:03 AM
Hi Vin,
I found my card with the information on it,was done by bert jones & son at parramatta in 1994.
Its a 72 bathurst cam shaft,i had it reground by bert,its the original gmh camshaft so its 39 years old.
Its a 38/78 hydraulic cam:Valve lift 400 Degrees duration is 296.
Exhaust .277
Inlet .270
50 Thou.
And the timming is still factory 10 degrees.
I had a new alloy timming gear replaced back in 2008,as seen in my earlier posts.
I still have my original alloy timming gear and it genuine gmh,2814355.
Cheers John.
I found my card with the information on it,was done by bert jones & son at parramatta in 1994.
Its a 72 bathurst cam shaft,i had it reground by bert,its the original gmh camshaft so its 39 years old.
Its a 38/78 hydraulic cam:Valve lift 400 Degrees duration is 296.
Exhaust .277
Inlet .270
50 Thou.
And the timming is still factory 10 degrees.
I had a new alloy timming gear replaced back in 2008,as seen in my earlier posts.
I still have my original alloy timming gear and it genuine gmh,2814355.
Cheers John.
#82
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Posted 16 June 2011 - 04:23 PM
hi graig
my cam sounds good and goes good when you get over 4000 revs but the later cams would be better,
if i was young like you i would get a good engine and hot it up then stamp your eng no on it
hi john
i can not work your cam out some one on here might be able to
vin
my cam sounds good and goes good when you get over 4000 revs but the later cams would be better,
if i was young like you i would get a good engine and hot it up then stamp your eng no on it
hi john
i can not work your cam out some one on here might be able to
vin
#83
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Posted 16 June 2011 - 04:38 PM
hi vin,how they hanging mate.
that sounds a bit of a wild thing to do,your a character,
we know who is good at that don,t we.
i think i might get the same cam as you,i talked to clive today and he is a great guy,we had a few laughs together,he suggested i pull a plug lead to get it to sound lumpy,i was saying it sounded to smooth for a xu-1,but i havn,t heard one for a long time either.
that sounds a bit of a wild thing to do,your a character,
we know who is good at that don,t we.
i think i might get the same cam as you,i talked to clive today and he is a great guy,we had a few laughs together,he suggested i pull a plug lead to get it to sound lumpy,i was saying it sounded to smooth for a xu-1,but i havn,t heard one for a long time either.
#84
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Posted 16 June 2011 - 08:10 PM
Has anyone actually found an XJ spec cam in a production car? Clive of Clive Cams tells me he ground around 200 of them while working for Wades but where did they all go? It seems some have turned up in former privateer race cars which indicates GMP&A sold them. The Holden spec change for 9/2E Aug/Sept 73 cars does not show a camshaft because it was free, the Engineering Change Summary does not have a new part No indicating the XH was still to be used. The parts book is apparently silent on the XJ.
Thoughts appreciated.
Thoughts appreciated.
#85
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Posted 17 June 2011 - 01:52 AM
Has anyone actually found an XJ spec cam in a production car? Clive of Clive Cams tells me he ground around 200 of them while working for Wades but where did they all go? It seems some have turned up in former privateer race cars which indicates GMP&A sold them. The Holden spec change for 9/2E Aug/Sept 73 cars does not show a camshaft because it was free, the Engineering Change Summary does not have a new part No indicating the XH was still to be used. The parts book is apparently silent on the XJ.
Thoughts appreciated.
G/day Norm
I've never seen an XJ camshaft but they do exist, well, XU-1 camshaft Pt No. 9929247 does.
These camshafts were homologated for the 1972 Bathurst car.
When the February 1972 edition LJ parts catalogue M37127 was printed the 9929247 cam didn't exist, however Holden Dealers were notified via October 1972 NASCO News to ammend their parts catalogue to include the newly developed camshaft Pt No. 9929247 and new (lightened) flywheel assy Pt No.9929634.
It is possible that by the time the updated June 1975 edition LJ catalogue M37608 was printed, camshaft 9929247 was already NLA so it was not included.
I think it would be fair to say the 1973 Bathurst engines received the same camshaft as all earlier 1973 XU-1's and post Bathurst '72 production XU-1's.
The engineering bulletin only refers to parts that are different to other XU-1engines, except for the conrod big end bolts and nuts which are noted as being existing parts.
Cheers
Dave.
Edited by S pack, 17 June 2011 - 01:53 AM.
#87
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Posted 17 June 2011 - 09:26 PM
i was wondering if someone has any knowledge of this timing gear,maybe junk but someone might know.
it came with my car, i was going to chuck it,but when i rebiult my engine about 18 years ago i noticed these small date stampings on other engine components.
i,ve shown people over the years but no one has ever said they know,i,m going to keep it anyway.
it came with my car, i was going to chuck it,but when i rebiult my engine about 18 years ago i noticed these small date stampings on other engine components.
i,ve shown people over the years but no one has ever said they know,i,m going to keep it anyway.
#88
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Posted 17 June 2011 - 09:43 PM
Like you ever chuck anything out.....you're as bad as me!.....Lifetime member of the Early Holden Parts Bower Bird Association!!
I"ve got one of those,too.Ill have to check for datestamps.
I"ve got one of those,too.Ill have to check for datestamps.
#89
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Posted 17 June 2011 - 10:50 PM
i was wondering if someone has any knowledge of this timing gear,maybe junk but someone might know.
it came with my car, i was going to chuck it,but when i rebiult my engine about 18 years ago i noticed these small date stampings on other engine components.
i,ve shown people over the years but no one has ever said they know,i,m going to keep it anyway.
Hi Craig
One genuine original LJ XU1 camshaft gear Pt No. 2822456. Looks like it was made on 30/08/1973.
#90
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Posted 18 June 2011 - 08:25 AM
thanks dave,
you are a great help,i didn,t know what it was going to be.
then its not junk,i,ve got matching crank gear,they were wired together.
you are a great help,i didn,t know what it was going to be.
then its not junk,i,ve got matching crank gear,they were wired together.
#91
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Posted 18 June 2011 - 03:57 PM
it would be good if you had the 73 bath camshaft
to see if it was stamped the same as mine, i have not got the cam gear
to see if it was stamped the same as mine, i have not got the cam gear
#92
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Posted 18 June 2011 - 06:10 PM
it would be good if you had the 73 bath camshaft
to see if it was stamped the same as mine, i have not got the cam gear
if i get keen, i,m going to see whats in the engine,i just used what was in there,i,m guessing its the right cam,as the engine had never had the head taken off and was still oridginal bore with no lip.
#93
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Posted 18 June 2011 - 08:10 PM
Hi Craig,
Iv'e still got my original alloy gear the same as that one,but different part numbers thats all.
Cheers John.
Iv'e still got my original alloy gear the same as that one,but different part numbers thats all.
Cheers John.
#94
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Posted 18 June 2011 - 08:41 PM
Hi Craig,
Iv'e still got my original alloy gear the same as that one,but different part numbers thats all.
Cheers John.
Hi John
You have probably got the LC XU1 cam gear Pt No. 2814895.
There is a small difference between the LC & LJ XU1 cam gears.
#95
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Posted 18 June 2011 - 09:18 PM
Hi Dave,
My gear says 2814355,its ck part number,i checked with another fourm member,
and also the cam is too,but down the bottom it says 1 574,i have a after market block,
original 72 crank,73 block,and 73 rods.mayby the original camshaft let go when the rod,
let go,but was under warranty when it happened,and also was a recall too.
Cheers John.
My gear says 2814355,its ck part number,i checked with another fourm member,
and also the cam is too,but down the bottom it says 1 574,i have a after market block,
original 72 crank,73 block,and 73 rods.mayby the original camshaft let go when the rod,
let go,but was under warranty when it happened,and also was a recall too.
Cheers John.
#96
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Posted 18 June 2011 - 09:45 PM
Hi Dave,
My gear says 2814355,its ck part number,i checked with another fourm member,
and also the cam is too,but down the bottom it says 1 574,i have a after market block,
original 72 crank,73 block,and 73 rods.mayby the original camshaft let go when the rod,
let go,but was under warranty when it happened,and also was a recall too.
Cheers John.
Thanks John
Interesting, I didn't know there was a 2814355 cam gear for the LC, definitely not listed in my October '71 LC parts catalogue.
Learn something new everyday!
Cheers
Dave.
#97
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Posted 18 June 2011 - 10:37 PM
As has been said, only one cam is listed for road going XU-1's in the green 1975 book, I think you will find all previous LJ XU-1 cams would superseed to this XH number ( Except for the XJ which seems to be the track car cam )
Some rare examples of surplus track cars did get sold as normal deliveries due to being not delivered to a special order, I know of two now, there will be others.
Mike
Some rare examples of surplus track cars did get sold as normal deliveries due to being not delivered to a special order, I know of two now, there will be others.
Mike
#98
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Posted 19 June 2011 - 01:54 PM
Hi Dave,
At the back of the cam shaft just like vins cam,it says JC and 387HH.
Cheers John.
At the back of the cam shaft just like vins cam,it says JC and 387HH.
Cheers John.
#99
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Posted 19 June 2011 - 11:47 PM
Hi Dave,
At the back of the cam shaft just like vins cam,it says JC and 387HH.
Cheers John.
G/day John
My XH cam has C and XU-2 stamped into the rear end.
Cheers
Dave.
#100
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Posted 20 June 2011 - 04:08 PM
Hi Dave,
At the back of the cam shaft just like vins cam,it says JC and 387HH.
Cheers John.
G/day John
My XH cam has C and XU-2 stamped into the rear end.
Cheers
Dave.
dave my xh cam has c stamped into rear end like other 73 bath eng
vin
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