Lancia Motor Club Forum Banner
25 September, 2020, 01:33:11 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Need to contact the Forum Administrator? e-mail forum.admin@lanciamc.co.uk, for Database Administrator e-mail database.admin@lanciamc.co.uk      -      Copy deadline for Viva Lancia is 12th of each month.      -      For Events e-mail events@lanciamc.co.uk      -      To Join the club go to http://www.lanciamc.co.uk/join.htm
 
   Home   Help Search Calendar Register  
Pages: [1]   Go Down
  Print  
Author Topic: Cam identification  (Read 513 times)
0 Members and 1 Guest are viewing this topic.
jus
Member
**
Posts: 24



« on: 10 August, 2020, 11:50:44 AM »

Hi all.
I removed the cam cover from the the Fulvia at the weekend to see what was what in there. I found that 2 inlet and 1 exhaust gaps needed adjustment, but the real reason was to see what cams it had. Can anyone tell me the usual places (if there are any) of where to find the engraved ID information? I have to say, nothing was leaping out when I was rotating the engine to check the rockers.

Also - I noticed that one pair of rockers covering no. 3 and 4 exhaust, could be moved along the rocker shaft (maybe 2mm gap). The other 3 pairs of rockers have spring washers holding them in position, but the pair in question doesn't have. I'm wondering whether I'll find something in the sump.

Thanks for any advice.
Justin.
Logged

1982 Beta Spyder
1969 S1 Fulvia 1.6HF Rallye
1971 Works Fulvia 1.6HF
1972 S2 Fulvia 1.6HF Lusso
1982 037 Rally
nistri
Megaposter
*
Posts: 317


« Reply #1 on: 11 August, 2020, 02:24:04 PM »

The safe mode of cam identification is to take them out and measure the lobe size.
Spring washers should always be there to prevent excessive sliding of the rockers and thus valve problems. It is weird though not unsual to find Fulvias with cams of mixed origin Undecided Andrea
Logged

Andrea Nistri

Ardea S2
Appia S2
Fulvia GTE
Fulvia Sport 1.3 S
Fulvia Montecarlo
Fulvia Coupe 1.3 S
jus
Member
**
Posts: 24



« Reply #2 on: 12 August, 2020, 08:20:47 PM »

The ones that I'm trying to identify are in the works car with engine 14 (chassis 2263). I'll try and get a couple of pics at the weekend showing the cams - and the lack of spring washer between the 2 rockers.

I have a few spare sets of cams which I'd also like to identify. One set has P & T in the casting, and then 159B 3/06 engraved on one end. Does that ring any bells with anyone? I've had a quick search on the net but drawn a blank.

Thanks,
Justin.
Logged

1982 Beta Spyder
1969 S1 Fulvia 1.6HF Rallye
1971 Works Fulvia 1.6HF
1972 S2 Fulvia 1.6HF Lusso
1982 037 Rally
lancialulu
Press Officer
Permanent resident
*****
Posts: 3978



« Reply #3 on: 12 August, 2020, 09:14:18 PM »

P & T I believe is the std 303 cam used in 540 and 740 as well as s2 1300. Var 1016 cams have no idents other than a cast square section ring at the end.
Logged

Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
Charles Frodsham
Senior Member
*****
Posts: 152



« Reply #4 on: 15 August, 2020, 05:27:14 PM »

Hi Jus

Whilst you have the cam cover off, check the oiler nozzle is intact at the bottom of the timing chest. Lots of threads on this.

Charles
Logged
jus
Member
**
Posts: 24



« Reply #5 on: 23 August, 2020, 08:59:47 PM »

Hi Charles. I've had another look, and I do seem to have an oiler nozzle. I've attached a couple of pics showing the cams in-situ and the only mark I can see on them - in case anyone recognises them.






* head1.jpg (345.64 KB, 1114x779 - viewed 10 times.)

* head2.jpg (210.35 KB, 1126x645 - viewed 8 times.)
Logged

1982 Beta Spyder
1969 S1 Fulvia 1.6HF Rallye
1971 Works Fulvia 1.6HF
1972 S2 Fulvia 1.6HF Lusso
1982 037 Rally
jus
Member
**
Posts: 24



« Reply #6 on: 20 September, 2020, 12:24:14 PM »

Just a quick update. I've measured the lobe height of the cams fitted to the S1 (works) car as being 6.5mm. I've got another couple of spare sets. One measures 6.15mm (I guess these are standard?) and the other measures 6.75mm.

I've made a timing disc that fits to the crank pulley - and as the radiator is coming off anyway, I'll be able to access the pulley much more easily. I'd like to have identified these 6.5mm lift cams before checking the cam timing ideally - so if anyone can id them from that measurement - then it would be much appreciated.

Omicron recommend 109 degrees for max lift on both inlet and exhaust - but I think that may be for their own cam design. Does anyone have any advice on what the 1016 should be set to (if that's what they are)?

Thanks,
Justin.
Logged

1982 Beta Spyder
1969 S1 Fulvia 1.6HF Rallye
1971 Works Fulvia 1.6HF
1972 S2 Fulvia 1.6HF Lusso
1982 037 Rally
lancialulu
Press Officer
Permanent resident
*****
Posts: 3978



« Reply #7 on: 20 September, 2020, 02:22:27 PM »

are the lobe widths the same.

my data has std 303/1.6hf/1600 cams as 64mm lift and var 1016 as 6.45mm (not a lot more). dont forget the multiplier of the rocker.. If fitting higher lift chk for piston valve clearance!!
Logged

Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
jus
Member
**
Posts: 24



« Reply #8 on: 21 September, 2020, 09:47:42 PM »

Thanks Tim.

I measured off the top of the follower, so it should be a 1:1 measurement. Is the max lift rotation angle that is recommended for inlet and exhaust, independent of cam type? I was assuming that the lobe profile might vary from cam to cam model, but that they would be centered at the same location on each different type. Is that a fair assumption? Otherwise - I don't feel like I can check or set anything on these cams unless I can positively identify which ones they are. Can anyone advise?
Thanks,
Justin.
Logged

1982 Beta Spyder
1969 S1 Fulvia 1.6HF Rallye
1971 Works Fulvia 1.6HF
1972 S2 Fulvia 1.6HF Lusso
1982 037 Rally
lancialulu
Press Officer
Permanent resident
*****
Posts: 3978



« Reply #9 on: 22 September, 2020, 06:34:47 AM »

Thanks Tim.

I measured off the top of the follower, so it should be a 1:1 measurement. Is the max lift rotation angle that is recommended for inlet and exhaust, independent of cam type? I was assuming that the lobe profile might vary from cam to cam model, but that they would be centered at the same location on each different type. Is that a fair assumption? Otherwise - I don't feel like I can check or set anything on these cams unless I can positively identify which ones they are. Can anyone advise?
Thanks,
Justin.

typo 64mm = 6.40mm.... 109mop is for the std cam. Var and others have higher mop for inlet and lower for ex. By c3deg. These cams are generally symetrical. Bear in mind clearances need to be deducted from lobe measurements.
Logged

Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
Pages: [1]   Go Up
  Print  
 
Jump to:  

Contact the Forum Administrator

LMC Forum copyright © 2007 - 2018 Lancia Motor Club Ltd

Powered by SMF 1.1.20 | SMF © 2006-2011, Simple Machines
Page created in 0.036 seconds with 22 queries.