Camshaft Timing

[AussiXS11G]

Well now.....
any of you blokes have these "tight plugs" fitted?
They would have the effect of keeping the cam bearings under pressure - sounds good
can't see how they would affect wear on the lobes tho -

[excess.11]

ITEM 3 shows plugs in end of camshaft.

[Jonesy :-)]

Aint no plugs In there ol mate,
unless he's thinking the half moon seals are plugs that hold oil in for the cams to run in an oil bath?



The wording in tighes reply was very " Ï ain't doing anything to help, not my fault, its all about you"

What did you decide to do with your XS 1100 camshafts?
I do not recall you contacting us.
The only thing that I would make sure you do ,
Is that when you repair the camshafts,
make sure you put the oil Gallery plugs back in the ends of the camshafts this time.
Generally our camshafts do well over 20,000 Km, with no issues at all in road bike.
-----------------------------------------------------------------------------------------------------------------
Don't know about you but they should last every bit as long as the OEM cam not a mere 20,000km's.

Bryan, its not even my problem but I feel like giving him a prostate examination with the dead cams

[petejw1966]

Thx Ed
still no "oil gallery plugs" there.....
I think he is having a lend of me.....

Ive got no idea either bryan,
but if you do find out
id be interested in knowing too.

[AussiXS11G]

Thx Ed
still no "oil gallery plugs" there.....
I think he is having a lend of me.....

[XSIIE]

Bryan,

try here

http://www.nwvcp.com/pages/OemParts#/Yamaha/XS1100E_-_1978/CAMSHAFT-CHAIN_TENSION/XS1100E_(1978_MOTORCYCLE)/CAMSHAFT-CHAIN_TENSION_(XS1100E_-_1978)

Eddy

[AussiXS11G]

Thx fellows.....No response from Ivan Tighe as yet - everyone I have shown the pics to say they are not terribly surprised.....
the stock 78's are going in tonight....

[Eveready1100]

Found the thread, Bryan! - CLICK

Or to be precise-

inlet

78e       lift    duration        open           close           area

           .002     440.8      215.8 btdc      45.0 abdc     30.30
           .020     263.7      129.4 btdc      45.6 bbdc     29.65
           .050     241.1      118.3 btdc      57.2 bbdc     29.27
           .250     133.3      64.4  btdc      111.1 bbdc    20.94
           .300     92.5       43.9  btdc      131.5 bbdc    15.30

           peak lift- .346
 
           peak open acc - .000745
           peak nose acc - .000187
           peak close acc - .000718
           lift@ tdc - .3463

exhaust

78e        lift      duration      open             close         area

           .002      438.9       41.1 bbdc      217.8 atdc    28.66
           .020      263.3       45.7 abdc      129.0 atdc    28.01
           .050      240.2       57.2 abdc      117.4 atdc    27.63
           .250      122.6       116.0 abdc     58.6  atdc    18.44
           .300      72.2        141.3 abdc     33.5  atdc    11.46

           peak lift - .326

           peak open acc - .000699
           peak nose acc - .000172
           peak close acc - .000690
           lift@ tdc - .3263



inlet

80sg      lift       duration      open            close         area

           .002       423.4         217.7 btdc   25.7 abdc    28.44
           .020       250.8         124.7 btdc   53.8 bbdc    27.82
           .050       229.2         113.7 btdc   64.5 bbdc    27.46
           .250       123.7         60.9 btdc    117.3 bbdc   19.36
           .300       84.7          41.50btdc    136.8 bbdc   13.97

           peak lift - .345
           
           peak open acc - .000767
           peak nose acc - .000216
           peak close acc - .000770
           lift@ tdc - .3448


exhaust

80sg        lift        duration        open          close              area

           .002        417.1           24.3 bbdc    212.7 atdc    28.32
           .020        250.5           53.7 abdc    124.2 atdc    27.58
           .050        228.8           64.4 abdc    113.2 atdc    27.38
           .250        123.1           117.2 abdc   60.4  atdc    19.24
           .300        84.2            136.8 abdc   41.0  atdc    13.86

           peak lift - .344

           peak open acc - .000736
           peak nose acc - .000217
           peak close acc - .000741
           lift@ tdc - .3439

[pgnz]

woo hoo,  I'd be flipping those cams straight back at 'em and demanding answers and bundles of cash hehe,  there's a page of cam specs 78 & 80 cams,  shows the lift at 0.50 and heaps of other stuff, on this site and uk site, posted ages ago,  assume still sitting somewhere.  78 cams you throw in as normal,  dots lined up on cams,  all good

[excess.11]

Bryan.............how many kms have you had those in for?
Have you contacted Tighe Engineering and shown them pics and kms travelled........they may come to the party with some help of sorts ........if their product failed before it was due.

[AussiXS11G]

hey fellows - My allegedly shit hot Tighe camshafts are knaffed......



So, I have a pair of stock 1978 camshafts that I will fit in the short term....but, I am looking for some cam timing info
so that we can dial them to best effect.

the info I seek is at 50thou lift for both IN and EX
open
close
total