To any of you guys (plus girls) who are modifying aj26 - 34 engines, as I have done.
my last component purchased was camshafts - added 14 degrees as well as increased the lift to 10.5mm, which gave me spring bind --- OOH norty


No problems - cant be that hard to hunt down a set of springs - WRONG


If anyone is interested your standard springs are barely adequate to do what's asked of them in standard alication, inadequate is a better term.
Once you add another 10PSI boost you will need an extra 20Lb seated pressure (originally 45Lb at 32.5mm) -(125Lb at open) it was a new spring I tested
I hunted the planet - spent 12 weeks all through America and Europe.
Crane - Manley - Piper - US$2,300.00 and wouldn't fit
The answer is in Australia
Performance Spring


Allen is the Guru's name - - He has sets available very soon. (I am in no way connected with the company - just a happy customer)
I mention this because a lot of you are modifying engines - if you have your heads off for any reason - it would be money extremely well spent, saves lots of heart ache - time and money later.
Hope this helps
Cheers

 

Here one set from the small batch.

 

There's a user on here called Springman. He has offered a guy on the XJS forum to check all his spring stock. If none available he will quote for manufacturing springs.

He's in Yatal Queensland. Australia. Is it the same person ?

 

Where did you get the cams from dc4prez ?

 

Yes.

 

Cams made by Tighe Engineering - basically an Extra 14 degrees and 10.5 lift - I supplied the specs -
website - Tighe Cams, brisbane, camshafts, automotive, Motorcycle, diesel, semi finished
when he made these for me he also made a spare set for stock.
It is the only foundry in Australia who forge camshafts.
Mine have 7/16" thread instead of 12mm - don't know why - Local Caterpillar dealer had 7/16"NF socket head cap screws in stock.
Price for cams was US1,500.00
the other question regarding springs - if it is in Australia it will be Alan from Performance Springs Yatala Performance Spring - recommended


d:\work files\cam profiles\OHCDA\B1795C.CPP
LIFT DUR. OPEN CLOSE AREA
Lobe I1 ----- ------ ----------- ----------- ------
Centerline 106.00 ATDC 0.004 263.62 25.36 BTDC 58.26 ABDC 30.73
Runout 0.00070 0.006 256.80 22.22 BTDC 54.59 ABDC 30.71
Lift @ TDC 0.0791 0.008 252.64 20.30 BTDC 52.34 ABDC 30.70
Valve Lash 0.0100 0.010 249.82 18.92 BTDC 50.90 ABDC 30.69
Rocker Ratio 1.00 0.020 240.81 14.52 BTDC 46.29 ABDC 30.62
Lobe Separation 109.0 0.040 229.62 8.91 BTDC 40.71 ABDC 30.45
0.050 224.88 6.54 BTDC 38.34 ABDC 30.35
0.080 211.42 0.20 ATDC 31.62 ABDC 29.91
0.200 158.01 26.94 ATDC 4.95 ABDC 26.17
0.300 109.79 51.07 ATDC 19.14 BBDC 20.10
0.350 77.14 67.42 ATDC 35.44 BBDC 14.77
0.40812 --- PEAK CAM LIFT ---
0.39812 --- PEAK VALVE LIFT ---

d:\work files\cam profiles\OHCDA\B1795C.CPP
LIFT DUR. OPEN CLOSE AREA
Lobe E1 ----- ------ ----------- ----------- ------
Centerline 112.00 BTDC 0.004 258.88 61.71 BBDC 17.17 ATDC 30.66
Runout 0.00060 0.006 254.28 59.34 BBDC 14.94 ATDC 30.65
Lift @ TDC 0.0513 0.008 251.03 57.67 BBDC 13.36 ATDC 30.64
Valve Lash 0.0120 0.010 248.54 56.43 BBDC 12.11 ATDC 30.63
Rocker Ratio 1.00 0.020 240.33 52.29 BBDC 8.05 ATDC 30.56
Lobe Separation 109.0 0.040 229.43 46.80 BBDC 2.64 ATDC 30.37
0.050 224.72 44.42 BBDC 0.30 ATDC 30.26
0.080 211.28 37.69 BBDC 6.41 BTDC 29.79
0.200 157.92 11.00 BBDC 33.07 BTDC 25.93
0.300 109.59 13.18 ABDC 57.24 BTDC 19.74
0.350 76.83 29.56 ABDC 73.61 BTDC 14.35
0.40971 --- PEAK CAM LIFT ---