Topic: Need a cam card for a Megacycle 125-75 cam

[gschuld]

Anyone have specs and or recommendations for proper set up.

1025cc
10.5:1 compression
Ported head
29 carbs

Thanks,

George

[Jerry Rxman Griffin aka MuthaF'er]

Well of course. PM your phone number and I will text it to you.

[gschuld]

Thanks man👍

George

[PeWe]

Satanicmechanic.org spec
125-75 (125-70)
lift/dur/LC
IN  .400     262   105   
op/close @0 lash / rec lash
26/56    .005

EX .375      257   104.5
53/24   .005

My timing last year with a 125-75 ( billet cam)
Note! I hade to file cam holders, lobe contact.  I made sure at least 0.25mm clearance.

Ported K2 head 34/28mm valves. 101whp setup on dyno Sept/Oct -2020
Lift In/Ex: 10.0/9.4mm
Open close at 0 lash, 1mm lift:
26/55      dur: 261
55.5/23  dur: 258.5

This year a 392 head 33.5/28.5mm valves.
A little bit later to wish for HP to continue after 9000 rpm
@ 0 lash
IN: 24.5/56.5*
EX: 54/24*

It runs really fine, idle as a stock bike except for it ponds harder due to higher compression.
+195PSI with a cheap tester.
(stock fresh 736 145-150PSI with same tester)

I set valve lash to:
In:  0.1mm
Ex: 0.15mm

[gschuld]

Awesome. 

Thanks Per.

George

[PeWe]

Mike must have timing experiences of this cam for various needs?

It will be very interesting to hear how this history will continue!
Dyno chart in blue (101 whp) with 125-75 last year. In open at 26* 1mm (0.04") lift,  0 lash.