Posted By: 1_WILD_RT
Cam Break-in How much Lighter on the Springs?? - 04/24/09 03:48 AM
As the title states, what kind of pressure do you use for breaking in a new cam? I'll be running a Conventional Flat Tappet with EDM'ed Solid Lifters... Thanks
Posted By: rebel
Re: Cam Break-in How much Lighter on the Springs?? - 04/24/09 03:59 AM
if your springs are doubles, then remove the inner spring & you should be right. apply lots of break in paste NOT that red goo comp cams supplies.
Posted By: Quicksilver440
Re: Cam Break-in How much Lighter on the Springs?? - 04/24/09 04:01 AM
120ish/330ish single springs....is what I used.
Posted By: Alan Warman
Re: Cam Break-in How much Lighter on the Springs?? - 04/24/09 04:02 AM
On are stocker the break in springs are 100lbs on the seat.After it is broke in and we change the springs.The seat pressure is 170 to 180 and over the nose is about360.This is with a stock lift Hyd cam.
Posted By: Cab_Burge
Re: Cam Break-in How much Lighter on the Springs?? - 04/24/09 06:20 AM
[quoteI'm thinking I might fire it on the dyno so I can load the rings some while the cam is breaking in...
Posted By: CompWedgeEngines
Re: Cam Break-in How much Lighter on the Springs?? - 04/25/09 02:10 PM
I also like 100# to break in solids. You arent worried about anything with breaking in the cam as far as lift, bind etc...you simpy wont be turning it that high like Jim says. The other thing to do, is mark the tops of the lifters, turn engine over by hand first, make sure they are rotating before you do anything else. If so, your 95% there anyhow, go with a 100ish # spring,all will be fine.
Posted By: 1_WILD_RT
Re: Cam Break-in How much Lighter on the Springs?? - 04/27/09 06:35 AM
Thanks everyone for your replys! I think I'll measure up my old stock non HP springs..
If you can get 100 lbs on the seat and 250 to 275 open that should work well, remember to make sure the motor starts instantly and gets rev to 1500 RPM plus to 2500 RPM for at leats 20 minutes