Quick Tech: Proper Valve Spring Set Up

COMP Cams Valve Spring Engineer, Brad Brown, takes us through the basic yet extremely important steps in ensuring you have your valve springs set up properly.

[rd_Millennium_Engineering]

Great Video. I have most certainly picked up a few good pointers and intend to view many more.

[SQUID_Road_Glide]

Phenomenal lesson. Thank you kindly. The more I lean about valve springs the more I loose my confidence for swapping my springs in requirement to my Milwaukee 8 Fueling 508 cam. I found you because although I’m doing a Harley engine build, the parts and concepts are the same.

I decided to leave the porting to the experts. But the shop I’m going with has .625 lift springs on their Pro Street Heads. Will I run into a Valve Spring Float scenario with my 508 lift cam?

Very Respectfully,
Dan “SKWID”
ET1(SS/SW/MTS) US Navy, Ret.

[jasonhlavac]

The video says cut the guide down but shows the spring pocket being cut. .020" is not close enough for me, and on a spring with a higher rate it can be quite a bit. One exception is correcting for a spring that has a bit more pressure at the seat and open height.

[danw]

limit the rpm for 15 minutes for break in. Yet my cam requires 25-30 minutes at 3000 rpm for break in.. Which do i follow for a new build?

[slowazbmwkilla]

Can we discuss about your 918 spring and magnum roller rockers ? Them are some crappy parts .

[ErnestoSantana-kqim]

Hello guys, I would love to know if you can tell me what's the max lift these springs can handle, here are the springs specs: seat load 136 lbs @ 1.800'', open 412 lbs @ 1.170'', spring rate 438 lbs/in and coil bind 1.125'', thanks in advance

[GalpaoV]

hello do you know the part number spring valves for dodge dakota 5.2 with compcams 20-746-9??? thanks

[Motorcitypower]

When are you going to start to remanufacture the Rimac spring tester ? I see that is the one that you use even though there no longer made ? The market is begging for these !!!

[mechanic]

When you say plus or minus .020 that you have .020 spec range? Lets say your valve springs are 1.750 installed height and you get some at 1.737 or 1.742 is that still in spec? Im being told no

[L-qf]

What's the reason behind valve spring break-in?

[ravikannan]

Anyone please
I replaced my street bike (sohc)with 10mm lift cam instead of 5mm lift. But the results are poor than the stock. Upgrade big carbs too and increased the compression ratio also.
please support...

[donboser]

If I am adding a new roller rocker cam do I break the cam in for 30 minutes at 2000 rpm or break the valve springs in first on a normal heat cycle?

[martinmatuz]

Is it necessary to replace the rod in the center of thee Valve spring?? If so may you do a video on how to install them.

[GMZee]

Nobody performs these steps on youtube when installing their springs