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.
Sorry to be off topic but does someone know of a way to log back into an Instagram account?? I was dumb lost my account password. I would appreciate any assistance you can offer me.
@Raphael Simon Thanks so much for your reply. I found the site thru google and im waiting for the hacking stuff now. Looks like it's gonna take a while so I will get back to you later with my results.
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.
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
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 88 It's important that all parts mate properly so they will optimally work together and there is a much lesser risk of something breaking. Hope this helps!
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 !!!
Anyone please answer..... 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...
Did you measure piston to valve clearance to see if that amount of lift was possible? you should always check that to make sure valve won't slap the piston with a bigger lift cam
+Don Boser You can just follow the proper break-in procedure foryour camshaft. This will also take care of the valve springs. Then just be sure to let the engine cool down completely before you start it again. Hope this helps! Thank you.
In my experience there isn't much break in needed for a roller cam. Most of the break in stuff pertains to solid lifter cams. I think the mean deal is about getting some surface hardness into the surface of the cam otherwise they tend to eat up the lobe. With roller eliminating most of the friction, I'm not sure you'll need any excessive break in. Just run it, shut it off, let it set like he shows in the vid. If I'm off on any of this feel free to chime in anyone. Good luck on your build.
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.
Great Video. I have most certainly picked up a few good pointers and intend to view many more.
Sorry to be off topic but does someone know of a way to log back into an Instagram account??
I was dumb lost my account password. I would appreciate any assistance you can offer me.
@Leonard Harlan instablaster =)
@Raphael Simon Thanks so much for your reply. I found the site thru google and im waiting for the hacking stuff now.
Looks like it's gonna take a while so I will get back to you later with my results.
@Raphael Simon it did the trick and I actually got access to my account again. I am so happy!
Thanks so much you really help me out :D
@Leonard Harlan Happy to help :)
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.
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?
I was just getting ready to send the same question.
Can we discuss about your 918 spring and magnum roller rockers ? Them are some crappy parts .
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
hello do you know the part number spring valves for dodge dakota 5.2 with compcams 20-746-9??? thanks
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
Thank-you guys.
What's the reason behind valve spring break-in?
+L 88 It's important that all parts mate properly so they will optimally work together and there is a much lesser risk of something breaking. Hope this helps!
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 !!!
Performance Trends
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.
What do you mean the rod in the center of the valve spring? the only thing that is there is the valve stem
All 16 exhaust intake valves is what I meant.
The Rod's valve stems wrap around.
Anyone please answer.....
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...
Did you measure piston to valve clearance to see if that amount of lift was possible? you should always check that to make sure valve won't slap the piston with a bigger lift cam
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?
+Don Boser You can just follow the proper break-in procedure foryour camshaft. This will also take care of the valve springs. Then
just be sure to let the engine cool down completely before you start it again. Hope this helps! Thank you.
What about dual valve springs? Thanks
In my experience there isn't much break in needed for a roller cam. Most of the break in stuff pertains to solid lifter cams. I think the mean deal is about getting some surface hardness into the surface of the cam otherwise they tend to eat up the lobe. With roller eliminating most of the friction, I'm not sure you'll need any excessive break in. Just run it, shut it off, let it set like he shows in the vid. If I'm off on any of this feel free to chime in anyone. Good luck on your build.
would this apply to motorcycles to ?
Ty very helpful
Nobody performs these steps on youtube when installing their springs
Hello, my name is nobody :)