Schrick valve spring part No.

[maicol76]

Hi guys~

If someone knows Shcrick(not Bebearing) valve spring's part No., plz let me know.

[Dave07997S]

Originally Posted by maicol76

Hi guys~

If someone knows Shcrick(not Bebearing) valve spring's part No., plz let me know.

Get ahold of Malek at MRF..I looked in the Schrick catalog and didn't find anything. A lot of part #s but no description.

Dave

[deansbimmer]

I know they can supply them but I don't even see a 26mm spring in their catalog. Maybe my catalog is incomplete. Just curious if you looked into the springs from BE bearings? They come from the same factory that Shrick uses to make their springs (Schrick doesn't make them in house). Have you looked at the specs for them? http://wiki.rcollins.org/core/index....Specifications

[Dave07997S]

Originally Posted by deansbimmer

I know they can supply them but I don't even see a 26mm spring in their catalog. Maybe my catalog is incomplete. Just curious if you looked into the springs from BE bearings? They come from the same factory that Shrick uses to make their springs (Schrick doesn't make them in house). Have you looked at the specs for them? http://wiki.rcollins.org/core/index....Specifications

BE springs have identical specs to the Schrick thanks Dean

[maicol76]

Thanks for advice guys~

I think Be spring seems too much stiffer to use with stock camshaft.
64% higher seat pressure
34% higher pressure @ 0.450 inch lift
37% room for more camshaft lift

So I'm looking for less stiffer than BE spring. Does Schrick sell only one kind of spring?

How about Supertech valve springs? Supertech valve spring is 11% stiffer than stock

[jcolley]

Originally Posted by maicol76

Thanks for advice guys~

I think Be spring seems too much stiffer to use with stock camshaft.
64% higher seat pressure
34% higher pressure @ 0.450 inch lift
37% room for more camshaft lift

So I'm looking for less stiffer than BE spring. Does Schrick sell only one kind of spring?

How about Supertech valve springs? Supertech valve spring is 11% stiffer than stock

Why would a spring ever be "too stiff"? All energy imparted into the spring on valve lift is relieved in cam follow assist on valve close relieving cam countertorque on the crankshaft. Certainly provides greater resistance to lifetime cyclic fatigue and less likehood to high RPM valve float.

Edit: As long as we aren't talking coil bind, which these have more margin for than OEM springs.

[maicol76]

Originally Posted by jcolley

Why would a spring ever be "too stiff"? All energy imparted into the spring on valve lift is relieved in cam follow assist on valve close relieving cam countertorque on the crankshaft. Certainly provides greater resistance to lifetime cyclic fatigue and less likehood to high RPM valve float.

Edit: As long as we aren't talking coil bind, which these have more margin for than OEM springs.

Right..but, how can you handle wear, fatigue and power loss with stock parts except valve spring?

Stiffer, harder, stronger and so on.. the meaning of these contains shorter life if there is no appropriate harmonic tune together. I don't want power tune with an aftermarket camshaft, just need to cover and lessen the shortage of stock parts on the basis of 2 times engine failure.

[deansbimmer]

I’m not sure I understand you. Are you saying you had two stock engines fail due to defective springs because that’s unheard of.

There’s no practial reason to avoid the BE springs in a stock engine. Super tech are fine too if that’s what you think you need.

[maicol76]

Originally Posted by deansbimmer

I’m not sure I understand you. Are you saying you had two stock engines fail due to defective springs because that’s unheard of.

There’s no practial reason to avoid the BE springs in a stock engine. Super tech are fine too if that’s what you think you need.

Thanks for advice.
I think valve or valve spring was the reason of engine failure. so I'm considering to upgrade valves and valve springs together. Schrick valves with Supertech or Schrick valve springs.
I don't know what I'm doing is right..haha

[deansbimmer]

There’s nothing wrong with oem valves. They don’t cause failures. You’ll spend a lot of money replacing them for little to no benefit in a stock engine. Not sure why you only “think” the springs caused the failure...Either a spring broke or it didn’t- it should be easy to determine upon inspection. If a valve floated from an overrev situation then you want a stronger spring like the BE/Shrick.

[maicol76]

Originally Posted by deansbimmer

There’s nothing wrong with oem valves. They don’t cause failures. You’ll spend a lot of money replacing them for little to no benefit in a stock engine. Not sure why you only “think” the springs caused the failure...Either a spring broke or it didn’t- it should be easy to determine upon inspection. If a valve floated from an overrev situation then you want a stronger spring like the BE/Shrick.

I've never mentioned valve spring was the direct cause of engine failure. All our inspection pointed to valve failure. I know it is very rare case.
As long as possible without compromising durability of stock parts, I need a little more reliability than stock in valve train. but, if anything get stiffer or harder than stock, the material or construct of counterparts should be changed.
I don't want a big change, so I'm trying to find the best option.

[OM VT3]

Any spring you buy for the s65 is most likely all the same