Valve spring pressure

Ed McLawhorn Jr. · 01-24-2021, 08:24 PM

On a dual valve spring with the inner spring slightly shorter, when checking spring pressure with rimac tester, do you need to account for the inner lip from retainer. When spring is on head and closed, the inner spring is not at same level as outer. Valve spring tester is flat and contact with inner spring is about .060 lower. I know I'm rambling, but maybe someone understands my question. Thanks.

Paul Precht · 01-24-2021, 08:46 PM

I use a .100" washer, a lot of retainers have a step about .100".

Ed McLawhorn Jr. · 01-24-2021, 08:51 PM

Paul, I have used a washer and seen dad do same for years. I didn't know until recently how much difference it makes if you leave it out.

BillK · 01-24-2021, 09:00 PM

Like the others said, you need to check it the same way that it will be installed. Same retainer and some type of shim to simulate the step in the head. What you really need to pay attention to in that setup is coil bind on the inner spring.

outlaw · 01-25-2021, 02:57 AM

I have used a quarter many times.

SGSST109E · 01-25-2021, 07:09 AM

I always check mine using the retainer

01-24-2021, 08:24 PM	#1
Ed McLawhorn Jr. Member Join Date: Nov 2008 Posts: 306 Likes: 3 Liked 19 Times in 17 Posts	Valve spring pressure On a dual valve spring with the inner spring slightly shorter, when checking spring pressure with rimac tester, do you need to account for the inner lip from retainer. When spring is on head and closed, the inner spring is not at same level as outer. Valve spring tester is flat and contact with inner spring is about .060 lower. I know I'm rambling, but maybe someone understands my question. Thanks.

01-24-2021, 08:46 PM	#2
Paul Precht Senior Member Join Date: Dec 2001 Location: Elysburg, Pa Posts: 726 Likes: 342 Liked 307 Times in 116 Posts	Re: Valve spring pressure I use a .100" washer, a lot of retainers have a step about .100".

01-24-2021, 08:51 PM	#3
Ed McLawhorn Jr. Member Join Date: Nov 2008 Posts: 306 Likes: 3 Liked 19 Times in 17 Posts	Re: Valve spring pressure Paul, I have used a washer and seen dad do same for years. I didn't know until recently how much difference it makes if you leave it out.

01-24-2021, 09:00 PM	#4
BillK Member Join Date: Nov 2005 Location: Waldorf Md Posts: 230 Likes: 12 Liked 30 Times in 17 Posts	Re: Valve spring pressure Like the others said, you need to check it the same way that it will be installed. Same retainer and some type of shim to simulate the step in the head. What you really need to pay attention to in that setup is coil bind on the inner spring. __________________ Bill Koustenis

01-25-2021, 02:57 AM	#5
outlaw Member Join Date: Aug 2008 Posts: 137 Likes: 78 Liked 132 Times in 52 Posts	Re: Valve spring pressure I have used a quarter many times.

01-25-2021, 07:09 AM	#6
SGSST109E Member Join Date: Jun 2007 Location: NJ Posts: 351 Likes: 62 Liked 126 Times in 61 Posts	Re: Valve spring pressure I always check mine using the retainer