I'm thinking of purchasing a Moroso valve seat pressure gauge Part # 62388 which is used to do a quick test on valve spring pressure w/o removing the springs from the heads. Is anyone out there using one of these tools? I'd like some feedback before I purchase one. Thanks

I've got both the normal one and the short unit for tight clearance.
They work well on aluminum roller rockers and some other aftermarket ones, but I don't know about stamped steel.

Doug

twc,
I do not think they are accurate enough to actually measure installed spring pressure. There is too much "feel" involved. What they are excellent for is checking springs to see if they have lost much pressure, such as on a race engine cam. In order to do this, you have to use the tool to check the springs when they are new and have been set up properly. You can record the readings and then you can use it as a comparison tester.

N2097SS, My springs have a seat pressure of about 250# and an open pressure of 800#. Will the scale on the tool read in these limits? Which pressure will I be reading?
BillK , That's what I want it for. I read a really good article on the Rehre-Morrison site regarding valve spring pressure etc. and decided I wanted to monitor mine. I think it would be like using an old dial torque wrench as far as feel. Anyway I think I'll give it a try.

I use the Moroso and its great to keep track of changing spring pressures. I agree that its not very accurate but it saved me from blowing an engine when one of my spring was collapsing! One more run down the track could have spelled curtains for my engine! Checks valves when they are closed on the seat! :cool:

Thanks Blazerbob, I'm with you. $100.00 worth of prevention is worth $10,000.00 of cure!!!

What Bill said. These thing are good for tracking changes in your VS pressure. What you do is get your springs tested and set up at a known height and pressure. Then, before ever running the car, go thru them with the tester checking the seat pressure carefully. Do it a few times so you get the feel of it. Small differences in the angle of the wrench and stuff can affect the readings substantially. It's been mentioned that you're checking seat pressure. Then you can do a check after each race outing to see if any are going away. This is a Really Good way of protecting yourself from a nasty engine problem, especially if you're running an aggressive setup. 250/800 is in that category, IMHO.

The other thing you'll need to do with a setup like that is track, in writing, the valve lash. If anything is going wrong with a component it usually shows up in the lash. If you get one valve with lash changes that other valves don't have it's time to have a look at the parts.

Tom