quick question about valve springs
#1
quick question about valve springs
I have a 99 silverado with the 5.3l vortec motor in it. I plan on installing a turbo on it in the near future. I also plan on upgrading from the stock valve springs that already have 250k on them. I found these valve springs on the summit website.
http://www.summitracing.com/parts/NAL-12499224/
These will work in my motor correct? They will be enough for no more than 10psi of boost? I wont need any other parts like different keepers retainers and stuff like that will I?
http://www.summitracing.com/parts/NAL-12499224/
These will work in my motor correct? They will be enough for no more than 10psi of boost? I wont need any other parts like different keepers retainers and stuff like that will I?
#2
I have a 99 silverado with the 5.3l vortec motor in it. I plan on installing a turbo on it in the near future. I also plan on upgrading from the stock valve springs that already have 250k on them. I found these valve springs on the summit website.
http://www.summitracing.com/parts/NAL-12499224/
These will work in my motor correct? They will be enough for no more than 10psi of boost? I wont need any other parts like different keepers retainers and stuff like that will I?
http://www.summitracing.com/parts/NAL-12499224/
These will work in my motor correct? They will be enough for no more than 10psi of boost? I wont need any other parts like different keepers retainers and stuff like that will I?
#3
Where's the Beef?
iTrader: (8)
Yes those springs will work. there's not a HUGE problem with putting a turbo on a 250k mile engine but I'd suggest doing some upgrading first. I also don't know if running 10psi is good. maybe 5-7.
Springs are normally purchased based on the lift of your cam. If you end up with a cam with more than 570 lift you will need better springs
Springs are normally purchased based on the lift of your cam. If you end up with a cam with more than 570 lift you will need better springs
#5
I dont expect to really run more than about 6-7 psi. I dont plan on changing the cam at all. Im trying to keep this on a decent budget and do minimal engine upgrades for this build. Since its my first turbo project I consider it a stepping stone into the world of forced induction. I guess part of me just wants to prove that you can turbo a 250k mile stock motor and do it on a decent budget.
I did a compression and leak down test about a year and 25k miles ago. I was in tech school studying to become a mechanic and one of our worksheets was to do compression and leak down tests, so I volunteered my truck because i was curious myself. I dont remember the exact numbers anymore as that was a year ago and my memory isnt real great sometimes, but I want to say it was in the ballpark of 150. I do remember that our instructor was very impressed with the numbers that we got from an engine with that many miles on it.
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