please help !! springs
Thread Starter
Staging Lane
Joined: May 2002
Posts: 80
Likes: 0
From: ca
please help !! springs i have a guy thats going to give e great deal on a set of springs,Used ISKY 295 D, 200o miles on then, and i am going to get a 224/224 561/561 cam will these springs work ?? are they good springs?
please help me i have the money and i dont want to keep the guy waiting, and i can find any one who knows about these springs
thanks
please help me i have the money and i dont want to keep the guy waiting, and i can find any one who knows about these springs
thanks
TECH Fanatic
Joined: Feb 2002
Posts: 1,089
Likes: 0
From: New Jersey
Re: please help !! springs On two different sets, We had inner dampner failures with the same cam size, it could have been an isolated incident, but costly non the less. I have used 6 sets to date and I recalled all the local sets in to be inspected/replaced and warned my customers that are out of state to do the same, I will be inspecting the 2 locals this week and my customers should be reporting in on the others by the end of this week. They are the 295D's that are "factory install height drop in's". Is there anyone else with this inner dampner problem out there? The first indication that something was wrong was oil cunsumption due to the fact that the broken dampner pieces were tearing up the valve seals and in turn hammered the hell out of the Ti retainers.
Joe.
Joe.
Re: please help !! springs I think the 295D's are a good spring. However they need to be used with a cup instead of a factory style locator. The factory locator puts excess pressure on the inner dampner which in turn could cause premature failure....
We have custom made spring cups designed to work any 1.25" diameter valve spring such as the Comp 941, 981, Isky 235D, 295D, etc. The cup locates the spring by holding the base of the spring on it's outside and the i.d. of the cup holds onto the valveguide. These cups are LS1 specific in that the cup i.d. is correct for the LS1 guide diameter. The cylinder heads do have to be machined to accept these cups.
The factory locator in contrast locates the spring by using an inner 'step' that goes inside the spring. This works fine when using a factory style spring (such as the Comp 915's or 918's) but in my opinion causes problems when using a conventional style single spring with a dampner. Because of the dampner in most of the single springs, the 'step' in the factory locator causes the bottom of the spring to not be lined up correctly with the top of the spring. It also puts extra pressure on the dampner. All of these things can add up to causing premature spring failure with any single spring with a dampner.
We have custom made spring cups designed to work any 1.25" diameter valve spring such as the Comp 941, 981, Isky 235D, 295D, etc. The cup locates the spring by holding the base of the spring on it's outside and the i.d. of the cup holds onto the valveguide. These cups are LS1 specific in that the cup i.d. is correct for the LS1 guide diameter. The cylinder heads do have to be machined to accept these cups.
The factory locator in contrast locates the spring by using an inner 'step' that goes inside the spring. This works fine when using a factory style spring (such as the Comp 915's or 918's) but in my opinion causes problems when using a conventional style single spring with a dampner. Because of the dampner in most of the single springs, the 'step' in the factory locator causes the bottom of the spring to not be lined up correctly with the top of the spring. It also puts extra pressure on the dampner. All of these things can add up to causing premature spring failure with any single spring with a dampner.
TECH Fanatic
Joined: Feb 2002
Posts: 1,089
Likes: 0
From: New Jersey
Re: please help !! springs Thanks for sharing that insight into what the problem could be with the premature failure Geoff, funny you should mention the cups, because a particular set that did fail did not have cups installed. I was afraid to machine the spring seats in the heads because there was an exceptional amount of material removed from the roofs of intake runners and I was afraid of weakings them. But, all is not lost, we installed the Comp 918 springs in place of the 295D's and all is well.
Joe.
Joe.
