Isky vs. Comp 10 degree retainer question

Posted By: turbobitt

Isky vs. Comp 10 degree retainer question - 12/09/11 05:37 PM

I'm switching from a Comp Cams 10 degree titanium retainer to am Isky 10 degree retainer and loosing .050 installed height with the same set of Comp retainers.
Is this typical ?
Are the Isky locks different ?
Should I Just install a set of +.050 locks to make up the difference ?

Allan G.

Posted By: bumps440

Re: Isky vs. Comp 10 degree retainer question - 12/10/11 12:41 AM

Unfortunately... there is no standard among manufactuers as far as machining retainers goes. so ones +.050 retainers can be very different than anothers +.050 stuff.
yes you can just go ahead and use different locks to get your desired heights.

Posted By: Bob_Coomer

Re: Isky vs. Comp 10 degree retainer question - 12/10/11 02:20 AM

Quote:

I'm switching from a Comp Cams 10 degree titanium retainer to am Isky 10 degree retainer and loosing .050 installed height with the same set of Comp retainers.
Is this typical ?
Are the Isky locks different ?
Should I Just install a set of +.050 locks to make up the difference ?

Allan G.

By " loss" which way do you mean? I assume its loosing installed height?
Its hard to say, will your current setup allow the more spring pressure? Will it throw the springs in coil bind?
Loosing .050 in installed height isnt good. Most of the springs are designed to run near coil bind or .060+ or so from coil bind, this is how they work best and are designed. If your heads are setup like this, you dont want to loose .050.. Lots of ways to compensate, yes .050 locks will make it up, there might be enough shim to remove and gain back what you lost.
Which Comp retainers and Isky retainers are you trying, so I can write down your findings?

Posted By: turbobitt

Re: Isky vs. Comp 10 degree retainer question - 12/10/11 04:09 AM

Quote:

Quote:

I'm switching from a Comp Cams 10 degree titanium retainer to am Isky 10 degree retainer and loosing .050 installed height with the same set of Comp retainers.
Is this typical ?
Are the Isky locks different ?
Should I Just install a set of +.050 locks to make up the difference ?

Allan G.

By " loss" which way do you mean? I assume its loosing installed height?
Its hard to say, will your current setup allow the more spring pressure? Will it throw the springs in coil bind?
Loosing .050 in installed height isnt good. Most of the springs are designed to run near coil bind or .060+ or so from coil bind, this is how they work best and are designed. If your heads are setup like this, you dont want to loose .050.. Lots of ways to compensate, yes .050 locks will make it up, there might be enough shim to remove and gain back what you lost.
Which Comp retainers and Isky retainers are you trying, so I can write down your findings?

Yes, I'm loosing .050 installed height with the Isky retainer. My old Comp retainers are #732 and the new Isky retainers are #92-TI-10. I wanted these retainers because they fit the #9985 tool room springs really well. I want to keep the same installed height and don't want to risk cutting the spring pockets any deepeer. I will try the +.050 locks and see how they fit.

I never used Isky retainers so I don't know if this is typical or to be expected.

Allan G.