Sl-68 and SL68-II internals compatibility?

[James_Blond]

Anyone know offhand if the I and II seals and springs are compatible? I have a II that I’ve had forever and never really had a problem with. Probably will stay in my collection forever as its just freaking bullet proof. I recently got a sl68-I and a NOS parts kit for it. Was wondering if the parts kit would be worth keeping for the II if I ever broke a spring or something. I’m sure the orings are probably mostly worthless in it, since I would think this parts kit dates back to the 90s.

[James_Blond]

Well in answer to my own question and for posterity. The springs are different diameters and lengths.

[capitalpaintball]

I am surprised the springs are different. Are you sure someone hasn't already made a change in the gun? Tippmann was very good about re-using the same parts across their line of guns. The valve orings in the sl68 and sl68II are reused in the valves of all their guns at least up to the tpx. The trigger spring on the sl68 is reused as the sear spring in the carbine and early 98.

[James_Blond]

Not sure, no way to know, but the sl had a shorter and wider main spring. And the valve spring from the sl I think was also wider than the II valve spring iirc.

[markdem]

tippmannparts.com still has parts in stock. I can vouch for them because i have their parts in my sl68 2 (original version)

[capitalpaintball]

Got me curious. The springs in these 2 are the same but someone cut the SL1 spring to adjust velocity

[James_Blond]

Hmm, now I’m gonna have to tear down both before I sell off the SL and take pics to prove I’m not going crazy.

[James_Blond]

II internals top: valve spring appears same diameter, but long on the II. Main spring looks longer(I is cut) and slightly bigger diameter.
I internals bottom.

Now I’ve got to get this SL68 packed up and shipped.

[Toestr]

I have a rerelease 2 and the valve spring is much shorter than what you have pictured. Probably similar to the one you have pictured in your 1.

[James_Blond]

Did the modern II have a true 45 grip or was it the same as the original? I know the feedneck was updated.

[Toestr]

The grip on the rerelease is the same as the original except for the grip having far less of a hump on the back.

[CommonCold]

It looks like for internals, not much is different. Hammers are the same size, within .005, bolts too. Only major difference i see is the spring sizes, the mk.1 is about 3/8 longer. The cast frames are very similar, with the biggest changes being the feedneck and grip. It looks to me that the grip is slightly longer to allow for the air inlet to be lower, almost entirely out of the way for the grip.