SB Crane Retrofit Roller Lifter Issue

-
Sent the cam back to Comp. They looked at it and said it can be reground with a .030" smaller base circle so that is what they are going to do. That should provide at least .025" of oil groove coverage at max lift.
 
340sFastback said:
Getting lifter bushings installed is anywhere from $500-$700 depending on the shop. Yes, it is extremely expensive. But my understanding is they have to have jigs for a small block mopar in order to do it. And I wouldn't let them do it unless they have done a small block mopar before. Its not the same as a small block chevy.

You can have the bushings drilled for oiling prior to being installed for hydraulic cams or if you want the lifter to have pressurized oil for push rod oiling.
Click to expand...

What he said. Although the CNC Rottler doesnt need a jig ;). It costs me $500 with the bushings and .035 holes in them. I dont like strictly relying on splash to keep them oiled.
 
The new smaller base circle cam was delivered today. All the lifters are now well covered both at the top and the bottom. Ran the oil pump and I get a steady 80 PSI no matter what orientation the cam sits at. I see some bleed off on all the lifters but its slow and steady so oil pressure should be excellent. Brian at IMM stayed with me and got the problem solved.

LifterProblemSolved.jpg
 
I think I am going to tear it down, clean the block up, and start measuring piston ring end gaps.
 
Nice job Bill. Do you recall what the final base circle diameter ended up being?

Brian is a really good helpful guy.

Looking forward to seeing how it runs.
 
I am using Comp Cams Pro Magnum roller rockers and I need to measure and order custom length push rods.

I don't know what the specs on the base circle are but the base circle is almost down to the shaft of the cam.
 
hey guys are the retrofit roller lifters the same height as a solid lifter motor ? what i mean is can i use my existing mechanical pushrods ? i've w2's and i just had this set made a few years ago and was hoping i could reuse them , thanks
 
I can't believe this thread has gone on for 3 pages, someone early on gave you the fix,
" goto hughes engines website and do a bit of reading " that would have saved you all these hassles. They make a lifter designed to fix all these problems, it is made with the oiling collar a lot lower down. This problem has been known for literally years, don't you guys read any of these threads and take anything in????
 
raymond said:
I can't believe this thread has gone on for 3 pages, someone early on gave you the fix,
" goto hughes engines website and do a bit of reading " that would have saved you all these hassles. They make a lifter designed to fix all these problems, it is made with the oiling collar a lot lower down. This problem has been known for literally years, don't you guys read any of these threads and take anything in????
Click to expand...


Did you see how OLD the thread is... 2008!

When did hughes come out with those lifters to fix this issue? I'm betting they weren't out when this all went down. psssttt, they weren't.. Hughes even mentions the issues on the sales page for those older retro fit lifters. The ones available at the time don't do **** for the problem Bill had as it's a block machining issue from mopar.

Those lower band models have only been out about 12-18 months or so, not almost 4 years.

Carry on.
 
You must log in or register to reply here.
-

Back
Top