Noisy Lifters, page two.
Even though there was nothing to suggest the pump was bad, given the work involved to remove the pan we decided to replace the oil pump. Hot Heads has a high volume pump for this engine. It is modified from a 340 oil pump, and here is the installation.
The original oil pump installed on the rear main bearing.
Another view of the original oil pump.
Comparison of original oil pump (left) and 340 high volume pump (right) from Hot Heads.
To the left is the rear main bearing cap. To the right is the new pump kit.
The adaptor plate installed on the rear main bearing cap.
The new oil pump installed for test fit.
The new oil pump installed.
Another view.
While talking with Bob Walker at Hot Heads about the oil pump and the small amount of oil we found at the rocker shaft, Bob said Chryslers don't have much oil up there by design and we should not be concerned. Sure enough, when we fired up the engine with the new oil pump, we had only slightly more oil at the rockers with significant higher pressure on the dash gauge.
We were not surprised when the higher oil pressure did not solve the lifter clacking.
To page 3.
Hot Heads Research & Racing, Inc.
276 Walker's Hollow Trail
Lowgap, NC 27024.
Contact Bob Walker
Phone: (336) 352-4866 Fax: (336) 352-3892
E-mail: info@HotHemiHeads.com
http://www.hothemiheads.com/hotheadspi.html
High torque starters, oil filter conversions.