I am forwarding a letter from a King rep regarding their HP bearings.
I have had two long conversations with him regarding the specs
for their bearings and possibility of getting TR bearings made in
the HP style.
The old AM bearing that they have in stock has about
7500 psi capacity. The new SI bearing is like the old AM with
some silicone added to the alloy and is good to 9500 psi.
The HP series is a variation of the SI/AM - see his letter.
The CP bearing is a trimetal bearing similar to VP with a
psi of 10,000.
It is pretty cheap and easy to get King to make bearings for
our cars in AM,SI, or CP. Whenever they are going to make
another batch of TR bearings (they do have a schedule of sorts)
we can specifiy a number of sets in the styles we want.
The HP may be more expensive. If the HP's can be made without
the need for new tooling to make the steel part of the bearing, we
will be in good shape. if not, the costs and minimum order requirements
increase.
-----Original Message-----
From: Mark Klein <mark@kingbearings.com>
To: riverside@cedar-rapids.net <riverside@cedar-rapids.net>
Date: Tuesday, May 04, 2004 8:03 AM
Subject: AM to HP
Art,
As I tried to describe to you yesterday, the main differences between our
Street bearings & our High Performance bearings are as follows:
1.The greater eccentricity in the construction of the shells are stricker to
compensate for the higher rod stresses developed by the higher RPM's.In this
way the bearings will keep their round shape under the increased stresses.
2. All connecting rod bearings have a large camfer on the crank cheek side of
bearings. .
3. Mains are narrower for use with large radii crankshafts
4. Mains are available 3/4 or full grooved for better lubrication
5. Mains have larger oil holes (5/16") for better lubrication.
6. All HP sets are available in a wider selection of undersizes; to include
stdx, .001, .10X (.009"), .011, .20X ( .019"), .021.
I hope this answers your question.
Thank you for your interest in King Engine Bearings,
Mark Klein
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