Hastings
has available for the automotive machinist an excellent valve
guide knurling kit for repair of valve guides with up to .006
wear.
Valve guide knurling has become a highly
recommended repair in the last decade. Many producers of heavy
duty engines use a knurled guide as original equipment.
The knurled guide provides controlled
lubrication and a controlled bearing area for the valve stem.
This allows the clearance fit to be 1/2 of original smooth
guide recommendation and aids in stopping oil loss past the
valve guide. Guide knurling allows repair of cast integral
guides and is even used on replaceable guides because of its
performance advantages, and speed of repair.
The Hastings valve guide knurler is
the fastest method of guide knurling available and also the
most durable.
The resizing arbor which puts the spiral
knurl in the guide and actually resizes the guide has four
graduated steps which actually wedges or moves the metal without
cutting it and breaking it apart. This is very important in
the continued durability of the knurled guide.
The finish reamer then machines the
resized guide to precision fit and finish.
Guide knurling will help eliminate
valve sticking and valve stem scoring. Knurling eliminates
the necessity of carrying a large replacement guide inventory,
and is considerably less costly than removing and replacing
worn guides. |
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Hastings
valve guide knurler kits contain:
1. A speed reducer which operates
with a 1/4" or 3/8" drill.
2. Special knurling lubricant.
3. Cleaning brushes for the valve
guide and reamers and arbors.
4. Guide resizing arbors for the
popular domestic guides are 5/16", 11/32", 3/8",
and 7/16".
5. Precision guide reamers in .312,
.343, .345, .373, .375, and .397 sizes.
6. Arbors and reamers are available
for a size guides - import or domestic vehicles.
7. A sturdy compartmentalized box
is included for storage and portability of parts.
8. Complete valve guide knurling
instructions.
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Part
No. 1525