PERKINS PARTS AUSTRALIA +++over 30,000 parts
PERKINS PARTS AUSTRALIA +++over 30,000 parts

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Perkins 236 block has hole in it

Perkins 236 block has hole in it

 

 

                                   Basic specs on a  Perkins 4-212 , 4-236 and 4-248

Engine type

212

236

248

Bore size

3.8750

3.8770

3.9750

Stroke

4.50

5.00

5.00

Square back Non stress block

Yes

Yes

Yes

Flanged back stress block

No

Yes

Yes

 

More specific specifications at the bottom of the blog

 

Hopefully  I can word this in a way that we all don’t all  get too lost in translation.

 

 

Cylinder blocks difference

  • You can use a 212 cyl block to make a 236 or a 248 Perkins or vice versa  they all can be modified to replace each other.
  • You can convert a 4-236 to be a 248 but you won’t really notice that much difference in extra HP. Fuel system can stay the same
  • There are flange liner blocks and non-flange liners e.non flanged liners are known as parrel liners
  • The early type Cylinder blocks have flanged and parrell  liners fitted . the top of the liner protrudes and this in known as the fire ring .
  • Fire rings type liners require top set u5lt1014
  • The later type 4-236 blocks have flanged liners . these have no fire ring and the top on the liner is flush with the top of the cyl block
  • 236 flanged liners are available  STD Over size backs you can get .010 and .040 over size backs
  • Non-fire ring type blocks require a different top gasket set U5lt1004
  • You can convert a chrome liner block to a cast liner block by changing counter bore depths

 

Crankshafts

  • 212 crankshaft has a different stroke to a 236 and 248..
  • 236 and 248 crankshafts are the same there are some variations
  • there are balance weight and non-balance weight types .
  • lip seal or rope seal
  • splined nose or non-splined nose
  • non spline nose cranks have 3 bolt holes – splined nose has 1 bolt hole

 

Conrods

  • All the conrods are the same and interchangeable
  • All small end bushes are the same
  • Conrod nuts and bolts are the same

 

Cylinder heads

  • 212, 236, 248 all the cylinder heads the same and interchangeable
All valves and springs are interchangeable