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Engine Rebuild Gaskets by Ortmann

John has put together a list of the gaskets from Ortmann.  For those not familiar with Ortmann gaskets, using John's excellent reference, plus help from Ronny, Norm, Jules, Matthias, Chas and Don to identify some of the unknowns, you should be able to find the gaskets you need, and to match the gaskets to the original parts numbers.

 

A     12392-548-000  Under Cover Gasket B     18242-504-010  Exhaust manifold Gasket 
 

Pg03-17_CylinderheadUnderCoverPg116-08_ExhaustPipeGasket

C 18150-506-000 Exhaust Manifold Copper rings D 30211-500-004 Distributor O Ring 63.5 x 3.0        

Pg116-02_ExhaustManifoldGasketpg44-10_DistributorOring63-5x2-0

E 12193-500-060 Chain Case Gasket F 12251-506-010 Cylinder Head Gasket

Pg03-19_ChainCasePg03-18_CylinderHeadGasket

G 91308-506-010 Cylinder sleeve bottom seals H 30139-500-010 Distibutor Body Gasket            

Pg03-20_CylinderSleeveOrings58-5x2-0Pg44-01_DistributorBodyGasket

I 91318-500-000 oil pump housing O ring J 91317-500-000 Oil Return Pipe ends O ring

Pg31-21_OilPumpBodyOring27x2-7Pg31-20_OilReturnPipeOrings18x3-6

K 91309-500-010 Water Channel Intake Manifold to head L 91302-504-010 Head gasket side O ring   22 x 3.0             

Pg03-22_IntakeManifoldOring20x3-8Pg03-23_HeadGasketOring22x3-6

M 15329-500-020 Oil Pumpr Cover Gasket N 15319-500-020 Oil Pump Body Gasket

Pg31-10_OilPumpCoverGasketPg31-11_OilPumpBodyGasket

O 17111-506-000 Intake manifold gasket P 11791-500-010 Oil Pan gasket           

Pg29-14_IntakeManifoldGasketPg31-02_OilPanGasket

Q 19901-500-050 Water Pump gasket R 19331-500-010 Thermostat to housing Seal

Pg28-17_WaterPumoGasketPg28-10_WaterSealThermostat

S 19903-500-040 water pump casing gasket T 19319-500-343 Thermostat Body Gasket

Pg28-01_WaterPumpCasingGasketPg28-02_ThermostatBodyGasket

U 14591-500-030 Tensioner base gasket V 91315-500-000 Oil Filter Shaft O ring

Pg27-14_TensionerHolderGasketPg27-19_OilFilterShaftOring11x1-8

W 91313-500-000 Tensioner push bar O ring X 91312-500-000 Chain Guide O ring

Pg27-12_TensionerPushBarOring7x1-5Pg27-11_ChainGuidePinOring15x1-8

Y 91205-500-000 Front cover oil seal Z 11591-500-040 Front cover gasket

Pg24-16_FrontCoverOilSeal42x56x7Pg24-02_FrontCoverGasket

AA 91317-500-000 Check Valve O Ring                              AB 91302-500-000 Oil Dip stick holder O ring (91301-428-003)

Pg16-08_CheckValveOring18x3-6Pg16-03_DipStickOring36x3

AC 91208-500-020 Rear Main oil seal       AD 12191-500-100 Cylinder sleeve Gasket

Pg15-09_RearMainOilSealPg15-06_CylinderSleeveGasket

AE 91306-500-010 Cylinder Sleeve O Ring x2 AF 11691-500-030 Rear Cover Gasket             

Pg15-05_CylinderSleeveOring8x1-6Pg15-04_RearCoverGasket

AG 91305-500-010 Cylinder head to Camshaft 6 X 3.8 AH 91201-506-000 Tachometer gear shaft seal                

Pg11-05_MainBearingsOrings6x3-8Pg08-34_TachoGearShaftOilSeal9x19x5

AI 12449-506-000 Tachometer gear holder                              AJ 91207-500-020 crankshaft Seal 16 - 26 - 4                                 

Pg07-22_TachoGearHolderGasketOilSeel16x26x4

AK 90471-500-000 Oil Check Packing (Cylinder)  AL 90476-500-000 Oil Pan Drain Plug washer (9410914000)?

CopperWasher10X16X0-85CopperWasher14x22x1-4

AM 90472-500-000 Intake Manifold drain plug gasket  AN 91306-500-000 Water passage between block and cylinder head?

CopperWasher10x20x1-4Oring6x1-8

AO 91305-516-000 Crankshaft main bearing oil passage 6 x 3.8 AP         Choke Plate A and Chocke Plate B (Eurasia or Ortmann)

Oring8x3-0choke_plate

AQ oil screen  (Picture courtesy of Spread-tool)      AR contact beaker (Eurasia or Ortmann)                    

oil_strainercontact_breaker

AS 42567 (25358) Sproket Oil Seal               AT  27 x 3.0 O-ring may be 91318-500-000 oil pump 27 x 2.7

OilSeal27-36-6Oring27x3-0

AU 9 x 2.0 O-ring is used for the crankcase to block joint original 9 x 1.8.

AV 16-32-5 oil seal is 30111-500-004 distributor oil seal, inside distributor body, rarely replaced

Oring9x2-0OilSeal16x32x5

AW 91307-516-000 late S800 (MK II)  starting clutch 20.5 x 1.5

 AU Crankshaft Nut and Washer (Eurasia-ps)                       

Oring20x1-50ecff8b3b27ce5eaec52cd7a41b2ccae

 

Thanks Ronny for the following information:

 

  Number Numnber Part Number  Picture above
Honda S600 Gasket Set Required for Repair    
Gaskets

Engine 

Overhaul

Head

Rebuild

   
Gasket Undercover 1x n.a.  12392-548-000   A
Gasket Cylinder Head 1 x 1 x 12251-506-010  F
Gasket Chain Case 1 x n.a. 12193-500-080  E
Gasket cylinder sleeve 1 x n.a. 12191-500-100  AD
Gasket Oil Pan 1 x option 11791-500-020  P
Gasket intake manifold 1 x 1 x 17111-506-000  O
Gasket tensioner holder 1 x option 14591-500-030  U
Gasket Exhaust manifold  1 x 1 x 18242-504-000/010  B
Gasket for Thermostat housing 1 x 1 x 19319-500-343  T
Gasket Water pump casing 1 x 1 x 19903-500-040  S
Gasket Water pump 1 x  n.a. 19901-500-050  Q
Gasket crankcase front cover 1 x  n.a. 11591-500-060/070  Z
Gasket crankcase rear cover 1 x n.a. 11691-500-030  AF
Packing Distibuter body 1 x 1 x 30139-500-010  H
Gasket oil pump body 1 x n.a. 15319-500-020  N
Gasket oil pump cover 2 styles included 1 x  n.a. 15239-500-020  M
Gasket tachometer gear holder 2 x 2 x 12449-506-000  AI
Packing contact breaker 1 x 1 x 16781-506-000  AR
         
O Rings        
         
Water channel large cylinder head & intake 20 x 3,8 1 x 1 x 91309-500-010  K
Oil passage upper crankcase 8 x 1,6 3 x 3 x 91306-500-010  AE
Water passage between block and cylinder head 6 x 1,5 1 x 1 x 31306-500-010  AN
Liners bottom seal 58,5 x 2 4 x  n.a. 91308-506-010  G
Oil passage cylinder head to camshaft bearings 6 x 3,8 6 x 6 x 91305-500-010  AG
Oil passage crankshaft bearings 6 x 3,8 3 x  n.a. 91305-516-000  AO
oil passage between engine block and crankcase 18 x 3,6 1 x  n.a. 91317-500-000  J
oil pump tube between cylinder head cnd crankcase 18 x 3,6 2 x 2 x 91317-500-000  J
oil pressure releif valve 18 x 3,6 1 x n.a. 91317-500-000  J
thermostat housing 1 x 1 x 19331-500-010  R
Oil dipstick holder 36 x 3 1 x  n.a. 91302-500-000  AB
Head gasket O ring to engine 1002291 22 x 3 then 91311 2 x  2 x 91302-504-000 L
idler distribution 15 x 1,8 1 x  n.a. 91312-500-000  X
centifugal filter shaft 11 x 1,8 1 x  n.a. 91315-500-000  V
oil pump housing 27 x 2,7 1 x  n.a. 91318-500-000  I
lid side cylinder water passage 25 x 2,5 1 x 1 x 91301-531-000  block heater
between intake manifold and carbeurator rubbers 29 x 3 4 x 4 x 16229-516-010  
distributer cap ring 63,5 x 1.8?/3.0 1 x  n.a. 30211-500-004  D
between starter and starter gear 1 x  n.a. 31324-500-005  
starter motor to underblock 79,4  x 3,1  1 x  n.a.    
         
Seals        
         
transmission (gearbox) mounting plate seal 58(56) x 76 10 1 x  n.a. 91201-512-000  AC
Rear crankshaft seal 16 x 26 x 4 1 x  n.a. 91207-500-020  AJ
Starter clutch lid (dry) 42 x 56 x 7 1 x  n.a. 91205-500-000  Y
Starter clutch gear seal (dry) 25 x 35 x 8 1 x  n.a. 91206-500-010  
Starter gear seal 15 x 29 x 9 1 x  n.a. 91211-500-000  
tachometer seal 1 x 1 x 91201-506-000  AH
         
Miscellaneous        
         
Oil Pump Inlet strainer (screen) 1 x optional 15420-506-000  AQ
Exhaust Manifold copper gasket rings 4 x 4 x 18150-516-000  C
Crankshaft washer 16 mm lock washer 1 x  n.a. 90434-500-020  AU
Crankshaft nut 16 mm locknut 1 x  n.a. 90231-500-010  AU
Oil Check plug gasker (in cylinder) 1 x 1 x 90471-500-010  AK
Water choke plate B 1 x optional 12262-516-000  AP
Water choke plat A 1 x optional 12261-516-000  AP
Chain tensioner 1 x  n.a. 14500-531-000  
chain guide roller 1 x  n.a. 14630-500-030  
Guide roller head 1 x optional 14620-516-000  
guide roller chain case 1 x  n.a. 14610-516-010  
Oil pan plug gasket 1 x 1 x 90476-500-000  AL
temperature sender gasket 1 x 1 x 90472-531-000  
         

 

Norm added the following insight:

 

The O-ring used for camshaft bearing holders and S600 crankshaft bearing holders, 91305-500-010, 6 x 3.8, shown for the crankshaft but not the camshafts in my S600 parts manual, also is shown in the S800 manual for S800 camshafts, but with size 6 x 3.4. I believe the 6 x 3.8 is correct, but in any case the US standard size -202, exact dimensions 5.94 x 3.53, makes a fine substitute. Good substitutes for most of the O-rings can be found in readily available US standard sizes if you are short.

Large water channel cylinder head to block, early S600 engine to 1002291, 91302-504-010 O-ring 22 x 3.0, S600 engine from 1002292 and S800 all, 91311-500-010 O-ring 26.5 x 3. Be careful not to confuse with slightly larger 27mm oil pump O-ring.  91301-531-000 O-ring 28 x 2.5 is for the optional block heater. S800 crank bearing holder O-ring 91306-516-000 O-ring 8 x 3; other S800 O-rings are the same as the S600 parts.

 

Good Luck

 

Eric


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Some S600 photography courtesty of Karin Johnston