K&B 40 & Torpedo 40 Design Family

 This engine evolved from the Torpedo .29, .35 & .40.
It was originally designed as a front and rear intake.

The R/C engine came with many different carburetors,
starting with latest K&B w/remote and fins, K&B w/needle and fins,
Large square with K/B engraved on front, Irvine,
Perry, small diecast body, small machined machined.

This is sorted newest to oldest
Click on picture to enlarge.
.40 R/C # 4011
Shown with remote needle but also came with the same carb and needle attached.
.40 ABC
[PN 4050]
This is the ABC version of the 4011. It came with a tuned muffler and uses remote needle. Remote needle not shown in picture.
Click for>>> Owners Guide --- Exploded View
.40 Marine
[PN 4012]
40 ABC Marine
[PN 4075]
   
   
   
   
   

.40 R/C Series 75
# 8011
This is almost idenical to the 4011 except it uses a very small front bearing. All the parts in the front housing are different from the 4011.

Prop driver is held on by a set screw and roll pin, the prop shaft then screws into the prop driver.

 

   
   
   
   
   
 
New
Part No.
Old
Part No.
Description
Model
Model No.
10-4001
8252
Crankcase
Ringed
4011 early, 4012 early, 8011
10-4002
4021
Crankcase
ABC
4050, 4075
11-4001
8008
Head
Ringed
-
4011 early, 4012 early, 8011
11-4002
4022
Head
ABC
4050
11-4021
8378
Water Jacket w/screws
IB ABC Ringed
4012 early
11-4022
8374
Combustion Chamber
Ringed
-
11-4023
4076
Combustion Chamber
ABC
4075
11-8720
9161
Head Assembly (fittings & screws)
use 11-8721 & 11-8722
  4011
11-8721
9160
Combustion Chamber
IB Ringed
4012 early, 4075
12-4001
8055
Sleeve
Ringed
4011 early, 4012 early, 8011
13-4001
8034
Piston
Ringed
4011 early, 4012 early, 8011
14-4001
4005
Ring
Ringed
4011 early, 4012 early
15-4001
4010
Wrist Pin w/ Teflon Pads
ABC Ringed
4011 early, 4012 early, 4050, 8011, 4075
16-4001
7982
Con rod early style
-
4011 early, 4012 early, 8011
16-4002
4023
Connecting Rod w/Bushings
IB, ABCIB, ABC
4050, 4075
-
7782
crankshaft
-
8011
-
8058
crankshaft - counter rotating
-
8011
17-4001
8284
Crankshaft
ABC Ringed
4011 early, 4012 early, 4050
17-4002
4077
Crankshaft
(use 17-4001)
ABC
4075
17-4011
8287
Crankshaft (Counter Rotating)
-
4011 early, 4012 early
18-7780
7780
Rear Bearing
(use 18-8779)
-
8011
18-8776
8776
Front Bearing
-
8011
18-8778
8778
Front Bearing
ABC Ringed
4011 early, 4012 early, 4050, 4075
18-8779
8779
Rear Bearing
ABC Ringed
4011 early, 4012 early, 4050, 4075
19-6101
6557
Prop Drive Collet
ABC Ringed
4011 early, 4012 early, 4050, 4075
-
7775
Prop Drive old style with pin for attachment
-
8011
20-4021
8330
Flywheel (Brass)
IB
4012 early
20-4022
4078
Flywheel (Aluminum) -
4011
20-4091
4032
drive pin for old style prop driver
-
8011
20-6101
6558
Prop Driver - Collet Type
ABC Ringed
4011 early, 4012 early, 4050
21-4001
7772
Back Plate
ABC Ringed
4011 early, 4012 early, 4050, 8011, 4075
24-4090
7832
Prop Stud Kit (1/4 X 28 Thread)
ABC Ringed
4011 early, 4012 early, 4050
24-4091
4091
2 Prop Stud Kit (1/4 X 28 Thread)
-
-
25-4001
  Engine Screw Set
ABC Ringed
-
4011
25-4002
  Engine Screw Set (Marine)
ABC Ringed
-
25-4031
6799
Muffler Screws (2)
Ringed
4011 early, 4012 early, 8011
25-4032
4043
Muffler Screws (2)
ABC
4050
25-4081
8014
Carburetor Set Screw (2) 10X32
ABC Ringed
4011 early, 4012 early, 4050, 8011, 4075
26-4001
7760
Wrist pin teflon pads
ABC Ringed
4011, 4012
27-5880
-
Idle mixture disk O-ring set of 2 (late carb)
-
-
27-5981
-
Carburetor neck O-ring
ABC Ringed
-
29-4001
8289
Gaskets - sold in set of 2
ABC Ringed
4011 early, 4012 early, 4050, 4075
29-4012
4024
Head Shim - .003 & .010
ABCIB ABC
4050, 4075
-
4057
Muffler, stud, tail and nut kit
-
4060
30-4001
8259
Muffler Complete (Screws and Plug)
Ringed
4011 early, 4012 early
30-4002
4029
Sport Muffler
ABC
4060
-
4034
Muffler Adaptor
ABC
4050
-
4035
Tuned Muffler
ABC
4050
-
4080
Front Plate Assembly
ABCIB
4075
-
8288
Front plate for counter rotation crankshaft (Early style)
-
4011 early, 4012 early
-
8290
Front Plate Assembly, Less Carburetor
ABC IB
4011 early, 4012 early, 4050, 8011
-
8359
Front Plate
-
8011
31-4001
8283
Front Plate
ABC Ringed
4011 early, 4012 early, 4050, 8011, 4075
33-4001
4017
Piston and Sleeve
ABC Aero
4050
33-4002
4019
Piston & Sleeve Assembly
ABC Marine
4075
54-8791
5191
cable collet assembly
-
4075
54-8792
5170
cable collet 3/16 id
-
4075
54-8902
8367
Pressure Fitting
ABC ABCIB IB
4011 early, 4012 early, 4050, 8011, 4075
-
5960
K&B Carburetor - .312 ID Bore (was noted to use 5965 for 4050) Must use with remote needle.
-
4050, 4075
-
5965 ?
K&B Carburetor - .312 ID Bore
IB ABCIB ABC
-
-
8354
adapter - carburetor to front housing
-
8011
-
8761
K&B Carburetor neck OD .530 ID .312 (use 5960 ?)
-
4012
-
8762
carburetor complete
-
8011
80-5901
5950
Carburetor Complete early style with needle attached
-
4011 early, 4012 early
80-5902
5970
K&B Carburetor complete for remote needle
-
4011, 4012
81-5901
5948
Carburetor Body and Barrel
-
4011 early, 4012 earl
-
5949
Carburetor Maintenance Kit
IB ABC ABCIB
4011 early, 4012 early, 4050, 4075
-
5968
Carburetor Body and Barrel
ABCIB IB ABC
4050, 4075
-
6834
Carburetor Snap Ring
ABCIB
4075
83-5622
5622
Carburetor control arm
-
-
84-5946
5946
Low speed screw (eccentric) and spring early carburetor with needle attached
-
4011 early, 4012 early
85-5802
9176
Low Speed Disc w/O-ring
ABC IB ABCIB
4050, 4075
87-5665
5665
Needle valve assembly for early style with needle on carburetor
-
4011 early, 4012 early
99-9255
9255
Remote Needle Valve
ABC IB ABCIB
4050,4075
 
OLD STYLE SQUARE CARBURETOR
New Part No.
Old Part No.
Description
 
-
5220
Carburetor barrel spring early square carburetor
(use 83-0102)
 
-
7737
Needle (bent wire type)  
-
7739
Needle valve collet and lock nut  
27-0183
8669
idle needle O-ring  
-
8738
Carburetor Barrel (early square carburetor)  
85-0102
8741
Idle needle less O-ring  
-
8742
Idle needle housing  
83-8701
8743
Throttle Arm  
-
8761
early square carburetor complete  
-
8767
Idle adjustment screw and nut  
-
8785
Carburetor body  

NA -- Not Available (temporarily out of stock and may be available within the next 6 months)
NLA -- No Longer Available (not likely to be produced again)


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