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 die cast 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 identical 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.

 

 

The 8011 used many different carburetors. Originally as the Torpedo it had an aluminum carburetor with a coupled exhaust baffle. Neck diameter is either .437" or .530"

Later it used an Irvine Carb. This says Irvine on the front and was coupled to an exhaust baffle.

Next was a small body Perry carb (main needle had a spring behind it), also coupled to an exhaust baffle.

Used on 8011 and 4011...

Large body Perry with an O-ring sealed needle. Some linked to an exhaust baffle.

Used on 4011...

Large square K&B carb

Mixture disk K&B carburetor. Used needle on carb type until 1994, then remote needle type.

   
   
   
   
 
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, ABC IB, 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
ABC IB 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 Adapter
ABC
4050
-
4035
Tuned Muffler
ABC
4050
-
4080
Front Plate Assembly
ABC IB
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 ABC IB 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 ABC IB 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 ABC IB
4011 early, 4012 early, 4050, 4075
-
5968
Carburetor Body and Barrel
ABC IB IB ABC
4050, 4075
-
6834
Carburetor Snap Ring
ABC IB
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 ABC IB
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 ABC IB
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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