RCU Forums - MRC .61

Yeah the muffler could be problem because in 1969 they weren't really making mufflers much for any engine brand. So they may have never made any for that engine at the time.
So you will likely have to fabricate something to work.

Frank Bowman makes rings for just about any engine imaginable. If he doesn't make the rings he only needs the piston and liner and he can make up a set for it. Contact him at [email protected]

Current rings that he lists are:
Reproduction Model Engine Rings

Quality at a fair honest price. Making a good ring is a Skill. Making a fine ring is an Art!

Last Revised 1 - 7 -11
I will reproduce nearly any model engine ring. If not available, I’ll need a good piston and cylinder to measure, or send motor. Send return postage, insurance is extra. For orders outside of USA, ask for shipping costs? Priority postage is extra. An order of 10 rings or more, discount of $1.00 off per ring, mixed orders are fine! Ring cost & shipping charges for USA listed below.
Please Note:
If you send me an engine for new rings that I don't currently make there will be No labor charge to do this.
If you send me the stripped down engine block ( Block, piston liner and rod assy.) for rings, that I Do currently make No extra charge.
If you send me a complete engine to disassemble, clean, and install the ring(s) and reassemble there will be a minimum charge of $25.00 per hour. My buisness is making Piston Rings and $25.00 is the minimum amount I would be losing by not making rings and working on your engine insted.
ATTENTION : NEW MEXICO CUSTOMERS WE HAVE TO CHARGE YOU 7.125% TAX, please add the extra tax to your orders.
Standard ring up to .65 engines: $9.00 ea.(1) shipped $13.00, (2) shipped $22.00 (1) .64 (2) $1.28
Standard ring from .66 & up: $10.00 ea.(1) shipped $14.00,(2) shipped $24.00 (1) .71 (2) $1.43
Dykes ring up to .65 engine: $10.00 ea.(1) shipped $14.00,(2) shipped $24.00 (1) .71 (2) $1.43
Dykes ring from .66 & up: $11.00 ea.(1) shipped $15.00,(2) shipped $26.00 (1) .78 (2) $1.57

** I also make special rings to order, ask for prices.**
Ace Twin .64
Aero .35
Aerrow 100 (pin) Quadra
Aerrow 200 (pin) Quadra
Aerovat 65 CC (pin)
Aircom M61 (pin)
Air-O .45
Anderson Spitfire .65
Area 51CC (pin)
Asp .52 4C, .61 (pin), .65 4/C, .80 4/C, .91 4/C
Atomic 60 Don Sohr
Atwood .49, .51, .63
Avion Mercury 1.609
Avistar .60 (pin)
Bantam .16
Bat .19
Bennelli 65 CC (pin) motorcycle
Berilli 36 CC (Pin)
BME 3.5 Twin (pin), 105 (pin), 110 twin (pin)
Brillelli 60 CC (pin)
Brison 2.4 (pin), 3.2 (pin)
Brown Jr. .60 cylinder sizes vary (send Piston & cylinder for proper fit & correct ring)
Brownie .29
Bushwacker 37.7 CC (pin) Sears
Bunch .45, .49
Cameron .15, .19
Cave Cobra
Chung Yang 29CC (pin)
Cleveland Tom Thumb .45
Comer 50CC (pin)
Como .29 (pin), .40 (pin), .51 (pin), .90 (pin)
Contestor D.60
CRRC Pro 26CC (pin), 40 CC (pin), 45 CC (pin)
CS .53 (pin)
Cub Cadet 25CC (pin)
DA 50 CC (pin) (2) different 1.678 Bore, & 1.681 Bore
DL 50 CC (pin)
DLE 20 CC (pin), 30 CC (pin), 55 CC (pin),110 Twin (pin), 170 Twin (pin), 222 4 cylinder (pin)
DME 100 Twin (pin)
Dooling .29, .61, Yellow Jacket
DZY 48 CC Twin (Pin)
Echo 16CC (pin), 21CC (pin), 21.2 CC (pin), 24.4 CC (pin), 30 CC (pin), CS-3000 (pin), 50 CC (pin)
Edco Sky Devil .64 Old or New (RJL) state which one?
Elf Andrea Heine Repo
Enya 3.5 (pin), .30 SS (pin), .35 X (pin), .40 X Dykes (pin), .40 Dykes model 6002, .40 4/C, .45, .45SS (pin), .46 4/C,.49 X (pin), 50SS (pin),.53 4/C, .60 4/C, .60 X (pin), .60 standard, .61 CXLR (pin), .80 X (pin), .80 4/C, .90 4/C, 120 4/C, 120 R 4/C, 1.55 4/C, 240 4/C Twin
ETA .29
EVO 150 Twin (pin)
EVRA 190
Forster .29, .31, .88, .99
Fox 36 Sand Cast (pin), .40 Sch., .45, .50, .59 .047 thick ring and .030, .59 long shaft Ign., .60 Blue Head, .60 Eagle, Fox Hawk
Red Head .60 (pin), .74, .78, 120 Twin (pin), Gas Bore 1.439 ? (pin)
GMS .61 (pin), .61 Dykes (pin), .76 Dykes (pin), 1.20 Dykes (pin)
Hassad Blue Streak .64
HB .21 Dykes,.25 Dykes, .40 PDP Dykes, .40 Black Head (pin), .50 Dykes, .61 (pin), .61 Dykes
Hiller (Car)
Hirobo 36 (pin)
Homelite 25 CC, 30 CC (pin) old .060 thick pin centered (press in ) , 30 CC newer .030 thick (pin), 30 CC new style Off set pin, 33 CC (pin), 38 CC (pin), 40.6 CC Super EZ Chain Saw, Super Mini Chainsaw Dykes (pin), 45 (pin), 50 CC (pin)
Horner 3.7 Twin (pin)
Hornet .19, .60
Howler .60 (pin)
HP .21 4/C Dykes ,.40 (pin) ,.61 R.I. Silver Star (pin), .61 Dykes (pin) Blk Case Gold Hd.
Hurluman 60
Husqvarna 2100 (pin) Chainsaw Pin needs pressed in 1/2 way
Irvine .20 Dykes, .25 Dykes, .36, .40 Pylon Dykes (pin), .40 Standard (pin), .46 MKII Q46 Dykes, .61 Dykes, 150 standard non pin.
JC Evo 28 CC (pin)
Kavan MK 50
KDC Kioritz 21.2 CC (pin), 23.6, 25 CC (pin), 30 CC (pin), 58 CC (pin)
K&B .35 Dykes, .40 Dykes, .40 S Dykes (pin), .61, .61 Dykes (Lee Custom), 1.35 (pin), 1.5 (pin)
Kometa 29
Kraft .61 (pin)
Kratmo 10 CC, 4A Ignition
Laser 61 4/C
Lewis 60
Magnum .52 RFS 4/C, .53 XL 4/C, .61 XL (pin), .61 4/C, 70 4/C, .91 XL 4C, 120 4/C, 120 (pin)
Maloney 100 (pin), 125 (pin)
McCoy .09, .19, .19 Dykes B.H., .21 Dykes Car, .29 all versions, .29 Dykes B.H., .35 Dykes B.H., .36, .40 Dykes B.H., .49, .55, .60, .60 Dykes
McCulloch 15 CC ? (pin) 1.024 Bore, 21 CC (pin), 25 CC (pin) MDB 90 Leaf Blower, 28 CC, 32 CC (pin),
MDL 28 CC (pin)
MDS .78 (pin), 1.48 (pin), 2.18 (pin)
Merco .40, .49, .49 Dykes, .50, .61, .61 Dykes
Micron 60
Moki M .51 (pin), .61 (pin), 1.20 (pin), 1.35 (pin), 1.50 (pin), 1.80 (pin), 2.10 (pin)
MT 42CC (pin), 57 CC (pin)
O&R Industrial Motor 1 HP
OPS Maxi .30 (pin)
OS .20 FS 4C, .26 4C, .28 FH Dykes (pin), .30 fs 4/c, .32 (pin), .37 H (pin), .40 H Dykes, .40H Standard, .40 H (P) Pylon, .40 FS 4/C, .40 SF (pin), .807 bore, .40 SR (pin), .40 FSR .835 Bore (pin), .40SR Dykes (pin), .45 FSR (pin), .45 FSR Dykes (pin),.45 RSR Dykes, .46FX (pin), .46SF (pin), .48 4/C Surpass, Max .50 old, .50 FSR Dykes (pin) ,.50 H (pin), .50 SX & SXH (pin), .52 4/C surpass, .58, Max-H .60, .60 FS 4/C, .60 FSR (pin) .9445 Bore ,.61 SF .9055 Bore (pin), .61 FS 4/C, .61 SX (pin), .61 SXH (pin), .65 RSR (pin), .70 4/C, .75 4/C Surpass, .80 H,.80 Dykes (pin), FS.90 4/C, .91Surpass 4C, .90 FSR (pin), .91 FSR (pin), .91 FX (pin), .91 SX H (pin), 1.08 BX-1 (pin), 120 4/C, 120 twin 4/C, 120 AX (pin), 160 FX (pin), 160 4/C, BGX-1 3500 (pin)
Poulan 25CC (pin), 25 CC Featherlite (pin), 32CC (pin), 35 CC (pin), 42 CC (pin), 42 CC Wildthing (pin), 46 CC (pin), 54 CC (pin), 60 CC (pin)
Profi .40 (pin), .61 (pin), .76 (pin)
Quadra 35 CC , 40 CC (pin), 42 CC (pin), 50 CC (pin), 100CC Aerrow (pin), 150 Twin (pin) , 200 CC Aerrow Twin (pin)
Quick Draw CC (pin)
RCGF 20 CC (pin)
RCS 1.40 (pin)
Ross .60 Dykes (pin), .60 opposed twin Dykes (pin), .61 (pin)
Rossi Speed .60 old, .60 (pin) .021, .61 (pin) .023, .65 (pin) .0235, Speed .65 (pin)
Royal 40 (pin)
Ryobi 26 mm Bore EJ 100 (pin), 31CC (pin) older .064 thick, 31 CC (pin) newer .047 thick
Saito FA .30 4/C, .40 4/C, FA .45 4/C, FA .50 4/C, FA .56 4/C, FA .60 Twin 4/C , FA .65 4/C, 72 4/C, FA .80 4/C, FA 82 4/C, .91 4/C, 100 4/C, 120 4/C, FA125 Golden Knight 4/C, FG 20 125 4/C, 130 TD 4/C Twin, 150 4/C, 180 4/C, 270 4/C Twin, 300 4/C Twin
Sachs 2.0 (pin), 3.2 (pin) offset, 3.2 (pin) centered, 5.8 (pin)
Sap-180 HP 1.2 (pin)
Scott Thunderbird
Sears Weedeater, Bushwacker,18 CC, 21 CC, 25 CC, 25 CC TWC Leaf Blower, 37.7, all pinned, 1966 Allstate Moter Cycle engine made by Puch (pin)
Shindiawa 33 CC (pin)
SIFK 29CC (pin) AKA CY, Chun Yang
Skil chainsaw (pin)
Sky Chief .53
Spe 25.4 (pin), 26 CC (pin), 40CC (pin), 45CC (pin)
Stihl 25.4 (pin), 028 Chain Saw 44 CC (pin), Super 45 (pin), 57 CC (pin), MS 440 Chainsaw 70 CC (pin)
Super Tigre G20.15, G20 .19, G20 X.25, S .29 (pin), G21.29 old, .34 (pin), .40 Bullring, S.40 (pin), G21.40 std., G21 .40 Dykes, G21.46 std. ,S.45 (pin), V.45, X.45 (Pin), G21 .46 wide Dykes, G.46, G .46 Bullring, V 51, G51 (pin) Italian, G51 (pin) China, V.56, V.56 Dykes, V 60 light case .044 or .047 top to bottom measurement, G24 60 Old, G 60 Bluehead, X60 (pin), V.60 wide & narrow Dykes, S.61 (pin), G.71, S.75 (pin), .90 (pin), 2000 (pin), 2300 (pin), 2500 (pin), 3000 (pin) Italian, 3000 (pin) China, 3250 (pin) Italian, 3250 (pin) China, 4500 (pin)
Syncro B-30, Syncro ACE, Syncro ACE Special
Tartan 1.34 (pin), Twin .77 (pin)
Tech 23CC (pin)
Technipower 7 Cylinder radial, B series, 9 cylinder
3MM 53 TOC (pin)
3W 26 CC (pin), 80 CC Boxer Twin (pin)
Thunder Tiger .39 (pin), Pro .50 H (pin), .53 Red Line Heli (pin), .54 4C, .91 FS 4C, 120 Pro (pin)
Toki .40 (pin)
Ueda .45, .61
US 25 CC (pin)
Vlvatam 2.5, 5 CC
Veco .21 Dykes, .50 Dykes, .61, .61 Dykes
Vega 10CC, 91 4/C
Webra .32 Speed Dykes (pin), 35 (pin), 10 ccm, 6.5 (pin), .40, .40 (pin), .40 Dykes (pin), .50 Dykes (pin), 52 (pin), .55C AAR Red Head Heli (pin), .61, .61 (pin), Speed .61 FS (pin), Speed .61 F Dykes (pin), .61 Dykes (pin), Speed 70 (pin), T480 4C, .91 (pin), 91 PS (pin), 120 Dykes (pin), 1.2 LS (pin), 91 (pin) T 4.90, 35 CC? Bully (pin)
Weedeater 18 CC (pin), 21CC (pin), 25CC (pin) 1.358 Bore, 25CC (pin) 1.380 Bore, 22 CC (pin), 32CC (pin)
Weedwacker 25CC (pin)
Westbury Atom III
Yamaha 50CC (pin)
YS .61 Long Stroke (pin), .63 4/C, .80 H (pin) 2C, F.91 AC 4C, .91 2C (pin), 110 4/C, F120 4C
YW 24CC single & 48CC Twin (pin)
ZDZ 40 (pin), 50 NG RV (pin), 60 RV (pin), early 80 RV (pin), later 80 - J model (pin)
ZEN G270 (pin) AKA Chung Yang
Zenoah G20 (Pin), G23 (pin), G26 (pin), G38 (pin), G45 (pin), G62 (pin), GT-80 Twin (pin)