Engine Dimensions - Metric

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Two-Stroke Engines for Fixed Wing R/C Aircraft
	A	B	C	D	E	F	G	H	J	S
10FP, 10FP-S	31.4	11	54	38	58.2	38.7	23	33.2	45.2	M5
10LA	31.4	11	54	38	56	38.7	23	33.2	45.2	M5
15CV-A	33	14.4	63.7	40	61	39.5	24.8	30.8	48.5	M5
15FP, 15FP-S	33	14.4	56.5	40	63.2	39.5	24.8	30.8	50.2	7/32-32
15LA, 15LA-S	33	14.4	56.5	40	61	39.5	24.8	30.8	48.5	M5
20FP, 20FP-S	36	14	66.5	45	74.5	46.5	29	39.5	60	1/4-28
25FP, 25FP-S	36	14	66.5	45	74.5	46.5	29	39.5	60	1/4-28
25FX	38	15	75.6	46	75.5	53	30	45.5	60	1/4-28
25LA, 25LA-S	36	14	67.5	44	74.5	46.5	29	39	60	1/4-28
25LA-S	37	15	87.1	48	74.4		28			1/4-28
30 Wankel Rotary			60.5	65.7	58.3					1/4-28
32SX	38	15	75.5	45	73	53	30.3	45.5	60	1/4-28
40FP, 40FP-S, 35FP, 35FP-S	40.5	17.5	74.2	48	82.2	51.2	32	42.5	66	1/4-28
40LA, 46LA, 40LA-S, 46LA-S	40.5	17.5	74.5	48	85	51.2	32	42.5	69	1/4-28
46AX	44	17.5	85.2	51	85.2	60.4	35		67.4	1/4-28
46FX, 40FX	44	17.5	85	51	88	60.5	35	52	70	1/4-28
46VX-DF RC	44		116		91		35			1/4-28
50SX	44	17.5	85.7	52	88.8	60.7	36		70.5	1/4-28
55AX	44	17.5	85.3	51	90.5	60.4	36	52	72	1/4-28
60FP	52	25	92	61	102	64	42	51.5	81	5/16-24
61FX	52	25	95.6	61	100.5	66.5	43	54	79	5/16-24
65LA	52	25	64	62	85.4	64	42		85.4	5/16-24
65VR-DF	52	25	133.5	61	101.7	66	43.4	53.5	79.7	5/16-24
91FX	52	25	96	61	103	66.5	42.6	54	81.5	5/16-24
91VR-DF	52	25	133.5	61	109.5	66	43.5	53.5	87.5	5/16-24
91VR-DF (small head)	52	25	133.5	61	103.5	66	43.5	53.5	81.3	5/16-24
1.08FSR	58	30	108	70	119	75	48	60	95	3/8-24
120AX	58	25	100.2	67	109.2	69.8	46.5		85.7	5/16-24
140RX, 1.40RX-FI	58	25	105	70	118.4	78	48.4		93.9	5/16-24
160FX, 1.60FX-FI	64	30	115.5	74	123.2	80	51.5		96.7	3/8-24
BGX-1	74	32	129.5	85	142.5	99	60.5	83	111	3/8-24
Single Cylinder Four-Stroke Engines
	A	B	C	D	E	F	G	H	J	S
FL-70	45	20	103	54	107.5	59.5	35.4	49.5	89.5	1/4-28
FS-26	36	14	84	44	86.5	48.5	29	40	70	1/4-28
FS-30	36	14	112	44	86.5	75	29		71.5	1/4-28
FS-40	42	17.5	77.5	49	98	57	32.5	48.1	80.5	1/4-28
FS-52S, FS-52S Heli	44	17.5	80.5	51	101	59	34	49.3	83.5	1/4-28
FS-70	50	21	89	59	116.5	66	40	55.5	96	5/16-24
FS-70 II	50	21	111	58	116.7	66.3	39.6	55.8	96.4	5/16-24
FS-70 Ultimate-P	45	20	109.7	54	105.4	59.5	35.4	49.5	87.4	1/4-28
FS-91	52	25	91.5	60	121	66.5	42.6	54	99	5/16-24
FS-91 II, FS-91 II FI	52	25	114.5	60	123	66.5	42.6	54	101	5/16-24
FS-91S II-P	52	25	91.5	60	123	66.5	42.6	54	101	5/16-24
FS-120S-E	58	25	104	67	138.5	77	46	64.5	115	5/16-24
FS-120S III	58	25	134.5	67	139.5	77	46	64.5	116	5/16-24
FS-120S-SP	58	25	157	67	139	77	46	64.5	115	5/16-24
Helicopter Engines
	A	B	C	D	E	F	G	H	J	S
32SX-H, 32SX-HX	38	15	75	45	76	53	30.3	45.5	60.6	1/4-28
32SX-MX	38	15	127.4	45	82.5	85.7	30.6		58
37SZ-H	38	15	67.2	45	76.8	46	30.6		61	1/4-28
46FX-H	44	17.5	84.2	51	88	60.5	35	52	70	1/4-28
50SX-H	44	17.5	85.8	52	89	61	36		70.5	1/4-28
50SX-H Hyper	44	17.5	85.8	52	89	61	36	74	70.5	1/4-28
61LX-H	52	25		61		88.7	42.6		79	5/16-24
61RX-H WC	52	25	93	61	100.5	65	42.6	52.5	79	5/16-24
61RX-HG WC	52	25	80.5	61	100.5	52.5	43.6	40	79	1/4-28
61SX-H WC	52	25	93	61	100.5	65	42.6	52.5	79	5/16-24
61SX-HG WC	52	25	80.5	61	100.5	52.5	43.6	40	79	1/4-28
70SZ-H	52	25	81.3	61	99	55.3	42.6		77.5	5/16-24
91SX-H		25	82		109		42.6
91SX-H C-Spec-P	52	25	109.4	61		56.4	42.6		87.4	5/16-24
91SX-H C-Spec	52	25	83.4	61			42.6		87.4	5/16-24
91SZ-H	52	25	83.8	61		56.4	42.6		87.4	5/16-24
91SZ-H PH-Hyper	52	25	97.5	61	119.2	64.4	43	51.9	87.4	5/16-24
FS-52S Heli	44	17.5	80.5	51	101	59	34	49.3	83.5	1/4-28
Marine Engines
	A	B	C	D	E	F	G	H	J	S
10FP-M	31.4	11		38	64		23		51.5	1/4-28
10FP-MX	31.4	11		38	72				51.5	1/4-28
18CV-R-M	31.4	11	56	39		41	25		50.5	M5x0.8
20FP-M	36	14		45	76		29		61.5	1/4-28
21RZ-M	37	21		45	74.7		29.6		59.7	1/4-28
21VZ-M	37	21	65	45	89.1	44	30.8		73.8	1/4-28
32F-MX	38	15		45	87				63	1/4-28
46VX-M	45	21		53	87		37		68	1/4-28
61VR-M, .65 VR-M	52	25		61	104.3		43		84.3	5/16-24
81VR-M	52	25		61	105.5		43.4		84.1	5/16-24
Car & Buggy Engines
	A	B	C	D	E	F	G	H	J	S
10FP-B	31.4	11	54	38	67	38.7	23	33.2	55	M5
10FP-BX	31.4	11	72.7	38	67	38.7		33.2	55	M5
12CV	31.4	11	58.6	39	87.2	41	25	35.5	74.4	M5
12CV	31.4	11	58.6	40	90.2	41	25	35.5	70.7	M5
12CV-R	31.4	11	70	39	83.7	41	25		70.9	M5
12CV-RX	31.4	11	88.8	40	90.9	41	25		70.9	M5
12CV-X	31.4	11	74.8	39	87.2	41		35.5	74.4	M5
12TG	31.4	11	58.4	39	89.5	40.9	25.4	35.4	77	M5
12TR (P), 12TR (P)-T	31.4	11	52.5	39	84.4				71.6	M5
12TR, 12TR R-Spec	31.4	11	58.5	39	85				71.6	M5
12TZ (P) T3 Speed Tuned	31.4	11	52.4	39	87	34.9	25.4	29.4	74.5	1/4-28
12TZ (P)-T3 ABC	31.4	11	49.9	39		34.8	25.4		77.2	1/4-28
12TZ (P)-T5 ABC	31.4	11	49.9	39		34.8	25.4		77.2	1/4-28
12TZ (S)-T3 ABC	31.4	11	49.9	39		34.8	25.4		77.2	M5x0.8
12TZ-T3 ABC	31.4	11	55.9	39		40.8	25.4		77.2	M5x0.8
15CV	31.4	11	58.6	39	90.2	41	25		70.7	M5
15CV-M	31.4	11	58.5	40	65
15CV-MX	31.4	11	91	40	65
15CV-R	31.4	11	56	39	83.9	41	25		71.1	M5
15CV-RX	31.4	11	74.8	40	91.1	41	25		71.1	M5
15CV-X	31.4	11	74.5	39	90.2	41	25		70.7	M5
15RX	37	21	60	45	87.3	41.5	29	31	72.5	1/4-28
18CV-R	31.4	11	56	39	100.9	41	25		80.9	M5
18CV-R (P)	31.4	11	49.9	39	100.9	41	25		80.9	M5
18CV-RX	31.4	11	74.8	40	100.9	41	25		80.9	M5
18TM	31.4	11	53.6	39		34.8	25.4		81.2	M7x1
21RG, 21RG (P)	37	21	65.6	45	95.8	44	29.6	33.5	80.7	1/4-28
21RG-B, 21RG-B (P)	37	21	65.6	45	95.8	44	29.6	33.5	80.7	1/4-28
21RG-M	37	21	88.5	45	74.5	67	29.6		59.5	1/4-28
21RG-MX	37	21	107	45	74.5	67	29.6		59.5	1/4-28
21RG-X (P)	37	21	84	45	95.8	44	29.6	33.5	80.7	1/4-28
21RZ-B, 21RZ-B (P)	37	21	79	45	101	44	29.6	33.5	86	1/4-28
21RZ-R (P)	37	21	65.5	45	96.3	44	29.6	33.5	81.5	1/4-28
21RZ-V99B, 21RZ-V99B (P)	37	21	65.6	45	101	44	30.6	33.5	86	1/4-28
21VG	37	21	65.6	45	102.7	44	30.8	33.5	87.4	1/4-28
21VZB V-Spec	37	21	64.9	45	110.6	44	30.8	33.5	95.3	1/4-28
21VZB V-Spec	37	21	64.9	45	110.6	44.3	30.8	33.8	95.3	1/4-28
21VZ-B V-Spec-T (P)	37	21	64.9	45	110.6	43.9	30.8	33.8	95.3	1/4-28
21VZ-R, 21VZ-R Turbo II	37	21	64.9	45	99	43.9	30.8		83.7	1/4-28
21VG (P) ES	37	21	65.6	45	102.7	44	30.8	33.5	87.4	1/4-28
18TZ (P)	31.4	11	49.9	39		34.8	25.4		81.2	1/4-28
18TZ Turbo	31.4	11	55.9	39		40.8	25.4		81.2	M5x0.8
18TZ(S) Turbo	31.4	11	49.9	39		34.8	25.4		81.2	M5x0.8
18TZ-TX	31.4	11	75.3	39		40.8	25.4		81.2	M5x0.8
30VG (P)	37	21	65.6	45		44	30.8		97.7	1/4-28
30VG (P) ES	37	21	65.6	45	113	44	30.8	33.5	97.7	1/4-28
30VG (P) SR Savage	37	21	65.3	45		44	30.8		97.7	1/4-28
30VG (P)-X	37	21	82.5	45		44	30.8		97.7	1/4-28
FS-26S-C	36	14	57.8	43	84.6	39.8	29	32.8	70.4	1/4-28
FS-26S-C II	36	14	57.8	43	85.4	39.8			70.9	1/4-28
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Twin & Multi-Cylinder Four-Stroke Engines
	A	B	C	D	E	F	G	H	J	S
FR5-300	122			234	158.5					3/8-24
FF-320	68	56.5	23.5	196	181.5	112.5	125.5	76	62	5/16-24
FT-300	90	55	35	240	148	62	80	56	10	3/8-24
FT-160	68	56.5	23.5	196	120	50.5	63.5	54		5/16-24
FT-120II	68	56.5	23.5	196	120	50.5	63.5	54		5/16-24
IL-300 Dia-Star	76	40	50	116	234.3	173	113	48.6	40	3/8-24

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