Dell'Orto carburetors Slide needle specifications Slide needle specifications for PHBH carburetors (X slides)

Updated: 2006 Jan 12

This information was gleaned from eurocarb. I meticulously recreated the table of values from a difficult to read original. Therefore, mistakes may be present. Here is a link to the original image in case you would like to scrutinize any particulars.

PHBH carburetor slide …

PHBH carburetor slide needle

Table:

Type	Value X	Characteristic expressed in millimeters
Type	Value X	ØA	ØB	C	ØD	E
X1	1	2.48	1.20	26	-	-
X2	2	2.50	1.80	24	-	-
X3	3	2.46	1.60	22	-	-
X4	4	2.48	1.80	20	-	-
X5	5	2.46	1.80	24	-	-
X6	6	2.50	1.20	26	-	-
X7	7	2.50	1.50	20	-	-
X8	8	2.50	1.40	26	-	-
X9	9	2.50	1.40	18	-	-
X10	10	2.50	1.40	20	-	-
X11	11	2.50	1.40	22	-	-
X12	12	2.50	1.80	18	-	-
X13	13	2.50	1.80	22	-	-
X14	14	2.50	0.80	24	-	-
X15	15	2.50	0.80	26	-	-
X16	16	2.50	0.80	28	-	-
X17	17	2.50	1.20	24	-	-
X18	18	2.50	1.20	28	-	-
X19	19	2.45	1.00	28	-	-
X20	20	2.42	1.00	22	-	-
X21	21	2.50	1.00	20	-	-
X22	22	2.48	1.20	25.5	-	-
X23	23	2.48	1.20	26	-	-
X24	24	2.50	1.00	30	-	-
X25	25	2.50	1.80	25	-	-
X27	27	2.48	1.40	20	-	-
X28	28	2.50	1.20	26	2.38	20
X29	29	2.50	0.60	30	-	-
X30	30	2.50	1.00	28	2.30	20
X31	31	2.48	1.20	28	-	-
X32	32	2.48	1.50	24	-	-
X33	33	2.50	1.00	32	-	-
X34	34	2.48	1.20	29	2.34	15
X35	35	2.48	0.80	25	2.32	20
X36	36	2.53	0.60	30	-	-
X37~	37	2.53	0.60	30	-	-
X38	38	2.48	1.20	28	2.28	20
X39	39	2.50	0.80	26	2.33	20
X40	40	2.50	0.80	27	2.33	24
X41	41	2.48	1.00	29	2.43	27
X42	42	2.53	0.65	29.25	-	-
X43	43	2.50	0.80	24	2.38	18
X44	44	2.46	1.80	22	-	-
X45	45	2.48	0.80	24.5	2.30	18
X46	46	2.50	1.20	23	-	-
X47	47	2.50	1.80	30	2.35	15
X48	48	2.47	1.80	29	-	-
X49	49	2.50	1.20	22	-	-
X50	50	2.50	1.20	25	-	-
X51	51	2.50	1.20	24	2.37	18
X52	52	2.52	0.98	29.46	-	-
X53	53	2.53	0.60	28	2.40	24
X54	54	2.50	1.30	20	2.35	20
X55	55	2.51	0.98	29.25	-	-
X56	56	2.50	0.80	26	2.36	22
X57	57	2.50	0.98	20.05	-	-
X58*	58	2.50	0.60	30	-	-
X59	59	2.50	1.00	21	-	-
X60	60	2.54	1.00	28	-	-
X61	61	2.46	1.50	20	-	-
X62	62	2.50	1.00	30	2.31	22
X63	63	2.50	1.20	27	-	-
X64	64	2.50	1.50	30	2.31	22
X65	65	2.52	1.00	34	-	-
X66	66	2.53	0.98	29.65	-	-
X67	67	2.52	1.00	32	-	-
X68	68	2.45	1.80	28.14	-	-
X69*	69	2.52	0.98	29.45	-	-
X70	70	2.52	0.65	29.09	-	-
X71	71	2.48	1.00	29	-	-
X72*	72	2.52	1.02	29.55	-	-
X73	73	2.52	1.02	29.55	-	-
X74	74	2.52	1.00	30	-	-
X75	75	2.52	1.60	29	-	-
X76	76	2.52	1.60	29.36	-	-
X77	77	2.48	0.80	26	-	-
X78	78	2.52	1.55	29.22	-	-
X79	79	2.51	1.01	28.17	-	-
X80	80	2.50	1.20	26	-	-
X81	81	2.48	1.00	24	-	-
X82	82	2.53	0.98	29.45	-	-
X83	83	2.53	0.98	28.85	-	-
X84	84	2.52	0.98	29.45	-	-
X85	85	2.48	1.00	32	-	-
X86	86	2.50	1.60	29	-	-
X87	87	2.54	1.40	30	-	-
X88	88	2.50	1.20	28	-	-
* Constructed of anodized aluminum ~ Differs from X36 in length; X37 has a length of 56.2

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