Jet Needle

[mack]

So I thought I found one and ordered it. Had the same stock number and all.45214116-00 the number on the needle itself is 5GL-16. What came was completely different. So if anyone has one laying around please PM me.

[RODS454]

Jet Needle

Can you post a picture, and what year model the carbs are? I might have what you need.

[mack]

Needle

Sorry it took so long, the only computer I can upload on crashed, just got it back.

This is what I'm searching for. If you look close you'll see it has only one c clip setting . the number stamped just under the c clip slot should end with a -16. This is from a set of 81 carbs. If you have one, how much and what type of payment do you wish? Send PM

[motoman]

Definitely looks to be an 81Special needle.......too short on taper to be the unobtanium 81Standard needle......

[mack]

maybe thats

what I got in the mail. Whats the serial number on the standard needle. Maybe I have one.

[motoman]

Don't quote me on this but think for the 81Standard it's 5IE26

[mack]

I'll check

tomorrow and get back to you. If it is you can have it if you need it.

[3Phase]

Dentures for a hen

what I got in the mail. Whats the serial number on the standard needle. Maybe I have one.

Mack, the '80/'81 Standard carburetors use a Mikuni 5IZ7 (Yamaha part# 360-14116-07-00) needle but good luck finding one. Unless you've changed the intake and exhaust they work with the staggered 115 outer/120 inner main jets.

The only new needles available are the Mikuni 5GL16 (Yamaha part# 452-14116-16-00 or a 3rd party knock-off) for the '80/'81 Specials and they work with the 110 main jets in all four carburetors.

[mack]

Yep

Thats what I'm looking for and thought I'd ordered. I got something completely different in the mail. I haven't been able to find a source, even georgefix doesn't list them.

[motoman]

Thanks for correcting that 3-Phase.

[3Phase]

Not a problem, 'man. We've both BTDTGTfrigginMikuniTS!

[mack]

Needle

Just a follow up. The needle I got in the mail has 5G4 stamped into it dispite the box being labled 452 14116-16-00/ 5GL -16. Not sure what it may be off, by the looks of it, probably a holly four barrel or something real big.

[3Phase]

just a follow up. The needle i got in the mail has 5g4 stamped into it dispite the box being labled 452 14116-16-00/ 5gl -16. Not sure what it may be off, by the looks of it, probably a holly four barrel or something real big.

Mack, I dug up the gypsy spreadsheet with Mikuni needle dimensions I found online and it says that your 5G4 needle should have 5 adjusting slots so it's hard to say what you've got there.

If it's just a typo on the number of slots the 5G4 should be the same length as the 1980-81 5IZ7 Standard needle but a little thinner (richer) and with only one taper.

Mark	Slots	Length	Dist.1	Dia 1	Dia2	K1	K2	K3	K4	K5	K6	A1	A2	A3	A4	A5	A6

5G4	5	51.800	2.600	2.515	0.000	21.500	0.000	0.000	0.000	0.000	0.000	1.50	0.00	0.00	0.00	0.00	0.00

5GL16	1	51.000	3.000	3.000	0.000	16.800	20.800	34.800	0.000	0.000	0.000	1.45	3.00	7.00	0.00	0.00	0.00

5GZ6	5	52.500	3.000	3.000	0.000	17.200	39.200	0.000	0.000	0.000	0.000	1.45	8.00	0.00	0.00	0.00	0.00

5IZ7	1	51.800	3.000	3.000	0.000	16.800	34.800	0.000	0.000	0.000	0.000	2.15	8.00	0.00	0.00	0.00	0.00

Mack = 5G4
1980-81 Special = 5GL16
1978-79 All = 5GZ6
1980-81 Standard = 5IZ7