Basic Question re Main Jet Upgrade

Wekadog · 09-23-2012, 05:17 PM

I've just about made up my mind to do the needle jet / main jet / air filter mods described in this forum to boost my freeway performance. I'm committed enough to do my research and maybe buy a few supplies.

When I went Googling for a Suzuki Mikuni 140 main jet, I quickly realized there were a wide range of jets answering that description, Short ones, Long ones, Round ones, Hex ones, even plastic ones.

It's obviously important to get the right one. What's a more complete description of the jet I need to buy, so I don't end up with the wrong thing?

Cheers!

Rookie Rider · 09-24-2012, 12:16 AM

I suggest you take out the one in the bike and bring it with you to any motorcycle repair shop/garage. They will have plenty. I ordered mine by phone and went to pick it up, brought it home, took out the one on the bike and tried to put the new one in but couldnt. Why ? Cause the threads were different. I was pissed.

raul10141964 · 09-24-2012, 11:23 AM

small mikuni main jet
$5.00 at the dealer

**jonathan180iq** · 09-24-2012, 11:33 AM

This is what you're looking for.

Rookie Rider · 09-24-2012, 03:58 PM

Suzuki dealer couldnt sell me 1, had to buy the 4 pack, like $12.00 i think.

Water Warrior 2 · 09-24-2012, 09:50 PM

Quote:

Originally Posted by Rookie Rider

Suzuki dealer couldnt sell me 1, had to buy the 4 pack, like $12.00 i think.

Were they all the same size or a variety pack?

Back in 2008 Lynda needed 3 spokes for the rear wheel. Had to buy a full pack of 36. Not impressed with GWN prices. $140.

Wekadog · 09-24-2012, 10:43 PM

Ah, the picture and the keyword "small" give me a lot of confidance in finding the right part. I'm really looking to mail-order the parts. I just don't want to take an hour out of my Saturday to ride to the dealer.

I see eBay sellers have then at $6 each or 4/$10 - intended for quad carbs, I suppose. It hardly makes sense to buy just one.

raul10141964 · 09-25-2012, 11:15 AM

in my town is a no specific motorcycle dealer an they sell singles

**jonathan180iq** · 09-25-2012, 02:58 PM

You don't have to ride the bike over there, if there is a local shop.
Walk into the parts dept, ask to look at some main jets and see if they'll let you just pick some out. That's what I do.

Ebay is also good. That's how I got one for the Scooter one time. I'm not the most patient person but it all worked out in the end.

Rookie Rider · 09-29-2012, 11:42 PM

Suzuki stealer is where i ordered mine, the 4 in a pack WITH THE WRONG THREADS.

09-23-2012, 05:17 PM	#1
Wekadog Junior Member Join Date: Sep 2012 Location: Moorpark, Ventura Co, California Posts: 8	Basic Question re Main Jet Upgrade I've just about made up my mind to do the needle jet / main jet / air filter mods described in this forum to boost my freeway performance. I'm committed enough to do my research and maybe buy a few supplies. When I went Googling for a Suzuki Mikuni 140 main jet, I quickly realized there were a wide range of jets answering that description, Short ones, Long ones, Round ones, Hex ones, even plastic ones. It's obviously important to get the right one. What's a more complete description of the jet I need to buy, so I don't end up with the wrong thing? Cheers! Login or Register to Remove Ads
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09-24-2012, 12:16 AM	#2
Rookie Rider Senior Member Join Date: Jun 2011 Location: Queens, NYC Posts: 1,263	Re: Basic Question re Main Jet Upgrade I suggest you take out the one in the bike and bring it with you to any motorcycle repair shop/garage. They will have plenty. I ordered mine by phone and went to pick it up, brought it home, took out the one on the bike and tried to put the new one in but couldnt. Why ? Cause the threads were different. I was pissed.
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09-24-2012, 11:23 AM	#3
raul10141964 Senior Member Join Date: Apr 2012 Location: Elkhart, Indiana Posts: 369	Re: Basic Question re Main Jet Upgrade small mikuni main jet $5.00 at the dealer Login or Register to Remove Ads
	1

09-24-2012, 11:33 AM	#4
jonathan180iq Super Moderator Join Date: Jan 2007 Location: Dalton, GA Posts: 3,996	Re: Basic Question re Main Jet Upgrade This is what you're looking for.
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09-24-2012, 03:58 PM	#5
Rookie Rider Senior Member Join Date: Jun 2011 Location: Queens, NYC Posts: 1,263	Re: Basic Question re Main Jet Upgrade Suzuki dealer couldnt sell me 1, had to buy the 4 pack, like $12.00 i think. Login or Register to Remove Ads
	0

09-24-2012, 10:43 PM	#7
Wekadog Junior Member Join Date: Sep 2012 Location: Moorpark, Ventura Co, California Posts: 8	Re: Basic Question re Main Jet Upgrade Ah, the picture and the keyword "small" give me a lot of confidance in finding the right part. I'm really looking to mail-order the parts. I just don't want to take an hour out of my Saturday to ride to the dealer. I see eBay sellers have then at $6 each or 4/$10 - intended for quad carbs, I suppose. It hardly makes sense to buy just one.
	0

09-25-2012, 11:15 AM	#8
raul10141964 Senior Member Join Date: Apr 2012 Location: Elkhart, Indiana Posts: 369	Re: Basic Question re Main Jet Upgrade in my town is a no specific motorcycle dealer an they sell singles
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09-25-2012, 02:58 PM	#9
jonathan180iq Super Moderator Join Date: Jan 2007 Location: Dalton, GA Posts: 3,996	Re: Basic Question re Main Jet Upgrade You don't have to ride the bike over there, if there is a local shop. Walk into the parts dept, ask to look at some main jets and see if they'll let you just pick some out. That's what I do. Ebay is also good. That's how I got one for the Scooter one time. I'm not the most patient person but it all worked out in the end.
	0

09-29-2012, 11:42 PM	#10
Rookie Rider Senior Member Join Date: Jun 2011 Location: Queens, NYC Posts: 1,263	Re: Basic Question re Main Jet Upgrade Suzuki stealer is where i ordered mine, the 4 in a pack WITH THE WRONG THREADS.
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