75 Gt500: New replacement carb

Suzuki two-stroke bikes and parts, one man's treasure is another man's treasure!

Moderators: oldjapanesebikes, H2RICK, diamondj, Suzsmokeyallan

Post Reply
GT500-2stroke
Around the block
Posts: 80
Joined: Wed Aug 22, 2018 10:55 pm
Country: USA
Suzuki 2-Strokes: GT100, GT500

75 Gt500: New replacement carb

Post by GT500-2stroke »

I am tempted to try the new replacement carb from eBay.
But want to ask folks here before i buy.

https://www.ebay.com/itm/US-Stock-Motor ... SwNOxbmhc-" onclick="window.open(this.href);return false;

1. I am facing stuck starter plunger in one carb situation. It is taking longer than expected to take out plunger.
( and my patience is almost running out :cry: )
2. So I am trying to decide alternative solution, at least temporarily.
3. Should I just buy this carb and move on?
4. I don't want to replace both carbs if possible, so will there be any problem if I go with just one new carb ( while the other carb is original ) ?
5. Has anybody used this carb? Would you recommend it?

Appreciate any/all help..
Zunspec4
Expert racer
Posts: 1087
Joined: Tue Dec 16, 2008 11:37 am
Country: UK
Suzuki 2-Strokes: T500R, SV1000S, TS125, Seeley T500
Location: Trowbridge UK

Re: 75 Gt500: New replacement carb

Post by Zunspec4 »

I think the difference between that carb and the original would give you very big headaches to match them during set up. In principle it could be done but is just far far too much hassle. Get a new pair and the set-up is much easier.

Cheers Geoff
Last edited by Zunspec4 on Sat Sep 15, 2018 5:13 pm, edited 2 times in total.
User avatar
jabcb
Moto GP
Posts: 4240
Joined: Mon Dec 13, 2010 4:32 pm
Country: USA
Suzuki 2-Strokes: 69 T350 thru 75 GT750
Location: southwestern Pennsylvania

Re: 75 Gt500: New replacement carb

Post by jabcb »

Use the-pen-is-mightier-than-my-mechanics-skills solution. That’s what I do when faced with problems beyond my meager skill set.
(The pen is what I use to sign the check to pay for the work — it gets a lot of things done that I wouldn’t even try.)

Take the carbs to a shop that works on older bikes. They are used to dealing with all sorts of carb problems.
And don’t go to a new bike dealer —they won’t be interested on working on anything this old.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
User avatar
dorT500
To the on ramp
Posts: 253
Joined: Mon Jun 12, 2017 12:01 pm
Country: USA
Suzuki 2-Strokes: '75 T500M since '93 Ridden it over 100,000 mi
Location: Galveston County, Tx.

Re: 75 Gt500: New replacement carb

Post by dorT500 »

or soak it for a few more days and if by then, no joy, go ahead and soak in PB blaster for a day....sounds like you have nothing to lose......plunger seal and bore may be already past hope. If all else fails.............which side carburetor do you need? Could be 'nightmare city' if you start trying to make those carbs you are looking at work.

If I were you I would contact this very reputable ebay seller (Keith) and see if he has a single carb VM32SC (assuming you have the stock carbs) whatever side you need that he can list for you on his ebay store for late T500 or your '76 GT500A or '77 GT500B. * You want an externally vented one.* Very reasonable prices. Yes, usually sold in pairs by most but he may have a single you need.......never know until you ask.

https://www.ebay.com/usr/skully2strokes ... 7675.l2559" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick=

https://www.oldjapanesebikes.com/mraxl_ ... /index.php" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick=

Image

Chart via Ozebrook

That is the external vent I circled below
1977 GT500B
Image
_____________
______________________
_______________________________
GONE.......WITH A PUFF OF SMOKE AND A BLUR OF SPOKE
User avatar
dorT500
To the on ramp
Posts: 253
Joined: Mon Jun 12, 2017 12:01 pm
Country: USA
Suzuki 2-Strokes: '75 T500M since '93 Ridden it over 100,000 mi
Location: Galveston County, Tx.

Re: 75 Gt500: New replacement carb

Post by dorT500 »

Here is a left one ...........
https://www.ebay.com/itm/Suzuki-T500-19 ... SwHn9bhxpz" onclick="window.open(this.href);return false;
_____________
______________________
_______________________________
GONE.......WITH A PUFF OF SMOKE AND A BLUR OF SPOKE
User avatar
jabcb
Moto GP
Posts: 4240
Joined: Mon Dec 13, 2010 4:32 pm
Country: USA
Suzuki 2-Strokes: 69 T350 thru 75 GT750
Location: southwestern Pennsylvania

Re: 75 Gt500: New replacement carb

Post by jabcb »

dorT500 wrote:Here is a left one ...........
https://www.ebay.com/itm/Suzuki-T500-19 ... SwHn9bhxpz" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
Good find. That’s stamped with 15313, which is correct for later T500s & GT500s.
The complete part number is 13202-15313
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
GT500-2stroke
Around the block
Posts: 80
Joined: Wed Aug 22, 2018 10:55 pm
Country: USA
Suzuki 2-Strokes: GT100, GT500

Re: 75 Gt500: New replacement carb

Post by GT500-2stroke »

jabcb wrote:Use the-pen-is-mightier-than-my-mechanics-skills solution. That’s what I do when faced with problems beyond my meager skill set.
(The pen is what I use to sign the check to pay for the work — it gets a lot of things done that I wouldn’t even try.)

Take the carbs to a shop that works on older bikes. They are used to dealing with all sorts of carb problems.
And don’t go to a new bike dealer —they won’t be interested on working on anything this old.
Need to find someone near me ( SFO Bay Area, CA ), as I don't know anybody.
Might take longer to find out..
GT500-2stroke
Around the block
Posts: 80
Joined: Wed Aug 22, 2018 10:55 pm
Country: USA
Suzuki 2-Strokes: GT100, GT500

Re: 75 Gt500: New replacement carb

Post by GT500-2stroke »

dorT500 wrote:Here is a left one ...........
https://www.ebay.com/itm/Suzuki-T500-19 ... SwHn9bhxpz" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
Thanks, but I may need a right one ( Need to confirm which side I need )
GT500-2stroke
Around the block
Posts: 80
Joined: Wed Aug 22, 2018 10:55 pm
Country: USA
Suzuki 2-Strokes: GT100, GT500

Re: 75 Gt500: New replacement carb

Post by GT500-2stroke »

dorT500 wrote:or soak it for a few more days and if by then, no joy, go ahead and soak in PB blaster for a day....sounds like you have nothing to lose......plunger seal and bore may be already past hope. If all else fails.............which side carburetor do you need? Could be 'nightmare city' if you start trying to make those carbs you are looking at work.

If I were you I would contact this very reputable ebay seller (Keith) and see if he has a single carb VM32SC (assuming you have the stock carbs) whatever side you need that he can list for you on his ebay store for late T500 or your '76 GT500A or '77 GT500B. * You want an externally vented one.* Very reasonable prices. Yes, usually sold in pairs by most but he may have a single you need.......never know until you ask.

https://www.ebay.com/usr/skully2strokes ... 7675.l2559" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick=

https://www.oldjapanesebikes.com/mraxl_ ... /index.php" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick=

Image

Chart via Ozebrook

That is the external vent I circled below
1977 GT500B
Image
Got it.
Will go mostly along the route you suggested above.

BTW, I need to ask Keith about the 'externally vented' specifically ?
Or wil he understand by the year and model number ? ( 1975 GT500 )

Thanks, appreciate it.
GT500-2stroke
Around the block
Posts: 80
Joined: Wed Aug 22, 2018 10:55 pm
Country: USA
Suzuki 2-Strokes: GT100, GT500

Re: 75 Gt500: New replacement carb

Post by GT500-2stroke »

If I were you I would contact this very reputable ebay seller (Keith) and see if he has a single carb VM32SC (assuming you have the stock carbs) whatever side you need that he can list for you on his ebay store for late T500 or your '76 GT500A or '77 GT500B. * You want an externally vented one.* Very reasonable prices. Yes, usually sold in pairs by most but he may have a single you need.......never know until you ask.

That is the external vent I circled below
1977 GT500B
Image[/quote]

Just for my learning, what is special about the external vent in this case?
Are you trying make sure that I order correct one or something else?

Does this mean that there are carb models for GT500 which are not 'externally vented' ?

Just want to understand more..Thanks.
GT500-2stroke
Around the block
Posts: 80
Joined: Wed Aug 22, 2018 10:55 pm
Country: USA
Suzuki 2-Strokes: GT100, GT500

Re: 75 Gt500: New replacement carb

Post by GT500-2stroke »

dorT500 wrote:or soak it for a few more days and if by then, no joy, go ahead and soak in PB blaster for a day....sounds like you have nothing to lose......plunger seal and bore may be already past hope. If all else fails.............which side carburetor do you need? Could be 'nightmare city' if you start trying to make those carbs you are looking at work.

If I were you I would contact this very reputable ebay seller (Keith) and see if he has a single carb VM32SC (assuming you have the stock carbs) whatever side you need that he can list for you on his ebay store for late T500 or your '76 GT500A or '77 GT500B. * You want an externally vented one.* Very reasonable prices. Yes, usually sold in pairs by most but he may have a single you need.......never know until you ask.

https://www.ebay.com/usr/skully2strokes ... 7675.l2559" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick=

https://www.oldjapanesebikes.com/mraxl_ ... /index.php" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick=

Image

Chart via Ozebrook

That is the external vent I circled below
1977 GT500B
Image
Success finally!

1. Soaked for two days in diesel.
2. Heated (medium heat) on third day and put in diesel for 1 day
3. On fourth day, heated crap out of it! until it turned! :twisted:

Thank you all so much for your support!
Appreciate it.
Post Reply