Jetting suggestions? 72 GT380 with pod filters.

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JFISHSOLEVIBE
On the main road
Posts: 102
Joined: Mon May 09, 2011 10:06 am
Country: USA
Suzuki 2-Strokes: 1972 GT380, 1972 and 1969 Honda CB175
Location: Pittsburgh, PA.

Jetting suggestions? 72 GT380 with pod filters.

Post by JFISHSOLEVIBE »

So after a 2 year long project and one broken leg, it's to get back on the bike!

The motor and exhaust (fully baffled) is effectively stock, sans an electronic ignition and pod filters on each carb. I'm not necessarily looking for a performance "boost" per se, just a solid runner in all conditions. I've read time and again that it's a mistake to run anything that increases airflow without compensating on the fuel side of things. What would you guys recommend for the VM24sc in the way of rejetting? I believe the stock jet is #80 main. It starts and idles well on the stock jets now but I don't want to fry a piston at high rpms!

Thanks guys!

J
Craig380
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Re: Jetting suggestions? 72 GT380 with pod filters.

Post by Craig380 »

What make of pods are they? There have been several threads recently discussing pod filters, and the conclusion is that not ALL makes of pod filter will flow more than the standard airbox, it depends on the type of filter material used (foam, pleated cloth, etc etc).

You could try taking it gently and riding around using up to half throttle (and not more), taking it relatively gently for a while and then check the plugs for colour. If they look OK, start riding a little harder, and keep checking the plug colour frequently until you're sure the jetting is safe.
1976 GT380 - wounded by me, and sold on
2006 SV650S - killed by a patch of diesel and a kerb in Feb 2019
2017 SV650 AL7 - naked and unashamed
JFISHSOLEVIBE
On the main road
Posts: 102
Joined: Mon May 09, 2011 10:06 am
Country: USA
Suzuki 2-Strokes: 1972 GT380, 1972 and 1969 Honda CB175
Location: Pittsburgh, PA.

Re: Jetting suggestions? 72 GT380 with pod filters.

Post by JFISHSOLEVIBE »

Thanks a lot! This forum is so helpful! (A grave contrast with a lot of the other forums out there)

The pods are pleated paper/fabric material with a wire mesh outside. The carbs are set up with the stock jets currently. Ill give it a few days to settle in and check back with results on be plugs.
Craig380
Expert racer
Posts: 1254
Joined: Mon Dec 01, 2008 2:52 am
Location: Manchester, UK

Re: Jetting suggestions? 72 GT380 with pod filters.

Post by Craig380 »

Just remember to take it easy and don't be tempted to 'give it some' to see what happens, until you're fully confident the carb settings are close!

Even when pulling away from rest, or at up to half throttle, you will soon know if the pods are making it run too lean.
1976 GT380 - wounded by me, and sold on
2006 SV650S - killed by a patch of diesel and a kerb in Feb 2019
2017 SV650 AL7 - naked and unashamed
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Coyote
Moto GP
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Joined: Tue Oct 21, 2008 2:41 pm
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Suzuki 2-Strokes: GT550x2, GT750, GS1000
Location: Tulsa, Oklahoma

Re: Jetting suggestions? 72 GT380 with pod filters.

Post by Coyote »

Way too often, guys with pods forget to oil them. Oiling is IMPORTANT! Not too much though. K&N makes a pod oil in a spray can. You need to 'mist' them till they are moist, but not wet. The K&N oil is red so it's easy to see what you are doing. I run cheapo pods, but I do use this oil.

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I was born with nothing and still have most of it left.

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1978 GS1000C
1976 GT550 ongoing money pit.
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