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Pod filter rejetting 79 425

  • Thread starter Thread starter sulacet
  • Start date Start date
S

sulacet

Guest
Hey guys,

I'm rebuilding my GS 425. I don't want to put back in the airbox, so I'm going to use K&N pods. I just replaced the engine with another 425 engine after blowing a piston in my old one. My questions:

1) What are the measurements around the bell housing? (I think that's what it's called, it's where the pods will meet the engine.)

2) What do I need to know about my carbs? I'm about to rebuild them, and I know I'll have to rejet them with the air filter so I was curious about sizes. I also know I'll probably need to richen up my mixture a bit. Any input on how many turns with the new filters?

3) I am actually having trouble finding carb rebuild kits for my specific bike. Is there any solution to this? Can I just buy the jets, gaskets, etc. separate?

Any other advice is appreciated. Unfortunately, I have settled on the pods though. The airbox is not going back on my bike. :)
 
Last edited:
"Unfortunately, I have settled on the pods though. The airbox is not going back on my bike"

Me, I'd get this new-to-you engine running right with stock airbox setup-then you have a base to work from before making the leap to podspace.
 
I don't know how similar the 425 carbs are to the 450, but here is my thread on getting my 450 right with good (K&N) pods and a fairly free breathing custom 2 into 1 pipe:

http://www.thegsresources.com/_forum/showthread.php?t=207055

There is a write up on the 450 carb rebuild somewhere here:

http://members.dslextreme.com/users/bikecliff/

I understand the no airbox thought, the 450 frame seems to be built around the airbox so I assume the 425 is no different.

Having said that, getting it running with the airbox first is probably a good idea, but if you can't just make sure you re-jet properly and don't make it too lean!

Don't get a carb rebuild kit from eBay etc., instead get all your O rings from here:

http://cycleorings.com/

And buy genuine Suzuki float bowl gaskets and choke gaskets.

Try to stick with genuine Mikuni jets if you can from somewhere like Jets R Us or something.

Just my 2c...
 
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