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To DynoJet or not to DynoJet

  • Thread starter Thread starter kacken
  • Start date Start date
K

kacken

Guest
Hey all, I apologize if this has been asked before and I'm sure I'll get the raging "didn't you search" answer, but I couldn't quite find anything I was looking for. Still new and learning a lot so any advice, tips, etc would be greatly appreciated.
Today's topic: pods and dynojet kits.

I have an 81 Suzuki GS550L. Ran great all summer long, no complaints, while doing some aesthetic work I realized there is a hole in the boot between the air box and carbs. Not sure how the hell it got there, I can only assume its the work of some idiot as I share a garage with many people (I live in an apartment building down town Milwaukee). While I had the thing apart the thought of pods danced in my head. I have been researching and researching as much as I can before just pulling the trigger to avoid the typical novice freak out. That being said from what I understand from the PPP! Sticky is that with the later model CV carbs its best to go with a dynojet kit. However, that being said it doesn't seem like I can find one for an 81 GS550 on their website. I'm hoping someone might be able to point me in the right direction and any reconsiderations would be great.


Thanks!
 
Also, I don't plan on changing the exhaust as it is already a 4 to 1 style, not sure if that changes the kit I may or may not need
 
kacken said:
Also, I don't plan on changing the exhaust as it is already a 4 to 1 style, not sure if that changes the kit I may or may not need
Click to expand...
You'll need good pods and a dynojet kit to help avoid frustration. Since it "ran great", consider just replacing damaged airbox boot- how big a hole is it?
Z1 enterprises lists a kit for 82 550- not sure why the 81 isn't included?
here's the one for the 650 probably real close to what you would need as far as main jet size and needle BUT I'm unsure

http://www.z1enterprises.com/ItemDe...on=Dynojet+Carb+Kit+GS650+1981-82&item=DJ3310
 
tom203 said:
You'll need good pods and a dynojet kit to help avoid frustration. Since it "ran great", consider just replacing damaged airbox boot- how big a hole is it?
Z1 enterprises lists a kit for 82 550- not sure why the 81 isn't included?
here's the one for the 650 probably real close to what you would need as far as main jet size and needle BUT I'm unsure

http://www.z1enterprises.com/ItemDe...on=Dynojet+Carb+Kit+GS650+1981-82&item=DJ3310
Click to expand...

other than K&N is there a preferred reputable "good pod"?
I considered just replacing the boot, however I really like the clean center look for my cafe/brat project. I like how clean it looks. But hey, that's just me.


tom203 said:
Is this your setup? Where's this hole?

http://www.ebay.com/itm/1981-Suzuki...Parts_Accessories&hash=item35ddcb30ef&vxp=mtr
Click to expand...

Tom, that is indeed the set up. If you're sitting on the bike the hole is on the right size. About the size of a pen. The bike has since been relocated to the in-laws garage, but its rather crammed in there. Its the winter project until spring rolls around.
 
tom203 said:
You'll need good pods and a dynojet kit to help avoid frustration. Since it "ran great", consider just replacing damaged airbox boot- how big a hole is it?
Z1 enterprises lists a kit for 82 550- not sure why the 81 isn't included?
here's the one for the 650 probably real close to what you would need as far as main jet size and needle BUT I'm unsure

http://www.z1enterprises.com/ItemDe...on=Dynojet+Carb+Kit+GS650+1981-82&item=DJ3310
Click to expand...


I do believe that the kit would work for you. I have a stage one installed on my 1100 with pods and went with recommended jets included in the kit for my situation and adjusted the needle. Many here will tell you not to use the jets included and go through a huge process to get it right.

If you go with pods and a kit with 4/1 pipes, consider going up one size on the pilot jet.

JMO

V
 
Thanks for the recommendations. I think I should be good to go with whatever comes in the kit. Correct me if I'm wrong, but I'm pretty sure the 81 GS550L came with a 4 to 1 on it stock. At least thats what it sure seems like to me. Only one way to find out. Order it up and give it a shot.

gustovh, so just I understand, what sort of needle adjustments are needed?
Still learning alot

Thanks!
 
You would be changing the needles in the slides with the ones in the kit. Each of them has a series of notches at the top that is used to clip the needles to the slides. Moving the clip up or down on the needle enriches or leans the fuel mixture for mid and high rpm.

For example, I was running very lean in the 6-7000 rpm range, so with Chef1366's advice, I raised the clip and lost the washer, game over. That part by the way is not in the instructions.

V
 
Can someone tell me what the rubber hose that runs from the engine to the factory boot is and what it accomplishes?
 
Crankcase/valve cover vent hose. If you run pods, it is a good idea to place a filter or wrap a rag around the end that hangs down.

V
 
If you're bored and like the pod look, spend some money. Otherwise just patch the "pen" size hole. In any event ,if bike is going to be sitting for the winter ,make sure you run some stabil thru it now or carb fun will be on your spring to-do list
 
If I go the patch route, any suggestions on best way to patch it up?
 
kacken said:
If I go the patch route, any suggestions on best way to patch it up?
Click to expand...
So many methods come to my mind, it's scary. How about using the hole to stick a fiber optic camera ( borescope) in there so you can watch/record the vacuum slides go up and down? I'm sure someone has done this , but I need a link!
 
gustovh said:
You would be changing the needles in the slides with the ones in the kit. Each of them has a series of notches at the top that is used to clip the needles to the slides. Moving the clip up or down on the needle enriches or leans the fuel mixture for mid and high rpm.

For example, I was running very lean in the 6-7000 rpm range, so with Chef1366's advice, I raised the clip and lost the washer, game over. That part by the way is not in the instructions.

V
Click to expand...

I have a question, im having issues with my 1980 GS 850 with stage 3 Dynojet, ive cleaned the carbs and when i get to 4500-6000 RPMs it bogs down running too lean.

would you recommend going down to stage 1 and change the main jest to 155?

I have a 4 to 1 Vance & Hines exhaust with pods.
 
You might want to consider starting a new thread on YOUR problem as to not distract from kacken's thread.
 
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