• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

jet size for 8 valve 1100 w/pods and V&H????????

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

Guest
Anybody out there have an 8 valve GS1100 with pods and a 4 into 1 exhaust? If so, I would really appreciate knowing what size main jets you are running. I'm trying to get my 82 GS1100L set up, and the Dynojet kit appears to be way off....
 
I am not sure. I know with my 8 valve which is now bored to 1085 and a 4 into 1 V&H with K&N pods we are using dynajet 130 mains to start with. That is in 33mm smooth bore carbs. I am not sure yet if that will be right but it should be close. We are starting with the needle half way.
 
The K&N jet kit I got for my 82 GS1100L came with stage 3 jets sizes of 165 and 170. I've tried them both and the bike still bogs down at anyhting over 3/4 throttle. I'm thinking that These jets are way too big.
 
Man I am not the guy that knows I can tell you that but I agree that those jets sound way too big. I will sit back and let some of these guys that know their stuff from having more experience answer but I am thinking you would want to start with no larger than a 130 main but I could be wrong. What carbs are they?
 
You need to e-mail DynoJet. I just don't understand why the jets are that big for your application. My 16V 1100E with pods and pipe are just right at 138's and needle in the 3rd highest setting. I even had to look on the website to make sure you had the right jets, sure enough, stage III uses 165 and 170??? E-mail them, something seems fishy...
 
Hoomgar said:
Man I am not the guy that knows I can tell you that but I agree that those jets sound way too big. I will sit back and let some of these guys that know their stuff from having more experience answer but I am thinking you would want to start with no larger than a 130 main but I could be wrong. What carbs are they?
Click to expand...

They are MikBS34SS carbs. I believe the stock main jet size is 115. !70 seems to be quite a jump for stage 3, doesn't it?
 
Jethro said:
You need to e-mail DynoJet. I just don't understand why the jets are that big for your application. My 16V 1100E with pods and pipe are just right at 138's and needle in the 3rd highest setting. I even had to look on the website to make sure you had the right jets, sure enough, stage III uses 165 and 170??? E-mail them, something seems fishy...
Click to expand...

I'll give that a shot, and if I get a response, I'll post it. My guess is that they will stick by what they list.
 
Seems really rich. 145 maybe? But 165 170! :-s :-k

The thing will suck gas like a thirsty dog after the water 8O
 
I'll give that a shot, and if I get a response, I'll post it. My guess is that they will stick by what they list.
Click to expand...

See if they will explain why it is so different than the 16v 1100's. Maybe I am not thinking of something, but there is no way the fuel consumption between the 16v and 8v should be so different.
 
Jethro said:
I'll give that a shot, and if I get a response, I'll post it. My guess is that they will stick by what they list.
Click to expand...

See if they will explain why it is so different than the 16v 1100's. Maybe I am not thinking of something, but there is no way the fuel consumption between the 16v and 8v should be so different.
Click to expand...

I agree. I could see maybe a slight difference, but somebody must have really messed up big time at Dynojet. I just find it hard to believe that over the years, no one else has run into this problem with their jet kit for 8-valve 1100s.
 
Got a response to my email to dynojet. It reads:

David,



There are many differences between the GS1100 16V and 8V. Obviously the cylinder heads, and cams are different, but the carbs are also different. These are the baseline settings that our researched determined to be the best. My recommendation would be to try a more air/ less air test. Try removing the filters from the bike, and driving it. This will allow more air to get into the cylinders and in turn, lean the mixture slightly. If you notice a power gain, or the bogging decreases then it will be safe to jet down. You could do the exact opposite, and tape over 1/3 of the filter surfaces and drive it like that. That will richen the mixture. Try these simple test procedures and see what kind of results you get from the bike. If you need more help from that point, feel free to give me a call at 800-992-4993 x105.



Thank you



Curt Schannen

Dynojet Research

Technical Support

(800)992-4993


Guess I can give that a try. I already know the bike is running very rich on the mains. Once I get the correct main size figured out, I'll email this guy and let him know what I found. Not that it'll do any good. Doubt they'll change their kit on my word.
 
Einar J Skog said:
Hi

Are you using K-N pods ???
Click to expand...

No, they are generic pods. I'm sure they don't flow as well as the K&Ns, but these came with the bike. You can easily see through the filter, though, so I'm sure they flow pretty well.
 
Just a followup, in case anyone else runs into this problem with DynoJet's kit. I ended up with 138 main jets. I worked my way down from the 165 that came in the stage 3 kit. The bike is running nice now. A little rich at idle, but everywhere else it is strong.
 
Deathwish,

Did you drill the slides like they say in the kit?
If so, did you do it with a drill press or by hand drill?

I am installing one of these kits and I drilled one on my dad's drill press and the !@#&*** hole was crooked.....

Am I going to need to buy a new slide assembly now??
 
rejetting

rejetting

the jet size seemed really large in the dynojet kit. but also with stock carbs with pods and a pipe with street baffle you wouldn't really need a stage 3 kit. these cv crbs are notoriously fussy to tune when you take off the stock air box . Air temp semms to really affect themin my experience. I also read somewhere that spring on top of the diaghram in the carb should be changed as it designed to react to the vacuum created by the carbs drawing through the airbox. Best way (granted much more expensive) to gain more power through carb mods is to put the stock carbs up for sale on ebay and get yourself a set of flat slides.Good luck
 
You must log in or register to reply here.

Similar threads

SamLack99
1982 GS570T - 1/4 Throttle Onwards Flat Spot
Replies
4
Views
125
SamLack99
SamLack99
D
How to raise the needle?
2
Replies
30
Views
621
dgates1
dgates1
D
4 into 1 Exhaust and Flat Spots
Replies
5
Views
150
danny01975
D
D
GS1000 "retromod" build questions
2
Replies
22
Views
487
slayer61
slayer61
2wheel
1980 GS1100L. Putting it back on the road
Replies
16
Views
354
Grimly
Grimly
Back
Top