Tuning setup

[Guest]

I have a 82 Suzuki gs1100ez I'm running kandn air pods filters, Mac 4 into 1 without the baffle, stage 3 dynojet jet kit with the dh160 main air jets. First question is with the stock 160 main air jet the jet kit called for 2 1/2 turns out for the mixture screw. well with the dh160 it says it needs a richer mixture screw setting anyone with the same or close to the same setup how many turns do u have yours out. Second question totally different topic from first topic. last night I was on the highway and got on it and got it to about 120mph or the speed limit for the law abiding citizens and it felt like there was no power after that and the rpms wouldn't move anymore like it was starving for fuel and I let off and it started popping and cracking like I was out of gas and sounded like I was only running on 2 cylinders I had to get home so I kept riding and it cleared up as I got closer to home I don't know what the issue is anyone had this problem please explain how u cured it. Thank you I know all bikes are different so this is just questions I'm asking. AND PLEASE NO PREACHING OR STATING THE OBVIOUS!!

[Steve]

Not going to preach, just going to state some facts.
1. The pilot jets only affect idle and low-throttle operation, not mid- and wide open settings.
2. Admitting you are doing 120 on public roads is rather questionable.
3. Admitting you have a MAC header with open baffle will get you very little (if any) support.
4. Loud pipes do NOT save lives, they just irritate EVERYBODY.

.

[greg78gs750]

wot is main jet territory. have you seen the cv carb tuning link, it is a sticky in the carb section, i think.

[Carter Turk]

Isn't he talking about the "air jet" on the airbox side of the carbs?
No pilot jet is 160 right?

[Steve]

Isn't he talking about the "air jet" on the airbox side of the carbs?
No pilot jet is 160 right?

I got the impression that is the one in discussion, the full, technical term is "pilot air jet".

There is plenty of confusion with the "dh 160 pilot jets" mentioned in the original post. I was not aware that Dynojet supplied any air jets (except for the 'correctors' for the main air jet). A Dynojet 160 MAIN jet is about the same as a Mikuni 150, which is possibly too much, but I am not an expert in jetting for aftermarket situations like this.

.

[geol]

I personally hate running out of power at over 120 mph. What a bummer... and Steve, when you preface a post by saying you are not going to "preach", I have learned to expect a sermon bhwahahaha ...... there is nothing like the sound of an unbaffled MAC system to get your pulse racing hehe

[mmattockx]

A Dynojet 160 MAIN jet is about the same as a Mikuni 150, which is possibly too much, but I am not an expert in jetting for aftermarket situations like this.

The OP is pretty hard to read, all right. On the plus side, he did use some punctuation and capitalization... Now, to the bike stuff. For comparison purposes I live at 3400ft, my 82 1100E has a Kerker 4-1 canister system on it (baffle is in but not much packing left), APE pods on the intake. All in all, very similar to OP's set up.

My jetting is:

47.5 pilot jets. I believe this is stock for Canadian models, but that is not confirmed. It is one size up from stock US jetting from what I have seen
Mixture screws are 3.25 turns out
Stock needle on the 4th groove from the top. Canadian models still came with adjustable needles in '82, they have a much more gradual taper than Dynojet needles and are nicer for tuning.
142.5 main jets

It is a touch rich on the pilots to compensate for being very slightly lean coming onto the needles. I plan to replace the tailpipe and canister on the exhaust with a better flowing set up so I have more tuning to do and will fully sort the needle at that time. It is so close that I think a washer under the needle clip would be perfect, a full groove change would be too much at this point. I just didn't feel like taking the carbs off again this summer for such a minor change when I know I will be back into them to sort the new tail pipe set up.


Mark

[gs11ezrydr]

DH160 pilot air jet

NOTE: The pilot air jets (DH160) are optional. Using the pilot air jet will
lean out the bottom end. Use the jet if you are experiencing excessive
loss of mileage or bike starts without choke when cold. Using this jet
will warrant a richer mixture screw setting. Fig. C shows the jet location
Which is located on the intake side in the pilot circuit.

[andrews gs]

Ok I fixed my first post somewhat for the preaching people. I changed the main air jet because of excessive fuel consumption I just wanted to see how many turns others had out with that same main air jet I have mine out 1.5 turns on all 4 and when I turn the choke off the rpms I have set to 1250 drop every time I let off the throttle to close to almost killing the bike. To whom it may concern if it is to loud you are to old that is all.

[cowboyup3371]

To whom it may concern if it is to loud you are to old that is all.

So I assume when city governments begin enforcing lawful and usually public requested noise ordinances that ultimately ban motorcycles you'll still accuse them for being too old? What a moron.

[gs11ezrydr]

2.5 turns is recommended without the jet, with it will warrant a richer setting. try 3-3.5 any thing much more after that will require a larger pilot jet.

[JJ]

...To whom it may concern if it is to loud you are to old that is all.

You just blew your chance at getting any help from many of the more experienced members here, kid... Personally, I hope you blow it up... holing all four pistons.

[roeme]

I can certainly see past butchered language.

I can certainly see past a difference in taste.

But an attitude like that? (On top of that, totally unprovoked within this thread?)

Insta-ignore.

[GSXR7ED]

This thread is interesting.


Ed

[posplayr]

This thread is interesting.


Ed

Im trying to ignore hoping it will pass.