looking for link to Keith Frank Hypo jet online store

[TBone028]

Sorry if I took your post off topic...but, here's my short story: Weber DCOE's installed | Initial impressions - Nissan L6 Forum - HybridZ

I think the biggest problem I have right now is time! I just dont have nearly enough time to tune the webers as I would like...always something that keeps me from being able to record, analyze, and think about my AFR's through the rev range. Right now the car feels great....I just want to be sure I've optimized as much as I could.

Regarding jets, I'd pretty much be interested in a 60F9, 125 & 140 mains, 175 and 190 air...those numbers are to round my current/modest collection so I can experiment. Let me know!

[240260280z]

There are also mods that can be done to stock DCOE's to get a bit more performance:

1. shaping chokes

2. tapering and shaping aux venturi edges

3. narrowing throttle shaft cross section

4. removing strut from aux venturi

5. re-aiming accel. pump jet squirt

Probably many more.

[240260280z]

Sorry if I took your post off topic...but, here's my short story: Weber DCOE's installed | Initial impressions - Nissan L6 Forum - HybridZ

I just read. Nice stuff. You may wish to consider setting the actual fuel levels (wet adjustment) rather than setting the floats (dry adjustment only) . Correct fuel level is the first important step to tuning DCOE's

[Zedyone_kenobi]

Just a follow up to close this thread.

Keith send me a refund of all shipping costs to my paypal account before I even had a chance to email him.

He said it should have been free shipping.

Class act!

[Zedyone_kenobi]

I recently received my order of the Weber Hypojet jackets and 28 thousandths inserts. They arrived safely with no issues to my door.

HUZZAH!

However I have a question. I understand that the insert can be turned to the desired opening on the jacket for tunability, thus giving me 4 chances to zero in on my correct AFR.

My question is this.

Is the insert suppose to fit snuggly into the jacket? when I install my insert, it freely spins inside the jacket. When I install the mated pair into the idle jet screw, it freely spins inside of that as well. With no solid tight fit, between idle jet holder, to insert, and insert to jacket, how does the hypojet maintain the correct jet opening orientation? Since it is screwed in, I would think that it would rotate randomly and it would not be consistent at all between jets.

Not sure how these are suppose to hold a setting...

No other instructions were included, as it is just as simple as insert tab a in slot b like all weber stuff.

[LeonV]

I don't remember exactly what Keith said regarding these, but I do remember them not being very tight. I think they get locked in when you screw them in. Why not send Keith an email?

Do not over-tighten them.

[Zedyone_kenobi]

I contacted Keith,

He said I need to take some pliers and tighten the idlejet holder a bit so that it grips the jacket much tighter. THat way when you insert the Jacket inside the idlejet holder, the insert which is in between the two is held tight. You have to jam the jacket into the idlejet holder very hard to wedge the insert into the idle jet holder in a fixed position

Not really an elegant solution.

You have to make the idle jet holder grip the jacket tight enough so that it does not rotate when you screw it in and tighten it down.

I will have to experiment

[240260280z]

Hopefully you will collect some good empirical data. I am sitting on the fence presently as most Weber reports are very subjective with many variables still floating within the observations.

An air fuel plot of best standard vs best hypo jet/new etubes and associated dyno curves would be nice from Keith et al for completeness. Repeatable verification by a 2nd source would satisfy scientific proving methods.

[Zedyone_kenobi]

Okay, I installed my Hypojets today.

I had to take a small pair of pliers and bend the two tabs that hold the idle jet in just a tad to firmly grip the hypo jet jacket. If you do not do this and allow it to be even a little free, when you tighten the idle jet into the carb body, when it seats the jacket tends to spin a little. This would make the hole in the jacket NOT line up with the hole in the insert, thus rendering your idle jet useless.

If the holes in the jacket are numbered 1 to 4 with one being the smallest and 4 being the biggest, I used number 2.

According to Keith,

The smallers holes give you rich off idle AFR and lean out as the RPM climbs, whereas the larger holes in the jacket tend to be leaner at idle and richen up as the RPM climbs.

I was running a 60F9 idle jet. With a AFR of about 13.5 at idle that was somewhat stable.

When I installed my 28 thousands hypojet insert into the jacket on hole number 2, the car would not run at all with my foot off the pedal. It was around 16-18:1 AFR. I opened up the idle mixture screws one half turn and immediately the car fired up and settled down to a steady idle of 13.5 ish.

It was late so I did not get a chance to drive it, so the jury is out. More info when I get a chance to drive it.

i must say the need to deform the OEM weber idle jet holders so that the hypojet jacket does not spin is NOT an elegant design in my opinion. This needs to be fixed in hypojet #2. After you screw it in there is NO way to know if the jacket as turned inside of the carb. I pulled mine out two to three times each to verify they were still in position. Two of the six moved. So I crimped the idle jetholder further.

IF the car drives worlds better, I will overlook this

[Zedyone_kenobi]

First drive impressions

Okay I had 5 minutes to start the car up and take her for a romp. First let me say the car fired up noticeable easier and with less tapping the gas pedal. Three pumps and turn the key and with one extra blip once running she was ready to back out. The throttle response is definitely improved. Very linear and feels great. More throttle input resulted in expected more thrust.

But the real difference I noticed can be summed up like this.

Sure the car drives smoother, and more 'modern', but I was pulling from a light at 5mph in first and just stabbed it to the floor. NO hesitation, no sputtering, nothing but pure acceleration. It was actually more responsive then my 2013 Golf R. The thing just responds like never before. I will be playing with the jacket holes to find out where I am happy, but right now cruising at 60mph I keep dead steady high 12.8:1 AFR. Not sure I can ask for more than that.

I would say for 150 dollars the hypojet inserts and jackets are a nice improvement over a standard 60F9 idle jet.

[LeonV]

Couldn't agree more...

I made sure to stomp the throttle every time I went WOT:

[Zedyone_kenobi]

Is that awesome sound your twice pipes in your avatar LeonV