Weber selection and initial jet tuning

[240260280]

This thread is very quiet. Are there others following it? 

Curious to know. Please chime in.

[Patcon]

Yes, I read every entry. Fascinating, but above my paygrade

[Duffman]

Absolutely, following along to increase my limited knowledge, even though my triples are pretty well set.  Love the tinkering with jets, etc!

[gundee]

Yes me too. Even though I have Mikuni's. The only thing I noticed was in all the years I have talked to others about

Weber and Mikuni, I have never run into anyone say they were using a air jet over 200. I must have missed something along the way.

Otherwise they would not make them I guess.

[Mark Maras]

Likewise. I've learned a great deal about Weber's from this thread. Thanks and keep up the good work.

[blodi]

On 8/18/2018 at 5:40 PM, 240260280 said:

@blodi

Heads Up!  F19 tubes enroute to you from Europe ?

Thanks! Looking forward to seeing the difference.  Glad to know so many others are learning from this thread.  Hopefully it helps others in the future too. 

[blodi]

Ok, got 4 logs in today and I also managed to get the RPM sensor working!  I noticed though that the revs read about ~800 rpm lower on the logger than the tach....not sure which is correct. I rev to 7K when I test on the tach. Maybe tach needs adjustment? Dunno. 

F16 155/215...I didn't have 160's.....but looks like that might be the sweet spot between the 155 and 165.......First run was in the morning...last 3 were in afternoon with a bit higher temps. 

82218-1 by blodi, on Flickr

82218-1 by blodi, on Flickr

82218-3 by blodi, on Flickr

82218-4 by blodi, on Flickr

 

[blodi]

Looking back on my logs, it looks like I do have 160's somewhere. I'll look around harder tonight. Also we did the 160/215 combo and it looked pretty good back then. 

[240260280]

Great.  I'll add these to the plot repository when I get back home. I'm currently starting a new job and training in NJ near @Matthew Abate in Summit.  I may be in Dallas next week.

Yes I recall that 160 too ?

 

btw seeing that rpm trace is brilliant!

[blodi]

Cool!  I found the 160s tonight and installed them. I’ll retest in the next few days. 

[blodi]

Ok F16 160/215

83118 by blodi, on Flickr

[blodi]

A couple side notes. I noticed the cruise has now been very rich. I believe this is due to the 70 idle jets. I am going to go back to the 65's to confirm that is the issue.  

Also, after inputing my info into this gear ratio calculator; https://www.blocklayer.com/rpm-geareng.aspx

I do believe my tach is reading high and the data logger is correct. So I will try to dial that in as well.