blodi

Spring is here! Lets get back to it! I switched to 34 chokes over winter to try to get a bit more drive-ablilty back to it. Same exact setup as before other than that. Did a pull last night. It was high 40's or so here.....so results may vary once it gets a bit warmer.....

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Well, the weather has gotten a lot cooler here and I haven't been able to get into the dyno due to scheduling or weather issues. Might have to wait til spring on it. The car is about a full point leaner under WOT with the cooler temps due to the air density.

Got an appt for the dyno for this Saturday. But, right now it looks like rain, so I might have to reschedule. Number predictions, anyone?

Very happy with the results. The F19 was a great call! As I said before, the car pulls great! I think the lean spike at the beginning may be due to the 35mm chokes and losing velocity. I could try the 34's and see if that helps it, but that will hurt the top end a bit. Also it has a nice lean cruise at these setting as well. I want to try to get the car on the dyno before the snow flies here. I'll have to call and see when I can get on their schedule. Thanks for all the help! I want to get a few more weeks of monitoring under my belt and then I'll get the other E Tubes out to you.

Ok, F19 165/175....I gotta say...pulls really good! My RPM sensor obviously went MIA in the first two runs. 92818-1 by blodi, on Flickr 92818-2 by blodi, on Flickr 92818-3 by blodi, on Flickrvvvvvv

Wouldn't a smaller main make it even leaner? Right now I'm running what is essentially the "richest" combo I have. 165 main is the largest I have and 175 corrector is the smallest.

Put my 175 correctors in for a 165/175 combo...it's certainly richer and looks good for a while and then starts going leaner as RPM raise. I forgot my SD card today so I can't get a log. I will try tomorrow.

Yeah decreasing the air corrector is what I meant above....215 is in there now.....I have a 185 or 175 I can jump down to. I'll try to get one of them in tonight.

Looked last night and 165 is the largest main I have. I could try a 185 or 175 corrector to try to richen it up.

Got the F19's in with 165/215. Drove it last night and didn't have a chance to get a log, but under WOT the AFR's were way lean....like 15's at 5K.

Broke one of the 165 mains when trying to insert it? ... got a new one on the way.

E tubes showed up today! What setup should I go with on them? Stick with 160/215?

That's who I've used too! I agree, great service and prices. Thanks again for sending those. I put the 65F9 idle jets back in and afrs are leaned back out at cruise and looking good.

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.

Ok F16 160/215 83118 by blodi, on Flickr

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

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.

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

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.

F16 165/215 again on flat ground. I also received and installed F9 70 idle jets this evening. Driveablility seems much better at lower speeds. I am going to re calibrate the O2 sensor when I have a chance as well as I haven't done it in a while. 81418 by blodi, on Flickr

I should say that the log last night was down an entrance ramp for what it's worth. Also I checked my fuel height and it's at 28mm +/- .3 mm in all three carbs. I may have been closer to 29mm last summer which might be why it's a bit richer now. I can try another log on this setup just to confirm.

Here is F16 165/215 again... 81318 by blodi, on Flickr

Thanks again for the great analysis! I was out of town the last couple days but had a bit of time tonight and through in the F11 and did the 155/185 combo with the following result...same as last time with the down a entrance ramp and then flatter run second. 81218-1 by blodi, on Flickr 81218-2 by blodi, on Flickr I might throw in that F16 165/215 combo in an retest tomorrow. The carb is not bigger in diameter than the intake. I think it's either equal or has a slight step if I remember correctly, but I can scope it and find out.

Took a couple of logs tonight...first one was down an entrance ramp. Second one was a flat entrance onto highway and engine was more up at temp. The setup? F16 155/185 8918-1 by blodi, on Flickr 8918-2 by blodi, on Flickr