Time to tune the weber, need suggestions please!

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Mar 19, 2011 | 12:09 PM

#26

j9fd3s

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From: https://www2.mazda.com/en/100th/

Quote:

Originally Posted by EvilWankel

I need to make an amendment to what I said earlier about the amount of turns out the idle adjust screw was...I was only counting 1/2 turns, so in actuality it was about 7-7/12 turns out. Now, I put in the 65f9's and got it down to about 4 1/2 turns...so I'm going to be ordering 70F9 and 75F9 just in case the 70's don't work.

Since we're on that topic, where does everyone get their stuff from? There's only one place I know of in town, and they are geared toward VW's, and the 65F9 was the largest idle jet they had. Websites I have are:
www.piercemanifolds.com
www.webercarbsdirect.com

Also, I was thinking about getting one of those synchrometers to get everything tuned precisely. Any suggestions/comments on those??

i like pierce. i get stuff next day from them, cause i'm so close.

ive never ordered from weber carbs direct

Mar 19, 2011 | 03:11 PM

#27

Siraniko

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From: Socal

Quote:

Originally Posted by EvilWankel

So you suggest that I bore the hole wider and save myself money??? I've never really tuned a carb so I think that tool may come in handy. I can tell when the engine doesn't like how I adjusted it but I'm not so confident in minor adjustments.

keep a log book to keep track of which bit you are using. how do i do it? i keep on drilling until the car wont move anymore and then use a jet smaller. I do the same with my main jets. to be honest, I dont even know the size anymore but again, thats my driving habit. thats cheaper than spending bucko bucks on jets.

Mar 19, 2011 | 07:19 PM

#28

82FanTC

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Quote:

Originally Posted by EvilWankel

Also, I was thinking about getting one of those synchrometers to get everything tuned precisely. Any suggestions/comments on those??

Does you absolutely no good unless you are running dual carbs.

Mar 23, 2011 | 09:04 PM

#29

EvilWankel

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From: Fife, WA

Well I was just in the garage doing the drilling to the jets, and tuning from the engine bay. After adjusting the idle jet screws a little, I hit the throttle from the engine bay to check it out...and the throttle cable got stuck behind the throttle stop screw for about 5 seconds pegged. 95% sure I just blew my engine.

SO A NEW QUESTION! Will this carb setup handle a half bridge 13b?!?!

Mar 23, 2011 | 09:39 PM

#30

j9fd3s

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From: https://www2.mazda.com/en/100th/

Quote:

Originally Posted by EvilWankel

thats lame! what broke?

the answer is yes, a 48 should be fine, intake is a little bit long, but the carb is big enough

Mar 23, 2011 | 10:26 PM

#31

EvilWankel

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I'm not sure really. It wont start anymore. I was pretty disappointed in myself when I did it so I havent really gone in there to investigate.

Mar 23, 2011 | 10:48 PM

#32

Siraniko

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From: Socal

you probably broke the rotor return springs

Mar 23, 2011 | 10:59 PM

#33

EvilWankel

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From: Fife, WA

Well I just went back out there, sprayed some carb cleaner down it and it finally started up. Maybe it got flooded, I dunno. It's definitely not as easy to start now, but it starts, and runs, and doesn't sound terrible.