Brett!
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Posts posted by Brett!
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3 hours ago, Subasaurus said:
sometimes timing isn't where it's suppose to be, the flywheel isn't perfectly accurate, my 79 Wagon liked being at 9 1/2 degrees while my 80 Brat likes being at 7 degrees, just go by feel and sound, and keep an eye on that temperature gauge!
your jets may be too large or you need to close off that fuel mixture more, check with a vacuum gauge as you're tuning it down some, you want stable 17-18 inches of Mercury (or more! if possible). you're dumping an excessive amount of fuel so it flash ignites in the exhaust and BAM! 12 gauge shotgun.
check your wires that wire up to the ignition coil, you may have a wire on the wrong polarity on your ignition coil, this happened to me once and caused this shot gun like sound when shutting the car off, there's multiple ways to make the vehicle pop like this.
i had so much fun doing this on purpose in my 79 GL Wagon, i would floor it as the vehicle shut off to dump more fuel to make the pop even louder when i would arrive at work back when i worked at a shop, and once in a while police would arrive due to the report of gunshots fired, which weren't. i miss that wagon.
i know this because i would do it to my friends when they were following behind me at night, big flame blast comes out the rear and ofcourse a gun shot like sound, IT IS LOUD.
I had taken it into a shop to try to get assistance with the backfiring issue because despite my best efforts I couldnt' get it to stop. They were not old school subaru folks, but they do restore MG's, Midgets, and Triumphs that commonly use the Weber we upgrade to. They rebuilt the entire carb and it ran better, but they were not able to eliminate the backfiring. Over the weekend, I decided to try again and fix the issue. Turns out they had super advanced the timing and it was set well into the negative degrees, so much so that with a timing light, you couldn't see TDC. I adjusted it back to approximately 8* which made a major difference in how smooth the engine would run at idol. I thought this might fix the issue, but once the engine was good and hot and got switched off.. BAM!!!!!! louder then ever.
This is why I dont believe its the timing, although I havent tried setting the timing even further retarded past 8*.
Excessively large jets and a build up of unburnt fuel is where I was leaning. I am unfamiliar with the vacuum gauge test you are describing. Could you elaborate a bit more, or give me a link to do some reading. -
I get it, 4 sentences are hard to read. Did you miss that part where the timing is dialed in, checked and rechecked?
Its ok if you did buckaroo, what else do you think it could be?
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Hey y’all.
I have a Weber in my Brat and despite best efforts to tune the carb and set the timing, I always get a cannon blast out of the exhaust when I shut off the car.
The timing is currently set at exactly 8* and the carb feels well dialed in when driving under all conditions. However, when the engine is warm and you shut it off.....BAM! Always a single gunshot that terrifies anyone in ear shot.
So, any ideas of things to check / change / tweet. Do Weber’s have an anti back fire valve?
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bummer. Thanks for the info.
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About a year ago, my 79 Gen1 Brat got t-boned in a hit and run, and I have slowly been doing the body work to get it back on the road. The drivers door is destroyed, so I have to find a replacement.
A DL popped up locally and I was thinking about getting it to use for parts for my BRAT, but wasn't sure if the front doors from a DL are the same as the BRAT anyone know?
Here are pictures of the DL and my BRAT
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I just got back from vacation to find that some one had t-boned the BRAT I have been restoring for 3 years. I need a new drivers side door and front drivers fender. Are these still available?
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Get the DGEV with the adaptor plate.
Primary Idol 60
secondary Idol 55
140 - 140 mains / air bleed
timing 8-10 degrees
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Ill buy the drivers side one.... walked out to my car last night and someone had hit mine... broke the lense
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I probably have the widest and largest tires possible sitting underneath my gen 1. However, I did a 6 lug conversion with a ton of research to get a 15" rim with the correct back spacing to make everything clear and not rub. Here is a helpful diagram of what the sock wheels are vs. what I ended up doing.
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I had WRX seats in my Gen1 brat for a hot sec. Thought it would be cool, but they sit a bit higher, and at 6' 1" I no longer fit in side the car.
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Napa only had the oil plug in their lexicon of parts. However after spending to much and some trial and error I was able to find the right size. It is a 26mm by 1.5 pitch plug.
They are not very common, but they were common in older Mercedes. The one I used was a 85 380SL Fits snug, and isn't leaking.
Here is a link for years and models
http://www.partsgeek.com/ss/?make=Mercedes&ssq=W0133-1640723&brand=Febi
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any updates?
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Well, no replies.
Here is what I have done so far. I got underneath with pair of calipers to measure the hole. Looks like its 24mm. If its a common thread pitch, then it might be a 24 by 1.5mm plug. I looked up what other more modern cars have that type of plug and had to special order one from Napa. Ill get it tonight and see if its fits then report back with the results.
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I noticed that my Transmission was wining really bad, so I checked the gear oil when I got home... none. Started to add fluid and it all just started pouring out onto the ground. Got underneath and my transmission drain plug is missing. Anyone have any idea what size / pitch the plug is or where I can get a replacement for a Gen1 Brat with the 4 speed manual.
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I like how many vintage subaru people know what the Pinball run is and are into mopeds as well. Just proves that we are a bunch of badasses.
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@LouKoff
Its a combination of a few different bikes, but started out as a Batavus Regency. Its powered by a Minarelli v1 with a Puch arisol Euro kit, hammer clutch, hpi.... really the works. Ill be posting about it on moped army in a few days.
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Your correct about the lack of rust on Northwest cars. They don't salt their roads, they use sand for the most part. Most cars from that neck of the woods tend to have way less cancer.
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In the middle of July I am doing something called the Pin-Ball run. Its sorta like the Cannon run, but on mopeds. Over 7 days we will be racing from Seattle to San Diago. I need a chase vehicle to use to support my team with tools, extra parts, and what not. Its actually cheeper to buy a crappy car off of Craigslist then it is to rent a uhaul.
That gave me an idea though. Their are a lot of sweet vintage subaru's in the northwest that are harder to find in the southwest. If you were eyeing one and needed it transported. I can take it down the coast for you.
If anyone is interested, let me know.
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In the middle of July I am doing something called the Pin-Ball run. Its sorta like the Cannon run, but on mopeds. Over 7 days we will be racing from Seattle to San Diago. I need a chase vehicle to use to support my team with tools, extra parts, and what not. Its actually cheeper to buy a crappy car off of Craigslist then it is to rent a uhaul.
That gave me an idea though. Their are a lot of sweet vintage subaru's in the northwest that are harder to find in the southwest. If you were eyeing one and needed it transported. I can take it down the coast for you.
If anyone is interested, let me know.
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In the middle of July I am doing something called the Pin-Ball run. Its sorta like the Cannon run, but on mopeds. Over 7 days we will be racing from Seattle to San Diago. I need a chase vehicle to use to support my team with tools, extra parts, and what not. Its actually cheeper to buy a crappy car off of Craigslist then it is to rent a uhaul.
That gave me an idea though. Their are a lot of sweet vintage subaru's in the northwest that are harder to find in the southwest. If you were eyeing one and needed it transported. I can take it down the coast for you.
If anyone is interested, let me know.
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I keep waiting and hoping for brat parts
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OMG!!! Im going to buy all the things!
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Thanks! Hopefully one day my BRAT will be as pretty as your wagon.
Weber Backfire on Shutoff
in Historic Subaru Forum: 50's thru 70's
Posted
Oh, I understand what you were trying to get me to check with the vacuum gauge. Ill check all of that this evening and report back.