1.7 webers instead of fi

boogerboy72 · 01-20-2003, 05:44 PM

any one succfully used a crb in place of d-jet fi?
fi is just to much

Zeke · 01-20-2003, 07:02 PM

Yes, more than one have done this. This is one of the more debated topics on this and other boards. A search would provide you with hours of reading. I have 40mm carbs.

campbellcj · 01-20-2003, 09:20 PM

What do you mean that the d-jet is too much?

For a street car with a stock or near-stock engine, it is a great system. Carbs are always a compromise solution. 80% of the guys who end up with carbs were looking for a "cheaper" way to go than a decent factory or aftermarket injection setup. The other 20% bought their cars from guys who fall into the first 80%...

boogerboy72 · 01-21-2003, 08:27 AM

i just cant afford it
thats all, but am i gonna mess uo the car with a weber?

JWest · 01-21-2003, 08:42 AM

Single progressive Webers do not run well compared to the other solutions. Dual carbs are more expensive than repairing D-jet.

What is wrong with your system (or what do you have now). I just sold almost all parts that go bad (MPS, TPS, aux air valve, etc.) for a 1.7 for about $30 and the computer and harness for another $25. That's a lot cheaper than a single Weber. If you have the parts then the knowledge to make it work is right here, there are some people here that know D-jet better than Bosch, I think (Brad).

campbellcj · 01-21-2003, 11:17 AM

That's why I asked...I sold an complete good 73 D-jet system for $200. The new carb conversion kits (Weber 40IDF's etc) are like $800...

What is on the car now, and what's wrong with it? As James says, it might just be one simple part or a tuning issue that could be dealt with suprisingly quickly.

boogerboy72 · 01-21-2003, 01:26 PM

nothing is wrong right now, but were restoring it and my dad insists on have a carb, why? i have no idea, well the price of the djet is high, let me know if anyone has a used one for sale

Dave at Pelican Parts · Dave at Pelican Parts's Garage

"A carb" is a bad idea on a 914. Dual carbs are far preferred over the single-carb setup.

I personally prefer FI over any carb setup (the high-$$ aftermarket ones are the best but are $$$), I regard the stock FI as generally the best solution for a stock motor.

--DD

darisb · 02:27 PM

One of the big problems with putting carbs on a car that has fi, is the cam. You really need to match the cam, with the fuel system. If fact, you need to jet the carbs to match the cam. If you're going to put carbs on a motor that has an fi cam, the results aren't going to be as good as they could be.

The other problem is dual carbs get out of synch, and you have to resynch them. Synchronizing cars is a talent that takes some practice. If the carbs aren't in synch, the car is going to run poorly.

If you are rebuilding the engine, then it's a completely a different story. I built a 2.0 with a mild street cam, and dual 45 Dels. Was an incredible engine to drive. Spun the tires in the first three gears (2nd and 3rd while rolling). Ended up having FAT Performance jet the carbs. The car ran circles around my 2.0 fi. Keeping the carbs in synch was still an issue.

As for which is cheaper, I'm looking at new injectors, a cold start valve, and a rebuilt aux. air regulator. That totals about $650. I'm still in favor of fi for drivability, but I'm not convinced that fi is cheaper than carbs.

Hope that helps.

Daris

JWest · 01-21-2003, 02:38 PM

OK, have your dad read the comments from the experienced 914 people here. If he still insists on carburetion, please avoid the single Weber progressive. The manifolding is really sub-optimal and fuel distribution will suffer.

Your best bet in this case would be to find (e-bay or the classifieds on this site) some used dual 40IDF carbs. Carefully rebuild them and get some books on tuning and adjusting them. With the help of this board you can get them working well. They are the next best thing to FI if you can't have that. They make GREAT intake noises to boot!

mike95125 · 01-21-2003, 02:46 PM

Yo Booger,
I have most of a 73 D-jet for 1.7 or 2.0. Email me if you are interested. As stated, you need to match your cam to your carbs, and you will likely toss away your money putting in a "cheap" carb set up. definetly do some research for parts before buying. The first places that you find will likely be glad to sell you a full set up for large $$$, but one of us likely has all of what you need for small change.
my email: mike95125@yahoo.com
I have all but the harness if you are interested.
Good luck,
Mike

JWest · 01-21-2003, 04:20 PM

Just to be clear, FI does not like cams with big overlap, but carbs will run with just about any cam. One advantage to switching to carbs is that it opens up to options to run a bigger cams and get more power/higher RPM.

I just wanted to make sure no one thought that you HAD to change the cam to use carbs or the engine would not run right.