Carb converted 944?

[Makenzie71]

I love carb'ed light-weights...my favorite RX-7's are Webber'ed FC's. In the same spirit of things, and in the interest of losing weight () I was wondering if anyone puts together a carb kit for the 944? I'd like to see a couple of webber 48's strapped to it...maybe it's just me, though...

Just to point out...I had a 2100lb FC RX-7 and one of the biggest things I did for weight redux to get her to that weight was yanking EVERYTHING related to the EFI setup and using a webber setup. I don't think I would ever do this to the 944, but looking at things and wondering, I decided to run a search, and didn't find anything covering it.

[AFJuvat]

Somehow I'm thinking that you have not gotten the car started yet.

AFJuvat

[Makenzie71]

...nope, but that's nothign to do with it...lol. Even when I get her started I'll still like to see a couple webbers strapped to her.

I'm hoping that I get time to play with her tomorrow.... Crossing my fingers, actually, but I think the 8" of snow that's supposed to hit us might get in the way...

[Makenzie71]

Webber makes a kit for the 924 ('76~'82) but's setup with a 40DCOE. I would only consider a 48DCOE or larger. Anyone know if any of the intake components are compatible between the 924 and 944?

[AaronM]

Originally posted by Makenzie71
Webber makes a kit for the 924 ('76~'82) but's setup with a 40DCOE. I would only consider a 48DCOE or larger. Anyone know if any of the intake components are compatible between the 924 and 944?

Considering that the engines share no compoanants, I'm going to say no.

Aaron

[Wolf1]

Originally posted by Makenzie71
Webber makes a kit for the 924 ('76~'82) but's setup with a 40DCOE. I would only consider a 48DCOE or larger. Anyone know if any of the intake components are compatible between the 924 and 944?

The components are NOT compatible. But if one REALLY wanted to do such a thing a manifold could be fabbed quite easily.

[Makenzie71]

That's kinda what I was thinking. I could make a steel manifold to mater the carbs up to the head...I'd probably try and copy the design used to mate them to the 924. That's sure lead up to a clean engine bay

[sasquatch]

Why on earth would you do this?

I did the 40 DCOE kit on a 1982 924 that I owned. I would never do it again. With an engine designed for fuel injection, they never seem to run right on carbs. Every time the weather changes, so does the jetting. No high idle for AC or fans kicking on. No altitude sensing (not like you need it in TX). Worse gas mileage.

The FI system on 944's are quite nice, even with the barn door. Heck, I will never own another carb'd motorcycle either. FI all the way...

[Zero10]

I'm a huge fan of FI. Every car I've ever owned, if it had a carb, I swapped it to a FI system. Then again, we have a lot of cold cold mornings here, and the carb's just don't deal with bad weather as well as a FI system does. That said, I always saw a mileage increase when switching to FI, and always saw a performance gain. Now, none of the carbs were new, but I just don't see the point to adapting a carb to fit these engines.

[Makenzie71]

I've run seceral carbed 13b's, always ran fine...one of which I drove from Connetitcut to Louisiana without a loss in performance or driveabillity. Tuing from time to time is just a hassle to having the carb. I hate ressetting my TPS or worrying about my O2 sensor...which need just as much attention. Having a high idle for when the A/C kicks on isnt an issue if you have all the A/C components ripped out (close to 40lbs right there)...fan doesn't draw so much that'd you'd need an idle adjustment for it.

Of course you're going to see noticeable gains by swapping a carb setup for EFI...think about it. You basically setup the thing with an aftermarket ECU...right? Try swapping ANY car over to tuneable Haltech and you're going to see noticeable gains...whether it was carb'ed or not. I've seen an S4 RX-7 put down 240rwhp with a webber 48, very mild street-port, and headers. Moot points. It's all in tuning, maintanance, general care. I've seen people achieve their goals on both sides of the spectrum .

(I speak of webbers and mikuni's...know nothing about traditional holly's and such)

[sasquatch]

I have been building performance superbike motors for over 20 years. Spent probably 1000 hours on a dynos tuning the carbs. Yes, for some it can be easier to change a jet rather than tweek a fuel map, but in the end you will get better performance, reliability and economy with FI any day over carbs.

I will NEVER go back to carburation, EVER. You say worying about the TPS or O2 is just as much trouble as a carb. I would respond saying you have some serious problems with your car. TPS adjusting should be a once in a 100k miles event, if ever. O2 sensor? Change it every 50k miles and your golden. Fuel filter, yearly. Turn key, drive.

I have been in this business too many years to buy the statement that carbs are easier to deal with than FI. And yes, I only speak Weber, Mikuni and Dellorto... But not any more, now my language is Bosch and Sagem.

[Makenzie71]

I'm saying that with either there's going ot be some assocated hassle. I am not saying that one is always easier than the other or that one is always better than the other.

None of this really matters......my car and I like playing with carbs...lol. I also like clean, near-empty engine bays. It's more of incorparating a hobby I like into a car I love. Know what I mean?

[ae1969]

Originally posted by sasquatch
.............I will NEVER go back to carburation, EVER. You say worying about the TPS or O2 is just as much trouble as a carb. I would respond saying you have some serious problems with your car. ...........

" " .. what he said

EDITED: I don't have a clue what to say to this post. Speechless. Interesting. But still speechless.

[Makenzie71]

why would EFI be the last thing to consider removing?

(seriously...if you think that the stock EFI system is lighter than a carbed setup, you're VERY mistaken...)

[sasquatch]

I am definatly all for you doing what turns your crank on your own car. I was just stating my opinion. I should have clarified that. The clean engine compartment was nice on the 924, but the constant tinkering was not. The older I get the less I want to constantly tinker with a car/bike to keep it running the best it can.

I just bought my first fuel injected bike a year ago and it is so nice. No matter what the elevation, it runs perfect, and idles smoothly. Thumb the starter at 15 degrees and it fires instantly and goes through the nice warm up routine that only FI can give.

Just my own opinion.

[Makenzie71]

what bike? I can give that...EFI bikes > all others. The only ting I'd rather ride are the low cc 2-strokers...

[sasquatch]

Triumph Tiger 955i Dual sport. The most fun on a bike (since that wild girlfriend I had in high school...)

[ae1969]

Originally posted by Makenzie71
why would EFI be the last thing to consider removing?

(seriously...if you think that the stock EFI system is lighter than a carbed setup, you're VERY mistaken...)

I have a complete setup in a box I could weight for you. The weight savings are no where near what you would hope to gain. As I recall the last time I cleaned the garage the spare tires weighed more.....

If weight is the issue you have a number of components that would be removed LONNNNNNG before the EFI.

That would ...

1. not cost you any money
2. not result in a non-running vehicle

Hence ............ the LAST thing to consider removing.

but its your car........... don't let us stop you.

[fast924S]

I hate carbs, such old school tech, You mine as well just spray some brake clean down the intake and drive around. EFI is soooooooo much better and at most maybe only 25lbs wiring ECU and fuel lines. Think about it EFI and ECM setup on are cars is great technology, It can adjust timming, injector duration, Cold starts, its Load varaible ect, Alot more controlled and better perfomrance then any CARB setup you could ever come up wth and on top of it all CARBS need tons of care and mantience, IF your EFI car is well taken care of you shouldnt need to adjust your TPS or anything.

If anything I would dump the old efi setup and install a full stand alone programable engine managment system, this way you can do whatever you want and its where your gonna get your best perfromance gains.

EFI kills carbs hands down

[Trevor]

The other thing to consider is "weight savings" unless carefully done are also upsetting the 50/50 weight distribution of these cars. Anyways, it seems like you have a lot of ideas for these cars but I've yet to see a finished project. Anyways, call me a purist but I think these cars are best stock. Buy a new DME relay and forget about carbs for the 944. Good Luck