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83 with gslse engine, i need help/opinions

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Old 01-07-18, 08:05 PM
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Unhappy 83 with gslse engine, i need help/opinions

Well guys I'm at a loss. Everything keeps telling me to drop the car and run now. I've had her for 8 years and most recently swapped in the 13b about a month ago and she ran great till a lack of idle kicked in and garaged her again. The dellorto decided it didn't want to have the idle mixture screw tower attached to it anymore so when i was backing the screw out it took the tower with it. Im debating on whether i can rebuild the tower with jb weld and just retap the hole or if i should go another route.

Has anyone heard of a 6 port manifold that is compatible with a nikki? Is it possible to adapt a RB holley manifold to a nikki? Should i try to fix the dellorto? Should i scrap the dell and try to find another side draft solution like a mikuni? Should i try to bring the efi back to the engine that hasnt seen it in years?
Old 01-08-18, 08:39 AM
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Waffles - hmmm good

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Sounds like that Dell has seen better days. I wouldn't waste time trying to fix it. For that to be broken, you have to wonder what other cracks of doom are just waiting to be uncovered. Otherwise it sounds like it is running good up until the Dell issues. You may be able to source another Dell or like you say a Mikuni or Weber DCOE would work too. Going to EFI would be a lot of bother if you ask me, probably cheaper to source a carb solution.
Old 01-09-18, 05:45 AM
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Have RX-7, will restore


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I swapped in an SE engine into my 85 about 10 years ago. I used all of the original fuel injection components, wiring harness, ecu, fuel tank, custom made a new feed line, etc, and the engine runs fantastic. I chose to use the EGI setup because I knew that it was extremely reliable and has been trouble free to nearly 10 years. Here are some pics:

83 with gslse engine, i need help/opinions-gaofvya.jpg

83 with gslse engine, i need help/opinions-ulydepr.jpg

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Old 01-09-18, 09:03 AM
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^^^^^ This! Same reason,with all the mods done to my SE,iv'e essentially left EGI system untouched. DFI conversion,RX8 plugs, RB streetport exhaust all enhance the cars driveability and give a bump in performance with no negative aspects. I like to take car on extended drives,dependability and no weird quirks are a plus along with functional cruise control and working A/C. My girl can drive it,her only complaint is "armstrong"steering at parking lot speeds.
Old 01-09-18, 08:40 PM
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Originally Posted by Jingkun
Has anyone heard of a 6 port manifold that is compatible with a nikki? Is it possible to adapt a RB holley manifold to a nikki? Should i try to fix the dellorto? Should i scrap the dell and try to find another side draft solution like a mikuni? Should i try to bring the efi back to the engine that hasnt seen it in years?

Go to lowes and buy some 1/4" plate. You can adapt any manifold to any engine. If you have a nikki manifold you can adapt the 12A manifold to the 13B engine (kinda tricky but possible). Or you can adapt the holley manifold to the nikki by using a piece of 1/4" plate and your phenolic spacer. The only problem with adapting the nikki to the holley manifold is hood clearance. I don't think you'll be able to use the OE blue air cleaner.


The only problem with going to EFI is that the car isn't made for it. You'd need to source all kinds of stuff to do it, ie gas tank, lines, manifolds yada yada yada.

Last edited by Qingdao; 01-09-18 at 08:42 PM.
Old 01-09-18, 10:46 PM
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FD > FB > FC

 
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I feel like going EFI and not going turbo on a FB is just not worth the effort. Plenty of power can be had from a carb setup and it fits the car's character better.

My weber set up worked well (DCO) I'd reccomend it again in a heartbeat. Parts for the carb were readily available. Dellorto is much more difficult to find parts for. I liked that you could get jets in increments of 2 rather than 5 like on a weber though.

Last edited by hornbm; 01-09-18 at 11:02 PM.
Old 01-10-18, 05:33 AM
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There was little effort in doing the SE engine swap. It was a direct bolt in, down to the wiring. I get excellent hot and cold starts, average mileage, respectable power, and rock solid reliability. With that said, having a carb can yield excellent results and power gains. Its very simple to tune and install. But for me personally, I wanted reliability and trouble free driving for many years and miles. I've never had an aftermarket carb on a 7, I've always preferred stock so I cannon speak for their reliability. I just know that a lot of people have issues with them. Perhaps it was related to an improper tune or amateur install. I know that I'm happy with what I built. I do want to install a full RB exhaust and install a couple other things but I'm happy overall.
Old 01-11-18, 01:01 PM
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Can you post of a pic of the break?
Old 01-11-18, 11:40 PM
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It basically broke off half way then the rest of it shattered into 6 or 7 pieces that i could find. The idle screw was actually corroded onto the aluminum so it was basically a solid piece. Gonna try to jb weld some hose in place and thread the new mixture screw into the hose and hope for the best. Alternative is cap it and run super rich... Been looking for other carbs and weighing options. Thinking about building a custom 6 port nikki manifold.
Old 01-11-18, 11:52 PM
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Originally Posted by Jingkun
...Thinking about building a custom 6 port nikki manifold.

Lost foam casting aluminum FTW.

That's actually what I plan on doing next. I want to finish my bronze project first, but I'm getting better at casting Al. I think an Al intake manifold is my next project.
Old 01-12-18, 07:47 AM
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Waffles - hmmm good

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Since Dells are hard to find, why not get a DCOE. That should work I would imagine.
Old 01-12-18, 04:59 PM
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Originally Posted by t_g_farrell
Since Dells are hard to find, why not get a DCOE. That should work I would imagine.
Because with everything I've read over the years its that no matter what you do, after you have either a Mikuni or a Dell the Weber will never compare in power or response.
Old 01-26-18, 09:53 AM
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Just find a used Mikuni setup on the forum here or on eBay, a Mikuni 44 should fit the bill just fine and be a direct replacement.
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