 Carb conversion, what all is involved? |
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| BMXerror |
 Sep 11 2006, 01:13 PM
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#1
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Senior Member  Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842  |
Hey all. I'm finally fed up with my D-Jet system because I actually want to DRIVE my money pit once in a while. I'm thinking of going to dual weber 40s with 36mm venturies (Stock 1.7 engine). I know I'll have to redo the fuel system and I've heard rumblings of needing a different dizzy. Is there anything else I need to switch over? Also, what would you guys recommend for jet sizes? I'd like to go to SDSfi but I just can't afford it right now and don't want to wait even more months 'till I am able to afford it. Anyways, any tips you can offer. Thanks.
Mark D. |
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| SLITS |
Sep 11 2006, 01:18 PM
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#2
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
So..... what's wrong with the D-Jet you can't fix?
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| TravisNeff |
Sep 11 2006, 01:28 PM
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#3
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region 
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You can keep your stock distributor, or go with a mallory or 050. You will need a different fuel pump (less pressure). That should be about it. If you are using the stock wiring for the fuel pump, you will have to leave the ECU and harness from your FI. I would go with a switched power source elsewhere than leave the FI parts in.
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| terrymason |
Sep 11 2006, 01:38 PM
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#4
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Member Group: Members Posts: 346 Joined: 23-November 05 From: Virginia Beach Member No.: 5,174 |
QUOTE(Travis Neff @ Sep 11 2006, 11:28 AM)  You can keep your stock distributor, or go with a mallory or 050. You will need a different fuel pump (less pressure). That should be about it. If you are using the stock wiring for the fuel pump, you will have to leave the ECU and harness from your FI. I would go with a switched power source elsewhere than leave the FI parts in. The PO changed mine over, and mounted a normal toggle switch under the dash. Works great as a kill switch. For about a month there I'd always get in and make it about 10 feet before it died out. |
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| SLITS |
Sep 11 2006, 03:30 PM
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#5
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
QUOTE(Travis Neff @ Sep 11 2006, 12:28 PM) You can keep your stock distributor, or go with a mallory or 050. You will need a different fuel pump (less pressure). That should be about it. If you are using the stock wiring for the fuel pump, you will have to leave the ECU and harness from your FI. I would go with a switched power source elsewhere than leave the FI parts in. Nope, you pull the relay off the board and solder a wire between pin 85 and pin 87 and you have switched power to the pump. Plus, you buy a Mallory fuel pressure regulator w/return and you can use the stock pump. |
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| Leo Imperial |
Sep 11 2006, 03:36 PM
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#6
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Do you have to use so many cuss words? Group: Members Posts: 906 Joined: 29-November 04 From: 914 Roadshow - Glen Cove NY Member No.: 3,192 Region Association: None |
Can you cap the return line if you already have a pump?
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| SLITS |
Sep 11 2006, 03:38 PM
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#7
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
QUOTE(Leo Imperial @ Sep 11 2006, 02:36 PM) Can you cap the return line if you already have a pump? Sure ........ |
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| Leo Imperial |
Sep 11 2006, 03:45 PM
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#8
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Do you have to use so many cuss words? Group: Members Posts: 906 Joined: 29-November 04 From: 914 Roadshow - Glen Cove NY Member No.: 3,192 Region Association: None |
Cool. I am swaping engines this week and the new(old) one has carbs. I was going just plug the line and didn't know if that was too ghetto
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| Rand |
Sep 11 2006, 03:46 PM
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#9
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
I guess if you are more comfortable with carbs than Djet, and if you plan on building a hipo motor in the future that is beyond the scope of Djet, then it makes sense.
I just hate to see someone get frustrated and throw away a good system. Djet is NOT that complicated. If could be a whole lot easier to just fix the problem. If you are still open to some help with the Djet, post the symptoms you're having. |
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| BMXerror |
Sep 11 2006, 04:06 PM
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#10
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Senior Member Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 |
First of all, I'm not 'throwing' anything away. It's more of a gentle 'slide' in the trash can... hehe.. Seriously though, I've got quite a few new parts that I've purchased in my attempts to mend the problem, so I'll cycle those back into the 914 community. I know the D-jet is not complicated, but it's actually going to be cheaper to switch over to carbs. I know that the problem is either in the loom or the brain, and niether of those is cheap to replace.
YES, I'm frustrated. I've owned a 914 for five months and haven't even gotten to drive it yet. And BTW, I AM planning to build a "hipo motor" later, but weber 40s won't handle it either. As I said before, I would like to buy an SDS and just remap it when I build my new motor, but I don't want to wait ANOTHER 5 months to drive my car while I save up the money! Thanks for the carb tips guys. Mark D. |
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| ziggy101 |
Sep 11 2006, 04:29 PM
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#11
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Drive it like you stole it!! Group: Members Posts: 60 Joined: 16-July 06 Member No.: 6,451 |
QUOTE(BMXerror @ Sep 11 2006, 03:06 PM) First of all, I'm not 'throwing' anything away. It's more of a gentle 'slide' in the trash can... hehe.. Seriously though, I've got quite a few new parts that I've purchased in my attempts to mend the problem, so I'll cycle those back into the 914 community. I know the D-jet is not complicated, but it's actually going to be cheaper to switch over to carbs. I know that the problem is either in the loom or the brain, and niether of those is cheap to replace. YES, I'm frustrated. I've owned a 914 for five months and haven't even gotten to drive it yet. And BTW, I AM planning to build a "hipo motor" later, but weber 40s won't handle it either. As I said before, I would like to buy an SDS and just remap it when I build my new motor, but I don't want to wait ANOTHER 5 months to drive my car while I save up the money! Thanks for the carb tips guys. Mark D. hey i have 2 brains froma 70-74 if ud like one. id sell for like 20 dollars. i have 2 of them. tell me if ur interested. ud have to pay shipping tho..... (IMG:style_emoticons/default/blink.gif) |
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| SLITS |
Sep 11 2006, 04:45 PM
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#12
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
I'm not gonna cut Ziggy out, but if you want a harness w/brain to try out and see if it solves your problems.....come to my place in Riverside and I'll hand you the setup. I should have several.
BTW, the brains do not usually go bad. |
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| spunone |
Sep 11 2006, 05:05 PM
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#13
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Senior Member Group: Members Posts: 945 Joined: 6-April 04 From: Anaheim CA Member No.: 1,901 Region Association: Southern California |
Brains do go bad mine did ....opps you mean the one for the car never mind
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