CA gas to diesel conv, how hard to reg?
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Thread: CA gas to diesel conv, how hard to reg?

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    Default CA gas to diesel conv, how hard to reg?

    i want to buy a 2st gen suburban 88-91 and put a 12v cummons in it but i don't know if you can still convert a gas to a diesel in CA with all the new diesel smog laws. Does anyone know the rules in CA on this matter?
    Last edited by trev1981; 02-12-2011 at 10:26 PM.

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    You won't be able to register it since there is no similar model in GM's lineup of that year. You will need to buy a 1986 or earlier vehicle to bypass EPA regulations.

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    The Suburban was available with a 6.2L v-8 diesel from 1982-1991. This may make it easier to register.

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    Quote Originally Posted by trev1981 View Post
    i want to buy a 2st gen suburban 88-91 and put a 12v cummons in it but i don't know if you can still convert a gas to a diesel in CA with all the new diesel smog laws. Does anyone know the rules in CA on this matter?
    as long as the diesel engine is the same year or newer than the suburban, and it is a high-way certified engine, ( no tractor or gen. set engine) from a dodge pick-up, you can convert from gas to diesel. if the suburban is `97 or older, it will be smog exempt after the swap is certified at a DMV office, or by a smog referee. I`ve done 4 swaps, and had 3 of`em certified at the local DMV office, and the last on by a smog referee ( the DMV office was closed for re-modeling), all of `em are Bi-annual smog exempt. most cummins engines from `88 to `98 had no smog equipment on them. some `96 and newer california engines had egr on them and if you get one of these the egr must be on the engine and working. if you have any doubts, call your local smog referee.
    71 vega w/ sd22 nissan diesel turbo, 5speed, 50 mpg. 70 chev suburban 4x4,60/14bolt ff,divorced 205,pto lu-4 winch,3.73 detroit locker rear, power loc front, 35s on 16.5"x12" weld wheels, 2400 allison 5speed,triple disc billet torque converter, tcm by Brayden Fleece, 8.2 Detroit fuel pincher turbo v8, 18 mpg. `94 suburban 1/2 ton 4x4, 3.42,`92 6bt, 47rh, Hx35/12cm, 4" exhaust,3200 spring.16/17mpg city, 22mpg freeway

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    Quote Originally Posted by jtamulonis View Post
    as long as the diesel engine is the same year or newer than the suburban, and it is a high-way certified engine, ( no tractor or gen. set engine) from a dodge pick-up, you can convert from gas to diesel. if the suburban is `97 or older, it will be smog exempt after the swap is certified at a DMV office, or by a smog referee. I`ve done 4 swaps, and had 3 of`em certified at the local DMV office, and the last on by a smog referee ( the DMV office was closed for re-modeling), all of `em are Bi-annual smog exempt. most cummins engines from `88 to `98 had no smog equipment on them. some `96 and newer california engines had egr on them and if you get one of these the egr must be on the engine and working. if you have any doubts, call your local smog referee.
    Did you contact your local DMV about the California rules and regs???If so,what did they say about it?

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    jtamulonis..........That is good to know, was it a big hassle or was it pretty straight forward dealing with thw DMV...........Did you have to make an appointment with the referee?
    What part of socal are you in. would you be avalible to speak on the phone about these conversion?..................

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    Quote Originally Posted by 2Dodges View Post
    Did you contact your local DMV about the California rules and regs???If so,what did they say about it?
    I talked to the referee that has a shop at the college I retired from. he told me what I put in my first post. Do not make waves, and ask 88 million questions. after he certifies the swap in the DMV computer, you take your pink slip to DMV and they will issue a new one with the motive power changed from gas to diesel.
    Last edited by jtamulonis; 02-13-2011 at 05:52 PM.
    71 vega w/ sd22 nissan diesel turbo, 5speed, 50 mpg. 70 chev suburban 4x4,60/14bolt ff,divorced 205,pto lu-4 winch,3.73 detroit locker rear, power loc front, 35s on 16.5"x12" weld wheels, 2400 allison 5speed,triple disc billet torque converter, tcm by Brayden Fleece, 8.2 Detroit fuel pincher turbo v8, 18 mpg. `94 suburban 1/2 ton 4x4, 3.42,`92 6bt, 47rh, Hx35/12cm, 4" exhaust,3200 spring.16/17mpg city, 22mpg freeway

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    Quote Originally Posted by sagebrush View Post
    jtamulonis..........That is good to know, was it a big hassle or was it pretty straight forward dealing with thw DMV...........Did you have to make an appointment with the referee?
    What part of socal are you in. would you be avalible to speak on the phone about these conversion?..................
    it was really easy with the referee and DMV. you make an appointment with either one, they look under the hood to see that there`s really a diesel in the vehicle, and enter it into the DMV computer. Done. the referee checked the tag on the timing case and was satisfied. the DMV lady just looked to see that it was a diesel. I live in s. cal. shoot me a PM.
    71 vega w/ sd22 nissan diesel turbo, 5speed, 50 mpg. 70 chev suburban 4x4,60/14bolt ff,divorced 205,pto lu-4 winch,3.73 detroit locker rear, power loc front, 35s on 16.5"x12" weld wheels, 2400 allison 5speed,triple disc billet torque converter, tcm by Brayden Fleece, 8.2 Detroit fuel pincher turbo v8, 18 mpg. `94 suburban 1/2 ton 4x4, 3.42,`92 6bt, 47rh, Hx35/12cm, 4" exhaust,3200 spring.16/17mpg city, 22mpg freeway

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    Quote Originally Posted by srbsmartie View Post
    The Suburban was available with a 6.2L v-8 diesel from 1982-1991.
    Too bad its completely different.

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    Yes you can do it. Last year I switched my 1991 3/4 4x4 suburban. I had to go to a referee. He wanted ALL the computer and sensors as well as the heating grid installed. It took two trips to satisfy his requirements. I was told that the vehicle had to be of a similar GVW.. Mine is 8600GVW and the Dodge truck that I robbed the running gear out of was 8900GVW. A quick check of the data plate on the cummins, wiring, and vin check and we were done. The DMV was confused even with the excemption number from the referee. After a few calls to Sacramento they issued a new pink and a new fuel change registration. I was told, that the laws are going to keep changing, and to get the swap done soon.......
    I live near Fresno, CA. Good luck, and like a previous poster said , DO NOT make waves or get upset. The referee has the ability to stop all further paperwork, and then you have to call a state rep. and fill a grevience.

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    Quote Originally Posted by Jubel jubel freu freu View Post
    Too bad its completely different.
    Different how? Do you mean electronic control instead of mechanical or something similar? I'm confused, I don't know anything about California emissions and registration but I would think if it was available with a diesel you should be able to put a diesel in it.

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    Quote Originally Posted by srbsmartie View Post
    Different how? Do you mean electronic control instead of mechanical or something similar? I'm confused, I don't know anything about California emissions and registration but I would think if it was available with a diesel you should be able to put a diesel in it.
    True,but after all,it is California.

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    Quote Originally Posted by srbsmartie View Post
    Different how?
    Completely different engine, emissions class and vehicle configuration.

    but I would think if it was available with a diesel you should be able to put a diesel in it.
    Not even close.

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