Thread: Larger pulley in Winter?

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  1. #1 Larger pulley in Winter? 
    The mod from over yonder TheOtherNick's Avatar
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    I have herd that i should run a larger pulley in that winter due to the colder denser air. Is my engine at risk or was the larger pulley just used to gain gas mileage back in the winter from letting the car warm up. I will be putting my stock Tstat in when it gets a littler colder. Just wanted to find out before it gets cold.
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  2. #2 Re: Larger pulley in Winter? 
    GrandPrix Junkie Sabrewings's Avatar
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    Actually, it's the other way around. In winter you can run a smaller pulley due to a colder intake charge. During summer is when you may need to let up.
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  3. #3 Re: Larger pulley in Winter? 
    The mod from over yonder TheOtherNick's Avatar
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    Thats what i thought it should be i remember reading some where tho to run the larger pulley? Thanks for the info
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  4. #4 Re: Larger pulley in Winter? 
    GTP Level Member 2000GTP's Avatar
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    yeah,you definitely dont need a larger pulley in winter... but you probably also wouldnt really need to put in the stock tstat. i dont think you would really have any problems with a 180 in the winter
    2000 GP GTP Black 2 Door AEM Meth Injection (100% Meth), 3.25" pulley, N* TB, PRJ Wires, Smoothflow Idlers, 42# injectors, Racetronix fuel pump, ZZP Headers, 1.8 Roller Rockers, Custom CAI, NGK TR6 Plugs, 180* Tstat, Custom Tuning by TUNE TIME PERFORMANCE
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  5. #5 Re: Larger pulley in Winter? 
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    Quote Originally Posted by Sabrewings View Post
    Actually, it's the other way around. In winter you can run a smaller pulley due to a colder intake charge. During summer is when you may need to let up.
    ^X2. Even if you had the stock pulley, the colder air will help temps & kill some knock and increase the timing. I found that out last night running against a Z28 Man a dp/ubend delete/ and temps in the high 40's makes a big difference.
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  6. #6 Re: Larger pulley in Winter? 
    The mod from over yonder TheOtherNick's Avatar
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    Too bad my jeep loves its gas. That would be a good solution to winter driving for me. I some times have to drive to school with 8" of snow on the road. I will have to scan my car when i gets real cold to see what KR is i know i have a little now. I want to see what the weather can do for me.
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  7. #7 Re: Larger pulley in Winter? 
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    Quote Originally Posted by 01GTP View Post
    Too bad my jeep loves its gas. That would be a good solution to winter driving for me. I some times have to drive to school with 8" of snow on the road. I will have to scan my car when i gets real cold to see what KR is i know i have a little now. I want to see what the weather can do for me.

    How does a Jeep get bad gas mileage?
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  8. #8 Re: Larger pulley in Winter? 
    The mod from over yonder TheOtherNick's Avatar
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    I am taking that as sarcasm but i think it might have to do with it being an 89 with a 4 inch lift very aggressive tires and a carbed inline 6. My gas mileage might go up with that a bit tho i am just finishing up the install of the engine after the rebuild.
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  9. #9 Re: Larger pulley in Winter? 
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    Not sarcasm, I've just never seen a Jeep get 'that' bad of MPG.
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  10. #10 Re: Larger pulley in Winter? 
    The mod from over yonder TheOtherNick's Avatar
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    Oh just look at any of the pre 1997 wranglers or the cjs and so on. The best i ever did on a tank when it was my dd was about 13.5 add a little wheeling in to it and it drops to 10 or 11.
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  11. #11 Re: Larger pulley in Winter? 
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    Damn, thats nuts. Makes me feel a bit better about the MPG my vehicle gets then.
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  12. #12 Re: Larger pulley in Winter? 
    The mod from over yonder TheOtherNick's Avatar
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    yeah my gtp is one of the best gas mileage vehicles i have owned. I thought of another winter ? where would be a good place to install an oil/block heater i have one that was on my wrangler. It is basically a big magnet i had it on the oil pan but the gp's have a plastic oil pan. I haven't taken time to look and am open to suggestions.
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  13. #13 Re: Larger pulley in Winter? 
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    Quote Originally Posted by 01GTP View Post
    yeah my gtp is one of the best gas mileage vehicles i have owned. I thought of another winter ? where would be a good place to install an oil/block heater i have one that was on my wrangler. It is basically a big magnet i had it on the oil pan but the gp's have a plastic oil pan. I haven't taken time to look and am open to suggestions.
    Well, I don't honestly know of any other place. But GP's don't have a plastic oil pan.
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  14. #14 Re: Larger pulley in Winter? 
    DUI BABY Bio248's Avatar
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    Quote Originally Posted by Sabrewings View Post
    Actually, it's the other way around. In winter you can run a smaller pulley due to a colder intake charge. During summer is when you may need to let up.
    really? you really think that?

    its really dependent on your setup. if youre setup good enough and you can tune it, you might be able to run a smaller pulley. i actually knock more in the winter because i make a few pounds more boost just because.
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  15. #15 Re: Larger pulley in Winter? 
    GT Level Member Merlin's Avatar
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    I agree with everyone, Its that time of the year to start bumping in some more timing and go and have some fun.
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  16. #16 Re: Larger pulley in Winter? 
    The mod from over yonder TheOtherNick's Avatar
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    I must not have been paying attention to the material of the pan when i changed an oil pan gasket on a gp. I was pretty mad by the time i got it off and i thought i remembered it being plastic.
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