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Thread: J-mod in sf area

  1. #1
    Join Date
    Dec 2011
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    san francisco bay area
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    19

    J-mod in sf area

    Hi all,

    While I don't have a MM as I've got an 04 Vic sport, I'm wondering who's the go to guy in the SF Bay Area for those who aren't comfortable doing it on their own?

    TIA

  2. #2
    Join Date
    Jan 2009
    Location
    San Francisco
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    44
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    623
    Pm Bigmerc281. He knows someone in Hayward I think.
    2003 Mercury Marauder 300A
    #5597 of 7839 in 2003
    Eibach front lowered springs
    aero turbine 2525 mufflers
    2.5" classglass hood
    badgeless grill
    JLT CAI
    SCT X3 w/ Marty O tune

  3. #3
    Join Date
    Aug 2012
    Location
    San Bruno, CA
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    80
    There was a guy who advertised on Craig's List all the time for doing the J-mod out of his shop in Stockton. I'll PM you his number.

  4. #4
    Join Date
    Dec 2011
    Location
    san francisco bay area
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    19
    Thanks for the replies guys. I found out one of the guys on the crownvic forums had Bayshore Transmission in Burlingame do his jmod and he was happy with their work. They also have a contract to repair SFPDs cars so they're familiar with the cars. I'm waiting for a reply back from the member about pricing. Shop has good yelp reviews and is a member of ATRA. I'll want to have my 98 Vic done first. Then my 04sport later.

  5. #5
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    Quote Originally Posted by 98cacvpi View Post
    Thanks for the replies guys. I found out one of the guys on the crownvic forums had Bayshore Transmission in Burlingame do his jmod and he was happy with their work. They also have a contract to repair SFPDs cars so they're familiar with the cars. I'm waiting for a reply back from the member about pricing. Shop has good yelp reviews and is a member of ATRA. I'll want to have my 98 Vic done first. Then my 04sport later.
    Cool, I would like to know his price quote too.
    2003 Mercury Marauder 300A
    #5597 of 7839 in 2003
    Eibach front lowered springs
    aero turbine 2525 mufflers
    2.5" classglass hood
    badgeless grill
    JLT CAI
    SCT X3 w/ Marty O tune

  6. #6
    Join Date
    Nov 2012
    Location
    Sacramento
    Posts
    3,737
    I am in too! I need two Jmods... and have been looking for a year. My ford store rep thought I was crazy when I asked about it. Please let us all know.


    2003 300A Black, #4918 of 7838, 17,400 Miles
    Tune, KYB's, JLT, FlowMaster 42441, Res Delete, New BFG's, 8 coats of zymoil Titanium

    2003 300B Silver Birch, #21 of 419, 29,800 miles
    Tune, JLT, FlowMaster 42441 Res Delete, New Nitto 235/255 Bigcarsforever dead peddle & custom SRP peddles, 5 coats Zymoil Titanium, Addco front and rear sway bars, KYBs, 1/2 inch coil cut, Sparta Watts link and Control Arms, Carfixer alignment.

    2003 CV Sport Matador Red, 19,280 Miles, DD, Curless Full Service Royal flush, Marto Tune, 18 Chrome Wheels w 235/265 front/back Nitto tires, NEW OEM Sport Springs -1 coil & Monroe Severe Duty (front) shocks, Addco front and rear sway bars, KYB rear Shocks, Carfixer Alignment.

    2004 CV HPP Silver Birch, 93,000 miles. Son's DD, 18 Chrome Wheels w 235/265 front/back Nitto tires (thank you Lowndex!)

  7. #7
    Join Date
    Nov 2006
    Location
    Union City, CA
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    48
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    2,502
    Brian got his done. Not sure what shop he went to. Are you guys leaving the accumulator springs in? I'm still undecided on the j-mod.
    2003 Mercury Marauder 300B (Daily Driver)
    1988 LTD Crown Victoria S

  8. #8
    Join Date
    Mar 2003
    Location
    Las Vegas, NV (Henderson)
    Posts
    877
    Just had a friend with a CV take his car to the dealer for a coupon deal trans flush and filter replacement at 165000 miles. The service advisor called to say they found a "problem" with his trans. It seems when the tech pressed on the 1-2 accumulator cover it moved to easy. They said it appeared to have some missing springs and they "recommended" a rebuilt one. He told them to just put the filter in. We had done the J-mod about 6-7 years ago on it. I'm still amazed how many Ford trans "techs" seem to know nothing about the J-Mod.
    His: Blue w/Light Flint Born 02/05/03 (Wednesday)
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    Born 02/05/03
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    Hers: Black 300A w/Charcoal Born 06/25/02 (Tuesday)
    2011 of 7838
    .
    Locking Lugs
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  9. #9
    Join Date
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    Quote Originally Posted by vegasmarauder View Post
    Just had a friend with a CV take his car to the dealer for a coupon deal trans flush and filter replacement at 165000 miles. The service advisor called to say they found a "problem" with his trans. It seems when the tech pressed on the 1-2 accumulator cover it moved to easy. They said it appeared to have some missing springs and they "recommended" a rebuilt one. He told them to just put the filter in. We had done the J-mod about 6-7 years ago on it. I'm still amazed how many Ford trans "techs" seem to know nothing about the J-Mod.
    Why would factory trained Ford techs know about the J-mod unless they are active on the various message boards? IMHO some techs barely know how to do routine repairs let alone modifications. We've heard plenty plenty of horror stories here.......
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

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    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

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  10. #10
    Join Date
    Dec 2011
    Location
    san francisco bay area
    Posts
    19
    I haven't heard back from the crownvic member that had his jmod done as he doesn't appear to be a "regular". But when I get back to work tomorrow I'll look into the correct hole sizes to drill for my 2 vics and give the shop a call. Just for curiosity sake I'll ask about a group discount even though I know it's hard to get consensus/firm commitments from people sometimes. Keep u posted.

  11. #11
    Join Date
    Dec 2011
    Location
    san francisco bay area
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    19
    Hi,

    Here's the reply I got from the shop owner Tom.

    Hi...as you know, the valve body has to come off the trans. I get $240 for the complete job, which includes new accumulators..(strongly recommended for vehicles with mileage) , filter, and fluid.

    Without the accumulators the cost would be $200. With your own fluid, $180. I could do them early next week.

    I'll do the 98 but as info on hole/drill sizes was hard to find for the older car; I'll go with those for the newer cars #2, #4, #5, #9 and #11 at 7/64 and #10 at 3/32. I plan on leaving all springs in and as my car only has 29k miles on a Ford remanuf tranny, I'll keep the existing accumulators.

    If all goes well, I'll do my 04 sport later with everything replaced as it's got 129k miles on it.

    Your thoughts?

    John


  12. #12
    Join Date
    Nov 2012
    Location
    Sacramento
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    3,737
    what do you think about drilling the 1st to 2nd gear hole at 3/32... so it doesn't shift so hard?


    2003 300A Black, #4918 of 7838, 17,400 Miles
    Tune, KYB's, JLT, FlowMaster 42441, Res Delete, New BFG's, 8 coats of zymoil Titanium

    2003 300B Silver Birch, #21 of 419, 29,800 miles
    Tune, JLT, FlowMaster 42441 Res Delete, New Nitto 235/255 Bigcarsforever dead peddle & custom SRP peddles, 5 coats Zymoil Titanium, Addco front and rear sway bars, KYBs, 1/2 inch coil cut, Sparta Watts link and Control Arms, Carfixer alignment.

    2003 CV Sport Matador Red, 19,280 Miles, DD, Curless Full Service Royal flush, Marto Tune, 18 Chrome Wheels w 235/265 front/back Nitto tires, NEW OEM Sport Springs -1 coil & Monroe Severe Duty (front) shocks, Addco front and rear sway bars, KYB rear Shocks, Carfixer Alignment.

    2004 CV HPP Silver Birch, 93,000 miles. Son's DD, 18 Chrome Wheels w 235/265 front/back Nitto tires (thank you Lowndex!)

  13. #13
    Join Date
    Nov 2012
    Location
    Sacramento
    Posts
    3,737
    and can you tighten my linkage while you re under there?


    2003 300A Black, #4918 of 7838, 17,400 Miles
    Tune, KYB's, JLT, FlowMaster 42441, Res Delete, New BFG's, 8 coats of zymoil Titanium

    2003 300B Silver Birch, #21 of 419, 29,800 miles
    Tune, JLT, FlowMaster 42441 Res Delete, New Nitto 235/255 Bigcarsforever dead peddle & custom SRP peddles, 5 coats Zymoil Titanium, Addco front and rear sway bars, KYBs, 1/2 inch coil cut, Sparta Watts link and Control Arms, Carfixer alignment.

    2003 CV Sport Matador Red, 19,280 Miles, DD, Curless Full Service Royal flush, Marto Tune, 18 Chrome Wheels w 235/265 front/back Nitto tires, NEW OEM Sport Springs -1 coil & Monroe Severe Duty (front) shocks, Addco front and rear sway bars, KYB rear Shocks, Carfixer Alignment.

    2004 CV HPP Silver Birch, 93,000 miles. Son's DD, 18 Chrome Wheels w 235/265 front/back Nitto tires (thank you Lowndex!)

  14. #14
    Join Date
    Dec 2011
    Location
    san francisco bay area
    Posts
    19
    Well, I just dropped off my 98 at the shop to have the work done. It was nice to see a SFPD cop car there also. Tom says they do the jmod to all the cop cars also and recommends leaving the 1-2 springs in and removing the 2-3 springs as the city cars see a lot of stop and go driving which wears out those pistons. Based on his experience, I'll let him do that as I do a lot of commuting back and forth the City to Oakland. He doesn't normally drill the reverse hole, but I asked him to do it anyways. If all goes well, I'll do the 04 next and will ask about fixing my slow reverse.

  15. #15
    Join Date
    Dec 2011
    Location
    san francisco bay area
    Posts
    19
    All done! Shifts good although I haven't yet pulled the batt cable as some suggest for computer to "adjust". So far in everyday traffic shifts are faster and a little more pronounced. Before kinda "mushy" for lack of a better word. Aggressive driving is when it shifts quick. Others may want the 1-2 spring removed if want to feel harder shifts. I have another car with a shift kit and the jerk when shifting from 1 to 2 is annoying.

    I'll be back with my 04 after I adjust the linkage to hopefully take care of my shifter issues.

    John

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