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Thread: OBX diff and slicks equals too much fun!!!!!

  1. #1
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Talking OBX diff and slicks equals too much fun!!!!!

    Well, more boring stories for you guys.

    Thursday after work, install my OBX LSD in my van, got to bed at 4 am, back at work for 8:45 am the next day.

    Get to the track Friday after work, install slicks, boost is still set at 20 ish PSI from the other Friday night, van has been parked as my Jimmy needed some tlc. I put 20 litres of 94 oct Chevron in my empty tank and 1.5 gallons C16. Hit the burnout box and do a f*cking wicked burnout, but engine cutting out and chugging, clear out the engine and stage, bog off the line and it coughs and splutters the whole run, #$~!$$##%, run a 15.7@88.2 mph, 2.4 60ft. Its neat having both wheels spin in the bleach box.

    I change out the custom cal chip and install Shel-Games chip. Make NO OTHER changes, do another wicked burnout-YES, I know, your not supposed to but I wanted to beat on my OBX and plus, its FUN- 2.37 60ft and rip a 14.4@94 mph, still at 20 ish boost.

    Give the MBC 1 turn and go back out, pitted against a mint condition Datsun 510, its also eerily quiet!!!!!!!!! I bust a .564 time, him a .747, I get a 2.3 60 to his 2.9, I am ahead pretty good, not looking at my tach it starts to cough and splutter, sh*t, the lifters pumped up at 6200rpm, I pedal and float gas to try to let it catch, 510 boy goes by me 3/4 track, van comes alive and I catch and pass him just at the line, me-15.7@87 and him 16@66??????

    No changes, but I am thinking of my crappy 60fts and how it bogs off the line than catches, I realize I need more boost off the line and now I have hot slicks, I can try it. I have been launching at roughly 6-7 psi.
    Line back up with 510 again????? and off we go, another wicked burnout, I launch at 11 psi this time, me a .334, him .887, It launches pretty hard, I feel this could be a 13 sec run, cut a 2.14, him a 2.33, I rocket to a 14.1@93, him a 13.7@104-little bugger has a turbo hidden under the hood. I leaned out pretty good in 3rd gear on this run.

    Turn up the fuel pressure 1 1/2 turns and go back out. Another wicked burnout and stage, I launch at 15ish psi and holy sh*t, it pulled out of the hole like a freight train, I cut a 2.009 60ft, racing a Ion supercharged Ecotec, he cut a 2.47, It was pulling hard then the valves pumped up again, Grrrrrrrrrrrrrrr, slowed down and ran a 16.7@67 to his 16.0@98.

    All in all, had an awesome night, van again was the most popular vehicle there and learned alot, my old cal was the problem all along and now, just need to play some more and get on the dyno. BTW, if your thinking of drag racing, spend the money and get the Quaife or OBX, they friggin rock,

    A bud with his Rotary blew the turbo-first run, he had just had it rebuilt and on the way home, I was playing with a new Porche, he passed me so I pinned it and passed him, he wouldn't play though,
    Last edited by turbovanmanČ; 05-06-2006 at 06:46 PM.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  2. #2
    Garrett booster
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    Re: OBX diff and slicks equals too much fun!!!!!

    dang, a turbo 510 would be a great sleeper... probably a 280ZXT motor swapped in. I just ALMOST put a turbo L28 in my 280ZX before I bought my van, but the ZX had too much underbody rust...

  3. #3
    turbo addict looneytuner's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Sounds like the others had nightmares about you getting everything right. If participants are scarce next week, they might pay you to STAY AWAY>>>>

  4. #4
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by looneytuner
    Sounds like the others had nightmares about you getting everything right. If participants are scarce next week, they might pay you to STAY AWAY>>>>
    One could only hope,
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  5. #5
    turbo addict BIG PSI's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    GOD I MISS MY MINI VANS !!!!!!!!!!!!!!!

    I am glad to hear that you are getting VAN HELLAN sorted out. Next week the 13's will be there for you my friend. Keep at it.... I am lokking foward to meeting you in July.

    Your Friend
    Chuck

  6. #6
    Visit www.boostbutton.com... Turbo Mopar Contributor ShelGame's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by turbovanman
    I change out the custom cal chip and install Shel-Games chip. Make NO OTHER changes, do another wicked burnout-YES, I know, your not supposed to but I wanted to beat on my OBX and plus, its FUN- 2.37 60ft and rip a 14.4@94 mph, still at 20 ish boost.
    Glad to know it worked good for you...
    https://db.tt/SV7ONZpQ
    Rob Lloyd
    '89 Daytona C/S

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    13.24 @ 100.5mph
    NHRA #3728 AF/S

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  7. #7
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    It still doesn't pull very hard on the top end, this has me baffled. I am running the same time as my bone stock setup with a TIII turbo in 2003, I ran around 23psi then, around 20 psi now!!!!!!!!!!! hopefully I can get this thing in the 12's before summers end or I will die,

    Oh, I am running the S1 cam, I am putting the stocker back in or the S2-thoughts? stock or S2?
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  8. #8
    Hybrid booster
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    Re: OBX diff and slicks equals too much fun!!!!!

    ^^ I'd be a bit agravated too....
    But keep the stories comin!

  9. #9
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by Birddog
    But keep the stories comin!
    You guys arent' bored by my stories yet?
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  10. #10
    turbo addict BIG PSI's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Simon,

    I have an idea as to what may be your problem at the top end. Check your spark gap, maybe it is to far apart and the flame is getting blown out ???

    Do you have a fuel pressure gauge hooked up to where you can see while you are going down the 1/4 mile or is the gauge just under the hood ?

    Last but not least, what about your timing ???

    Chuck

  11. #11
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by BIG PSI
    Simon,

    I have an idea as to what may be your problem at the top end. Check your spark gap, maybe it is to far apart and the flame is getting blown out ???

    Do you have a fuel pressure gauge hooked up to where you can see while you are going down the 1/4 mile or is the gauge just under the hood ?

    Last but not least, what about your timing ???

    Chuck
    Gap at .028 and a flame thrower of a coil

    After I turned up the fuel pressure-yellow/green on the dawes and roughly 14-1500 EGT's, can't see all guages properly.

    Timing at stock 12 deg. My old engine liked 15 when racing so I might play with that next time out.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  12. #12
    Garrett booster
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by turbovanman
    You guys arent' bored by my stories yet?
    How can stories of a drag racing tool shed ever be boring?

    Daniel Merrill

  13. #13
    Visit www.boostbutton.com... Turbo Mopar Contributor ShelGame's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by turbovanman
    It still doesn't pull very hard on the top end, this has me baffled. I am running the same time as my bone stock setup with a TIII turbo in 2003, I ran around 23psi then, around 20 psi now!!!!!!!!!!! hopefully I can get this thing in the 12's before summers end or I will die,

    Oh, I am running the S1 cam, I am putting the stocker back in or the S2-thoughts? stock or S2?
    Where are you shifting at? I know my car has no top end at all. Just this afternoon, I lowered my shift light from 5900 to 5400 and picked up 0.300 et!. 2.5's just have NO top end what-so-ever unless you have a seriously ported head and big a$$ cam...
    https://db.tt/SV7ONZpQ
    Rob Lloyd
    '89 Daytona C/S

    2.5 T1 Auto
    13.24 @ 100.5mph
    NHRA #3728 AF/S

    boostbutton.com
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    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by ShelGame
    Where are you shifting at? I know my car has no top end at all. Just this afternoon, I lowered my shift light from 5900 to 5400 and picked up 0.300 et!. 2.5's just have NO top end what-so-ever unless you have a seriously ported head and big a$$ cam...

    Unfortuneatly, around 6 grand. I am going to lower my line pressure to lower the shift points a bit more.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

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    Visit www.boostbutton.com... Turbo Mopar Contributor ShelGame's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by turbovanman
    Unfortuneatly, around 6 grand. I am going to lower my line pressure to lower the shift points a bit more.
    You need a RMVB
    https://db.tt/SV7ONZpQ
    Rob Lloyd
    '89 Daytona C/S

    2.5 T1 Auto
    13.24 @ 100.5mph
    NHRA #3728 AF/S

    boostbutton.com
    tuning wiki

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    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by ShelGame
    You need a RMVB

    Hahhaaa, everyone keeps saying that but NO, if I go that route, going to put my 568 in. I refuse to shift an automatic on the street, just seems wrong,
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

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    Hot Certified Christians at TD! Turbo Mopar Staff Directconnection's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Simon, what do you mean by the valves "pumped up" ???

    I'd seriously pull out everything non-stock except for the intercooler and turbo combo and start right from scratch. Proccess of elimination. Something still doesn't sound right.
    Quote Originally Posted by 22mopar
    have a look at my feedback on the forum. all positive.

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    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by Directconnection
    Simon, what do you mean by the valves "pumped up" ???

    I'd seriously pull out everything non-stock except for the intercooler and turbo combo and start right from scratch. Proccess of elimination. Something still doesn't sound right.
    The lifters or valve train pumped up, its never done that before at such low rpm, dropped the cylinders then had to wait for them to pump back up, then it stopped missing and back to life. Could be the conicals but others have had no issues at only 6000 rpm with them?

    I know, something doesn't seem right but every drag night, find something else,
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  19. #19
    Hybrid booster
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    Re: OBX diff and slicks equals too much fun!!!!!

    Have you thought about swapping out the conicals before next drag night to rule them out as the problem? All the data that is out there indicates that the stock valvetrain is adequate for how high the 2.5 will rev.

  20. #20
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: OBX diff and slicks equals too much fun!!!!!

    Quote Originally Posted by The S is Silent
    Have you thought about swapping out the conicals before next drag night to rule them out as the problem? All the data that is out there indicates that the stock valvetrain is adequate for how high the 2.5 will rev.

    That is something to think about but I am the only one that is having issues at such low rpm. I had them checked at the head shop said there perfect for this combo, seat and lift pressures are bang on,

    Again, for some reason, last friday night was the first time, I could rev it to 6700 before then it would pump up? I guess I could have damaged a spring or something?
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

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