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Thread: 1986 Glh omni 2.5 holset build

  1. #1
    Hybrid booster Turbo Mopar Contributor
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    1986 Glh omni 2.5 holset build

    Well after owning this car for 4 years and only putting 8000km"s on it, it will go under the knife again. This time around it will have a 2.5 with Je forged pistons, holset He351 turbo, eagle H-beam rods, pt lifters, mp 318 valve springs, shelgame custom cal, 23x11x3 Fmic with 4" exhaust from turbo to left rear tire side exit. here are some pics of the progress so far, the block has been ground and polished on the inside and bored 30 over and installed piston/rods and used arp studs.






  2. #2
    boostaholic
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    Re: 1986 Glh omni 2.5 holset build

    Nice.
    I'm working the same build, trying to decide if I want to go Holset or 50.
    2.5, Weisco's, T2 rods/arp'd, with a A413/RMVB
    Last edited by Keito; 01-25-2012 at 08:25 PM.

  3. #3
    Hybrid booster Turbo Mopar Contributor
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    Re: 1986 Glh omni 2.5 holset build

    Well i got alot done in a month on this beast, i got alot of parts for TU such as a obx, StgIII 6 puck clutch combo, bearing plate and a adj cam gear. I got a header from Glhs60 (Randy) and had turboshad make a new flange for me. With out the flange in place the intake hits the header and wont even come close to bolting on.









  4. #4
    turbo addict
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    Nice build.

  5. #5
    turbo addict
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    Re: 1986 Glh omni 2.5 holset build

    I have pretty much the same thing. Im in the process of putting an HE341 on mine, also with a tube header! good luck and i cant wait to see more progress!

  6. #6
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: 1986 Glh omni 2.5 holset build

    Wow, it looks like the parts are gathering themselves rather quickly there. It looks like that should be very nice when it's all said and done.

  7. #7
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    Re: 1986 Glh omni 2.5 holset build

    Thanks guys, ya the parts almost all came at once! Tonight is the press on new bearings and remove old races with out wrecking the oil blocker/slinger in the housings.

  8. #8
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: 1986 Glh omni 2.5 holset build

    Nice work but you missed opening up the oil pump hole,

    Does that turbo have the electric solenoid on it? Can't see it.

    That thing should haul azz,
    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

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  9. #9
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    Re: 1986 Glh omni 2.5 holset build

    Quote Originally Posted by turbovanman View Post
    Nice work but you missed opening up the oil pump hole,

    Does that turbo have the electric solenoid on it? Can't see it.

    That thing should haul azz,
    I didnt do the oil hole because the machine work was already done to the block and didnt wanna get material in the oil passages, i know i kick my own --- now for that now. The solenoid is long gone and has a pipe plug in it. I bought the turbo used and was kinda sad it was not there and would have very nicely with my greddy profect eo1 ebc. Ant the hauling azz thing it will do!

  10. #10
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: 1986 Glh omni 2.5 holset build

    Quote Originally Posted by speedfreek500 View Post
    I didnt do the oil hole because the machine work was already done to the block and didnt wanna get material in the oil passages, i know i kick my own --- now for that now. The solenoid is long gone and has a pipe plug in it. I bought the turbo used and was kinda sad it was not there and would have very nicely with my greddy profect eo1 ebc. Ant the hauling azz thing it will do!
    Gotcha, and shitty deal,

    Just curious, many have been caught out with the HE351 and really got a 341.

    Yes, it will, and so will my van one day, but not holding my breath for 2012, but that's another story.
    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

  11. #11
    turbo addict Turbo Mopar Contributor
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    Re: 1986 Glh omni 2.5 holset build

    Nice build! Looking forward to seeing more progress!

    BTW is there a thread/KC article on opening up the oil passage?

  12. #12
    Moderator Turbo Mopar Staff Turbo224's Avatar
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    Re: 1986 Glh omni 2.5 holset build

    Looking good!

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  13. #13
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: 1986 Glh omni 2.5 holset build

    Quote Originally Posted by omni_840 View Post
    Nice build! Looking forward to seeing more progress!

    BTW is there a thread/KC article on opening up the oil passage?
    Basically your opening up the hole so its slightly larger than the block, so you put grease on the block, put the pump down and you can see what needs to be removed. Also open up the hole a bit up to the oil filter pad. I get 25 psi at idle and 60+ at 3K+ using 5w40 synthetic.

    http://www.thedodgegarage.com/turbo_oil_pump.html
    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

  14. #14
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    Re: 1986 Glh omni 2.5 holset build

    Next step is to send my head to the machine shop for a good vale job, what should i do a 3 or 5 angle? stock size valves. my new valave guides should be here today or tuesday.

  15. #15
    turbo addict
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    Re: 1986 Glh omni 2.5 holset build

    5 is obviously better, I had a 7 or 9 angle done on mine. (the machinist likes working on my heads for some reason) Atleast buy some +1s, you can use stock seats, let that holset breath!

  16. #16
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    Re: 1986 Glh omni 2.5 holset build

    5 it will be then, how much will i even notice going to a +1mm? do both or just intake?

  17. #17
    boostaholic bfarroo's Avatar
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    Re: 1986 Glh omni 2.5 holset build

    What's the intercooler rated for? The Return style like you have pictured cool well but typically don't flow the greatest. It could end up being a bottleneck at some point in time. I can see using it for packaging reasons if that is one of your concerns.

  18. #18
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    Re: 1986 Glh omni 2.5 holset build

    Quote Originally Posted by speedfreek500 View Post
    5 it will be then, how much will i even notice going to a +1mm? do both or just intake?
    Do both, +1mm.
    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
    turbo addict
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    Re: 1986 Glh omni 2.5 holset build

    Im not sure how much more they will "flow", but since youre paying for a valve job anyway why not? Youre putting new guides in already, paying for a valve job, plaining, and cleaning. might as well toss another 120 at it for new/better valves. Im not sure how you feel about porting but i would atleast gasket match the head/intake/exhaust since youre this far into it. Lets get this thing to flow!

  20. #20
    Hybrid booster Turbo Mopar Contributor
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    Re: 1986 Glh omni 2.5 holset build

    I pulled the old bearing races out last night and didnt even wreck the oil blockers! but i did notice the was only one shim in the steel housing and none in the speedo housing. We got a shim kit here at work so tonight i will set the preload on the obx. Has there been a back to back dyno with stock valves vs +1mm done yet?

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