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Thread: Adapting the R380 to 4bd1

  1. 5th July 2015, 04:54 PM #1
    Adrian18 Guest

    Adapting the R380 to 4bd1

    I had a bit of trouble finding info so I've put it together here
    I previously had a lt95 in my 85 county
    I decided to use a td5 74A ******L using a tud102580 tdi pinion shaft which I swap out
    The mod uses a modified lt85 bellhousing this part was done by KLR automotive the back is cnc out and a r380 bolt pattern plate pressed in and welded
    I had to make a clutch push rod using a holden 186 valve push rod it's total length is 166mm
    Ayg3463 is the lt85 clutch plate I also used a exedy pressure plate nsc616tf
    A modified sigot is also required see pi
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  2. 5th July 2015, 05:00 PM #2
    Adrian18 Guest
    Rubber mounts are stc434
    Rhs nrc7136 chassis mount
    Lhs anr2819 nrc6528

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  3. 5th July 2015, 05:08 PM #3
    Adrian18 Guest
    I used a 200 tdi seat base it needed I slight mod
    Lt 77 tunnel

    Lt230 handbrake lever

    Something to be aware of is fly wheel thickness mine is 33 mm which is getting thin you have to make sure the clutch plate has enough spline in it

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  4. 5th July 2015, 05:09 PM #4
    Adrian18 Guest
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  5. 5th July 2015, 05:14 PM #5
    Adrian18 Guest
    I'm using a lt230q 36d 1:1.2 at this stage I've got 255x85x16 tyres

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  6. 5th July 2015, 05:49 PM #6
    Adrian18 Guest
    I decided to add a gearbox oil cooler I brought a ftc2687 from a wrecker the cooler is a dual pass 18" mounted below the radiator rudder flexible hose connects the cooler to the gearbox I ran it no top of the chassis inside another rubber hose to protect it from chafe

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  7. 6th July 2015, 05:01 PM #7
    Adrian18 Guest
    One of pics is of the pressure plate part no. It's a exedy safari clutch 970kg clamp pressure and know that it's in I'm surprised how light it is compared to the outback xtreme one which came out it was 1100kg it was a real dog .....Real on off
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  8. 6th July 2015, 06:04 PM #8
    Barefoot Dave's Avatar
    Barefoot Dave
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    Great work, Adrian!
    Very good and detailed pictures as well.
    Cheers, BDave.
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  9. 7th July 2015, 06:00 PM #9
    Adrian18 Guest
    Well I've got it all together this morning. Got a few small issues lt77 tunnel has to go not enough clearance for cold morning isuzu starts plus the gear lever doesn't line up that well .I've got a 300 tdi tunnel which has more room for sound proofing underneath and should line up better .so off we went for a drive general observation *1st gears lower- good (than lt95 .996) I'm using 1.222 transfer *quieter even without much insulation *the shift is great (syntrans)*4th goes to 90 km/ p/h without reving to hi which I'm not sure about I thought long and hard about this whether to go the .1003 transfer but the one I have is the lt230r old rangey auto one it would give very close to lt95 gearing but with 5th but first I thought might be to hi (r380 1st is 3.692 hi than the lt95 ) I wish they made a 1:1.1transfer😜 any thoughts ???? But overall it's pretty dam good

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  10. 8th July 2015, 02:27 PM #10
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    Dervish
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    Quote Originally Posted by Adrian18 View Post
    ...

    I wish they made a 1:1.1transfer😜 any thoughts ????
    Me too, it would be about the ideal. That said, I'm currently running a 1.003:1 LT230R and like it because I can cruise at whatever speed I want in 5th, dropping back to 4th to avoid stressing the layshaft on hills. I have no idea if that is necessary or not, but I think it's good practice. 4th is good to about 105km/h comfortably (2500rpm), so not much speed is lost.

    First is high with the 1.003:1, but I only find that a problem in traffic - which thankfully since moving to QLD I don't have to deal with any more
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