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Thread: FWD Gearbox to suit SR20det

  1. #1
    Guest spice_weazle's Avatar
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    FWD Gearbox to suit SR20det

    As Title really.

    Does any one know of a front wheel drive gearbox that will fit onto a SR20det?

    Cheers.

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    Guest Hamish N's Avatar
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    Almera GTI? Pulsar?

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    Guest spice_weazle's Avatar
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    Quote Originally Posted by Hamish N View Post
    Almera GTI? Pulsar?
    Ok cool are they pretty strong as in strong enough to cope with a stage 1a SR or are they made of chocolate?

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    Stu@GarageSR, Aberdeen GarageSR's Avatar
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    Primera GT had an SR20de too iirc

    Clickme

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    Was pulsar not 4wd?

  6. #6
    Guest spice_weazle's Avatar
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    Quote Originally Posted by dukey View Post
    Was pulsar not 4wd?
    Yes it was but prob not too much of an issue to run it in 2wd config.

  7. #7
    I <3 BBS LM Actual_Ben_Taylor's Avatar
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    FYI the FWD gearbox will only fit a FWD SR20, you can't bolt a FWD gearbox to a RWD SR20.

  8. #8
    Now with 400bhp....
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    Even if you change the bellhousing?
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    Quote Originally Posted by Chriscooke View Post
    Even if you change the bellhousing?
    hahahaha


    I suggest you google image search fwd sr20 gearbox and rwd gearbox

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    So just get the whole gtir setup as it has a better turbo too?

  11. #11
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    Quote Originally Posted by green_rs13 View Post
    hahahaha


    I suggest you google image search fwd sr20 gearbox and rwd gearbox
    Guess that's a no then
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    I did see talk of using the upper and lower oil pans from the RWD SR20 to make an Almera block fit in an S13 as more gearbox holes match up and there was something about the correct starter and flywheel combo to use but he never confirmed it, might be worth looking into though? It certainly isn't just bolt on and love life.

  13. #13
    Guest spice_weazle's Avatar
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    Ok cheers.

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    Guest R3K1355's Avatar
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    Quote Originally Posted by dukey View Post
    So just get the whole gtir setup as it has a better turbo too?
    That would probably be the more straightforward solution.

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    the gtiR engine is better all round, it has solid lifters so can rev without popping shims. it has better oil supply to the main bearings. it has a better oil pump.loads of small things.

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    Guest CNHSS1's Avatar
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    Quote Originally Posted by green_rs13 View Post
    the gtiR engine is better all round, it has solid lifters so can rev without popping shims. it has better oil supply to the main bearings. it has a better oil pump.loads of small things.
    Twas the FIA homolgated special the GTIR for rallying so lots of little details that made bugger all difference on a road car but we're essential in Group N rallying class (extremely limited mods allowed)

  17. #17
    Guest ANDY black s13's Avatar
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    the weak link on the pulsat gtir was the gearbox,it used a normal NA sunny casing with a shot peened gearset but the bearings especially lack
    proper 3rd gear support,so 3rd under power repels/shaft flex and the bearings always failed and munched up things fast or just stripped 3rd of teeth
    quaife did a gear set but it used the stock bearings,and no room or material area in the casing to make a bigger bearing a doable option
    the group n cars nearly munched a box a stage or it failed before the stage ended and just on 280/300? ft/lbs
    seen a Swedish drag car running 500+ still 4wd on slicks but no idea box it used,it must have had a gearbox from another brand of car is my guess
    as no nissan fwd box can cope with that to my knowledge,custom fit a 'box from an audi was my best option idea,but insane engineering costs + time
    very little interchanges between the 2 engines,heads blocks cranks are all different,
    the best bit imo is the throttle body stylee plenum the gtir motor was blessed with
    the above is what I found out a while back when considered doing some thing boosted and fwd and killed the idea tbh

  18. #18
    Guest norfy's Avatar
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    it always seemed the gearbox casing was quite weak, now i dont know if that was because sprockets/bearings were being thrown out of it or if the box casing was too thin in certain areas. there were a couple guys back in the day running braces and beads of weld around their boxes, dont know if that helped

  19. #19
    Guest ANDY black s13's Avatar
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    Afaik it was a 5 speed but based on the prehistoric 120y 1970's sunny 4 speed and designed to handle 70 lbs ft? so yep the casing is thin/weak
    the later sunny primera's etc can have bearing problems on standard sub 100bhp engines and at very low miles
    instead of designing a 'box that can handle 200+bhp,they just shot peened the gearset as the usual cost cutting exercise
    If it was me pending the intended chassis,I would bin the SR20 idea ,and sell it to fund a complete car A3/seat/golf 1.8t,
    seen them at 395/500 price range for the whole car,so bits to sell on after you nick the engine box loom ecu etc
    easy tuned and stock gearbox can take an incredible 750+ ftlbs/whp and swap that into a smaller chassis like a micra/corsa/polo/yaris

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    a 1.8t lupo would be interesting to drive. but then so would sticking the gttdi out of the mk4 golf into a lupo.

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