1800ti gearbox explained

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1800ti gearbox explained

Post by scimjim » Thu Feb 19, 2009 6:28 am

I have 2 gearboxes for a Nissan CA18ET and I believe the later ones are better? how do I tell the difference between them?

Edit by Erik: This topic was splitted from a For Sale topic. I made some textual adjustments to create a readable first post.


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Post by CNHSS1 » Thu Feb 19, 2009 8:53 am

morning Jim,

this is the Mk2 silvia and reliant-spec (european market) oil cooler assembly. cooler is mounted horizontally on a 90deg alloy casting

Image

the mk1 is as per the picture in Chris's '2009 racer prep thread' in the Comp section. cooler is mounted vertically direct to block between block and oil filter.

Image


the engines are identical in pretty much every other way other than the rocker cover (reliants used the bluebird silver painted version rather than the crackle finish commonly found on silvias). alterantor/water puimp pulleys also changed mid way thru mk2 engine production from the V belts to flat ribbed belts.

as for 'boxes, the pic below shows in order from the back ground
Mk1 (early SS1 Tis D plates and some E plates possibly)
mk2 (rest of SS1 Tis, all SSTs and all Sabre Tis)
Nissan S13 (from 200Sx with pop up lights)

Image

easiest way to tell is to remove gear lever gaiter and look at the gearstick base. if its a ball held in with a circlip and white nylon ring, its mk2 box, if it has the 'cross pin' its a mk1.

Image

all three boxes are the same ratios, but only mk1s and mk2s fit scimitars as the s13 box is longer in the tail housing so can be ignored.


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Post by scimjim » Thu Feb 19, 2009 12:27 pm

Craig,

I have 2 x Mk2 oil coolers at home - I'll check the one in the car (from a Bluebird) and the spare (SS1) tomorrow.

Thanks for the gearbox pics - is the mk2 improved internally? ie is it worth swapping boxes as I think the new engine has a Mk1 on it already?


Jim King

SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
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Post by CNHSS1 » Thu Feb 19, 2009 12:39 pm

cheers Jim

the mk2 box design is better but the mk1 ones seem pretty tough too. the mk2 has a (theoretically) slightly better change and can be improved further with a slightly modified short shifter kit.
its really more a case of using a box thats a known quantity and keeping the other as a spare. if the mk1s working well in the car now, id use that.

do change the oil though, it makes a BIG difference to the boxes health and longevity in sprinting. i dont use expensive oil (Comma from local autofactors) but drop it out twice a season. always 'glittery' on each change...


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Re: 1800ti gearbox explained

Post by toomanysabres » Wed Mar 03, 2010 8:10 pm

Image
Last edited by toomanysabres on Wed Nov 10, 2010 5:36 pm, edited 1 time in total.



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Re: 1800ti gearbox explained

Post by gemcka » Thu Mar 25, 2010 5:29 pm

Hi,

I need to get all the bits that hold the gearstick in a mk2 S12 box!

does anyone know which ones they are?

I think I have the 32850N in the box already (New)
i'm guessing I'll need the Gator & retaner 32862..F & E
32879 - what is this?
32861
32875 - what's this?
32204P & N

cheers

gav
Attachments
S12 Mk2 Selector Parts.jpg


-----------------------------------------------------
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Re: 1800ti gearbox explained

Post by CNHSS1 » Thu Mar 25, 2010 5:54 pm

gemcka wrote:Hi,

I need to get all the bits that hold the gearstick in a mk2 S12 box!

does anyone know which ones they are?

I think I have the 32850N in the box already (New)
i'm guessing I'll need the Gator & retaner 32862..F & E
32879 - what is this?
32861
32875 - what's this?
32204P & N

cheers

gav

32879 - wavy washer, ive got a spare
32861--white nylon ball cup that fits onto the end of the small ball on end of stick that fits into selector yoke. GW stock them or nissan of course
32875 - upper nylon collar, internally tapered to suit top of large ball that lever pivots on
32204P & N -- circlips of some description, think you need one size or the other dependant on year, i have a spare, not sure of size

Oh, and pull ya finger out, Lotons a week on monday :wink:


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Re: 1800ti gearbox explained

Post by CNHSS1 » Tue Jan 29, 2013 10:38 am

a guy from Austrailia ive been in conversations with, has said that the short 71C gearbox (mk2 silvia as used in most turbo scimitars) can be found in the Nissan Navarra N21 pickup.

not sure if we got it or whether its called that over here/Europe, but would help if we had a source of direct fit gearboxes ongoing.

anyone know anything about Nissan pickups?


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Re: 1800ti gearbox explained

Post by CNHSS1 » Tue Dec 10, 2013 5:41 pm

found this re changing input bearings on s14 boxes, also applies to Mk2 silvia boxes (most Ti scimitars).

useful info on general gearbox teardown too

http://www.nissansilvia.com/forums/inde ... _id=408686


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Re:

Post by td99 » Tue Dec 10, 2013 6:20 pm

CNHSS1 wrote:morning Jim,

as for 'boxes, the pic below shows in order from the back ground
Mk1 (early SS1 Tis D plates and some E plates possibly)
mk2 (rest of SS1 Tis, all SSTs and all Sabre Tis)
Nissan S13 (from 200Sx with pop up lights)

Image
This photo has always confused me as the centre gearbox looks to be longer... and it seems to have a connection for electric speedo take-off...


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Re: 1800ti gearbox explained

Post by CNHSS1 » Tue Dec 10, 2013 6:31 pm

I think that's me being a berk TD, the one closer to the camera is Mk2 (Tis etc), middle is S13, top is mk1 silvia (early Ti's). I guess id looked and gone on lengths but not taken into account perspective :oops:
the scimitar chassis/gearbox mount can be clearly seen on the one closest the camera too--doh! :roll: :oops:


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1800ti gearbox explained

Post by Corky » Thu Apr 26, 2018 6:36 pm

Does anyone know if the speedo drive on the MK1 box fits the Mk2 box ?


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