Aintree 25 May 2013 - Track Day

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CNHSS1
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Re: Aintree Track Day

Post by CNHSS1 » Sat May 25, 2013 5:13 pm

one of the issues with ss1 turbo box, all s13 and early s14 boxes is the oil transfer ports in the cast steel centre plate, which allows too much oil flow from gears/selectors section to flow into the tail section (selector rods only), starving gears and bearings and flooding tail section.

i have pics which will show which ports to fill to blank off (use JB Weld or ally epoxy). for a compie box its well worth doing and not a big job witj box on the bench. Cant post as laptops not with me and pics on there


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Re: Aintree Track Day

Post by Corky » Sat May 25, 2013 5:19 pm

CNHSS1 wrote:s14 has taller 1st and shorter 5th as per Batmobile.
s13 has ss1 ratios
Ahh right, I obviously misheard. I'll keep my eye out for an S14 then.

Does your/Stews have an S14 ?

Be interested in the S12 mods too.

Sorry to hijack your thread Steve. I'll stop now :wink:


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Re: Aintree Track Day

Post by swoakes » Sat May 25, 2013 6:20 pm

No problem :wink:

Changing the subject slightly Craig was under the impression that the Sabre has an LSD. Never been mentioned to me by you or Jim. Has it guys :?:


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Re: Aintree Track Day

Post by Corky » Sat May 25, 2013 7:33 pm

Not that I'm aware Steve. Jim ?


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Re: Aintree Track Day

Post by swoakes » Sat May 25, 2013 7:59 pm

Video of one of my later runs; fortunately don't think you can hear me telling the Min to get out of the feckin way :oops:



Sorry for the video; camera had a dicki fit :?


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Re: Aintree Track Day

Post by nickkeyser » Sun May 26, 2013 7:59 am

swoakes wrote:No problem :wink:

Changing the subject slightly Craig was under the impression that the Sabre has an LSD. Never been mentioned to me by you or Jim. Has it guys :?:
Does it have bolt on drive shaft flanges?


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Re: Aintree Track Day

Post by Nick » Sun May 26, 2013 11:00 am

Aintree is harder on brakes than most, particularly stopping at the end! Multiple runs will fade out standard Turbo brakes.

What pads do you have? I changed to Mintex sprint (1144 if I remember) available from Minisport.


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Re: Aintree Track Day

Post by reliant-reviver » Sun May 26, 2013 2:23 pm

If you've cooked the fluid, perhaps it's time for a full stripdown and clean out, slave cylinders, calipers and master. It's not that much work to do really, though it does sound it! Just hope that no nasties are lurking, pitted bores, torn seals etc.
Fresh dot 5.1 makes a world of difference against brake fade through fluid failure.


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Re: Aintree Track Day

Post by Corky » Sun May 26, 2013 4:55 pm

Rear wheel cylinders were new, and MC & calipers were just purged with fresh 5.1 when I recomissioned it. I don't think I measured the discs, maybe they're getting a bit thin ? Not sure how much use they before I got the car, maybe Jim can shed some light.


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Re: Aintree Track Day

Post by scimjim » Sun May 26, 2013 5:17 pm

Discs are probably past their best - I think I fitted recon calipers, new pads/shoes, fluid and braided hoses when I originally re-commisioned it (how many years ago was that?) but I don't think I ever did discs (or rear cylinders).


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Re: Aintree Track Day

Post by swoakes » Sun May 26, 2013 6:08 pm

scimjim wrote:Discs are probably past their best - I think I fitted recon calipers, new pads/shoes, fluid and braided hoses when I originally re-commisioned it (how many years ago was that?) but I don't think I ever did discs (or rear cylinders).
LSD fitted Jim; Craig though so


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Re: Aintree Track Day

Post by scimjim » Sun May 26, 2013 7:33 pm

Not by me?


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Re: Aintree Track Day

Post by swoakes » Sun May 26, 2013 7:40 pm

Didn't think so :(


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Re: Aintree Track Day

Post by CNHSS1 » Mon May 27, 2013 12:21 pm

scimitarcars.org.uk wrote:
CNHSS1 wrote:s14 has taller 1st and shorter 5th as per Batmobile.
s13 has ss1 ratios
Ahh right, I obviously misheard. I'll keep my eye out for an S14 then.

Does your/Stews have an S14 ?

Be interested in the S12 mods too.

Sorry to hijack your thread Steve. I'll stop now :wink:
yes, both Stews and mine have S14 boxes, late model in my case with the 'gated' oil transfer port.


Image
Image

this is an S13/early s14 centre plate. Smaller oil transfer hole

Image

the two side by side for comparison

Image

the other big change in the late model s14 boxes is rubber shielded bearings rather than open cages. this was done purely for oil surge control, nothing more (the oil cant pass through the races and into the tail section).

Image


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Re: Aintree Track Day

Post by CNHSS1 » Mon May 27, 2013 12:25 pm

this shows a Mk2 silvia (late model Scimitar box)

Image

you can see the larger oil transfer port and secondary round one also

pic below is an early s13 box (largely the same as s12 Mk2) except the oil transfer hole at the bottom is reduced in size by half

Image

pic below shows a typical S12/13/14 centre plate and the possible oil holes are shown ringed in red. On this one ALL have been blanked off. The oil level is filled and checked in the official Nissan way through the side filler hole in the casing and then a little oil added via the gear lever hole purely for the rear selector rods etc (not selectors themselves, they are in the main case)
sr20-sandwich-plate.jpeg
sr20-sandwich-plate.jpeg (29.72 KiB) Viewed 2114 times


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