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Something i have been working on!

Here's the post from Rennlist with all the info about a smaller, lighter alternator from a Nissan Quest (whatever that may be???)

http://forums.rennlist.com/rennforums/944-turbo-and-turbo-s-forum/369997-smaller-alternator-issue-completed-pics.html

Apparently it puts out slightly more ampage than our model, emits less heat and weighs less and costs 2/3 the price of the Porsche one. If you delete your non working A/C at the same time you'll lose quite a bit of weight. I alos found this link in my bookmarks and I think it's the same one:

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_Alternator-Worldwide_19850104-P_11_R%7CGRPALTSAMS_539236704___#
 

ORIGINAL: Peter Empson

ORIGINAL: MarkK

With regards to the plastic hatch how does the loss of weight at the back affect the weight bias of the car?I love this idea but someone has spooked me saying it can throw the balance off......?,whats the verdict Peter??
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I've heard this said too and in my experience I'd say it's complete loblocks*.

It does save circa 10kg, and it's located high up in the car but I'd guess that the position of the weight is centered towards 3/4 of the length of the car (unlike the battery for example, which as others have said is another good 10kg saving and from pretty far back). I had the car corner weighted many times and even with all the changes it's remained pretty consistent each time.

*I have only ever run the plastic rear hatch with the 968T spoiler. I do know that running without the spoiler is quite unpleasent, resulting in a real loss of stability when pushing on. There might be a downforce benefit with this spoiler compared to the standard one, which is making up for some loss due to a slight change in weight distribution. It seems unlikely to me, but might explain why people have said it (however I can't help wondering if it was started by someone who like me couldn't get the rubber spoiler to fit and ran without it and then came to the wrong conclusion...).
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If you were going for a plastic hatch then why not mount the spoiler on the body of the car rather than the hatch. Seems little point on a race car in having the aerodynamic load path being transmitted through the hatch when they could act directly onto the body of the car. I think i've see a photo of Pats car with what looks like a setup like this. This means you could have banana shaped CF or Aluminium stanchions riveted to the rear panel, and a wider and more efficient spoiler mounted higher up than the stock spoiler working more efficiently in cleaner air.
 
The series coordinator said to me in a brief chat that the shape must be totally standard,a massive wing would get me in trouble i reckon[:D]
 
ORIGINAL: Diver944

Here's the post from Rennlist with all the info about a smaller, lighter alternator from a Nissan Quest (whatever that may be???)

http://forums.rennlist.com/rennforums/944-turbo-and-turbo-s-forum/369997-smaller-alternator-issue-completed-pics.html

Apparently it puts out slightly more ampage than our model, emits less heat and weighs less and costs 2/3 the price of the Porsche one. If you delete your non working A/C at the same time you'll lose quite a bit of weight. I alos found this link in my bookmarks and I think it's the same one:

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_Alternator-Worldwide_19850104-P_11_R%7CGRPALTSAMS_539236704___#
Click to expand...

Amazing find Paul good work:) I had to read through the whole thread to get a full picture of everything I needed to know but well worth while there's an extremely high probability I will try this some time over the coming months.

Regards,

Ben
 
If youre running a PC hatch then you might as well mount the rear spoiler to the reinforcing bars (that youll have to add with a plastic glass replacement).
 
I know who it was Mark that said -ve things about plastic hatches, what he means is that if you go mad taking weight out of the back of the car you can loose traction. The weight adjustment is less of a problem as you can re-adjust the cars ride height. Balance on these cars is a bit of a moot point IMHO as ultimately in RHD you will always have a struggle with so much weight being on the RH side of the car, in theory on clockwise circuits its much better to have the weight that side if you had to pick anyways.

Mark a question about FC, how full are the grids at the moment?
 
If traction is an issue then surely you're better off fitting a plastic hatch and adding ballast in the bottom of the spare wheel well, or the space behind the rear wheel arch if you re-locate the battery. At least this way you are moving the weight lower down.
 
Scott -thats exactly what my brother said..!
Neil- the grid was full at Snetterton,and they said to another guy i was with that Brands was nearly full,the meet seemed very busy!(but what do i know!)If you join and book a race early it should be no problem.There was an S2 there driven by a young chap (another EMC car) went very well indeed he got 7th and would have come higher but for a snag at the pitstop.
 

ORIGINAL: Neil Haughey

I know who it was Mark that said -ve things about plastic hatches, what he means is that if you go mad taking weight out of the back of the car you can loose traction. The weight adjustment is less of a problem as you can re-adjust the cars ride height. Balance on these cars is a bit of a moot point IMHO as ultimately in RHD you will always have a struggle with so much weight being on the RH side of the car, in theory on clockwise circuits its much better to have the weight that side if you had to pick anyways.

Mark a question about FC, how full are the grids at the moment?
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I think I might have bought all of his plastic hatches off him (if he prefers glass because you can polish it up?). Traction can be an issue: I had to put some weight back into mine. A rear mounted battery might have helped a little in this respect though.
 

ORIGINAL: Diver944

Here's the post from Rennlist with all the info about a smaller, lighter alternator from a Nissan Quest (whatever that may be???)

http://forums.rennlist.com/rennforums/944-turbo-and-turbo-s-forum/369997-smaller-alternator-issue-completed-pics.html

Apparently it puts out slightly more ampage than our model, emits less heat and weighs less and costs 2/3 the price of the Porsche one. If you delete your non working A/C at the same time you'll lose quite a bit of weight. I alos found this link in my bookmarks and I think it's the same one:

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_Alternator-Worldwide_19850104-P_11_R%7CGRPALTSAMS_539236704___#
Click to expand...

The 1997 Quest wasnt really a Nissan, although later models are. It did use a Nissan engine though, whichll also be found in a late eighties Nissan Maxima and the old style (240z-260z-280z) Nissan 300zx.
 
ORIGINAL: MarkK
Thanks Ed,the guy that bought your turbo popped by and said hello this evening at Brands(there was an evening on)plus another guy off here aswell,had my bannana discs changed and like you say the pads were hardly touched (Pagid yellows) i have fitted a set of PF pads though just to compare and got to say i think i prefer them they seem easier to measure/modulate when slowing the car down?Just curious whether they hold up as well as the Pagids in a 40 min race...
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Hi Mark - Dave's a great bloke & my old car will be very nice by the time it's finished. Last time I saw pics it was a shell with a new EMC cage :). It's undergoing a major transformation into a much more serious track car. I wouldn't be surprised if he joined you on the grid at some point :)

I see no reason why PF97's wouldn't last - they are quite happy on a full weight road car 2 up at a Donington track day for 30 mins on P Zero C's - and I was braking hard & late [:D] I do think my 968 cooling ducts helped a bit.
 
944 man, I have tried pm'ing you but it says your mailbox is full. Could you please email me on sandyfalconer@hotmail.co.uk. I will then be able to send you my postal address or fax number for the rear torsion hole template.
Cheers
Sandy
 
Latest on the car,just ordered an uprated clutch direct from Sachs,hopefully it will still be drivableish on the road if just to get to the garages and trackdays,hopefully it will help me get of the line without as much clutch slippage.I will report back once it is in.
 
If it's the same as the 'Cup' clutch that mine originally had then you'll be fine. It feels and modulates just like the standard one but can take more power and abuse (though not the 480lbft mine had to cope with)
 
We went for the one below full monty race car clutch,it will be less drivable but hopefully still drivable enough but stand up to 40 mins of punishment without slippage..Really looking forward to see how it drives..
 
Mark, make sure the firewall around the clutch master cylinder is fine. Under intensive trackwork it should take much stress.
 
Just a couple of observations.

-Agree on battery.
-Definitely agree on lexan rear hatch as a replacement. I'm with Peter regarding the balance change. None.
-Agree with PFCs. Really good initial bite. I found that you modulate them a bit differently from the Pagids. I've had Pagid Blue and Black. I run 01's front and 97s rear. Bit dusty.
-There's an alternator from a Nissan ('Quest' I think?). You do need a bracket but this is also available.
-EDIT: Missed the Nissan mentions above sorry. There's actually a kit available. It's out of the US.
-GTS lights will save you weight as all the motors and bar of the pop ups are quite hefty.
-Floating brake rotors will also save you some weight, and it's unsprung.
-Non stock dash.
-Exhaust, most definitely. The stock one weighs a ton!

Keep it coming Mark. Great to read about. [:)]
 
This is a pic of a commercially available wing setup. I think Kokeln still sell it. You use it in conjunction with a lexan rear hatch.
We made up something sort of similar for my car. It mounts through the actual lexan so that it's not affixed to it, rather the frame inside. You can now buy cheap Chinese Ebay wings that actually are very good copies of some pricey stuff. I dare say probably a bit too JDM for you guys, but in the end you are looking for downforce not aesthetics.

http://www.kokeln.com/rear_racing_spoiler.php

5FF46A8D9DBB458CA81B9C9932D98DEA.jpg
 
Here's my one. Wing is actually really very well made. All c/f not just some bogus layers over f/g. From memory it cost $399au.
We then made a frame for inside the car. It's modular so we can take it off and put on a normal hatch/wing for the street.

DC749A09AD3A4D7FB1BCD88585FD9665.jpg
 
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