Lightyears replacement NA6

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lightyear
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Lightyears replacement NA6

Postby lightyear » Mon Oct 25, 2010 12:06 pm

I thought i would buy a complete car to use for track days untill the NB is finished, (now a long term project - due to house reno's taking priority). Since i didn't fix my old turbo NA6 that hit a wall at winton, i had no car to drive. So i kept a look out for a suitable replacement that didn't need much work, time or money spent on it to get it ready for track use. This car came up for sale unregisted, but with a full spool diff, half cage and a set of 15" wheels. It was in brisbane, but my wife had a conference that we where all going up for anyway. So that worked out good. I had a friend pick it up with a trade plate and drove it back to his house where i could work on it, and get it ready. I flew up on wednesday night, saw it for the first time, and it was better than i thought it would be. So first thing in the morning we took it down for a r.w.c and he wanted the car raised, cage out, exhaust fixed, bonnet squirters, tyres, remove tint from taillights and front blinkers, new wiper arm, and put in a new handbrake lever. So we took it straight down to the muffler shop, had a magnaflow muffler installed straight out the back. Then we installed my b.c coilovers from my old car. Not an easy job as the guy had put in 33mm bolts on the lower bolt hole for the coilovers, so we had to machine up some stepped washers so we could put the proper sized bolt back in. Then we took it down for a new set of toyo r1r's 195/50/15, but hit another drama. One rear wheel nut wouldn't come off, the guys hit a smaller socket on, then went down to another smaller socket, still no luck. So we started at it with some drill bits, removing as much metal as we could, and hitting it with a cold chisel and a punch to try and split the nut.. Took about an hour but we got it off. They where the smallest nuts i have ever seen, only about 10mm long. So now we had the tyres, suspension and exhaust done, and managed to do the other things along the way. We took it back to get the r.w.c on friday morning, it passed. Then we had to get 3rd party insurance, while waiting for the fax to come through we took the opportunity to take it to the brake shop where they flushed the system and put in rbf600 brake fluid, machined the discs and put in ebc red pads. Got the paper work and went to qld transport, payed the rego, got the plates and picked up the car from the brake shop. By this time it was after 2.30pm. I had to take the rental car back to the city, so i left him with the car. He changed the oil and filter and packed his stuff in the car and picked me in the city at about 5.30 p.m. We had to meet some guys to drop something off and they had a new flasher to pu in as the binkers wouldn't blink all the time. So finally we where off to winton about 6.30p.m qld time, i wanted to leave at 4.00p.m. The car is went well, only lacking a little in horsepower. Massive difference to the old car. Trip went well enough, we made good time, the g.p.s said we would get there at 2.00p.m vic time. We got there at 10.20 vic time, so picked up a good 3.5 hrs along the way by not stopping and doing about 117 average the whole way.
Got to winton with no sleep, unpacked the car, put all the stickers on, scrutineered, and took it on the track for the first time. I was surprised how quick it felt considering it has next to no power. I pulled back into the pits as it starting getting hot. The alternator was loose, and the same belt does the water pump, sooo.... fixed it. And the steering wheel almost fell apart in my hands, must be made out of old coke cans as it is so flimsy. It was all bent out of shape and cracked at all the allenkey bolt holes. I was happy how it went as i was expecting understeer due to the full spool diff. I did a 1:52 just bedding in the brakes and tyres. When i checked the tyre pressures they where all up at 46-48psi. So i think it would easily do under 1:50 at winton dríven 100%. We had a few more issues with the alternator coming loose, but we eventually fixed it with some help from owen, bruce and some one else whose name i can't remember. So we had to drive to shep another 70km's each way to get a new steering wheel. We didn't get a good guage to nominate a time for sunday so we just went conserative with a 1:56 for me, and 1:58 for johnny. I broke out on the day with 1:54's-1:55's, should have nominated a 1:54. We left there early and drove straight to the airport, dropped off johnny and finally made it home. It made it all the way from brisbane to winton, did a couple of hours racing and made it home. What more could you ask from an old mx5?? Here is a pic.
Image
NA8B - P.I 1:50.1 Wntn1:38.0 Sand1:27.6 Wntn S1:08 Bfrd1:06.9 Cldr1:08.5 Wak1:10.4
"SE" - P.I 1:43.8 Wntn1:32.9 Sand1:22.0 Bfrd1:05.3

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emexv
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Re: Lightyears replacement NA6

Postby emexv » Mon Oct 25, 2010 12:22 pm

Great story David. Well done, you did an awsome job to get to Winton :beer:
Cheers
Mark

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lightyear
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Re: Lightyears replacement NA6

Postby lightyear » Mon Oct 25, 2010 1:34 pm

The friend of mine - Johnny, that came down from brisbane and raced it on the weekend loved it so much he wants to go halves with me in another mx5. So i might be selling this one if anyone is interested. He couldn't beieve how good it was to drive on the track. The only mods are half cage, exhaust, pod filter, spool diff, b.c coilovers and 15's with toyo r1r's. He said all it needs is more power, so we might be going halves in an nb turbo road/track car. I am in no hurry to sell it, but if you are after a cheap track car that is ready to go let me know.
NA8B - P.I 1:50.1 Wntn1:38.0 Sand1:27.6 Wntn S1:08 Bfrd1:06.9 Cldr1:08.5 Wak1:10.4
"SE" - P.I 1:43.8 Wntn1:32.9 Sand1:22.0 Bfrd1:05.3

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twinlol
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Re: Lightyears replacement NA6

Postby twinlol » Mon Oct 25, 2010 6:36 pm

It's interesting it has a spool diff, sounds like the previous owner had plans for a drift or drag car.
I know it's a 'temporary' car until you get your NB up, but will you keep the spool?

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Re: Lightyears replacement NA6

Postby little decks » Mon Oct 25, 2010 7:01 pm

twinlol wrote:It's interesting it has a spool diff, sounds like the previous owner had plans for a drift or drag car.
I know it's a 'temporary' car until you get your NB up, but will you keep the spool?



Actually a fair few track warriors use spool diffs, i know Dad puts them in pretty much all the cars he builds as track only. I prefer the spool to the LSD on the track personally, i think it allows you to drive the car on the throttle a lot more. They seem to only understeer on trailing throttle, get on the power and they drive through the corner nicely, i prefer that to the usual LSD situation where they tend to plow understeer on the throttle and oversteer on trailing. Also the spool gives you good drive and is very strong if built properly.

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lightyear
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Re: Lightyears replacement NA6

Postby lightyear » Mon Oct 25, 2010 7:59 pm

I have never dríven a car with a full spool before and have been told by some they are no good, and others sware by them. I was told it will suit phillip island but be really bad at winton on the slow corners. I can tell you it is easy to drive, no under steer and it actually turns better from mid corner when you put the power down. You can feel it pushing a little on the front (understeer) just as you would with any diff, but when you put the power down it actually turns better. Of course you can put it into a power slide but it is controlable and very predictable. I liked it. It's only in the carpark that it is hard to steer. I was tossing up throwing the turbo motor in as i don't need it and it is just sitting there. Done 2 track days since rebuild. I might need the extra speed at P.I in december.
NA8B - P.I 1:50.1 Wntn1:38.0 Sand1:27.6 Wntn S1:08 Bfrd1:06.9 Cldr1:08.5 Wak1:10.4
"SE" - P.I 1:43.8 Wntn1:32.9 Sand1:22.0 Bfrd1:05.3

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twinlol
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Re: Lightyears replacement NA6

Postby twinlol » Mon Oct 25, 2010 10:05 pm

Thanks guys, I had heard from people that Spools are very strong but are a somewhat/love hate thing unless you do drift or drag, I'll have to drive one for myself, but it certainly sounds like a good differential.

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lightyear
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Re: Lightyears replacement NA6

Postby lightyear » Tue Oct 26, 2010 7:24 am

Well it's booked in to get the new heart and bigger lungs in a couple of weeks. Couldn't help myself.
NA8B - P.I 1:50.1 Wntn1:38.0 Sand1:27.6 Wntn S1:08 Bfrd1:06.9 Cldr1:08.5 Wak1:10.4
"SE" - P.I 1:43.8 Wntn1:32.9 Sand1:22.0 Bfrd1:05.3

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Hammer
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Re: Lightyears replacement NA6

Postby Hammer » Tue Oct 26, 2010 7:33 pm

Welcome back LY.
H@mmer - 1994 Clubman | 2002 SP
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GO TOPLESS!!!

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lightyear
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Re: Lightyears replacement NA6

Postby lightyear » Thu Oct 28, 2010 4:50 pm

I pulled out the seats and rollcage, installed a different cage for (slightly) better clearance. Gave it a vac, (keeping all the carpet and console this time - it is just a street car after all) and put the passenger seat back in, then bolted the velo seat straight to the floor like the old car, but now with the cage in the way, it is sitting a lot more upright. I will have to get a no dish steering wheel. I also picked up 3 NB8A motors, and a NB8A 5 speed as well as a NB8B SE turbo 6 speed box. I will pick up a new hydraulic ram for my engine crane tmrow and then i can pull the old 1.6 turbo motor and box out of the NB. And get it ready for this car. I was thinking of running the 6 speed in it, but i don't think there will be much advantage. From memory they have similiar top gear ratios. I might have to pull out the full spool diff and put the torsen in as it is taller geared. The old car was doing 7,600 rpm in 5th down the straight at P.I.
NA8B - P.I 1:50.1 Wntn1:38.0 Sand1:27.6 Wntn S1:08 Bfrd1:06.9 Cldr1:08.5 Wak1:10.4
"SE" - P.I 1:43.8 Wntn1:32.9 Sand1:22.0 Bfrd1:05.3

rascal
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Re: Lightyears replacement NA6

Postby rascal » Fri Oct 29, 2010 9:30 am

I just re-read your first post and you managed to get the car registered with a full spool diff, coilovers and a stuffed steering wheel?? :shock:

Wow, qld transport must be pretty laid back..

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lightyear
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Re: Lightyears replacement NA6

Postby lightyear » Fri Oct 29, 2010 10:30 am

Yes, they are pretty good up there. I went up there a few years ago to get my bike license, here it was like $250 and 50 questions for the learners. Up there it was 5 questions and $16.50........ Oh, and only 1 day to get full bike license too. Here it is 3 years i think. Australia in general has too many rules and safety is a bit overboard.
NA8B - P.I 1:50.1 Wntn1:38.0 Sand1:27.6 Wntn S1:08 Bfrd1:06.9 Cldr1:08.5 Wak1:10.4
"SE" - P.I 1:43.8 Wntn1:32.9 Sand1:22.0 Bfrd1:05.3

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Re: Lightyears replacement NA6

Postby kula » Wed Nov 03, 2010 10:07 pm

Awesome car. How many kms on it?

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lightyear
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Re: Lightyears replacement NA6

Postby lightyear » Wed Nov 03, 2010 11:11 pm

I just posted a for sale page. It has about 180 something thousand km's on the clock.
NA8B - P.I 1:50.1 Wntn1:38.0 Sand1:27.6 Wntn S1:08 Bfrd1:06.9 Cldr1:08.5 Wak1:10.4
"SE" - P.I 1:43.8 Wntn1:32.9 Sand1:22.0 Bfrd1:05.3


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