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PostPosted: Fri Nov 02, 2007 3:28 pm 
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sox61 wrote:
hehe... at least everyone here is pretty quick to keep u honest and not talk crap :lol:


oh we talk crap... but Fast and Furious is how we make love, not how we drive..

sox61 wrote:
Cush, did the sc12'ed car drive well? Did you notice any dead spots if you put your foot down at low revs? How did you find the tune overall?


:roll:

cush in the article this thread is AAAAAALLLLLL about wrote:
the SC12'd 998 shifted along exactly like i had heard. Something felt missing up until around 2500-3000 rpm where you definitley feel the effects of the Toyota air blender kick in.


sox61 wrote:
I'm asking as in mine I have to squeeze on the throttle, rather than just flatten it or it seems to die. Just wondering if this was a common trait in these set ups.


i have a feeling it might be...

but i have another feeling that (as i said ;) ) that it might just be the characteristics of the 998 being emphasised...

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PostPosted: Fri Nov 02, 2007 3:38 pm 
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1275cc
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Nah, I've had issues with low rpm to sudden full throttle crap. It was mostly fixed by fiddling with carby springs. I have a fuel air ratio guage, which is pretty pointless but it reads lean if you tap (hard) the throttle at low rpm, but if you ease it on then at about 2500rpm flatten it, it shows 'stoich' all the way to redline. It's all about not flatten it but easing it on.

Doesn't seem to make a difference on take off, as if you let the clutch out with some rpm on, it's fine. You just learn to drive it the way it wants to be driven. Having said that it's been a while since I've driven it... :(

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PostPosted: Fri Nov 02, 2007 3:59 pm 
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848cc
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yeah, i read that...

I know the power doesn't 'come on' til 3000rpm, but below that mine seriously has a problem when too much throttle is opened, nothing to do with the cam, most likely the tune, or the set up. It feels as if the fuel has been turned off...

Did Nathans have any thing like that, I don't want to spend more on tuning if it can't be fixed!

edit: that's what i was talking about, cheers slinkey- :wink:

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PostPosted: Fri Nov 02, 2007 5:31 pm 
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1360cc
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sox61 wrote:
yeah, i read that...

I know the power doesn't 'come on' til 3000rpm, but below that mine seriously has a problem when too much throttle is opened, nothing to do with the cam, most likely the tune, or the set up. It feels as if the fuel has been turned off...

Did Nathans have any thing like that, I don't want to spend more on tuning if it can't be fixed!

edit: that's what i was talking about, cheers slinkey- :wink:


its mostly gone on mine, unless you want a lot or max throttle below 3000, and i dont have to feather the throttle anymore.
but its definitely not very responsive unless you're on the cam.

i have two dashpot springs and i am using 20/50 oil in the dashpot


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 Post subject: Re: Cush's 998 review
PostPosted: Fri Nov 02, 2007 5:47 pm 
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1360cc
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cush wrote:

998 Auto

The auto was the first one I drove and, having just had a spin in a 1275 EFi with a race cam, the review may be a little biased.

It was slow. If given enough time, and a steep enough hill, you may just overtake a glacier. Several times I pulled out into traffic, thinking that I had enough room to get up to speed. Yet, each time i found myself "Going for the Whip" and cringing behind the steering wheel as the traffic barrelled down on me. The folks at <<insert 80 company names here>> had obviously decided that 1500 rpm was enough revs to make the change to the next gear up.

For the rest of my journey, i took the backstreets and found that it makes a nice little cruiser, once you get it up to the speed limit.

The next part of the journey gave me the opportunity to tackle some hills. When I say tackle, i'm being a little misleading, unless you imagine Andrew Johns trying to bring down a cow.

A cow the size of a house.

Poor is the only word to describe it. Deciding to take the back road up to the hills (avoiding the 7% gradient freeway) i found myself, regularly, in 1st gear flat out at 10-20 kph going for the whip again.

There were moments where i needed to re-enter the freeway to get to the next back road and, even with a bit of run-up, 60kph was all the little guy could muster. The next short stint had a much larger run up and i was able to get up to 100kph, but more importantly, i was able to get the revs up into the "power" band. Once there, even with a slight incline, I could keep it at the speed limit until I exited half a kilometre later.

But once we got back onto the flat and downhills, the cruising nature of "The little engine that almost could" came back and everything was nice and relaxed again. Until I ran out of petrol. But that's irrelevant. :oops:

Recomendation? A 1 litre auto is nice little runabout engine, suitable for areas without main roads, other cars or hills that go up.



so i'm driving a 998 auto at the moment, and i have to agree,
the gearchanges happen far to quickly, second gear is almost skipped
first gear takes a bit to get going off the line, which can ruin merging attempts.. it seems to wanna go straight for 4th gear..
shifting manually, it goes alright for what it is, and once up to speed its not bad.

downhill is fantastic :)
hills are a problem, even manually shifting.. a runup is required :(

but its a relaxing car to drive, and i am enjoying it alot!


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PostPosted: Fri Nov 02, 2007 6:55 pm 
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Location: near Baulkham Hills, NSW
many 998 autos are gutless, just because the kickdown linkage is out of adjustment.
I had mine pulling over 5000 before upshifts... 8)

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 Post subject:
PostPosted: Fri Nov 02, 2007 9:54 pm 
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1275cc
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Location: Adelaide, SA
Spaceboy wrote:
i have two dashpot springs and i am using 20/50 oil in the dashpot


Ok, well I did give do a couple of drops of 20/50 mixed with ATF but that made no difference, however that was before I put the heavy spring in. Once my car is back on the road again (the 'charger and carby is all back on, not far off re starting it, but theres a lot more crap to be bolted back on brakes bled and so on, so much to do, no time to do it....) I'll have a tinker, try 2 springs, try heavier oil. I did have to feather it (especially when cold) to get it going. Although I've never ahd to 'get it on cam' as my car just has a stocko 'S' cam.

Thanks for the advice, I'll seeya at the Mill...

Back on topic...yeah 998 auto....errr...yeah

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 Post subject:
PostPosted: Sat Nov 03, 2007 4:18 am 
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1360cc
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yea nah i emptied the dashpot and put 20/50 in, it dulls the response but might help give the piston the resistance it needs to avoid that sudden leaning out or whatever it does..

yea i dont have to feather the throttle at all, i only had to do that before i did it..

i made some improvements to the 998, goes a lot better now.. though i cant change the gearshift points.. but i reckon the auto 998 can be a nice little engine if its well sorted.


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